githubmirror/gnutls

NEWS
10 476 строк404 KB
Daiki Ueno
Release 3.8.7
15 авг 2024, 04:46
15 авг 2024, 04:46c7e4cb4
GnuTLS NEWS -- History of user-visible changes.                -*- outline -*-
Bug numbers referenced in this log correspond to bug numbers at our issue tracker,
available at https://gitlab.com/gnutls/gnutls/issues
Copyright (C) 2000-2016 Free Software Foundation, Inc.
Copyright (C) 2013-2019 Nikos Mavrogiannopoulos
See the end for copying conditions.

* Version 3.8.7 (released 2024-08-15)

** libgnutls: New configure option to compile out DSA support
   The --disable-dsa configure option has been added to completely disable DSA
   algorithm support.

** libgnutls: Experimental support for X25519Kyber768Draft00 key exchange in TLS
   For testing purposes, the hybrid post-quantum key exchange defined
   in draft-tls-westerbaan-xyber768d00 has been implemented using
   liboqs. Since the algorithm is still not finalized, the support of
   this key exchange is disabled by default and can be enabled with
   the --with-liboqs configure option.

** API and ABI modifications:
No changes since last version.

* Version 3.8.6 (released 2024-07-03)

** libgnutls: PBMAC1 is now supported as a MAC mechanism for PKCS#12
   To be compliant with FIPS 140-3, PKCS#12 files with MAC based on
   PBKDF2 (PBMAC1) is now supported, according to the specification
   proposed in draft-ietf-lamps-pkcs12-pbmac1.

** libgnutls: SHA3 extendable output functions (XOF) are now supported
   SHA3 XOF, SHAKE128 and SHAKE256, are now usable through a new
   public API gnutls_hash_squeeze.

** API and ABI modifications:
gnutls_pkcs12_generate_mac3: New function
gnutls_pkcs12_flags_t: New enum
gnutls_hash_squeeze: New function

* Version 3.8.5 (released 2024-04-04)

** libgnutls: Due to majority of usages and implementations of
   RSA decryption with PKCS#1 v1.5 padding being incorrect,
   leaving them vulnerable to Marvin attack, the RSAES-PKCS1-v1_5
   is being deprecated (encryption and decryption) and will be
   disabled in the future. A new option `allow-rsa-pkcs1-encrypt`
   has been added into the system-wide library configuration which
   allows to enable/disable the RSAES-PKCS1-v1_5. Currently, the
   RSAES-PKCS1-v1_5 is enabled by default.

** libgnutls: Added support for RIPEMD160 and PBES1-DES-SHA1 for
   backward compatibility with GCR.

** libgnutls: A couple of memory related issues have been fixed in RSA PKCS#1
   v1.5 decryption error handling and deterministic ECDSA with earlier
   versions of GMP.  These were a regression introduced in the 3.8.4
   release. See #1535 and !1827.

** build: Fixed a bug where building gnutls statically failed due
   to a duplicate definition of nettle_rsa_compute_root_tr().

** API and ABI modifications:
GNUTLS_PKCS_PBES1_DES_SHA1: New enum member of gnutls_pkcs_encrypt_flags_t

* Version 3.8.4 (released 2024-03-18)

** libgnutls: RSA-OAEP encryption scheme is now supported
   To use it with an unrestricted RSA private key, one would need to
   initialize a gnutls_x509_spki_t object with necessary parameters
   for RSA-OAEP and attach it to the private key. It is also possible
   to import restricted private keys if they are stored in PKCS#8
   format.

** libgnutls: Fix side-channel in the deterministic ECDSA.
   Reported by George Pantelakis (#1516).
   [GNUTLS-SA-2023-12-04, CVSS: medium] [CVE-2024-28834]

** libgnutls: Fixed a bug where certtool crashed when verifying a certificate
   chain with more than 16 certificates. Reported by William Woodruff (#1525)
   and yixiangzhike (#1527).
   [GNUTLS-SA-2024-01-23, CVSS: medium] [CVE-2024-28835]

** libgnutls: Compression libraries are now loaded dynamically as needed
   instead of all being loaded during gnutls library initialization.
   As a result, the library initialization should be faster.

** build: The gnutls library can now be linked with the static library
   of GMP.  Note that in order for this to work libgmp.a needs to be
   compiled with -fPIC and libhogweed in Nettle also has to be linked
   to the static library of GMP.  This can be used to prevent custom
   memory allocators from being overriden by other applications.

** API and ABI modifications:
gnutls_x509_spki_get_rsa_oaep_params: New function.
gnutls_x509_spki_set_rsa_oaep_params: New function.
GNUTLS_PK_RSA_OAEP: New enum member of gnutls_pk_algorithm_t.

* Version 3.8.3 (released 2024-01-16)

** libgnutls: Fix more timing side-channel inside RSA-PSK key exchange
   [GNUTLS-SA-2024-01-14, CVSS: medium] [CVE-2024-0553]

** libgnutls: Fix assertion failure when verifying a certificate chain with a
   cycle of cross signatures
   [GNUTLS-SA-2024-01-09, CVSS: medium] [CVE-2024-0567]

** libgnutls: Fix regression in handling Ed25519 keys stored in PKCS#11 token
   certtool was unable to handle Ed25519 keys generated on PKCS#11
   with pkcs11-tool (OpenSC). This is a regression introduced in 3.8.2.

** API and ABI modifications:
No changes since last version.

* Version 3.8.2 (released 2023-11-14)

** libgnutls: Fix timing side-channel inside RSA-PSK key exchange.
   [GNUTLS-SA-2023-10-23, CVSS: medium] [CVE-2023-5981]

** libgnutls: Add API functions to perform ECDH and DH key agreement
   The functionality has been there for a long time though they were
   not available as part of the public API.  This enables applications
   to implement custom protocols leveraging non-interactive key
   agreement with ECDH and DH.

** libgnutls: Added support for AES-GCM-SIV ciphers (RFC 8452)
   The new algorithms GNUTLS_CIPHER_AES_128_SIV_GCM and
   GNUTLS_CIPHER_AES_256_SIV_GCM have been added to be used through
   the AEAD interface.  Note that, unlike
   GNUTLS_CIPHER_AES_{128,256}_SIV_GCM, the authentication tag is
   appended to the ciphertext, not prepended.

** libgnutls: transparent KTLS support is extended to FreeBSD kernel
   The kernel TLS feature can now be enabled on FreeBSD as well as
   Linux when compiled with the --enable-ktls configure option.

** gnutls-cli: New option --starttls-name
   Depending on deployment, application protocols such as XMPP may
   require a different origin address than the external address to be
   presented prior to STARTTLS negotiation.  The --starttls-name can
   be used to specify specify the addresses separately.

** API and ABI modifications:
gnutls_pubkey_import_dh_raw: New function
gnutls_privkey_import_dh_raw: New function
gnutls_pubkey_export_dh_raw: New function
gnutls_privkey_export_dh_raw: New function
gnutls_x509_privkey_import_dh_raw: New function
gnutls_privkey_derive_secret: New function
GNUTLS_KEYGEN_DH: New enum member of gnutls_keygen_types_t
GNUTLS_CIPHER_AES_128_SIV_GCM: Added
GNUTLS_CIPHER_AES_256_SIV_GCM: Added

* Version 3.8.1 (released 2023-08-03)

** libgnutls: ClientHello extensions are randomized by default
   To make fingerprinting harder, TLS extensions in ClientHello
   messages are shuffled. As this behavior may cause compatibility
   issue with legacy applications that do not accept the last
   extension without payload, the behavior can be reverted with the
   %NO_SHUFFLE_EXTENSIONS priority keyword.

** libgnutls: Add support for RFC 9258 external PSK importer.
   This enables to deploy the same PSK across multiple TLS versions
   (TLS 1.2 and TLS 1.3) in a secure manner. To use, the application
   needs to set up a callback that formats the PSK identity using
   gnutls_psk_format_imported_identity().

** libgnutls: %GNUTLS_NO_EXTENSIONS has been renamed to
   %GNUTLS_NO_DEFAULT_EXTENSIONS.

** libgnutls: Add additional PBKDF limit checks in FIPS mode as
   defined in SP 800-132. Minimum salt length is 128 bits and
   minimum iterations bound is 1000 for PBKDF in FIPS mode.

** libgnutls: Add a mechanism to control whether to enforce extended
   master secret (RFC 7627). FIPS 140-3 mandates the use of TLS
   session hash (extended master secret, EMS) in TLS 1.2. To enforce
   this, a new priority keyword %FORCE_SESSION_HASH is added and if
   it is set and EMS is not set, the peer aborts the connection. This
   behavior is the default in FIPS mode, though it can be overridden
   through the configuration file with the "tls-session-hash" option.
   In either case non-EMS PRF is reported as a non-approved operation
   through the FIPS service indicator.

** New option --attime to specify current time.
   To make testing with different timestamp to the system easier, the
   tools doing certificate verification now provide a new option
   --attime, which takes an arbitrary time.

** API and ABI modifications:
gnutls_psk_client_credentials_function3: New typedef
gnutls_psk_server_credentials_function3: New typedef
gnutls_psk_set_server_credentials_function3: New function
gnutls_psk_set_client_credentials_function3: New function
gnutls_psk_format_imported_identity: New function
GNUTLS_PSK_KEY_EXT: New enum member of gnutls_psk_key_flags

* Version 3.8.0 (released 2023-02-09)

** libgnutls: Fix a Bleichenbacher oracle in the TLS RSA key exchange.
   Reported by Hubert Kario (#1050). Fix developed by Alexander Sosedkin.
   [GNUTLS-SA-2020-07-14, CVSS: medium] [CVE-2023-0361]

** libgnutls: C++ library is now header only. All definitions from
   gnutlsxx.c have been moved into gnutlsxx.h. Users of the C++
   interface have two options:
   1. include gnutlsxx.h in their application and link against
      the C library. (default)
   2. include gnutlsxx.h in their application, compile with
      GNUTLS_GNUTLSXX_NO_HEADERONLY macro defined and link
      against the C++ library.

** libgnutls: GNUTLS_NO_STATUS_REQUEST flag and %NO_STATUS_REQUEST
   priority modifier have been added to allow disabling of the
   status_request TLS extension in the client side.

** libgnutls: TLS heartbeat is disabled by default.
   The heartbeat extension in TLS (RFC 6520) is not widely used given
   other implementations dropped support for it. To enable back
   support for it, supply --enable-heartbeat-support to configure
   script.

** libgnutls: SRP authentication is now disabled by default.
   It is disabled because the SRP authentication in TLS is not up to
   date with the latest TLS standards and its ciphersuites are based
   on the CBC mode and SHA-1.  To enable it back, supply
   --enable-srp-authentication option to configure script.

** libgnutls: All code has been indented using "indent -ppi1 -linux".
   CI/CD has been adjusted to catch regressions.  This is implemented
   through devel/indent-gnutls, devel/indent-maybe and .gitlab-ci.yml’s
   commit-check.  You may run devel/indent-gnutls to fix any
   indentation issues if you make code modifications.

** guile: Guile-bindings removed.
   They have been extracted into a separate project to reduce complexity
   and to simplify maintenance, see <https://gitlab.com/gnutls/guile/>.

** minitasn1: Upgraded to libtasn1 version 4.19.

** API and ABI modifications:
GNUTLS_NO_STATUS_REQUEST: New flag
GNUTLS_SRTP_AEAD_AES_128_GCM: New gnutls_srtp_profile_t enum member
GNUTLS_SRTP_AEAD_AES_256_GCM: New gnutls_srtp_profile_t enum member

* Version 3.7.8 (released 2022-09-27)

** libgnutls: In FIPS140 mode, RSA signature verification is an approved
   operation if the key has modulus with known sizes (1024, 1280,
   1536, and 1792 bits), in addition to any modulus sizes larger than
   2048 bits, according to SP800-131A rev2.

** libgnutls: gnutls_session_channel_binding performs additional checks when
   GNUTLS_CB_TLS_EXPORTER is requested. According to RFC9622 4.2, the
   "tls-exporter" channel binding is only usable when the handshake is
   bound to a unique master secret (i.e., either TLS 1.3 or extended
   master secret extension is negotiated). Otherwise the function now
   returns error.

** libgnutls: usage of the following functions, which are designed to
   loosen restrictions imposed by allowlisting mode of configuration,
   has been additionally restricted. Invoking them is now only allowed
   if system-wide TLS priority string has not been initialized yet:
gnutls_digest_set_secure
gnutls_sign_set_secure
gnutls_sign_set_secure_for_certs
gnutls_protocol_set_enabled

** API and ABI modifications:
No changes since last version.

* Version 3.7.7 (released 2022-07-28)

** libgnutls: Fixed double free during verification of pkcs7 signatures.
   Reported by Jaak Ristioja (#1383). [GNUTLS-SA-2022-07-07, CVSS: medium]
   [CVE-2022-2509]

** libgnutls: gnutls_hkdf_expand now only accepts LENGTH argument less than or
   equal to 255 times hash digest size, to comply with RFC 5869 2.3.

** libgnutls: Length limit for TLS PSK usernames has been increased
   from 128 to 65535 characters (#1323).

** libgnutls: AES-GCM encryption function now limits plaintext
   length to 2^39-256 bits, according to SP800-38D 5.2.1.1.

** libgnutls: New block cipher functions have been added to transparently
   handle padding.  gnutls_cipher_encrypt3 and gnutls_cipher_decrypt3 can be
   used in combination of GNUTLS_CIPHER_PADDING_PKCS7 flag to automatically
   add/remove padding if the length of the original plaintext is not a multiple
   of the block size.

** libgnutls: New function for manual FIPS self-testing.

** API and ABI modifications:
gnutls_fips140_run_self_tests: New function
gnutls_cipher_encrypt3: New function
gnutls_cipher_decrypt3: New function
gnutls_cipher_padding_flags_t: New enum

** guile: Guile 1.8 is no longer supported

** guile: Session record port treats premature termination as EOF
   Previously, a ‘gnutls-error’ exception with the
   ‘error/premature-termination’ value would be thrown while reading from a
   session record port when the underlying session was terminated
   prematurely.  This was inconvenient since users of the port may not be
   prepared to handle such an exception.
   Reading from the session record port now returns the end-of-file object
   instead of throwing an exception, just like it would for a proper
   session termination.

** guile: Session record ports can have a ‘close’ procedure.
   The ‘session-record-port’ procedure now takes an optional second
   parameter, and a new ‘set-session-record-port-close!’ procedure is
   provided to specify a ‘close’ procedure for a session record port.
   This ‘close’ procedure lets users specify cleanup operations for when
   the port is closed, such as closing the file descriptor or port that
   backs the underlying session.

* Version 3.7.6 (released 2022-05-27)

** libgnutls: Fixed invalid write when gnutls_realloc_zero()
   is called with new_size < old_size. This bug caused heap
   corruption when gnutls_realloc_zero() has been set as gmp
   reallocfunc (!1592, #1367, #1368, #1369).

** API and ABI modifications:
No changes since last version.

* Version 3.7.5 (released 2022-05-15)

** libgnutls: The GNUTLS_NO_TICKETS_TLS12 flag and %NO_TICKETS_TLS12 priority
   modifier have been added to disable session ticket usage in TLS 1.2 because
   it does not provide forward secrecy (#477).  On the other hand, since session
   tickets in TLS 1.3 do provide forward secrecy, the PFS priority string now
   only disables session tickets in TLS 1.2.  Future backward incompatibility:
   in the next major release of GnuTLS, we plan to remove those flag and
   modifier, and make GNUTLS_NO_TICKETS and %NO_TICKETS only affect TLS 1.2.

** gnutls-cli, gnutls-serv: Channel binding for printing information
   has been changed from tls-unique to tls-exporter as tls-unique is
   not supported in TLS 1.3.

** libgnutls: Certificate sanity checks has been enhanced to make
   gnutls more RFC 5280 compliant (!1583).
   Following changes were included:
   - critical extensions are parsed when loading x509
     certificate to prohibit any random octet strings.
     Requires strict-x509 configure option to be enabled
   - garbage bits in Key Usage extension are prohibited
   - empty DirectoryStrings in Distinguished name structures
     of Issuer and Subject name are prohibited

** libgnutls: Removed 3DES from FIPS approved algorithms (#1353).
   According to the section 2 of SP800-131A Rev.2, 3DES algorithm
   will be disallowed for encryption after December 31, 2023:
   https://csrc.nist.gov/publications/detail/sp/800-131a/rev-2/final

** libgnutls: Optimized support for AES-SIV-CMAC algorithms (#1217, #1312).
   The existing AEAD API that works in a scatter-gather fashion
   (gnutls_aead_cipher_encryptv2) has been extended to support AES-SIV-CMAC.
   For further optimization, new function (gnutls_aead_cipher_set_key) has been
   added to set key on the existing AEAD handle without re-allocation.

** libgnutls: HKDF and AES-GCM algorithms are now approved in FIPS-140 mode
   when used in TLS (#1311).

** The configure arguments for Brotli and Zstandard (zstd) support
   have changed to reflect the previous help text: they are now
   --with-brotli/--with-zstd respectively (#1342).

** Detecting the Zstandard (zstd) library in configure has been
   fixed (#1343).

** API and ABI modifications:
GNUTLS_NO_TICKETS_TLS12: New flag
gnutls_aead_cipher_set_key: New function

* Version 3.7.4 (released 2022-03-17)

** libgnutls: Added support for certificate compression as defined in RFC8879
   (#1301). New API functions (gnutls_compress_certificate_get_selected_method
   and gnutls_compress_certificate_set_methods) allow client and server to set
   their preferences.

** certtool: Added option --compress-cert that allows user to specify
   compression methods for certificate compression.

** libgnutls: GnuTLS can now be compiled with --enable-strict-x509 configure
   option to enforce stricter certificate sanity checks that are compliant with
   RFC5280.

** libgnutls: Removed IA5String type from DirectoryString within issuer
   and subject name to make DirectoryString RFC5280 compliant.

** libgnutls: Added function (gnutls_record_send_file) to send file content from
   open file descriptor (!1486). The implementation is optimized if KTLS (kernel
   TLS) is enabled.

** libgnutls: Added function (gnutls_ciphersuite_get) to retrieve the name of
   current ciphersuite from TLS session (#1291).

** libgnutls: The run-time dependency on tpm2-tss is now re-implemented using
   dlopen, so GnuTLS does not indirectly link to other crypto libraries until
   TPM2 functionality is utilized (!1544).

** API and ABI modifications:
GNUTLS_COMP_BROTLI: New gnutls_compression_method_t enum member
GNUTLS_COMP_ZSTD: New gnutls_compression_method_t enum member
gnutls_compress_certificate_get_selected_method: Added
gnutls_compress_certificate_set_methods: Added
gnutls_ciphersuite_get: New function
gnutls_record_send_file: New function
libgnutlsxx: Soname bumped due to ABI breakage introduced in 3.7.1

* Version 3.7.3 (released 2022-01-17)

** libgnutls: The allowlisting configuration mode has been added to the system-wide
   settings. In this mode, all the algorithms are initially marked as insecure
   or disabled, while the applications can re-enable them either through the
   [overrides] section of the configuration file or the new API (#1172).

** The build infrastructure no longer depends on GNU AutoGen for generating
   command-line option handling, template file parsing in certtool, and
   documentation generation (#773, #774). This change also removes run-time or
   bundled dependency on the libopts library, and requires Python 3.6 or later
   to regenerate the distribution tarball.

   Note that this brings in known backward incompatibility in command-line
   tools, such as long options are now case sensitive, while previously they
   were treated in a case insensitive manner: for example --RSA is no longer a
   valid option of certtool. The existing scripts using GnuTLS tools may need
   adjustment for this change.

** libgnutls: The tpm2-tss-engine compatible private blobs can be loaded and
   used as a gnutls_privkey_t (#594). The code was originally written for the
   OpenConnect VPN project by David Woodhouse. To generate such blobs, use the
   tpm2tss-genkey tool from tpm2-tss-engine:
   https://github.com/tpm2-software/tpm2-tss-engine/#rsa-operations
   or the tpm2_encodeobject tool from unreleased tpm2-tools.

** libgnutls: The library now transparently enables Linux KTLS
   (kernel TLS) when the feature is compiled in with --enable-ktls configuration
   option (#1113). If the KTLS initialization fails it automatically falls back
   to the user space implementation.

** certtool: The certtool command can now read the Certificate Transparency
   (RFC 6962) SCT extension (#232).  New API functions are also provided to
   access and manipulate the extension values.

** certtool: The certtool command can now generate, manipulate, and evaluate
   x25519 and x448 public keys, private keys, and certificates.

** libgnutls: Disabling a hashing algorithm through "insecure-hash"
   configuration directive now also disables TLS ciphersuites that use it as a
   PRF algorithm.

** libgnutls: PKCS#12 files are now created with modern algorithms by default
   (!1499).  Previously certtool used PKCS12-3DES-SHA1 for key derivation and
   HMAC-SHA1 as an integity measure in PKCS#12.  Now it uses AES-128-CBC with
   PBKDF2 and SHA-256 for both key derivation and MAC algorithms, and the
   default PBKDF2 iteration count has been increased to 600000.

** libgnutls: PKCS#12 keys derived using GOST algorithm now uses
   HMAC_GOSTR3411_2012_512 instead of HMAC_GOSTR3411_2012_256 for integrity, to
   conform with the latest TC-26 requirements (#1225).

** libgnutls: The library now provides a means to report the status of approved
   cryptographic operations (!1465). To adhere to the FIPS140-3 IG 2.4.C., this
   complements the existing mechanism to prohibit the use of unapproved
   algorithms by making the library unusable state.

** gnutls-cli: The gnutls-cli command now provides a --list-config option to
   print the library configuration (!1508).

** libgnutls: Fixed possible race condition in
   gnutls_x509_trust_list_verify_crt2 when a single trust list object is shared
   among multiple threads (#1277). [GNUTLS-SA-2022-01-17, CVSS: low]

** API and ABI modifications:
GNUTLS_PRIVKEY_FLAG_RSA_PSS_FIXED_SALT_LENGTH: new flag in gnutls_privkey_flags_t
GNUTLS_VERIFY_RSA_PSS_FIXED_SALT_LENGTH: new flag in gnutls_certificate_verify_flags
gnutls_ecc_curve_set_enabled: Added.
gnutls_sign_set_secure: Added.
gnutls_sign_set_secure_for_certs: Added.
gnutls_digest_set_secure: Added.
gnutls_protocol_set_enabled: Added.
gnutls_fips140_context_init: New function
gnutls_fips140_context_deinit: New function
gnutls_fips140_push_context: New function
gnutls_fips140_pop_context: New function
gnutls_fips140_get_operation_state: New function
gnutls_fips140_operation_state_t: New enum
gnutls_transport_is_ktls_enabled: New function
gnutls_get_library_configuration: New function

* Version 3.7.2 (released 2021-05-29)

** libgnutls: The priority string option %DISABLE_TLS13_COMPAT_MODE was added
   to disable TLS 1.3 middlebox compatibility mode

** libgnutls: The Linux kernel AF_ALG based acceleration has been added.
   This can be enabled with --enable-afalg configure option, when libkcapi
   package is installed (#308).

** libgnutls: Fixed timing of early data exchange. Previously, the client was
   sending early data after receiving Server Hello, which not only negates the
   benefit of 0-RTT, but also works under certain assumptions hold (e.g., the
   same ciphersuite is selected in initial and resumption handshake) (#1146).

** certtool: When signing a CSR, CRL distribution point (CDP) is no longer
   copied from the signing CA by default (#1126).

** libgnutls: The GNUTLS_NO_EXPLICIT_INIT envvar has been renamed to
   GNUTLS_NO_IMPLICIT_INIT to reflect the purpose (#1178). The former is now
   deprecated and will be removed in the future releases.

** certtool: When producing certificates and certificate requests, subject DN
   components that are provided individually will now be ordered by
   assumed scale (e.g. Country before State, Organization before
   OrganizationalUnit).  This change also affects the order in which
   certtool prompts interactively.  Please rely on the template
   mechanism for automated use of certtool! (#1243)

** API and ABI modifications:
gnutls_early_cipher_get: Added
gnutls_early_prf_hash_get: Added

** guile: Writes to a session record port no longer throw an exception upon
   GNUTLS_E_AGAIN or GNUTLS_E_INTERRUPTED.

* Version 3.7.1 (released 2021-03-10)

** libgnutls: Fixed potential use-after-free in sending "key_share"
   and "pre_shared_key" extensions. When sending those extensions, the
   client may dereference a pointer no longer valid after
   realloc. This happens only when the client sends a large Client
   Hello message, e.g., when HRR is sent in a resumed session
   previously negotiated large FFDHE parameters, because the initial
   allocation of the buffer is large enough without having to call
   realloc (#1151).  [GNUTLS-SA-2021-03-10, CVSS: low]

** libgnutls: Fixed a regression in handling duplicated certs in a
   chain (#1131).

** libgnutls: Fixed sending of session ID in TLS 1.3 middlebox
   compatibility mode. In that mode the client shall always send a
   non-zero session ID to make the handshake resemble the TLS 1.2
   resumption; this was not true in the previous versions (#1074).

** libgnutls: W32 performance improvement with a new sendmsg()-like
   transport implementation (!1377).

** libgnutls: Removed dependency on the external 'fipscheck' package,
   when compiled with --enable-fips140-mode (#1101).

** libgnutls: Added padlock acceleration for AES-192-CBC (#1004).

** API and ABI modifications:
No changes since last version.

* Version 3.7.0 (released 2020-12-02)

** libgnutls: Depend on nettle 3.6 (!1322).

** libgnutls: Added a new API that provides a callback function to
   retrieve missing certificates from incomplete certificate chains
   (#202, #968, #1100).

** libgnutls: Added a new API that provides a callback function to
   output the complete path to the trusted root during certificate
   chain verification (#1012).

** libgnutls: OIDs exposed as gnutls_datum_t no longer account for the
   terminating null bytes, while the data field is null terminated.
   The affected API functions are: gnutls_ocsp_req_get_extension,
   gnutls_ocsp_resp_get_response, and gnutls_ocsp_resp_get_extension
   (#805).

** libgnutls: Added a new set of API to enable QUIC implementation (#826, #849,
   #850).

** libgnutls: The crypto implementation override APIs deprecated in 3.6.9 are
   now no-op (#790).

** libgnutls: Added MAGMA/KUZNYECHIK CTR-ACPKM and CMAC support (!1161).

** libgnutls: Support for padlock has been fixed to make it work with Zhaoxin
   CPU (#1079).

** libgnutls: The maximum PIN length for PKCS #11 has been increased from 31
   bytes to 255 bytes (#932).

** API and ABI modifications:
gnutls_x509_trust_list_set_getissuer_function: Added
gnutls_x509_trust_list_get_ptr: Added
gnutls_x509_trust_list_set_ptr: Added
gnutls_session_set_verify_output_function: Added
gnutls_record_encryption_level_t: New enum
gnutls_handshake_read_func: New callback type
gnutls_handshake_set_read_function: New function
gnutls_handshake_write: New function
gnutls_handshake_secret_func: New callback type
gnutls_handshake_set_secret_function: New function
gnutls_alert_read_func: New callback type
gnutls_alert_set_read_function: New function
gnutls_crypto_register_cipher: Deprecated; no-op
gnutls_crypto_register_aead_cipher: Deprecated; no-op
gnutls_crypto_register_mac: Deprecated; no-op
gnutls_crypto_register_digest: Deprecated; no-op

* Version 3.6.15 (releases 2020-09-04)

** libgnutls: Fixed "no_renegotiation" alert handling at incorrect timing.
   The server sending a "no_renegotiation" alert in an unexpected timing,
   followed by an invalid second handshake was able to cause a TLS 1.3 client to
   crash via a null-pointer dereference. The crash happens in the application's
   error handling path, where the gnutls_deinit function is called after
   detecting a handshake failure (#1071).  [GNUTLS-SA-2020-09-04, CVSS: medium]

** libgnutls: If FIPS self-tests are failed, gnutls_fips140_mode_enabled() now
   indicates that with a false return value (!1306).

** libgnutls: Under FIPS mode, the generated ECDH/DH public keys are checked
   accordingly to SP800-56A rev 3 (!1295, !1299).

** libgnutls: gnutls_x509_crt_export2() now returns 0 upon success, rather than
   the size of the internal base64 blob (#1025). The new behavior aligns to the
   existing documentation.

** libgnutls: Certificate verification failure due to OCSP must-stapling is not
   honered is now correctly marked with the GNUTLS_CERT_INVALID flag
   (!1317). The new behavior aligns to the existing documentation.

** libgnutls: The audit log message for weak hashes is no longer printed twice
   (!1301).

** libgnutls: Fixed version negotiation when TLS 1.3 is enabled and TLS 1.2 is
   disabled in the priority string. Previously, even when TLS 1.2 is explicitly
   disabled with "-VERS-TLS1.2", the server still offered TLS 1.2 if TLS 1.3 is
   enabled (#1054).

** API and ABI modifications:
No changes since last version.

* Version 3.6.14 (released 2020-06-03)

** libgnutls: Fixed insecure session ticket key construction, since 3.6.4.
   The TLS server would not bind the session ticket encryption key with a
   value supplied by the application until the initial key rotation, allowing
   attacker to bypass authentication in TLS 1.3 and recover previous
   conversations in TLS 1.2 (#1011).
   [GNUTLS-SA-2020-06-03, CVSS: high]

** libgnutls: Fixed handling of certificate chain with cross-signed
   intermediate CA certificates (#1008).

** libgnutls: Fixed reception of empty session ticket under TLS 1.2 (#997).

** libgnutls: gnutls_x509_crt_print() is enhanced to recognizes commonName
   (2.5.4.3), decodes certificate policy OIDs (!1245), and prints Authority
   Key Identifier (AKI) properly (#989, #991).

** certtool: PKCS #7 attributes are now printed with symbolic names (!1246).

** libgnutls: Added several improvements on Windows Vista and later releases
   (!1257, !1254, !1256). Most notably the system random number generator now
   uses Windows BCrypt* API if available (!1255).

** libgnutls: Use accelerated AES-XTS implementation if possible (!1244).
   Also both accelerated and non-accelerated implementations check key block
   according to FIPS-140-2 IG A.9 (!1233).

** libgnutls: Added support for AES-SIV ciphers (#463).

** libgnutls: Added support for 192-bit AES-GCM cipher (!1267).

** libgnutls: No longer use internal symbols exported from Nettle (!1235)

** API and ABI modifications:
GNUTLS_CIPHER_AES_128_SIV: Added
GNUTLS_CIPHER_AES_256_SIV: Added
GNUTLS_CIPHER_AES_192_GCM: Added
GNUTLS_NO_AUTO_SEND_TICKET: Added
gnutls_ext_get_name2: Added
gnutls_pkcs7_print_signature_info: Added

* Version 3.6.13 (released 2020-03-31)

** libgnutls: Fix a DTLS-protocol regression (caused by TLS1.3 support), since 3.6.3.
   The DTLS client would not contribute any randomness to the DTLS negotiation,
   breaking the security guarantees of the DTLS protocol (#960)
   [GNUTLS-SA-2020-03-31, CVSS: high]

** libgnutls: Added new APIs to access KDF algorithms (#813).

** libgnutls: Added new callback gnutls_keylog_func that enables a custom
   logging functionality.

** libgnutls: Added support for non-null terminated usernames in PSK
   negotiation (#586).

** gnutls-cli-debug: Improved support for old servers that only support
   SSL 3.0.

** API and ABI modifications:
gnutls_hkdf_extract: Added
gnutls_hkdf_expand: Added
gnutls_pbkdf2: Added
gnutls_session_get_keylog_function: Added
gnutls_session_set_keylog_function: Added
gnutls_prf_hash_get: Added
gnutls_psk_server_get_username2: Added
gnutls_psk_set_client_credentials2: Added
gnutls_psk_set_client_credentials_function2: Added
gnutls_psk_set_server_credentials_function2: Added


* Version 3.6.12 (released 2020-02-01)

** libgnutls: Introduced TLS session flag (gnutls_session_get_flags())
   to identify sessions that client request OCSP status request (#829).

** libgnutls: Added support for X448 key exchange (RFC 7748) and Ed448
   signature algorithm (RFC 8032) under TLS (#86).

** libgnutls: Added the default-priority-string option to system configuration;
   it allows overriding the compiled-in default-priority-string.

** libgnutls: Added support for GOST CNT_IMIT ciphersuite (as defined by
   draft-smyshlyaev-tls12-gost-suites-07).
   By default this ciphersuite is disabled. It can be enabled by adding
   +GOST to priority string. In the future this priority string may enable
   other GOST ciphersuites as well.  Note, that server will fail to negotiate
   GOST ciphersuites if TLS 1.3 is enabled both on a server and a client. It
   is recommended for now to disable TLS 1.3 in setups where GOST ciphersuites
   are enabled on GnuTLS-based servers.

** libgnutls: added priority shortcuts for different GOST categories like
   CIPHER-GOST-ALL, MAC-GOST-ALL, KX-GOST-ALL, SIGN-GOST-ALL, GROUP-GOST-ALL.

** libgnutls: Reject certificates with invalid time fields. That is we reject
   certificates with invalid characters in Time fields, or invalid time formatting
   To continue accepting the invalid form compile with --disable-strict-der-time
   (#207, #870).

** libgnutls: Reject certificates which contain duplicate extensions. We were
   previously printing warnings when printing such a certificate, but that is
   not always sufficient to flag such certificates as invalid. Instead we now
   refuse to import them (#887).

** libgnutls: If a CA is found in the trusted list, check in addition to
   time validity, whether the algorithms comply to the expected level prior
   to accepting it. This addresses the problem of accepting CAs which would
   have been marked as insecure otherwise (#877).

** libgnutls: The min-verification-profile from system configuration applies
   for all certificate verifications, not only under TLS. The configuration can
   be overridden using the GNUTLS_SYSTEM_PRIORITY_FILE environment variable.

** libgnutls: The stapled OCSP certificate verification adheres to the convention
   used throughout the library of setting the 'GNUTLS_CERT_INVALID' flag.

** libgnutls: On client side only send OCSP staples if they have been requested
   by the server, and on server side always advertise that we support OCSP stapling
   (#876).

** libgnutls: Introduced the gnutls_ocsp_req_const_t which is compatible
   with gnutls_ocsp_req_t but const.

** certtool: Added the --verify-profile option to set a certificate
   verification profile. Use '--verify-profile low' for certificate verification
   to apply the 'NORMAL' verification profile.

** certtool: The add_extension template option is considered even when generating
   a certificate from a certificate request.

** API and ABI modifications:
GNUTLS_SFLAGS_CLI_REQUESTED_OCSP: Added
GNUTLS_SFLAGS_SERV_REQUESTED_OCSP: Added
gnutls_ocsp_req_const_t: Added


* Version 3.6.11 (released 2019-12-01)

** libgnutls: Use KERN_ARND for the system random number generator on NetBSD.
   This syscall provides an endless stream of random numbers from the kernel's
   ChaCha20-based random number generator, without blocking or requiring an open file
   descriptor.

** libgnutls: Corrected issue with TLS 1.2 session ticket handling as client
   during resumption (#841).

** libgnutls: gnutls_base64_decode2() succeeds decoding the empty string to
   the empty string. This is a behavioral change of the API but it conforms
   to the RFC4648 expectations (#834).

** libgnutls: Fixed AES-CFB8 implementation, when input is shorter than
   the block size. Fix backported from nettle.

** certtool: CRL distribution points will be set in CA certificates even when
   non self-signed (#765).

** gnutls-cli/serv: added raw public-key handling capabilities (RFC7250).
   Key material can be set via the --rawpkkeyfile and --rawpkfile flags.

** API and ABI modifications:
No changes since last version.


* Version 3.6.10 (released 2019-09-29)

** libgnutls: Added support for deterministic ECDSA/DSA (RFC6979)
   Deterministic signing can be enabled by setting
   GNUTLS_PRIVKEY_FLAG_REPRODUCIBLE when calling gnutls_privkey_sign_*()
   functions (#94).

** libgnutls: add gnutls_aead_cipher_encryptv2 and gnutls_aead_cipher_decryptv2
   functions that will perform in-place encryption/decryption on data buffers (#718).

** libgnutls: Corrected issue in gnutls_session_get_data2() which could fail under
   TLS1.3, if a timeout callback was not set using gnutls_transport_set_pull_timeout_function()
   (#823).

** libgnutls: added interoperability tests with gnutls 2.12.x; addressed
   issue with large record handling due to random padding (#811).

** libgnutls: the server now selects the highest TLS protocol version,
   if TLS 1.3 is enabled and the client advertises an older protocol version first (#837).

** libgnutls: fix non-PIC assembly on i386 (#818).

** libgnutls: added support for GOST 28147-89 cipher in CNT (GOST counter) mode
   and MAC generation based on GOST 28147-89 (IMIT). For description of the
   modes see RFC 5830. S-Box is id-tc26-gost-28147-param-Z (TC26Z) defined in
   RFC 7836.

** certtool: when outputting an encrypted private key do not insert the textual description
   of it. This fixes a regression since 3.6.5 (#840).

** API and ABI modifications:
gnutls_aead_cipher_encryptv2: Added
gnutls_aead_cipher_decryptv2: Added
GNUTLS_CIPHER_GOST28147_TC26Z_CNT: Added
GNUTLS_MAC_GOST28147_TC26Z_IMIT: Added

* Version 3.6.9 (released 2019-07-25)

** libgnutls: add gnutls_hash_copy/gnutls_hmac_copy functions that will create a copy
   of digest or MAC context. Copying contexts for externally-registered digest and MAC
   contexts is unupported (#787).

** Marked the crypto implementation override APIs as deprecated. These APIs are rarely
   used, are for a niche use case, but have significant side effects, such as preventing
   any internal re-organization and extension of the internal cipher API. The APIs remain
   functional though a compiler warning will be issued, and a future minor version update
   may transform them to a no-op while keeping ABI compatibility (#789).

** libgnutls: Added support for AES-GMAC, as a separate to GCM, MAC algorithm (#781).

** libgnutls: gnutls_privkey_sign_hash2 now accepts the GNUTLS_PRIVKEY_SIGN_FLAG_TLS1_RSA
   flag as documented. This makes it a complete replacement of gnutls_privkey_sign_hash().

** libgnutls: Added support for Generalname registeredID.

** The priority configuration was enhanced to allow more elaborate
   system-wide configuration of the library (#587).
   The following changes were included:
    - The file is read as an ini file with '#' indicating a comment.
    - The section "[priorities]" or global follows the existing semantics of
      the configuration file, and allows to specify system-wide priority strings
      which are accessed with the '@' prefix.
    - The section "[overrides]" is added with the parameters "insecure-hash",
      "insecure-sig", "insecure-sig-for-cert", "disabled-curve",
      "disabled-version", "min-verification-profile", "tls-disabled-cipher",
      "tls-disabled-mac", "tls-disabled-group", "tls-disabled-kx", which prohibit
      specific algorithms or options globally. Existing algorithms in the
      library can be marked as disabled and insecure, but no hard-coded
      insecure algorithm can be marked as secure (so that the configuration
      cannot be abused to make the system vulnerable).
    - Unknown sections or options are skipped with a debug message, unless
      the GNUTLS_SYSTEM_PRIORITY_FAIL_ON_INVALID environment parameter is
      set to 1.

** libgnutls: Added new flag for GNUTLS_CPUID_OVERRIDE
    - 0x20: Enable SHA_NI instruction set

** API and ABI modifications:
gnutls_crypto_register_cipher: Deprecated
gnutls_crypto_register_aead_cipher: Deprecated
gnutls_crypto_register_digest: Deprecated
gnutls_crypto_register_mac: Deprecated
gnutls_get_system_config_file: Added
gnutls_hash_copy: Added
gnutls_hmac_copy: Added
GNUTLS_MAC_AES_GMAC_128: Added
GNUTLS_MAC_AES_GMAC_192: Added
GNUTLS_MAC_AES_CMAC_256: Added
GNUTLS_SAN_REGISTERED_ID: Added


* Version 3.6.8 (released 2019-05-28)

** libgnutls: Added gnutls_prf_early() function to retrieve early keying
   material (#329)

** libgnutls: Added support for AES-XTS cipher (#354)

** libgnutls: Fix calculation of Streebog digests (incorrect carry operation in
   512 bit addition)

** libgnutls: During Diffie-Hellman operations in TLS, verify that the peer's
   public key is on the right subgroup (y^q=1 mod p), when q is available (under
   TLS 1.3 and under earlier versions when RFC7919 parameters are used).

** libgnutls: the gnutls_srp_set_server_credentials_function can now be used
   with the 8192 parameters as well (#995).

** libgnutls: Fixed bug preventing the use of gnutls_pubkey_verify_data2() and
   gnutls_pubkey_verify_hash2() with the GNUTLS_VERIFY_DISABLE_CA_SIGN flag (#754)

** libgnutls: The priority string option %ALLOW_SMALL_RECORDS was added to allow
   clients to communicate with the server advertising smaller limits than 512

** libgnutls: Apply STD3 ASCII rules in gnutls_idna_map() to prevent
   hostname/domain crafting via IDNA conversion (#720)

** certtool: allow the digital signature key usage flag in CA certificates.
   Previously certtool would ignore this flag for CA certificates even if
   specified (#767)

** gnutls-cli/serv: added the --keymatexport and --keymatexportsize options.
   These allow testing the RFC5705 using these tools.

** API and ABI modifications:
gnutls_prf_early: Added
gnutls_record_set_max_recv_size: Added
gnutls_dh_params_import_raw3: Added
gnutls_ffdhe_2048_group_q: Added
gnutls_ffdhe_3072_group_q: Added
gnutls_ffdhe_4096_group_q: Added
gnutls_ffdhe_6144_group_q: Added
gnutls_ffdhe_8192_group_q: Added


* Version 3.6.7 (released 2019-03-27)

** libgnutls, gnutls tools: Every gnutls_free() will automatically set
   the free'd pointer to NULL. This prevents possible use-after-free and
   double free issues. Use-after-free will be turned into NULL dereference.
   The counter-measure does not extend to applications using gnutls_free().

** libgnutls: Fixed a memory corruption (double free) vulnerability in the
   certificate verification API. Reported by Tavis Ormandy; addressed with
   the change above. [GNUTLS-SA-2019-03-27, #694]

** libgnutls: Fixed an invalid pointer access via malformed TLS1.3 async messages;
   Found using tlsfuzzer. [GNUTLS-SA-2019-03-27, #704]

** libgnutls: enforce key usage limitations on certificates more actively.
   Previously we would enforce it for TLS1.2 protocol, now we enforce it
   even when TLS1.3 is negotiated, or on client certificates as well. When
   an inappropriate for TLS1.3 certificate is seen on the credentials structure
   GnuTLS will disable TLS1.3 support for that session (#690).

** libgnutls: the default number of tickets sent under TLS 1.3 was increased to
   two. This makes it easier for clients which perform multiple connections
   to the server to use the tickets sent by a default server.

** libgnutls: enforce the equality of the two signature parameters fields in
   a certificate. We were already enforcing the signature algorithm, but there
   was a bug in parameter checking code.

** libgnutls: fixed issue preventing sending and receiving from different
   threads when false start was enabled (#713).

** libgnutls: the flag GNUTLS_PKCS11_OBJ_FLAG_LOGIN_SO now implies a writable
   session, as non-writeable security officer sessions are undefined in PKCS#11
   (#721).

** libgnutls: no longer send downgrade sentinel in TLS 1.3.
   Previously the sentinel value was embedded to early in version
   negotiation and was sent even on TLS 1.3. It is now sent only when
   TLS 1.2 or earlier is negotiated (#689).

** gnutls-cli: Added option --logfile to redirect informational messages output.

** API and ABI modifications:
No changes since last version.


* Version 3.6.6 (released 2019-01-25)

** libgnutls: gnutls_pubkey_import_ecc_raw() was fixed to set the number bits
   on the public key (#640).

** libgnutls: Added support for raw public-key authentication as defined in RFC7250.
   Raw public-keys can be negotiated by enabling the corresponding certificate
   types via the priority strings. The raw public-key mechanism must be explicitly
   enabled via the GNUTLS_ENABLE_RAWPK init flag (#26, #280).

** libgnutls: When on server or client side we are sending no extensions we do
   not set an empty extensions field but we rather remove that field completely.
   This solves a regression since 3.5.x and improves compatibility of the server
   side with certain clients.

** libgnutls: We no longer mark RSA keys in PKCS#11 tokens as RSA-PSS capable if
   the CKA_SIGN is not set (#667).

** libgnutls: The priority string option %NO_EXTENSIONS was improved to completely
   disable extensions at all cases, while providing a functional session. This
   also implies that when specified, TLS1.3 is disabled.

** libgnutls: GNUTLS_X509_NO_WELL_DEFINED_EXPIRATION was marked as deprecated.
   The previous definition was non-functional (#609).

** API and ABI modifications:
GNUTLS_ENABLE_RAWPK: Added
GNUTLS_ENABLE_CERT_TYPE_NEG: Removed (was no-op; replaced by GNUTLS_ENABLE_RAWPK) 
GNUTLS_X509_NO_WELL_DEFINED_EXPIRATION: Deprecated
GNUTLS_PCERT_NO_CERT: Deprecated


* Version 3.6.5 (released 2018-12-01)

** libgnutls: Provide the option of transparent re-handshake/reauthentication
   when the GNUTLS_AUTO_REAUTH flag is specified in gnutls_init() (#571).

** libgnutls: Added support for TLS 1.3 zero round-trip (0-RTT) mode (#127)

** libgnutls: The priority functions will ignore and not enable TLS1.3 if
   requested with legacy TLS versions enabled but not TLS1.2. That is because
   if such a priority string is used in the client side (e.g., TLS1.3+TLS1.0 enabled)
   servers which do not support TLS1.3 will negotiate TLS1.2 which will be
   rejected by the client as disabled (#621).

** libgnutls: Change RSA decryption to use a new side-channel silent function.
   This addresses a security issue where memory access patterns as well as timing
   on the underlying Nettle rsa-decrypt function could lead to new Bleichenbacher
   attacks. Side-channel resistant code is slower due to the need to mask
   access and timings. When used in TLS the new functions cause RSA based
   handshakes to be between 13% and 28% slower on average (Numbers are indicative,
   the tests where performed on a relatively modern Intel CPU, results vary
   depending on the CPU and architecture used). This change makes nettle 3.4.1
   the minimum requirement of gnutls (#630). [CVSS: medium]

** libgnutls: gnutls_priority_init() and friends, allow the CTYPE-OPENPGP keyword
   in the priority string. It is only accepted as legacy option and is ignored.

** libgnutls: Added support for EdDSA under PKCS#11 (#417)

** libgnutls: Added support for AES-CFB8 cipher (#357)

** libgnutls: Added support for AES-CMAC MAC (#351)

** libgnutls: In two previous versions GNUTLS_CIPHER_GOST28147_CPB/CPC/CPD_CFB ciphers
   have incorrectly used CryptoPro-A S-BOX instead of proper (CryptoPro-B/-C/-D
   S-BOXes). They are fixed now.

** libgnutls: Added support for GOST key unmasking and unwrapped GOST private
   keys parsing, as specified in R 50.1.112-2016.

** gnutls-serv: It applies the default settings when no --priority option is given,
   using gnutls_set_default_priority().

** p11tool: Fix initialization of security officer's PIN with the --initialize-so-pin
   option (#561)

** certtool: Add parameter --no-text that prevents certtool from outputting
   text before PEM-encoded private key, public key, certificate, CRL or CSR.

** API and ABI modifications:
GNUTLS_AUTO_REAUTH: Added
GNUTLS_CIPHER_AES_128_CFB8: Added
GNUTLS_CIPHER_AES_192_CFB8: Added
GNUTLS_CIPHER_AES_256_CFB8: Added
GNUTLS_MAC_AES_CMAC_128: Added
GNUTLS_MAC_AES_CMAC_256: Added
gnutls_record_get_max_early_data_size: Added
gnutls_record_send_early_data: Added
gnutls_record_recv_early_data: Added
gnutls_db_check_entry_expire_time: Added
gnutls_anti_replay_set_add_function: Added
gnutls_anti_replay_init: Added
gnutls_anti_replay_deinit: Added
gnutls_anti_replay_set_window: Added
gnutls_anti_replay_enable: Added
gnutls_privkey_decrypt_data2: Added


* Version 3.6.4 (released 2018-09-24)

** libgnutls: Added the final (RFC8446) version numbering of the TLS1.3 protocol.

** libgnutls: Corrected regression since 3.6.3 in the callbacks set with
   gnutls_certificate_set_retrieve_function() which could not handle the case where
   no certificates were returned, or the callbacks were set to NULL (see #528).

** libgnutls: gnutls_handshake() on server returns early on handshake when no
   certificate is presented by client and the gnutls_init() flag GNUTLS_ENABLE_EARLY_START
   is specified.

** libgnutls: Added session ticket key rotation on server side with TOTP.
   The key set with gnutls_session_ticket_enable_server() is used as a
   master key to generate time-based keys for tickets. The rotation
   relates to the gnutls_db_set_cache_expiration() period.

** libgnutls: The 'record size limit' extension is added and preferred to the
   'max record size' extension when possible.

** libgnutls: Provide a more flexible PKCS#11 search of trust store certificates.
   This addresses the problem where the CA certificate doesn't have a subject key
   identifier whereas the end certificates have an authority key identifier (#569)

** libgnutls: gnutls_privkey_export_gost_raw2(), gnutls_privkey_import_gost_raw(),
   gnutls_pubkey_export_gost_raw2(), gnutls_pubkey_import_gost_raw() import
   and export GOST parameters in the "native" little endian format used for these
   curves. This is an intentional incompatible change with 3.6.3.

** libgnutls: Added support for separately negotiating client and server certificate types
   as defined in RFC7250. This mechanism must be explicitly enabled via the
   GNUTLS_ENABLE_CERT_TYPE_NEG flag in gnutls_init().

** gnutls-cli: enable CRL validation on startup (#564)

** API and ABI modifications:
GNUTLS_ENABLE_EARLY_START: Added
GNUTLS_ENABLE_CERT_TYPE_NEG: Added
GNUTLS_TL_FAIL_ON_INVALID_CRL: Added
GNUTLS_CERTIFICATE_VERIFY_CRLS: Added
gnutls_ctype_target_t: New enumeration
gnutls_record_set_max_early_data_size: Added
gnutls_certificate_type_get2: Added
gnutls_priority_certificate_type_list2: Added
gnutls_ffdhe_6144_group_prime: Added
gnutls_ffdhe_6144_group_generator: Added
gnutls_ffdhe_6144_key_bits: Added


* Version 3.6.3 (released 2018-07-16)

** libgnutls: Introduced support for draft-ietf-tls-tls13-28. It includes version
   negotiation, post handshake authentication, length hiding, multiple OCSP support,
   consistent ciphersuite support across protocols, hello retry requests, ability
   to adjust key shares via gnutls_init() flags, certificate authorities extension,
   and key usage limits. TLS1.3 draft-28 support can be enabled by default if
   the option --enable-tls13-support is given to configure script.

** libgnutls: Apply compatibility settings for existing applications running with TLS1.2 or
   earlier and TLS 1.3. When SRP or NULL ciphersuites are specified in priority strings
   TLS 1.3 is will be disabled. When Anonymous ciphersuites are specified in priority
   strings, then TLS 1.3 negotiation will be disabled if the session is associated
   only with an anonymous credentials structure.

** Added support for Russian Public Key Infrastructure according to RFCs 4491/4357/7836.
   This adds support for using GOST keys for digital signatures and under PKCS#7, PKCS#12,
   and PKCS#8 standards. In particular added elliptic curves GOST R 34.10-2001 CryptoProA
   256-bit curve (RFC 4357), GOST R 34.10-2001 CryptoProXchA 256-bit curve (RFC 4357),
   and GOST R 34.10-2012 TC26-512-A 512-bit curve (RFC 7836).

** Provide a uniform cipher list across supported TLS protocols; the CAMELLIA ciphers
   as well as ciphers utilizing HMAC-SHA384 and SHA256 have been removed from the default
   priority strings, as they are undefined under TLS1.3 and they provide no advantage
   over other options in earlier protocols.

** The SSL 3.0 protocol is disabled on compile-time by default. It can be re-enabled
   by specifying --enable-ssl3-support on configure script.

** libgnutls: Introduced function to switch the current FIPS140-2 operational
   mode, i.e., strict vs a more lax mode which will allow certain non FIPS140-2
   operations.

** libgnutls: Introduced low-level function to assist applications attempting client
   hello extension parsing, prior to GnuTLS' parsing of the message.

** libgnutls: When exporting an X.509 certificate avoid re-encoding if there are no
   modifications to the certificate. That prevents DER re-encoding issues with incorrectly
   encoded certificates, or other DER incompatibilities to affect a TLS session.
   Relates with #403

** libgnutls: on group exchange honor the %SERVER_PRECEDENCE and select the groups
   which are preferred by the server. That unfortunately has complicated semantics
   as TLS1.2 requires specific ordering of the groups based on the ciphersuite ordering,
   which could make group order unpredictable if TLS1.3 is negotiated.

** Improved counter-measures for TLS CBC record padding. Kenny Paterson, Eyal Ronen
   and Adi Shamir reported that the existing counter-measures had certain issues and
   were insufficient when the attacker has additional access to the CPU cache and
   performs a chosen-plaintext attack. This affected the legacy CBC ciphersuites. [CVSS: medium]

** Introduced the %FORCE_ETM priority string option. This option prevents the negotiation
   of legacy CBC ciphersuites unless encrypt-then-mac is negotiated.

** libgnutls: gnutls_privkey_import_ext4() was enhanced with the
   GNUTLS_PRIVKEY_INFO_PK_ALGO_BITS flag.

** libgnutls: gnutls_pkcs11_copy_secret_key, gnutls_pkcs11_copy_x509_privkey2,
   gnutls_pkcs11_privkey_generate3 will mark objects as sensitive by default
   unless GNUTLS_PKCS11_OBJ_FLAG_MARK_NOT_SENSITIVE is specified. This is an API
   change for these functions which make them err towards safety.

** libgnutls: improved aarch64 cpu features detection by using getauxval().

** certtool: It is now possible to specify certificate and serial CRL numbers greater
   than 2**63-2 as a hex-encoded string both when prompted and in a template file.
   Default certificate serial numbers are now fully random. Default CRL
   numbers include more random bits and are larger than in previous GnuTLS versions.
   Since CRL numbers are required to be monotonic, specify suitable CRL numbers manually
   if you intend to later downgrade to previous versions as it was not possible
   to specify large CRL numbers in previous versions of certtool.

** API and ABI modifications:
gnutls_fips140_set_mode: Added
gnutls_session_key_update: Added
gnutls_ext_get_current_msg: Added
gnutls_reauth: Added
gnutls_ocsp_status_request_get2: Added
gnutls_ocsp_resp_import2: Added
gnutls_ocsp_resp_export2: Added
gnutls_ocsp_resp_list_import2: Added
gnutls_certificate_set_retrieve_function3: Added
gnutls_certificate_set_ocsp_status_request_file2: Added
gnutls_certificate_set_ocsp_status_request_mem: Added
gnutls_certificate_get_ocsp_expiration: Added
gnutls_record_send2: Added
gnutls_ext_raw_parse: Added
gnutls_x509_crt_list_import_url: Added
gnutls_pcert_list_import_x509_file: Added
gnutls_pkcs11_token_get_ptr: Added
gnutls_pkcs11_obj_get_ptr: Added
gnutls_session_ticket_send: Added
gnutls_aead_cipher_encryptv: Added
gnutls_gost_paramset_get_name: Added
gnutls_gost_paramset_get_oid: Added
gnutls_oid_to_gost_paramset: Added
gnutls_decode_gost_rs_value: Added
gnutls_encode_gost_rs_value: Added
gnutls_pubkey_export_gost_raw2: Added
gnutls_pubkey_import_gost_raw: Added
gnutls_x509_crt_get_pk_gost_raw: Added
gnutls_privkey_export_gost_raw2: Added
gnutls_privkey_import_gost_raw: Added
gnutls_x509_privkey_export_gost_raw: Added
gnutls_x509_privkey_import_gost_raw: Added
gnutls_set_default_priority_append: Added
gnutls_priority_init2: Added
GNUTLS_PRIVKEY_INFO_PK_ALGO_BITS: Added
GNUTLS_PKCS11_OBJ_FLAG_MARK_NOT_SENSITIVE: Added


* Version 3.6.2 (released 2018-02-16)

** libgnutls: When verifying against a self signed certificate ignore issuer.
   That is, ignore issuer when checking the issuer's parameters strength, resolving
   issue #347 which caused self signed certificates to be additionally marked as of
   insufficient security level.

** libgnutls: Corrected MTU calculation for the CBC ciphersuites. The data
   MTU calculation now, it correctly accounts for the fixed overhead due to
   padding (as 1 byte), while at the same time considers the rest of the
   padding as part of data MTU.

** libgnutls: Address issue of loading of all PKCS#11 modules on startup
   on systems with a PKCS#11 trust store (as opposed to a file trust store).
   Introduced a multi-stage initialization which loads the trust modules, and
   other modules are deferred for the first pure PKCS#11 request.

** libgnutls: The SRP authentication will reject any parameters outside
   RFC5054. This protects any client from potential MitM due to insecure
   parameters. That also brings SRP in par with the RFC7919 changes to
   Diffie-Hellman.

** libgnutls: Added the 8192-bit parameters of SRP to the accepted parameters
   for SRP authentication.

** libgnutls: Addressed issue in the accelerated code affecting interoperability
   with versions of nettle >= 3.4.

** libgnutls: Addressed issue in the AES-GCM acceleration under aarch64.

** libgnutls: Addressed issue in the AES-CBC acceleration under ssse3 (patch by
   Vitezslav Cizek).

** srptool: the --create-conf option no longer includes 1024-bit parameters.

** p11tool: Fixed the deletion of objects in batch mode.

** API and ABI modifications:
gnutls_srp_8192_group_generator: Added
gnutls_srp_8192_group_prime: Added


* Version 3.6.1 (released 2017-10-21)

** libgnutls: Fixed interoperability issue with openssl when safe renegotiation was
   used. Resolves gitlab issue #259.

** libgnutls: gnutls_x509_crl_sign, gnutls_x509_crt_sign,
   gnutls_x509_crq_sign, were modified to sign with a better algorithm than
   SHA1. They will now sign with an algorithm that corresponds to the security
   level of the signer's key.

** libgnutls: gnutls_x509_*_sign2() functions and gnutls_x509_*_privkey_sign()
   accept GNUTLS_DIG_UNKNOWN (0) as a hash function option. That will signal
   the function to auto-detect an appropriate hash algorithm to use.

** libgnutls: Removed support for signature algorithms using SHA2-224 in TLS.
   TLS 1.3 no longer uses SHA2-224 and it was never a widespread algorithm
   in TLS 1.2. As such, no reason to keep supporting it.

** libgnutls: Refuse to use client certificates containing disallowed
   algorithms for a session. That reverts a change on 3.5.5, which allowed
   a client to use DSA-SHA1 due to his old DSA certificate, without requiring him
   to enable DSA-SHA1 (and thus make it acceptable for the server's certificate).
   The previous approach was to allow a smooth move for client infrastructure
   after the DSA algorithm became disabled by default, and is no longer necessary
   as DSA is now being universally deprecated.

** libgnutls: Refuse to resume a session which had a different SNI advertised. That
   improves RFC6066 support in server side. Reported by Thomas Klute.

** p11tool: Mark all generated objects as sensitive by default.

** p11tool: added options --sign-params and --hash. This allows testing
   signature with multiple algorithms, including RSA-PSS.

** API and ABI modifications:
No changes since last version.


* Version 3.6.0 (released 2017-08-21)

** libgnutls: tlsfuzzer is part of the CI testsuite. This is a TLS testing and
   fuzzying toolkit, allowing for corner case testing, and ensuring that the
   behavior of the library will not change across releases.
   https://github.com/tomato42/tlsfuzzer

** libgnutls: Introduced a lock-free random generator which operates per-thread
   and eliminates random-generator related bottlenecks in multi-threaded operation.
   Resolves gitlab issue #141.
   http://nmav.gnutls.org/2017/03/improving-by-simplifying-gnutls-prng.html

** libgnutls: Replaced the Salsa20 random generator with one based on CHACHA.
   The goal is to reduce code needed in cache (CHACHA is also used for TLS),
   and the number of primitives used by the library. That does not affect the
   AES-DRBG random generator used in FIPS140-2 mode.

** libgnutls: Added support for RSA-PSS key type as well as signatures in
   certificates, and TLS key exchange. Contributed by Daiki Ueno.
   RSA-PSS signatures can be generated by RSA-PSS keys and normal RSA keys,
   but not vice-versa.  The feature includes:
     * RSA-PSS key generation and key handling (in PKCS#8 form)
     * RSA-PSS key generation and key handling from PKCS#11 (with CKM_RSA_PKCS_PSS mech)
     * Handling of RSA-PSS subjectPublicKeyInfo parameters, when present
       in either the private key or certificate.
     * RSA-PSS signing and verification of PKIX certificates
     * RSA-PSS signing and verification of TLS 1.2 handshake
     * RSA-PSS signing and verification of PKCS#7 structures
     * RSA-PSS and RSA key combinations for TLS credentials. That is, when
       multiple keys are supplied, RSA-PSS keys are preferred over RSA for RSA-PSS
       TLS signatures, to contain risks of cross-protocol attacks between the algorithms.
     * RSA-PSS key conversion to RSA PKCS#1 form (certtool --to-rsa)
   Note that RSA-PSS signatures with SHA1 are (intentionally) not supported.

** libgnutls: Added support for Ed25519 signing in certificates and TLS key
   exchange following draft-ietf-tls-rfc4492bis-17.  The feature includes:
     * Ed25519 key generation and key handling (in PKCS#8 form)
     * Ed25519 signing and verification of PKIX certificates
     * Ed25519 signing and verification of TLS 1.2 handshake
     * Ed25519 signing and verification of PKCS#7 structures

** libgnutls: Enabled X25519 key exchange by default, following draft-ietf-tls-rfc4492bis-17.

** libgnutls: Added support for Diffie-Hellman group negotiation following RFC7919.
   That makes the DH parameters negotiation more robust and less prone to errors
   due to insecure parameters. Servers are no longer required to specific explicit
   DH parameters, though if they do these parameters will be used. Group
   selection can be done via priority strings. The introduced strings are
   GROUP-ALL, GROUP-FFDHE2048, GROUP-FFDHE3072, GROUP-FFDHE4096 and
   GROUP-FFDHE8192, as well as the corresponding to curves groups. Note that
   the 6144 group from RFC7919 is not supported.

** libgnutls: Introduced various sanity checks on certificate import. Refuse
   to import certificates which have fractional seconds in Time fields, X.509v1
   certificates which have the unique identifiers set, and certificates with illegal
   version numbers. All of these are prohibited by RFC5280.

** libgnutls: Introduced gnutls_x509_crt_set_flags(). This function can set flags
   in the crt structure. The only flag supported at the moment is
   GNUTLS_X509_CRT_FLAG_IGNORE_SANITY which skips the certificate sanity
   checks on import.

** libgnutls: PKIX certificates with unknown critical extensions are rejected
   on verification with status GNUTLS_CERT_UNKNOWN_CRIT_EXTENSIONS. This
   behavior can be overridden by providing the flag GNUTLS_VERIFY_IGNORE_UNKNOWN_CRIT_EXTENSIONS
   to verification functions. Resolves gitlab issue #177.

** libgnutls: Refuse to generate a certificate with an illegal version, or an
   illegal serial number. That is, gnutls_x509_crt_set_version() and
   gnutls_x509_crt_set_serial(), will fail on input considered to be invalid
   in RFC5280.

** libgnutls: Calls to gnutls_record_send() and gnutls_record_recv()
   prior to handshake being complete are now refused. Addresses gitlab issue #158.

** libgnutls: Added support for PKCS#12 files with no salt (zero length) in their
   password encoding, and PKCS#12 files using SHA384 and SHA512 as MAC.

** libgnutls: Exported functions to encode and decode DSA and ECDSA r,s values.

** libgnutls: Added new callback setting function to gnutls_privkey_t for external
   keys. The new function (gnutls_privkey_import_ext4), allows signing in addition
   to previous algorithms (RSA PKCS#1 1.5, DSA, ECDSA), with RSA-PSS and Ed25519
   keys.

** libgnutls: Introduced the %VERIFY_ALLOW_BROKEN and %VERIFY_ALLOW_SIGN_WITH_SHA1
   priority string options. These allows enabling all broken and SHA1-based signature
   algorithms in certificate verification, respectively.

** libgnutls: 3DES-CBC is no longer included in the default priorities
   list. It has to be explicitly enabled, e.g., with a string like
   "NORMAL:+3DES-CBC".

** libgnutls: SHA1 was marked as insecure for signing certificates. Verification
   of certificates signed with SHA1 is now considered insecure and will
   fail, unless flags intended to enable broken algorithms are set. Other uses
   of SHA1 are still allowed. This can be reverted on compile time with the configure
   flag --enable-sha1-support.

** libgnutls: RIPEMD160 was marked as insecure for certificate signatures. Verification
   of certificates signed with RIPEMD160 hash algorithm is now considered insecure and
   will fail, unless flags intended to enable broken algorithms are set.

** libgnutls: No longer enable SECP192R1 and SECP224R1 by default on TLS handshakes.
   These curves were rarely used for that purpose, provide no advantage over
   x25519 and were deprecated by TLS 1.3.

** libgnutls: Removed support for DEFLATE, or any other compression method.

** libgnutls: OpenPGP authentication was removed; the resulting library is ABI
   compatible, with the openpgp related functions being stubs that fail
   on invocation.

** libgnutls: Removed support for libidn (i.e., IDNA2003); gnutls can now be compiled
   only with libidn2 which provides IDNA2008.

** certtool: The option '--load-ca-certificate' can now accept PKCS#11
   URLs in addition to files.

** certtool: The option '--load-crl' can now be used when generating PKCS#12
   files (i.e., in conjunction with '--to-p12' option).

** certtool: Keys with provable RSA and DSA parameters are now only read and
   exported from PKCS#8 form, following draft-mavrogiannopoulos-pkcs8-validated-parameters-00.txt.
   This removes support for the previous a non-standard key format.

** certtool: Added support for generating, printing and handling RSA-PSS and
   Ed25519 keys and certificates.

** certtool: the parameters --rsa, --dsa and --ecdsa to --generate-privkey are now
   deprecated, replaced by the --key-type option.

** p11tool: The --generate-rsa, --generate-ecc and --generate-dsa options were
   replaced by the --generate-privkey option.

** psktool: Generate 256-bit keys by default.

** gnutls-server: Increase request buffer size to 16kb, and added the --alpn and
   --alpn-fatal options, allowing testing of ALPN negotiation.

** API and ABI modifications:
gnutls_encode_rs_value: Added
gnutls_decode_rs_value: Added
gnutls_base64_encode2: Added
gnutls_base64_decode2: Added
gnutls_x509_crt_set_flags: Added
gnutls_x509_crt_check_ip: Added
gnutls_x509_ext_import_inhibit_anypolicy: Added
gnutls_x509_ext_export_inhibit_anypolicy: Added
gnutls_x509_crt_get_inhibit_anypolicy: Added
gnutls_x509_crt_set_inhibit_anypolicy: Added
gnutls_pubkey_export_rsa_raw2: Added
gnutls_pubkey_export_dsa_raw2: Added
gnutls_pubkey_export_ecc_raw2: Added
gnutls_privkey_export_rsa_raw2: Added
gnutls_privkey_export_dsa_raw2: Added
gnutls_privkey_export_ecc_raw2: Added
gnutls_x509_spki_init: Added
gnutls_x509_spki_deinit: Added
gnutls_x509_spki_get_pk_algorithm: Added
gnutls_x509_spki_set_pk_algorithm: Added
gnutls_x509_spki_get_digest_algorithm: Added
gnutls_x509_spki_set_digest_algorithm: Added
gnutls_x509_spki_get_salt_size: Added
gnutls_x509_spki_set_salt_size: Added
gnutls_x509_crt_set_spki: Added
gnutls_x509_crt_get_spki: Added
gnutls_x509_privkey_get_spki: Added
gnutls_x509_privkey_set_spki: Added
gnutls_x509_crq_get_spki: Added
gnutls_x509_crq_set_spki: Added
gnutls_pubkey_set_spki: Added
gnutls_pubkey_get_spki: Added
gnutls_privkey_set_spki: Added
gnutls_privkey_get_spki: Added
gnutls_privkey_import_ext4: Added
GNUTLS_EXPORT_FLAG_NO_LZ: Added
GNUTLS_DT_IP_ADDRESS: Added
GNUTLS_X509_CRT_FLAG_IGNORE_SANITY: Added
GNUTLS_CERT_UNKNOWN_CRIT_EXTENSIONS: Added
GNUTLS_VERIFY_ALLOW_SIGN_WITH_SHA1: Added
GNUTLS_VERIFY_DO_NOT_ALLOW_IP_MATCHES: Added
GNUTLS_VERIFY_IGNORE_UNKNOWN_CRIT_EXTENSIONS: Added
GNUTLS_SFLAGS_RFC7919: Added


* Version 3.5.7 (released 2016-12-8)

** libgnutls: Include CHACHA20-POLY1305 ciphersuites in the SECURE128
   and SECURE256 priority strings.

** libgnutls: Require libtasn1 4.9; this ensures gnutls will correctly
   operate with OIDs which have elements that exceed 2^32.

** libgnutls: The DN decoding functions output the traditional DN format
   rather than the strict RFC4514 compliant textual DN. This reverts the
   3.5.6 introduced change, and allows applications which depended on the
   previous format to continue to function. Introduced new functions which
   output the strict format by default, and can revert to the old one using
   a flag.

** libgnutls: Improved TPM key handling. Check authorization requirements
   prior to using a key and fix issue on loop for PIN input. Patches by
   James Bottomley.

** libgnutls: In all functions accepting UTF-8 passwords, ensure that
   passwords are normalized according to RFC7613. When invalid UTF-8
   passwords are detected, they are only tolerated for decryption.
   This introduces a libunistring dependency on GnuTLS. A version of
   libunistring is included in the library for the platforms that do
   not ship it; it can be used with the '--with-included-unistring'
   option to configure script.

** libgnutls: When setting a subject alternative name in a certificate
   which is in UTF-8 format, it will transparently be converted to IDNA form
   prior to storing.

** libgnutls: GNUTLS_CRT_PRINT_ONELINE flag on gnutls_x509_crt_print()
   will print the SHA256 key-ID instead of a certificate fingerprint.

** libgnutls: enhance the PKCS#7 verification capabilities. In the case
   signers that are not discoverable using the trust list or input, use
   the stored list as pool to generate a trusted chain to the signer.

** libgnutls: Improved MTU calculation precision for the CBC ciphersuites
   under DTLS.

** libgnutls: [added missing news entry since 3.5.0]
   No longer tolerate certificate key usage violations for
   TLS signature verification, and decryption. That is GnuTLS will fail
   to connect to servers which incorrectly use a restricted to signing certificate
   for decryption, or vice-versa. This reverts the lax behavior introduced
   in 3.1.0, due to several such broken servers being available. The %COMPAT
   priority keyword can be used to work-around connecting on these servers.

** certtool: When exporting a CRQ in DER format ensure no text data are
   intermixed. Patch by Dmitry Eremin-Solenikov.

** certtool: Include the SHA-256 variant of key ID in --certificate-info
   options.

** p11tool: Introduced the --initialize-pin and --initialize-so-pin
   options.

** API and ABI modifications:
gnutls_utf8_password_normalize: Added
gnutls_ocsp_resp_get_responder2: Added
gnutls_x509_crt_get_issuer_dn3: Added
gnutls_x509_crt_get_dn3: Added
gnutls_x509_rdn_get2: Added
gnutls_x509_dn_get_str2: Added
gnutls_x509_crl_get_issuer_dn3: Added
gnutls_x509_crq_get_dn3: Added


* Version 3.5.6 (released 2016-11-04)

** libgnutls: Enhanced the PKCS#7 parser to allow decoding old
   (pre-rfc5652) structures with arbitrary encapsulated content.

** libgnutls: Introduced a function group to set known DH parameters
   using groups from RFC7919.

** libgnutls: Added more strict RFC4514 textual DN encoding and decoding.
   Now the generated textual DN is in reverse order according to RFC4514,
   and functions which generate a DN from strings such gnutls_x509_crt_set_*dn()
   set the expected DN (reverse of the provided string).

** libgnutls: Introduced time and constraints checks in the end certificate
   in the gnutls_x509_crt_verify_data2() and gnutls_pkcs7_verify_direct()
   functions.

** libgnutls: Set limits on the maximum number of alerts handled. That is,
   applications using gnutls could be tricked into an busy loop if the
   peer sends continuously alert messages. Applications which set a maximum
   handshake time (via gnutls_handshake_set_timeout) will eventually recover
   but others may remain in a busy loops indefinitely. This is related but
   not identical to CVE-2016-8610, due to the difference in alert handling
   of the libraries (gnutls delegates that handling to applications).

** libgnutls: Reverted the change which made the gnutls_certificate_set_*key*
   functions return an index (introduced in 3.5.5), to avoid affecting programs
   which explicitly check success of the function as equality to zero. In order
   for these functions to return an index an explicit call to gnutls_certificate_set_flags
   with the GNUTLS_CERTIFICATE_API_V2 flag is now required.

** libgnutls: Reverted the behavior of sending a status request extension even
   without a response (introduced in 3.5.5). That is, we no longer reply to a
   client's hello with a status request, with a status request extension. Although
   that behavior is legal, it creates incompatibility issues with releases in
   the gnutls 3.3.x branch.

** libgnutls: Delayed the initialization of the random generator at
   the first call of gnutls_rnd(). This allows applications to load
   on systems which getrandom() would block, without blocking until
   real random data are needed.

** certtool: --get-dh-params will output parameters from the RFC7919
   groups.

** p11tool: improvements in --initialize option.

** API and ABI modifications:
GNUTLS_CERTIFICATE_API_V2: Added
GNUTLS_NO_TICKETS: Added
gnutls_pkcs7_get_embedded_data_oid: Added
gnutls_anon_set_server_known_dh_params: Added
gnutls_certificate_set_known_dh_params: Added
gnutls_psk_set_server_known_dh_params: Added
gnutls_x509_crt_check_key_purpose: Added


* Version 3.5.5 (released 2016-10-09)

** libgnutls: enhanced gnutls_certificate_set_ocsp_status_request_file()
   to allow importing multiple OCSP request files, one for each chain
   provided.

** libgnutls: The gnutls_certificate_set_key* functions return an
   index of the added chain. That index can be used either with
   gnutls_certificate_set_ocsp_status_request_file(), or with
   gnutls_certificate_get_crt_raw() and friends.

** libgnutls: Added SHA*, AES-GCM, AES-CCM and AES-CBC optimized implementations
   for the aarch64 architecture. Uses Andy Polyakov's assembly code.

** libgnutls: Ensure proper cleanups on gnutls_certificate_set_*key()
   failures due to key mismatch. This prevents leaks or double freeing
   on such failures.

** libgnutls: Increased the maximum size of the handshake message hash.
   This will allow the library to cope better with larger packets, as
   the ones offered by current TLS 1.3 drafts.

** libgnutls: Allow to use client certificates despite them containing
   disallowed algorithms for a session. That allows for example a client
   to use DSA-SHA1 due to his old DSA certificate, without requiring him
   to enable DSA-SHA1 (and thus make it acceptable for the server's certificate).

** libgnutls: Reverted AESNI code on x86 to earlier version as the
   latest version was creating position depending code. Added checks
   in the CI to detect position depending code early.

** guile: Update code to the I/O port API of Guile >= 2.1.4
   This makes sure the GnuTLS bindings will work with the forthcoming 2.2
   stable series of Guile, of which 2.1 is a preview.

** API and ABI modifications:
gnutls_certificate_set_ocsp_status_request_function2: Added
gnutls_session_ext_register: Added
gnutls_session_supplemental_register: Added
GNUTLS_E_PK_INVALID_PUBKEY: Added
GNUTLS_E_PK_INVALID_PRIVKEY: Added


* Version 3.5.4 (released 2016-09-08)

** libgnutls: Corrected the comparison of the serial size in OCSP response.
   Previously the OCSP certificate check wouldn't verify the serial length
   and could succeed in cases it shouldn't (GNUTLS-SA-2016-3).
   Reported by Stefan Buehler.

** libgnutls: Added support for IP name constraints. Patch by Martin Ukrop.

** libgnutls: Added support of PKCS#8 file decryption using DES-CBC-MD5. This
   is added to allow decryption of PKCS #8 private keys from openssl prior to 1.1.0.

** libgnutls: Added support for decrypting PKCS#8 files which use HMAC-SHA256
   as PRF. This allow decrypting PKCS #8 private keys generated with openssl 1.1.0.

** libgnutls: Added support for internationalized passwords in PKCS#12 files.
   Previous versions would only encrypt or decrypt using passwords from the ASCII
   set.

** libgnutls: Addressed issue with PKCS#11 signature generation on ECDSA
   keys. The signature is now written as unsigned integers into the DSASignatureValue
   structure. Previously signed integers could be written depending on what
   the underlying module would produce. Addresses #122.

** gnutls-cli: Fixed starttls regression from 3.5.3.

** API and ABI modifications:
GNUTLS_E_MALFORMED_CIDR: Added
gnutls_x509_cidr_to_rfc5280: Added
gnutls_oid_to_mac: Added


* Version 3.5.3 (released 2016-08-09)

** libgnutls: Added support for TCP fast open (RFC7413), allowing
   to reduce by one round-trip the handshake process. Based on proposal and
   patch by Tim Ruehsen.

** libgnutls: Adopted a simpler with less memory requirements DTLS sliding
   window implementation. Based on Fridolin Pokorny's implementation for
   AF_KTLS.

** libgnutls: Use getrandom where available via the syscall interface.
   This works around an issue of not-using getrandom even if it exists
   since glibc doesn't declare such function.

** libgnutls: Fixed DNS name constraints checking in the case of empty
   intersection of domain names in the chain. Report and fix by Martin Ukrop.

** libgnutls: Fixed name constraints checking in the case of chains
   where the higher level certificates contained different types of
   constraints than the ones present in the lower intermediate CAs.
   Report and fix by Martin Ukrop.

** libgnutls: Dropped support for the EGD random generator.

** libgnutls: Allow the decoding of raw elements (starting with #)
   in RFC4514 DN string decoding.

** libgnutls: Fixes in gnutls_x509_crt_list_import2, which was
   ignoring flags if all certificates in the list fit within the
   initially allocated memory. Patch by Tim Kosse.

** libgnutls: Corrected issue which made gnutls_certificate_get_x509_crt()
   to return invalid pointers when returned more than a single certificate.
   Report and fix by Stefan Sørensen.

** libgnutls: Fix gnutls_pkcs12_simple_parse to always extract the complete chain,
   even when the extra_certs was non-null. Report and fix by Stefan Sørensen.

** certtool: Added the "add_extension" and "add_critical_extension"
   template options. This allows specifying arbitrary extensions into
   certificates and certificate requests.

** gnutls-cli: Added the --fastopen option.

** API and ABI modifications:
GNUTLS_E_UNAVAILABLE_DURING_HANDSHAKE: Added
gnutls_x509_crq_set_extension_by_oid: Added
gnutls_x509_dn_set_str: Added
gnutls_transport_set_fastopen: Added


* Version 3.5.2 (released 2016-07-06)

** libgnutls: Address issue when utilizing the p11-kit trust store
   for certificate verification (GNUTLS-SA-2016-2).

** libgnutls: Fixed DTLS handshake packet reconstruction. Reported by
   Guillaume Roguez.

** libgnutls: Fixed issues with PKCS#11 reading of sensitive objects
   from SafeNet Network HSM. Reported by Anthony Alba in #108.

** libgnutls: Corrected the writing of PKCS#11 CKA_SERIAL_NUMBER. Report
   and fix by Stanislav Židek.

** libgnutls: Added AES-GCM optimizations using the AVX and MOVBE
   instructions. Uses Andy Polyakov's assembly code.

** API and ABI modifications:
No changes since last version.


* Version 3.5.1 (released 2016-06-14)

** libgnutls: The SSL 3.0 protocol support can completely be removed
   using a compile time option. The configure option is --disable-ssl3-support.

** libgnutls: The SSL 2.0 client hello support can completely be removed
   using a compile time option. The configure option is --disable-ssl2-support.

** libgnutls: Added support for OCSP Must staple PKIX extension. That is,
   implemented the RFC7633 TLSFeature for OCSP status request extension.
   Feature implemented by Tim Kosse.

** libgnutls: More strict OCSP staple verification. That is, no longer
   ignore invalid or too old OCSP staples. The previous behavior was
   to rely on application use gnutls_ocsp_status_request_is_checked(),
   while the new behavior is to include OCSP verification by default
   and set the GNUTLS_CERT_INVALID_OCSP_STATUS verification flag on error.

** libgnutls: Treat CA certificates with the "Server Gated Cryptography" key
   purpose OIDs equivalent to having the GNUTLS_KP_TLS_WWW_SERVER OID. This
   improves interoperability with several old intermediate CA certificates
   carrying these legacy OIDs.

** libgnutls: Re-read the system wide priority file when needed. Patch by
   Daniel P. Berrange.

** libgnutls: Allow for fallback in system-specific initial keywords
   (prefixed with '@'). That allows to specify a keyword such as
   "@KEYWORD1,KEYWORD2" which will use the first available of these
   two keywords. Patch by Daniel P. Berrange.

** libgnutls: The SSLKEYLOGFILE environment variable can be used to log
   session keys. These session keys are compatible with the NSS Key Log
   Format and can be used to decrypt the session for debugging using
   wireshark.

** API and ABI modifications:
GNUTLS_CERT_INVALID_OCSP_STATUS: Added
gnutls_x509_crt_set_crq_extension_by_oid: Added
gnutls_x509_ext_import_tlsfeatures: Added
gnutls_x509_ext_export_tlsfeatures: Added
gnutls_x509_tlsfeatures_add: Added
gnutls_x509_tlsfeatures_init: Added
gnutls_x509_tlsfeatures_deinit: Added
gnutls_x509_tlsfeatures_get: Added
gnutls_x509_crt_get_tlsfeatures: Added
gnutls_x509_crt_set_tlsfeatures: Added
gnutls_x509_crq_get_tlsfeatures: Added
gnutls_x509_crq_set_tlsfeatures: Added
gnutls_ext_get_name: Added


* Version 3.5.0 (released 2016-05-09)

** libgnutls: Added SHA3 based signing algorithms for DSA, RSA and ECDSA,
   based on https://csrc.nist.gov/groups/ST/crypto_apps_infra/csor/algorithms.html

** libgnutls: Added support for curve X25519 (RFC 7748, draft-ietf-tls-rfc4492bis-07).
   This curve is disabled by default as it is still on specification status. It
   can be enabled using the priority string modifier +CURVE-X25519.

** libgnutls: Added support for TLS false start (draft-ietf-tls-falsestart-01)
   by introducing gnutls_init() flag GNUTLS_ENABLE_FALSE_START (#73).

** libgnutls: Added new APIs to access the FIPS186-4 (Shawe-Taylor based) provable
   RSA and DSA parameter generation from a seed.

** libgnutls: The CHACHA20-POLY1305 ciphersuite is enabled by default. This
   cipher is prioritized after AES-GCM.

** libgnutls: On a rehandshake ensure that the certificate of the peer or
   its username remains the same as in previous handshakes. That is to protect
   applications which do not check user credentials on rehandshakes. The
   threat to address depends on the application protocol. Primarily it
   protects against applications which authenticate the peer initially and
   perform accounting using the session's information, from being misled
   by a rehandshake which switches the peer's identity. Applications can
   disable this protection by using the %GNUTLS_ALLOW_ID_CHANGE flag in
   gnutls_init().

** libgnutls: No longer tolerate certificate key usage violations for
   TLS signature verification, and decryption. That is GnuTLS will fail
   to connect to servers which incorrectly use a restricted to signing certificate
   for decryption, or vice-versa. This reverts the lax behavior introduced
   in 3.1.0, due to several such broken servers being available. The %COMPAT
   priority keyword can be used to work-around connecting on these servers.

** libgnutls: Be strict in TLS extension decoding. That is, do not tolerate
   parsing errors in the extensions field and treat it as a typical Hello
   message structure. Reported by Hubert Kario (#40).

** libgnutls: Old and unsupported version numbers in client hellos are
   rejected with a "protocol_version" alert message. Reported by Hubert
   Kario (#42).

** libgnutls: Lifted the limitation of calling the gnutls_session_get_data*()
   functions, only on non-resumed sessions. This brings the API in par with
   its usage (#79).

** libgnutls: Follow RFC5280 strictly in name constraints computation. The
   permitted subtrees is intersected with any previous values. Report and
   patch by Daiki Ueno.

** libgnutls: Enforce the RFC 7627 (extended master secret) requirements on
   session resumption. Reported by Hubert Kario (#69).

** libgnutls: Consider the max-record TLS extension even when under DTLS.
   Reported by Peter Dettman (#61).

** libgnutls: Replaced writev() system call with sendmsg().

** libgnutls: Replaced select() system call with poll() on POSIX systems.

** libgnutls: Preload the system priority file on library load. This allows
   applications that chroot() to also use the system priorities.

** libgnutls: Applications are allowed to override the built-in key and
   certificate URLs.

** libgnutls: The gnutls.h header marks constant and pure functions explicitly.

** certtool: Added the ability to sign certificates using SHA3.

** certtool: Added the --provable and --verify-allow-broken options.

** gnutls-cli: The --dane option will cause verification failure if gnutls is not
   compiled with DANE support.

** crywrap: The tool was unbundled from gnutls' distribution. It can be found at
   https://github.com/nmav/crywrap

** guile: .go files are now built and installed

** guile: Fix compatibility issue of the test suite with Guile 2.1

** guile: When --with-guile-site-dir is passed, modules are installed in a
   versioned directory, typically $(datadir)/guile/site/2.0

** guile: Tests no longer leave zombie processes behind

** API and ABI modifications:
GNUTLS_FORCE_CLIENT_CERT: Added
GNUTLS_ENABLE_FALSE_START: Added
GNUTLS_INDEFINITE_TIMEOUT: Added
GNUTLS_ALPN_SERVER_PRECEDENCE: Added
GNUTLS_E_ASN1_EMBEDDED_NULL_IN_STRING: Added
GNUTLS_E_HANDSHAKE_DURING_FALSE_START: Added
gnutls_check_version_numeric: Added
gnutls_x509_crt_equals: Added
gnutls_x509_crt_equals2: Added
gnutls_x509_crt_set_subject_alt_othername: Added
gnutls_x509_crt_set_issuer_alt_othername: Added
gnutls_x509_crt_get_signature_oid: Added
gnutls_x509_crt_get_pk_oid: Added
gnutls_x509_crq_set_subject_alt_othername: Added
gnutls_x509_crq_get_pk_oid: Added
gnutls_x509_crq_get_signature_oid: Added
gnutls_x509_crl_get_signature_oid: Added
gnutls_x509_privkey_generate2: Added
gnutls_x509_privkey_get_seed: Added
gnutls_x509_privkey_verify_seed: Added
gnutls_privkey_generate2: Added
gnutls_privkey_get_seed: Added
gnutls_privkey_verify_seed: Added
gnutls_decode_ber_digest_info: Added
gnutls_encode_ber_digest_info: Added
gnutls_dh_params_import_dsa: Added
gnutls_session_get_master_secret: Added


* Version 3.4.3 (released 2015-07-12)

** libgnutls: Follow closely RFC5280 recommendations and use UTCTime for
   dates prior to 2050.

** libgnutls: Force 16-byte alignment to all input to ciphers (previously it
   was done only when cryptodev was enabled).

** libgnutls: Removed support for pthread_atfork() as it has undefined
   semantics when used with dlopen(), and may lead to a crash.

** libgnutls: corrected failure when importing plain files
   with gnutls_x509_privkey_import2(), and a password was provided.

** libgnutls: Don't reject certificates if a CA has the URI or IP address
   name constraints, and the end certificate doesn't have an IP address
   name or a URI set.

** libgnutls: set and read the hint in DHE-PSK and ECDHE-PSK ciphersuites.

** p11tool: Added --list-token-urls option, and print the token module name
   in list-tokens.

** API and ABI modifications:
gnutls_ecc_curve_get_oid: Added
gnutls_digest_get_oid: Added
gnutls_pk_get_oid: Added
gnutls_sign_get_oid: Added
gnutls_ecc_curve_get_id: Added
gnutls_oid_to_digest: Added
gnutls_oid_to_pk: Added
gnutls_oid_to_sign: Added
gnutls_oid_to_ecc_curve: Added
gnutls_pkcs7_get_signature_count: Added


* Version 3.4.2 (released 2015-06-16)

** libgnutls: DTLS blocking API is more robust against infinite blocking,
and will notify of more possible timeouts.

** libgnutls: corrected regression with Camellia-256-GCM cipher. Reported
by Manuel Pegourie-Gonnard.

** libgnutls: Introduced the GNUTLS_NO_SIGNAL flag to gnutls_init(). That
allows to disable SIGPIPE for writes done within gnutls.

** libgnutls: Enhanced the PKCS #7 API to allow signing and verification
of structures. API moved to gnutls/pkcs7.h header.

** certtool: Added options to generate PKCS #7 bundles and signed
structures.

** API and ABI modifications:
gnutls_x509_dn_get_str: Added
gnutls_pkcs11_get_raw_issuer_by_subject_key_id: Added
gnutls_x509_trust_list_get_issuer_by_subject_key_id: Added
gnutls_x509_crt_verify_data2: Added
gnutls_pkcs7_get_crt_raw2: Added
gnutls_pkcs7_signature_info_deinit: Added
gnutls_pkcs7_get_signature_info: Added
gnutls_pkcs7_verify_direct: Added
gnutls_pkcs7_verify: Added
gnutls_pkcs7_get_crl_raw2: Added
gnutls_pkcs7_sign: Added
gnutls_pkcs7_attrs_deinit: Added
gnutls_pkcs7_add_attr: Added
gnutls_pkcs7_get_attr: Added
gnutls_pkcs7_print: Added


* Version 3.4.1 (released 2015-05-03)

** libgnutls: gnutls_certificate_get_ours: will return the certificate even
if a callback was used to send it.

** libgnutls: Check for invalid length in the X.509 version field. Without
the check certificates with invalid length would be detected as having an
arbitrary version. Reported by Hanno Böck.

** libgnutls: Handle DNS name constraints with a leading dot. Patch by
Fotis Loukos.

** libgnutls: Updated system-keys support for windows to compile in more
versions of mingw. Patch by Tim Kosse.

** libgnutls: Fix for MD5 downgrade in TLS 1.2 signatures. Reported by
Karthikeyan Bhargavan [GNUTLS-SA-2015-2].

** libgnutls: Reverted: The gnutls_handshake() process will enforce a timeout
by default. That caused issues with non-blocking programs.

** certtool: It can generate SHA256 key IDs.

** gnutls-cli: fixed crash in --benchmark-ciphers. Reported by James Cloos.

** configure: re-enabled the --enable-local-libopts flag

** API and ABI modifications:
gnutls_x509_crt_get_pk_ecc_raw: Added


* Version 3.4.0 (released 2015-04-08)

** libgnutls: Added support for AES-CCM and AES-CCM-8 (RFC6655 and RFC7251)
ciphersuites. The former are enabled by default, the latter need to be
explicitly enabled, since they reduce the overall security level.

** libgnutls: Added support for Chacha20-Poly1305 ciphersuites following
draft-mavrogiannopoulos-chacha-tls-05 and draft-irtf-cfrg-chacha20-poly1305-10.
That is currently provided as technology preview and is not enabled by
default, since there are no assigned ciphersuite points by IETF and there
is no guarantee of compatibility between draft versions. The ciphersuite
priority string to enable it is "+CHACHA20-POLY1305".

** libgnutls: Added support for encrypt-then-authenticate in CBC
ciphersuites (RFC7366 -taking into account its errata text). This is
enabled by default and can be disabled using the %NO_ETM priority
string.

** libgnutls: Added support for the extended master secret
(triple-handshake fix) following draft-ietf-tls-session-hash-02.

** libgnutls: Added a new simple and hard to misuse AEAD API (crypto.h).

** libgnutls: SSL 3.0 is no longer included in the default priorities
list. It has to be explicitly enabled, e.g., with a string like
"NORMAL:+VERS-SSL3.0".

** libgnutls: ARCFOUR (RC4) is no longer included in the default priorities
list. It has to be explicitly enabled, e.g., with a string like
"NORMAL:+ARCFOUR-128".

** libgnutls: DSA signatures and DHE-DSS are no longer included in the
default priorities list. They have to be explicitly enabled, e.g., with
a string like "NORMAL:+DHE-DSS:+SIGN-DSA-SHA256:+SIGN-DSA-SHA1". The
DSA ciphersuites were dropped because they had no deployment at all
on the internet, to justify their inclusion.

** libgnutls: The priority string EXPORT was completely removed. The string
was already defunc as support for the EXPORT ciphersuites was removed in
GnuTLS 3.2.0.

** libgnutls: Added API to utilize system specific private keys in
"gnutls/system-keys.h". It is currently provided as technology preview
and is restricted to windows CNG keys.

** libgnutls: gnutls_x509_crt_check_hostname() and friends will use
RFC6125 comparison of hostnames. That introduces a dependency on libidn.

** libgnutls: Depend on p11-kit 0.23.1 to comply with the final
PKCS #11 URLs draft (draft-pechanec-pkcs11uri-21).

** libgnutls: Depend on nettle 3.1.

** libgnutls: Use getrandom() or getentropy() when available. That
avoids the complexity of file descriptor handling and issues with
applications closing all open file descriptors on startup.

** libgnutls: Use pthread_atfork() to detect fork when available.

** libgnutls: If a key purpose (extended key usage) is specified for verification,
it is applied into intermediate certificates. The verification result
GNUTLS_CERT_PURPOSE_MISMATCH is also introduced.

** libgnutls: When gnutls_certificate_set_x509_key_file2() is used in
combination with PKCS #11, or TPM URLs, it will utilize the provided
password as PIN if required. That removes the requirement for the
application to set a callback for PINs in that case.

** libgnutls: priority strings VERS-TLS-ALL and VERS-DTLS-ALL are
restricted to the corresponding protocols only, and the VERS-ALL
string is introduced to catch all possible protocols.

** libgnutls: Added helper functions to obtain information on PKCS #8
structures.

** libgnutls: Certificate chains which are provided to gnutls_certificate_credentials_t
will automatically be sorted instead of failing with GNUTLS_E_CERTIFICATE_LIST_UNSORTED.

** libgnutls: Added functions to export and set the record state. That
allows for gnutls_record_send() and recv() to be offloaded (to kernel,
hardware or any other subsystem).

** libgnutls: Added the ability to register application specific URL
types, which express certificates and keys using gnutls_register_custom_url().

** libgnutls: Added API to override existing ciphers, digests and MACs, e.g.,
to override AES-GCM using a system-specific accelerator. That is, (crypto.h)
gnutls_crypto_register_cipher(), gnutls_crypto_register_aead_cipher(),
gnutls_crypto_register_mac(), and gnutls_crypto_register_digest().

** libgnutls: Added gnutls_ext_register() to register custom extensions.
Contributed by Thierry Quemerais.

** libgnutls: Added gnutls_supplemental_register() to register custom
supplemental data handshake messages. Contributed by Thierry Quemerais.

** libgnutls-openssl: it is no longer built by default.


** certtool: Added --p8-info option, which will print PKCS #8 information
even if the password is not available.

** certtool: --key-info option will print PKCS #8 encryption information
when available.

** certtool: Added the --key-id and --fingerprint options.

** certtool: Added the --verify-hostname, --verify-email and --verify-purpose
options to be used in certificate chain verification, to simulate verification
for specific hostname and key purpose (extended key usage).

** certtool: --p12-info option will print PKCS #12 MAC and cipher information
when available.

** certtool: it will print the A-label (ACE) names in addition to UTF-8.

** p11tool: added options --set-id and --set-label.

** gnutls-cli: added options --priority-list and --save-cert.

** guile: Deprecated priority API has been removed. The old priority API,
which had been deprecated for some time, is now gone; use 'set-session-priorities!'
instead.

** guile: Remove RSA parameters and related procedures. This API had been
deprecated.

** guile: Fix compilation on MinGW. Previously only the static version of the
'guile-gnutls-v-2' library would be built, preventing dynamic loading from Guile.

** API and ABI modifications:
gnutls_record_get_state: Added
gnutls_record_set_state: Added
gnutls_aead_cipher_init: Added
gnutls_aead_cipher_decrypt: Added
gnutls_aead_cipher_encrypt: Added
gnutls_aead_cipher_deinit: Added
gnutls_pkcs12_generate_mac2: Added
gnutls_pkcs12_mac_info: Added
gnutls_pkcs12_bag_enc_info: Added
gnutls_pkcs8_info: Added
gnutls_pkcs_schema_get_name: Added
gnutls_pkcs_schema_get_oid: Added
gnutls_pcert_export_x509: Added
gnutls_pcert_export_openpgp: Added
gnutls_pcert_import_x509_list: Added
gnutls_pkcs11_privkey_cpy: Added
gnutls_x509_crq_get_signature_algorithm: Added
gnutls_x509_trust_list_iter_get_ca: Added
gnutls_x509_trust_list_iter_deinit: Added
gnutls_x509_trust_list_get_issuer_by_dn: Added
gnutls_pkcs11_get_raw_issuer_by_dn: Added
gnutls_certificate_get_trust_list: Added
gnutls_privkey_export_x509: Added
gnutls_privkey_export_pkcs11: Added
gnutls_privkey_export_openpgp: Added
gnutls_privkey_import_ext3: Added
gnutls_certificate_get_x509_key: Added
gnutls_certificate_get_x509_crt: Added
gnutls_certificate_get_openpgp_key: Added
gnutls_certificate_get_openpgp_crt: Added
gnutls_record_discard_queued: Added
gnutls_session_ext_master_secret_status: Added
gnutls_priority_string_list: Added
gnutls_dh_params_import_raw2: Added
gnutls_memset: Added
gnutls_memcmp: Added
gnutls_pkcs12_bag_set_privkey: Added
gnutls_ocsp_resp_get_responder_raw_id: Added
gnutls_system_key_iter_deinit: Added
gnutls_system_key_iter_get_info: Added
gnutls_system_key_delete: Added
gnutls_system_key_add_x509: Added
gnutls_system_recv_timeout: Added
gnutls_register_custom_url: Added
gnutls_pkcs11_obj_list_import_url3: Added
gnutls_pkcs11_obj_list_import_url4: Added
gnutls_pkcs11_obj_set_info: Added
gnutls_crypto_register_cipher: Added
gnutls_crypto_register_aead_cipher: Added
gnutls_crypto_register_mac: Added
gnutls_crypto_register_digest: Added
gnutls_ext_register: Added
gnutls_supplemental_register: Added
gnutls_supplemental_recv: Added
gnutls_supplemental_send: Added
gnutls_openpgp_crt_check_email: Added
gnutls_x509_crt_check_email: Added
gnutls_handshake_set_hook_function: Modified
gnutls_pkcs11_privkey_generate3: Added
gnutls_pkcs11_copy_x509_crt2: Added
gnutls_pkcs11_copy_x509_privkey2: Added
gnutls_pkcs11_obj_list_import_url: Removed
gnutls_pkcs11_obj_list_import_url2: Removed
gnutls_certificate_client_set_retrieve_function: Removed
gnutls_certificate_server_set_retrieve_function: Removed
gnutls_certificate_set_rsa_export_params: Removed
gnutls_certificate_type_set_priority: Removed
gnutls_cipher_set_priority: Removed
gnutls_compression_set_priority: Removed
gnutls_kx_set_priority: Removed
gnutls_mac_set_priority: Removed
gnutls_protocol_set_priority: Removed
gnutls_rsa_export_get_modulus_bits: Removed
gnutls_rsa_export_get_pubkey: Removed
gnutls_rsa_params_cpy: Removed
gnutls_rsa_params_deinit: Removed
gnutls_rsa_params_export_pkcs1: Removed
gnutls_rsa_params_export_raw: Removed
gnutls_rsa_params_generate2: Removed
gnutls_rsa_params_import_pkcs1: Removed
gnutls_rsa_params_import_raw: Removed
gnutls_rsa_params_init: Removed
gnutls_sign_callback_get: Removed
gnutls_sign_callback_set: Removed
gnutls_x509_crt_verify_data: Removed
gnutls_x509_crt_verify_hash: Removed
gnutls_pubkey_get_verify_algorithm: Removed
gnutls_x509_crt_get_verify_algorithm: Removed
gnutls_pubkey_verify_hash: Removed
gnutls_pubkey_verify_data: Removed
gnutls_record_set_max_empty_records: Removed

guile:
set-session-cipher-priority!: Removed
set-session-mac-priority!: Removed
set-session-compression-method-priority!: Removed
set-session-kx-priority!: Removed
set-session-protocol-priority!: Removed
set-session-certificate-type-priority!: Removed
set-session-default-priority!: Removed
set-session-default-export-priority!: Removed
make-rsa-parameters: Removed
rsa-parameters?: Removed
set-certificate-credentials-rsa-export-parameters!: Removed
pkcs1-import-rsa-parameters: Removed
pkcs1-export-rsa-parameters: Removed



* Version 3.3.6 (released 2014-07-23)

** libgnutls: Use inet_ntop to print IP addresses when available

** libgnutls: gnutls_x509_crt_check_hostname and friends will also check
IP addresses, and match documented behavior. Reported by David Woodhouse.

** libgnutls: DSA key generation in FIPS140-2 mode doesn't allow 1024
bit parameters.

** libgnutls: fixed issue in gnutls_pkcs11_reinit() which prevented tokens
being usable after a reinitialization.

** libgnutls: fixed PKCS #11 private key operations after a fork.

** libgnutls: fixed PKCS #11 ECDSA key generation.

** libgnutls: The GNUTLS_CPUID_OVERRIDE environment variable can be used to
explicitly enable/disable the use of certain CPU capabilities. Note that CPU
detection cannot be overridden, i.e., VIA options cannot be enabled on an Intel
CPU. The currently available options are:
  0x1: Disable all run-time detected optimizations
  0x2: Enable AES-NI
  0x4: Enable SSSE3
  0x8: Enable PCLMUL
  0x100000: Enable VIA padlock
  0x200000: Enable VIA PHE
  0x400000: Enable VIA PHE SHA512

** libdane: added dane_query_to_raw_tlsa(); patch by Simon Arlott.

** p11tool: use GNUTLS_SO_PIN to read the security officer's PIN if set.

** p11tool: ask for label when one isn't provided.

** p11tool: added --batch parameter to disable any interactivity.

** p11tool: will not implicitly enable so-login for certain types of
objects. That avoids issues with tokens that require different login
types.

** certtool/p11tool: Added the --curve parameter which allows to explicitly
specify the curve to use.

** API and ABI modifications:
gnutls_certificate_set_x509_trust_dir: Added
gnutls_x509_trust_list_add_trust_dir: Added


* Version 3.3.5 (released 2014-06-26)

** libgnutls: Added gnutls_record_recv_packet() and gnutls_packet_deinit().
These functions provide a variant of gnutls_record_recv() that avoids
the final memcpy of data.

** libgnutls: gnutls_x509_crl_iter_crt_serial() was added as a
faster variant of gnutls_x509_crl_get_crt_serial() when coping with
very large structures.

** libgnutls: When the decoding of a printable DN element fails, then treat
it as unknown and print its hex value rather than failing. That works around
an issue in a TURKTRST root certificate which improperly encodes the
X520countryName element.

** libgnutls: gnutls_x509_trust_list_add_trust_file() will return the number
of certificates present in a PKCS #11 token when loading it.

** libgnutls: Allow the post client hello callback to put the handshake on
hold, by returning GNUTLS_E_AGAIN or GNUTLS_E_INTERRUPTED.

** certtool: option --to-p12 will now consider --load-ca-certificate

** certtol: Added option to specify the PKCS #12 friendly name on command
line.

** p11tool: Allow marking a certificate copied to a token as a CA.

** API and ABI modifications:
GNUTLS_PKCS11_OBJ_FLAG_MARK_CA: Added
gnutls_x509_crl_iter_deinit: Added
gnutls_x509_crl_iter_crt_serial: Added
gnutls_record_recv_packet: Added
gnutls_packet_deinit: Added
gnutls_packet_get: Added


* Version 3.3.4 (released 2014-05-31)

** libgnutls: Updated Andy Polyakov's assembly code. That prevents a
crash on certain CPUs.

** API and ABI modifications:
No changes since last version.


* Version 3.3.3 (released 2014-05-30)

** libgnutls: Eliminated memory corruption issue in Server Hello parsing.
Issue reported by Joonas Kuorilehto of Codenomicon.

** libgnutls: gnutls_global_set_mutex() was modified to operate with the
new initialization process.

** libgnutls: Increased the maximum certificate size buffer
in the PKCS #11 subsystem.

** libgnutls: Check the return code of getpwuid_r() instead of relying
on the result value. That avoids issue in certain systems, when using
tofu authentication and the home path cannot be determined. Issue reported
by Viktor Dukhovni.

** libgnutls-dane: Improved dane_verify_session_crt(), which now attempts to
create a full chain. This addresses points from https://savannah.gnu.org/support/index.php?108552

** gnutls-cli: --dane will only check the end certificate if PKIX validation
has been disabled.

** gnutls-cli: --benchmark-soft-ciphers has been removed. That option cannot
be emulated with the implicit initialization of gnutls.

** certtool: Allow multiple organizations and organizational unit names to
be specified in a template.

** certtool: Warn when invalid configuration options are set to a template.

** ocsptool: Include path in ocsp request. This resolves #108582
(https://savannah.gnu.org/support/?108582), reported by Matt McCutchen.

** API and ABI modifications:
gnutls_credentials_get: Added


* Version 3.3.2 (released 2014-05-06)

** libgnutls: Added the 'very weak' certificate verification profile
that corresponds to 64-bit security level.

** libgnutls: Corrected file descriptor leak on random generator
initialization.

** libgnutls: Corrected file descriptor leak on PSK password file
reading. Issue identified using the Codenomicon TLS test suite.

** libgnutls: Avoid deinitialization if initialization has failed.

** libgnutls: null-terminate othername alternative names.

** libgnutls: gnutls_x509_trust_list_get_issuer() will operate correctly
on a PKCS #11 trust list.

** libgnutls: Several small bug fixes identified using valgrind and
the Codenomicon TLS test suite.

** libgnutls-dane: Accept a certificate using DANE if there is at least one
entry that matches the certificate. Patch by simon [at] arlott.org.

** libgnutls-guile: Fixed compilation issue.

** certtool: Allow exporting a CRL on DER format.

** certtool: The ECDSA keys generated by default use the SECP256R1 curve
which is supported more widely than the previously used SECP224R1.

** API and ABI modifications:
GNUTLS_PROFILE_VERY_WEAK: Added


* Version 3.3.1 (released 2014-04-19)

** libgnutls: Enforce more strict checks to heartbeat messages
concerning padding and payload. Suggested by Peter Dettman.

** libgnutls: Allow decoding PKCS #8 files with ECC parameters
from openssl.

** libgnutls: Several small bug fixes found by coverity.

** libgnutls: The conditionally available self-test functions
were moved to self-test.h.

** libgnutls: Fixed issue with the check of incoming data when two
different recv and send pointers have been specified. Reported and
investigated by JMRecio.

** libgnutls: Fixed issue in the RSA-PSK key exchange, which would
result to illegal memory access if a server hint was provided. Reported
by André Klitzing.

** libgnutls: Fixed client memory leak in the PSK key exchange, if a
server hint was provided.

** libgnutls: Corrected the *get_*_othername_oid() functions.

** API and ABI modifications:
No changes since last version.


* Version 3.3.0 (released 2014-04-10)

** libgnutls: The initialization of the library was moved to a
constructor. That is, gnutls_global_init() is no longer required
unless linking with a static library or a system that does not
support library constructors.

** libgnutls: static libraries are not built by default.

** libgnutls: PKCS #11 initialization is delayed to first usage.
That avoids long delays in gnutls initialization due to broken PKCS #11
modules.

** libgnutls: The PKCS #11 subsystem is re-initialized "automatically"
on the first PKCS #11 API call after a fork.

** libgnutls: certificate verification profiles were introduced
that can be specified as flags to verification functions. They
are enumerations in gnutls_certificate_verification_profiles_t
and can be converted to flags for use in a verification function
using GNUTLS_PROFILE_TO_VFLAGS().

** libgnutls: Added the ability to read system-specific initial
keywords, if they are prefixed with '@'. That allows a compile-time
specified configuration file to be used to read pre-configured priority
strings from. That can be used to impose system specific policies.

** libgnutls: Increased the default security level of priority
strings (NORMAL and PFS strings require at minimum a 1008 DH prime),
and set a verification profile by default.  The LEGACY keyword is
introduced to set the old defaults.

** libgnutls: Added support for the name constraints PKIX extension.
Currently only DNS names and e-mails are supported (no URIs, IPs
or DNs).

** libgnutls: Security parameter SEC_PARAM_NORMAL was renamed to
SEC_PARAM_MEDIUM to avoid confusion with the priority string NORMAL.

** libgnutls: Added new API in x509-ext.h to handle X.509 extensions.
This API handles the X.509 extensions in isolation, allowing to parse
similarly formatted extensions stored in other structures.

** libgnutls: When generating DSA keys the macro GNUTLS_SUBGROUP_TO_BITS
can be used to specify a particular subgroup as the number of bits in
gnutls_privkey_generate; e.g., GNUTLS_SUBGROUP_TO_BITS(2048, 256).

** libgnutls: DH parameter generation is now delegated to nettle.
That unfortunately has the side-effect that DH parameters longer than
3072 bits, cannot be generated (not without a nettle update).

** libgnutls: Separated nonce RNG from the main RNG. The nonce
random number generator is based on salsa20/12.

** libgnutls: The buffer alignment provided to crypto backend is
enforced to be 16-byte aligned, when compiled with cryptodev
support. That allows certain cryptodev drivers to operate more
efficiently.

** libgnutls: Return error when a public/private key pair that doesn't
match is set into a credentials structure.

** libgnutls: Depend on p11-kit 0.20.0 or later.

** libgnutls: The new padding (%NEW_PADDING) experimental TLS extension has
been removed. It was not approved by IETF.

** libgnutls: The experimental xssl library is removed from the gnutls
distribution.

** libgnutls: Reduced the number of gnulib modules used in the main library.

** libgnutls: Added priority string %DISABLE_WILDCARDS.

** libgnutls: Added the more extensible verification function
gnutls_certificate_verify_peers(), that allows checking, in addition
to a peer's DNS hostname, for the key purpose of the end certificate
(via PKIX extended key usage).

** certtool: Timestamps for serial numbers were increased to 8 bytes,
and in batch mode to 12 (appended with 4 random bytes).

** certtool: When no CRL number is provided (or value set to -1), then
a time-based number will be used, similarly to the serial generation
number in certificates.

** certtool: Print the SHA256 fingerprint of a certificate in addition
to SHA1.

** libgnutls: Added --enable-fips140-mode configuration option (unsupported).
That option enables (when running on FIPS140-enabled system):
 o RSA, DSA and DH key generation as in FIPS-186-4 (using provable primes)
 o The DRBG-CTR-AES256 deterministic random generator from SP800-90A.
 o Self-tests on initialization on ciphers/MACs, public key algorithms
   and the random generator.
 o HMAC-SHA256 verification of the library on load.
 o MD5 is included for TLS purposes but cannot be used by the high level
   hashing functions.
 o All ciphers except AES are disabled.
 o All MACs and hashes except GCM and SHA are disabled (e.g., HMAC-MD5).
 o All keys (temporal and long term) are zeroized after use.
 o Security levels are adjusted to the FIPS140-2 recommendations (rather
   than ECRYPT).

** API and ABI modifications:
GNUTLS_VERIFY_DO_NOT_ALLOW_WILDCARDS: Added
gnutls_certificate_verify_peers: Added
gnutls_privkey_generate: Added
gnutls_pkcs11_crt_is_known: Added
gnutls_fips140_mode_enabled: Added
gnutls_sec_param_to_symmetric_bits: Added
gnutls_pubkey_export_ecc_x962: Added (replaces gnutls_pubkey_get_pk_ecc_x962)
gnutls_pubkey_export_ecc_raw: Added (replaces gnutls_pubkey_get_pk_ecc_raw)
gnutls_pubkey_export_dsa_raw: Added (replaces gnutls_pubkey_get_pk_dsa_raw)
gnutls_pubkey_export_rsa_raw: Added (replaces gnutls_pubkey_get_pk_rsa_raw)
gnutls_pubkey_verify_params: Added
gnutls_privkey_export_ecc_raw: Added
gnutls_privkey_export_dsa_raw: Added
gnutls_privkey_export_rsa_raw: Added
gnutls_privkey_import_ecc_raw: Added
gnutls_privkey_import_dsa_raw: Added
gnutls_privkey_import_rsa_raw: Added
gnutls_privkey_verify_params: Added
gnutls_x509_crt_check_hostname2: Added
gnutls_openpgp_crt_check_hostname2: Added
gnutls_x509_name_constraints_init: Added
gnutls_x509_name_constraints_deinit: Added
gnutls_x509_crt_get_name_constraints: Added
gnutls_x509_name_constraints_add_permitted: Added
gnutls_x509_name_constraints_add_excluded: Added
gnutls_x509_crt_set_name_constraints: Added
gnutls_x509_name_constraints_get_permitted: Added
gnutls_x509_name_constraints_get_excluded: Added
gnutls_x509_name_constraints_check: Added
gnutls_x509_name_constraints_check_crt: Added
gnutls_x509_crl_get_extension_data2: Added
gnutls_x509_crt_get_extension_data2: Added
gnutls_x509_crq_get_extension_data2: Added
gnutls_subject_alt_names_init: Added
gnutls_subject_alt_names_deinit: Added
gnutls_subject_alt_names_get: Added
gnutls_subject_alt_names_set: Added
gnutls_x509_ext_import_subject_alt_names: Added
gnutls_x509_ext_export_subject_alt_names: Added
gnutls_x509_crl_dist_points_init: Added
gnutls_x509_crl_dist_points_deinit: Added
gnutls_x509_crl_dist_points_get: Added
gnutls_x509_crl_dist_points_set: Added
gnutls_x509_ext_import_crl_dist_points: Added
gnutls_x509_ext_export_crl_dist_points: Added
gnutls_x509_ext_import_name_constraints: Added
gnutls_x509_ext_export_name_constraints: Added
gnutls_x509_aia_init: Added
gnutls_x509_aia_deinit: Added
gnutls_x509_aia_get: Added
gnutls_x509_aia_set: Added
gnutls_x509_ext_import_aia: Added
gnutls_x509_ext_export_aia: Added
gnutls_x509_ext_import_subject_key_id: Added
gnutls_x509_ext_export_subject_key_id: Added
gnutls_x509_ext_export_authority_key_id: Added
gnutls_x509_ext_import_authority_key_id: Added
gnutls_x509_aki_init: Added
gnutls_x509_aki_get_id: Added
gnutls_x509_aki_get_cert_issuer: Added
gnutls_x509_aki_set_id: Added
gnutls_x509_aki_set_cert_issuer: Added
gnutls_x509_aki_deinit: Added
gnutls_x509_ext_import_private_key_usage_period: Added
gnutls_x509_ext_export_private_key_usage_period: Added
gnutls_x509_ext_import_basic_constraints: Added
gnutls_x509_ext_export_basic_constraints: Added
gnutls_x509_ext_import_key_usage: Added
gnutls_x509_ext_export_key_usage: Added
gnutls_x509_ext_import_proxy: Added
gnutls_x509_ext_export_proxy: Added
gnutls_x509_policies_init: Added
gnutls_x509_policies_deinit: Added
gnutls_x509_policies_get: Added
gnutls_x509_policies_set: Added
gnutls_x509_ext_import_policies: Added
gnutls_x509_ext_export_policies: Added
gnutls_x509_key_purpose_init: Added
gnutls_x509_key_purpose_deinit: Added
gnutls_x509_key_purpose_set: Added
gnutls_x509_key_purpose_get: Added
gnutls_x509_ext_import_key_purposes: Added
gnutls_x509_ext_export_key_purposes: Added
gnutls_digest_self_test: Added (conditionally)
gnutls_mac_self_test: Added (conditionally)
gnutls_pk_self_test: Added (conditionally)
gnutls_cipher_self_test: Added (conditionally)
gnutls_global_set_mem_functions: Deprecated


* Version 3.2.6 (released 2013-10-31)

** libgnutls: Support for TPM via trousers is now enabled by default.

** libgnutls: Camellia in GCM mode has been added in default priorities, and
GCM mode is prioritized over CBC in all of the default priority strings.

** libgnutls: Added ciphersuite GNUTLS_ECDHE_RSA_AES_256_CBC_SHA384.

** libgnutls: Fixed ciphersuites GNUTLS_ECDHE_ECDSA_CAMELLIA_256_CBC_SHA384,
GNUTLS_ECDHE_RSA_CAMELLIA_256_CBC_SHA384 and GNUTLS_PSK_CAMELLIA_128_GCM_SHA256.
Reported by Stefan Buehler.

** libgnutls: Added support for ISO OID for RSA-SHA1 signatures.

** libgnutls: Minimum acceptable DH group parameters were increased to 767
bits from 727.

** libgnutls: Added function to obtain random data from PKCS #11 tokens.
Contributed by Wolfgang Meyer zu Bergsten.

** gnulib: updated.

** libdane: Fixed a one-off bug in dane_query_tlsa() introduced by the
previous fix. Reported by Tomas Mraz.

** p11tool: Added option generate-random.

** API and ABI modifications:
gnutls_pkcs11_token_get_random: Added


* Version 3.2.5 (released 2013-10-23)

** libgnutls: Documentation and build-time fixes.

** libgnutls: Allow the generation of DH groups of less than 700 bits.

** libgnutls: Added several combinations of ciphersuites with SHA256 and SHA384 as MAC,
as well as Camellia with GCM.

** libdane: Added interfaces to allow initialization of dane_query_t from
external DNS resolutions, and to allow direct verification of a certificate
chain against a dane_query_t. Contributed by Christian Grothoff.

** libdane: Fixed a buffer overflow in dane_query_tlsa(). This could be
triggered by a DNS server supplying more than 4 DANE records. Report and fix
by Christian Grothoff.

** srptool: Fixed index command line option. Patch by Attila Molnar.

** gnutls-cli: Added support for inline commands, using the
--inline-commands-prefix and --inline-commands options. Patch by Raj Raman.

** certtool: pathlen constraint is now read correctly. Reported by
Christoph Seitz.

** API and ABI modifications:
gnutls_certificate_get_crt_raw: Added
dane_verify_crt_raw: Added
dane_raw_tlsa: Added


* Version 3.2.4 (released 2013-08-31)

** libgnutls: Fixes when session tickets and session DB are used.
Report and initial patch by Stefan Buehler.

** libgnutls: Added the RSA-PSK key exchange. Patch by by Frank Morgner,
based on previous patch by Bardenheuer GmbH and Bundesdruckerei GmbH.

** libgnutls: Added ciphersuites that use ARCFOUR with ECDHE. Patch
by Stefan Buehler.

** libgnutls: Added the PFS priority string option.

** libgnutls: Gnulib included files are strictly LGPLv2.

** libgnutls: Corrected gnutls_certificate_server_set_request().
Reported by Petr Pisar.

** API and ABI modifications:
gnutls_record_set_timeout: Exported


* Version 3.2.3 (released 2013-07-30)

** libgnutls: Fixes in parsing of priority strings. Patch by Stefan Buehler.

** libgnutls: Solve issue with received TLS packets that exceed 2^14.
(this fixes a bug that was accidentally introduced in 3.2.2)

** libgnutls: Removed gnulib modules under LGPLv3 that could possibly be
used by the library.

** libgnutls: Fixes in gnutls_record_send_range(). Report and initial fix by
Alfredo Pironti.

** API and ABI modifications:
gnutls_priority_kx_list: Added
gnutls_priority_mac_list: Added
gnutls_priority_cipher_list: Added


* Version 3.2.2 (released 2013-07-14)

** libgnutls: Several optimizations in the related to packet processing
subsystems.

** libgnutls: DTLS replay detection can now be disabled (to be used
in certain transport layers like SCTP).

** libgnutls: Fixes in SRTP extension generation when MKI is being
used.

** libgnutls: Added ability to set hooks before or after sending or receiving
any handshake message with gnutls_handshake_set_hook_function().

** API and ABI modifications:
GNUTLS_NO_REPLAY_PROTECTION: Added
gnutls_certificate_set_trust_list: Added
gnutls_cipher_get_tag_size: Added
gnutls_record_overhead_size: Added
gnutls_est_record_overhead_size: Added
gnutls_handshake_set_hook_function: Added
gnutls_handshake_description_get_name: Added
gnutls_digest_list: Added
gnutls_digest_get_id: Added
gnutls_digest_get_name: Added


* Version 3.2.1 (released 2013-06-01)

** libgnutls: Allow ECC when in SSL 3.0 to work-around a bug in certain
openssl versions.

** libgnutls: Fixes in interrupted function resumption. Report
and patch by Tim Kosse.

** libgnutls: Corrected issue when receiving client hello verify requests
in DTLS.

** libgnutls: Fixes in DTLS record overhead size calculations.

** libgnutls: gnutls_handshake_get_last_in() was fixed. Reported
by Mann Ern Kang.

** API and ABI modifications:
gnutls_session_set_id: Added


* Version 3.2.0 (released 2013-05-10)

** libgnutls: Use nettle's elliptic curve implementation.

** libgnutls: Added Salsa20 cipher

** libgnutls: Added UMAC-96 and UMAC-128

** libgnutls: Added ciphersuites involving Salsa20 and UMAC-96.
As they are not standardized they are defined using private ciphersuite
numbers.

** libgnutls: Added support for DTLS 1.2.

** libgnutls: Added support for the Application Layer Protocol Negotiation
(ALPN) extension.

** libgnutls: Removed support for the RSA-EXPORT ciphersuites.

** libgnutls: Avoid linking to librt (that also avoids unnecessary
linking to pthreads if p11-kit isn't used).

** API and ABI modifications:
gnutls_cipher_get_iv_size: Added
gnutls_hmac_set_nonce: Added
gnutls_mac_get_nonce_size: Added


* Version 3.1.10 (released 2013-03-22)

** certtool: When generating PKCS #12 files use by default the
ARCFOUR (RC4) cipher to be compatible with devices that don't
support AES with PKCS #12.

** libgnutls: Load CA certificates in android 4.x systems.

** libgnutls: Optimized CA certificate loading.

** libgnutls: Private keys are overwritten on deinitialization.

** libgnutls: PKCS #11 slots are scanned only when needed, not
on initialization. This speeds up gnutls initialization when smart
cards are present.

** libgnutls: Corrected issue in the (deprecated) external key
signing interface, when used with TLS 1.2. Reported by Bjorn H. Christensen.

** libgnutls: Fixes in openpgp handshake with fingerprints. Reported by
Joke de Buhr.

** libgnutls-dane: Updated DANE verification options.

** configure: Trust store file must be explicitly set or unset when
cross compiling.

** API and ABI modifications:
gnutls_x509_crt_get_issuer_dn2: Added
gnutls_x509_crt_get_dn2: Added
gnutls_x509_crl_get_issuer_dn2: Added
gnutls_x509_crq_get_dn2: Added
gnutls_x509_trust_list_remove_trust_mem: Added
gnutls_x509_trust_list_remove_trust_file: Added
gnutls_x509_trust_list_remove_cas: Added
gnutls_session_get_desc: Added
gnutls_privkey_sign_raw_data: Added
gnutls_privkey_status: Added


* Version 3.1.9 (released 2013-02-27)

** certtool: Option --to-p12 will now ask for a password to generate
a PKCS #12 file from an encrypted key file. Reported by Yan Fiz.

** libgnutls: Corrected issue in gnutls_pubkey_verify_data().

** libgnutls: Corrected parsing issue in XMPP within a subject
alternative name. Reported by James Cloos.

** libgnutls: gnutls_pkcs11_reinit() will reinitialize all PKCS #11
modules, and not only the ones loaded via p11-kit.

** libgnutls: Added function to check whether the private key is
still available (inserted).

** libgnutls: Try to detect fork even during nonce generation.

** API and ABI modifications:
gnutls_handshake_set_random: Added
gnutls_transport_set_int2: Added
gnutls_transport_get_int2: Added
gnutls_transport_get_int: Added
gnutls_record_cork: Exported
gnutls_record_uncork: Exported
gnutls_pkcs11_privkey_status: Added


* Version 3.1.8 (released 2013-02-10)

** libgnutls: Fixed issue in gnutls_x509_privkey_import2() which didn't return
GNUTLS_E_DECRYPTION_FAILED in all cases, and affect certtool operation
with encrypted keys. Reported by Yan Fiz.

** libgnutls: The minimum DH bits accepted by priorities NORMAL and
PERFORMANCE was set to previous defaults 727 bits. Reported by Diego
Elio Petteno.

** libgnutls: Corrected issue which prevented gnutls_pubkey_verify_hash()
to operate with long keys. Reported by Erik A Jensen.

** API and ABI modifications:
No changes since last version.


* Version 3.1.7 (released 2013-02-04)

** certtool: Added option "dn" which allows to directly set the DN
in a template from an RFC4514 string.

** danetool: Added options: --dlv and --insecure. Suggested by Paul Wouters.

** libgnutls-xssl: Added a new library to simplify GnuTLS usage.

** libgnutls-dane: Added function to specify a DLV file.

** libgnutls: Heartbeat code was made optional.

** libgnutls: Fixes in server side of DTLS-0.9.

** libgnutls: DN variable 'T' was expanded to 'title'.

** libgnutls: Fixes in record padding parsing to prevent a timing attack.
Issue reported by Kenny Paterson and Nadhem Alfardan.

** libgnutls: Added functions to directly set the DN in a certificate
or request from an RFC4514 string.

** libgnutls: Optimizations in the random generator. The re-seeding of
it is now explicitly done on every session deinit.

** libgnutls: Simplified the DTLS sliding window implementation.

** libgnutls: The minimum DH bits accepted by a client are now set
by the specified priority string. The current values correspond to the
previous defaults (727 bits), except for the SECURE128 and SECURE192
strings which increase the minimum to 1248 and 1776 respectively.

** libgnutls: Added the gnutls_record_cork() and uncork API to enable
buffering in sending application data.

** libgnutls: Removed default random padding, and added a length-hiding interface
instead.  Both the server and the client must support this extension. Whether
length-hiding can be used on a given session can be checked using
gnutls_record_can_use_length_hiding(). Contributed by Alfredo Pironti.

** libgnutls: Added the experimental %NEW_PADDING priority string. It enables
a new padding mechanism in TLS allowing arbitrary padding in TLS records
in all ciphersuites, which makes length-hiding more efficient and solves
the issues with timing attacks on CBC ciphersuites.

** libgnutls: Corrected gnutls_cipher_decrypt2() when used with AEAD
ciphers (i.e., AES-GCM). Reported by William McGovern.

** API and ABI modifications:
gnutls_db_check_entry_time: Added
gnutls_record_set_timeout: Added
gnutls_record_get_random_padding_status: Added
gnutls_x509_crt_set_dn: Added
gnutls_x509_crt_set_issuer_dn: Added
gnutls_x509_crq_set_dn: Added
gnutls_range_split: Added
gnutls_record_send_range: Added
gnutls_record_set_max_empty_records: Added
gnutls_record_can_use_length_hiding: Added
gnutls_rnd_refresh: Added
xssl_deinit: Added
xssl_flush: Added
xssl_read: Added
xssl_getdelim: Added
xssl_write: Added
xssl_printf: Added
xssl_sinit: Added
xssl_client_init: Added
xssl_server_init: Added
xssl_get_session: Added
xssl_get_verify_status: Added
xssl_cred_init: Added
xssl_cred_deinit: Added
dane_state_set_dlv_file: Added
GNUTLS_SEC_PARAM_EXPORT: Added
GNUTLS_SEC_PARAM_VERY_WEAK: Added


* Version 3.1.6 (released 2013-01-02)

** libgnutls: Fixed record padding parsing issue. Reported by Kenny
Paterson and Nadhem Alfardan.

** libgnutls: Several updates in the ASN.1 string handling subsystem.

** libgnutls: gnutls_x509_crt_get_policy() allows for a list of zero
policy qualifiers.

** libgnutls: Ignore heartbeat messages when received out-of-order,
instead of issuing an error.

** libgnutls: Stricter RSA PKCS #1 1.5 encoding and decoding. Reported
by Kikuchi Masashi.

** libgnutls: TPM support is disabled by default because GPL programs
cannot link with it. Use --with-tpm to enable it.

** libgnutls-guile: Fixed parallel compilation issue.

** gnutls-cli: It will try to connect to all possible returned addresses
before failing.

** API and ABI modifications:
No changes since last version.


* Version 3.1.5 (released 2012-11-24)

** libgnutls: Added functions to parse the certificates policies
extension.

** libgnutls: Handle BMPString (UCS-2) encoding in the Distinguished
Name by translating it to UTF-8 (works on windows or systems with iconv).

** libgnutls: Added PKCS #11 key generation function that returns the
public key on generation.

** libgnutls: Corrected bug in priority string parsing, that mostly
affected combined levels. Patch by Tim Kosse.

** certtool: The --pubkey-info option can be combined with the
--load-privkey or --load-request to print the corresponding public keys.

** certtool: It is able to set certificate policies via a template.

** certtool: Added --hex-numbers option which prints big numbers in
an easier to parse format.

** p11tool: After key generation, outputs the public key (useful in
tokens that do not store the public key).

** danetool: It is being built even without libgnutls-dane (the
--check functionality is disabled though).

** API and ABI modifications:
gnutls_pkcs11_privkey_generate2: Added
gnutls_x509_crt_get_policy: Added
gnutls_x509_crt_set_policy: Added
gnutls_x509_policy_release: Added
gnutls_pubkey_import_x509_crq: Added
gnutls_pubkey_print: Added
GNUTLS_CRT_PRINT_FULL_NUMBERS: Added


* Version 3.1.4 (released 2012-11-10)

** libgnutls: gnutls_certificate_verify_peers2() will set flags depending on
the available revocation data validity.

** libgnutls: Added gnutls_certificate_verification_status_print(),
a function to print the verification status code in human readable text.

** libgnutls: Added priority string %VERIFY_DISABLE_CRL_CHECKS.

** libgnutls: Simplified certificate verification by adding
gnutls_certificate_verify_peers3().

** libgnutls: Added support for extension to establish keys for SRTP.
Contributed by Martin Storsjo.

** libgnutls: The X.509 verification functions check the key
usage bits and pathlen constraints and on failure output
GNUTLS_CERT_SIGNER_CONSTRAINTS_FAILURE.

** libgnutls: gnutls_x509_crl_verify() includes the time checks.

** libgnutls: Added verification flag GNUTLS_VERIFY_DO_NOT_ALLOW_UNSORTED_CHAIN
and made GNUTLS_VERIFY_ALLOW_UNSORTED_CHAIN the default.

** libgnutls: Always tolerate key usage violation errors from the side
of the peer, but also notify via an audit message.

** gnutls-cli: Added --local-dns option.

** danetool: Corrected bug that prevented loading PEM files.

** danetool: Added --check option to allow querying and verifying
a site's DANE data.

** libgnutls-dane: Added pkg-config file for the library.

** API and ABI modifications:
gnutls_session_get_id2: Added
gnutls_sign_is_secure: Added
gnutls_certificate_verify_peers3: Added
gnutls_ocsp_status_request_is_checked: Added
gnutls_certificate_verification_status_print: Added
gnutls_srtp_set_profile: Added
gnutls_srtp_set_profile_direct: Added
gnutls_srtp_get_selected_profile: Added
gnutls_srtp_get_profile_name: Added
gnutls_srtp_get_profile_id: Added
gnutls_srtp_get_keys: Added
gnutls_srtp_get_mki: Added
gnutls_srtp_set_mki: Added
gnutls_srtp_profile_t: Added
dane_cert_type_name: Added
dane_match_type_name: Added
dane_cert_usage_name: Added
dane_verification_status_print: Added
GNUTLS_CERT_REVOCATION_DATA_SUPERSEDED: Added
GNUTLS_CERT_REVOCATION_DATA_ISSUED_IN_FUTURE: Added
GNUTLS_CERT_SIGNER_CONSTRAINTS_FAILURE: Added
GNUTLS_CERT_UNEXPECTED_OWNER: Added
GNUTLS_VERIFY_DO_NOT_ALLOW_UNSORTED_CHAIN: Added


* Version 3.1.3 (released 2012-10-12)

** libgnutls: Added support for the OCSP Certificate Status
extension.

** libgnutls: gnutls_certificate_verify_peers2() will use the OCSP
certificate status extension in verification.

** libgnutls: Bug fixes in gnutls_x509_privkey_import_openssl().

** libgnutls: Increased maximum password length in the PKCS #12
functions.

** libgnutls: Fixed the receipt of session tickets during session resumption.
Reported by danblack at https://savannah.gnu.org/support/?108146

** libgnutls: Added functions to export structures in an allocated buffer.

** libgnutls: Added gnutls_ocsp_resp_check_crt() to check whether the OCSP
response corresponds to the given certificate.

** libgnutls: In client side gnutls_init() enables the session ticket and
OCSP certificate status request extensions by default. The flag
GNUTLS_NO_EXTENSIONS can be used to prevent that.

** libgnutls: Several updates in the OpenPGP code. The generating code
is fully RFC6091 compliant and RFC5081 support is only supported in client
mode.

** libgnutls-dane: Added. It is a library to provide DANE with DNSSEC
certificate verification.

** gnutls-cli: Added --dane option to enable DANE certificate verification.

** danetool: Added tool to generate DANE TLSA Resource Records (RR).

** API and ABI modifications:
gnutls_certificate_get_peers_subkey_id: Added
gnutls_certificate_set_ocsp_status_request_function: Added
gnutls_certificate_set_ocsp_status_request_file: Added
gnutls_ocsp_status_request_enable_client: Added
gnutls_ocsp_status_request_get: Added
gnutls_ocsp_resp_check_crt: Added
gnutls_dh_params_export2_pkcs3: Added
gnutls_pubkey_export2: Added
gnutls_x509_crt_export2: Added
gnutls_x509_dn_export2: Added
gnutls_x509_crl_export2: Added
gnutls_pkcs7_export2: Added
gnutls_x509_privkey_export2: Added
gnutls_x509_privkey_export2_pkcs8: Added
gnutls_x509_crq_export2: Added
gnutls_openpgp_crt_export2: Added
gnutls_openpgp_privkey_export2: Added
gnutls_pkcs11_obj_export2: Added
gnutls_pkcs12_export2: Added
gnutls_pubkey_import_openpgp_raw: Added
gnutls_pubkey_import_x509_raw: Added
dane_state_init: Added
dane_state_deinit: Added
dane_query_tlsa: Added
dane_query_status: Added
dane_query_entries: Added
dane_query_data: Added
dane_query_deinit: Added
dane_verify_session_crt: Added
dane_verify_crt: Added
dane_strerror: Added


* Version 3.1.2 (released 2012-09-26)

** libgnutls: Fixed bug in gnutls_x509_trust_list_add_system_trust()
and gnutls_x509_trust_list_add_trust_mem() that prevented the loading
of certificates in the windows platform.

** libgnutls: Corrected bug in OpenPGP subpacket encoding.

** libgnutls: Added support for DTLS/TLS heartbeats by Olga Smolenchuk.
(the work was done during Google Summer of Code).

** libgnutls: Added X.509 certificate verification flag
GNUTLS_VERIFY_ALLOW_UNSORTED_CHAIN. This flag allows the verification
of unsorted certificate chains and is enabled by default for
TLS certificate verification (if gnutls_certificate_set_verify_flags()
does not override it).

** libgnutls: Prints warning on certificates that contain keys of
an insecure level. If the %COMPAT priority flag is not specified
the TLS connection fails.

** libgnutls: Correctly restore gnutls_record_recv() in DTLS mode
if interrupted during the retrasmition of handshake data.

** libgnutls: Better mingw32 support (patch by LRN).

** libgnutls: The %COMPAT keyword, if specified, will tolerate
key usage violation errors (they are far too common to ignore).

** libgnutls: Added GNUTLS_STATELESS_COMPRESSION flag to gnutls_init(),
which provides a tool to counter compression-related attacks where
parts of the data are controlled by the attacker _and_ are placed in
separate records (use with care - do not use compression if not sure).

** libgnutls: Depends on libtasn1 2.14 or later.

** certtool: Prints the number of bits of the public key algorithm
parameter in a private key.

** API and ABI modifications:
gnutls_x509_privkey_get_pk_algorithm2: Added
gnutls_heartbeat_ping: Added
gnutls_heartbeat_pong: Added
gnutls_heartbeat_allowed: Added
gnutls_heartbeat_enable: Added
gnutls_heartbeat_set_timeouts: Added
gnutls_heartbeat_get_timeout: Added
GNUTLS_SEC_PARAM_WEAK: Added
GNUTLS_SEC_PARAM_INSECURE: Added

* Version 3.1.1 (released 2012-09-02)

** gnutls-serv: Listens on IPv6. Patch by Bernhard R. Link.

** certtool: Changes in password handling of certtool.
Ask password when required and only if the '--password' option is not
given. If the '--password' option is given during key generation then
assume the PKCS #8 file format, instead of ignoring the password.

** tpmtool: No longer asks for key password in registered keys.

** libgnutls: Elliptic curve code was optimized by Ilya Tumaykin.
wmNAF is now used for point multiplication and other optimizations.
(the major part of the work was done during Google Summer of Code).

** libgnutls: The default pull_timeout_function only uses select
instead of a combination of select() and recv() to prevent issues
when used in stream sockets in some systems.

** libgnutls: Be tolerant in ECDSA signature violations (e.g. using
SHA256 with a SECP384 curve instead of SHA-384), to interoperate with
openssl.

** libgnutls: Fixed DSA and ECDSA signature generation in smart
cards. Thanks to Andreas Schwier from cardcontact.de for providing
me with ECDSA capable smart cards.

** API and ABI modifications:
gnutls_sign_algorithm_get: Added
gnutls_sign_get_hash_algorithm: Added
gnutls_sign_get_pk_algorithm: Added


* Version 3.1.0 (released 2012-08-15)

** libgnutls: Added direct support for TPM as a cryptographic module
in gnutls/tpm.h. TPM keys can be used in functions accepting files
using URLs of the following types:
  tpmkey:file=/path/to/file
  tpmkey:uuid=7f468c16-cb7f-11e1-824d-b3a4f4b20343;storage=user

** libgnutls: Priority string level keywords can be combined.
For example the string "SECURE256:+SUITEB128" is now allowed.

** libgnutls: requires libnettle 2.5.

** libgnutls: Use the PKCS #1 1.5 encoding provided by nettle (2.5)
for encryption and signatures.

** libgnutls: Added GNUTLS_CERT_SIGNATURE_FAILURE to differentiate between
generic errors and signature verification errors in the verification
functions.

** libgnutls: Added gnutls_pkcs12_simple_parse() as a helper function
to simplify parsing in most PKCS #12 use cases.

** libgnutls: gnutls_certificate_set_x509_simple_pkcs12_file() adds
the whole certificate chain (if any) to the credentials structure, instead
of only the end-user certificate.

** libgnutls: Key import functions such as gnutls_pkcs12_simple_parse()
and gnutls_x509_privkey_import_pkcs8(), return consistently
GNUTLS_E_DECRYPTION_FAILED if the input structure is encrypted but no
password was provided.

** libgnutls: Added gnutls_handshake_set_timeout() a function that
allows to set the maximum time spent in a handshake.

** libgnutlsxx: Added session::set_transport_vec_push_function. Patch
by Alexandre Bique.

** tpmtool: Added. It is a tool to generate private keys in the
TPM.

** gnutls-cli: --benchmark-tls was split to --benchmark-tls-kx
and --benchmark-tls-ciphers

** certtool: generated PKCS #12 structures may hold more than one
private key. Patch by Lucas Fisher.

** certtool: Added option --null-password to generate/decrypt keys
that use a NULL password (in schemas that distinguish between NULL
an empty passwords).

** minitasn1: Upgraded to libtasn1 version 2.13.

** API and ABI modifications:
GNUTLS_CERT_SIGNATURE_FAILURE: Added
GNUTLS_CAMELLIA_192_CBC: Added
GNUTLS_PKCS_NULL_PASSWORD: Added
gnutls_url_is_supported: Added
gnutls_pkcs11_obj_list_import_url2: Added
gnutls_pkcs11_obj_set_pin_function: Added
gnutls_pkcs11_privkey_set_pin_function: Added
gnutls_pkcs11_get_pin_function: Added
gnutls_privkey_import_tpm_raw: Added
gnutls_privkey_import_tpm_url: Added
gnutls_privkey_import_pkcs11_url: Added
gnutls_privkey_import_openpgp_raw: Added
gnutls_privkey_import_x509_raw: Added
gnutls_privkey_import_ext2: Added
gnutls_privkey_import_url: Added
gnutls_privkey_set_pin_function: Added
gnutls_tpm_privkey_generate: Added
gnutls_tpm_key_list_deinit: Added
gnutls_tpm_key_list_get_url: Added
gnutls_tpm_get_registered: Added
gnutls_tpm_privkey_delete: Added
gnutls_pubkey_import_tpm_raw: Added
gnutls_pubkey_import_tpm_url: Added
gnutls_pubkey_import_url: Added
gnutls_pubkey_verify_hash2: Added
gnutls_pubkey_set_pin_function: Added
gnutls_x509_privkey_import2: Added
gnutls_x509_privkey_import_openssl: Added
gnutls_x509_crt_set_pin_function: Added
gnutls_load_file: Added
gnutls_pkcs12_simple_parse: Added
gnutls_certificate_set_x509_system_trust: Added
gnutls_certificate_set_pin_function: Added
gnutls_x509_trust_list_add_system_trust: Added
gnutls_x509_trust_list_add_trust_file: Added
gnutls_x509_trust_list_add_trust_mem: Added
gnutls_pk_to_sign: Added
gnutls_handshake_set_timeout: Added
gnutls_pubkey_verify_hash: Deprecated (use gnutls_pubkey_verify_hash2)
gnutls_pubkey_verify_data: Deprecated (use gnutls_pubkey_verify_data2)


* Version 3.0.22 (released 2012-08-04)

** libgnutls: gnutls_certificate_set_x509_system_trust()
is now supported on OpenBSD.

** libgnutls: When verifying a certificate chain make sure it is chain.
If the chain is wrongly interrupted at some point then truncate it,
and only try to verify the correct part. Patch by David Woodhouse

** libgnutls: Restored the behavior of gnutls_x509_privkey_import_pkcs8()
which now may (again) accept a NULL password.

** certtool: Allow the user to choose the hash algorithm
when signing certificate request or certificate revocation list.
Patch by Petr Písař.

** API and ABI modifications:
No changes since last version.


* Version 3.0.21 (released 2012-07-02)

** libgnutls: fixed bug in gnutls_x509_privkey_import()
that prevented the loading of EC private keys when DER
encoded. Reported by David Woodhouse.

** libgnutls: In DTLS larger to mtu records result to
GNUTLS_E_LARGE_PACKET instead of being truncated.

** libgnutls: gnutls_dtls_get_data_mtu() is more precise. Based
on patch by David Woodhouse.

** libgnutls: Fixed memory leak in PKCS #8 key import.

** libgnutls: Added support for an old version of the DTLS protocol
used by openconnect vpn client for compatibility with Cisco's AnyConnect
SSL VPN. It is marked as GNUTLS_DTLS0_9. Do not use it for newer protocols
as it has issues.

** libgnutls: Corrected bug that prevented resolving PKCS #11 URLs
if only the label is specified. Patch by David Woodhouse.

** libgnutls: When EMSGSIZE errno is seen then GNUTLS_E_LARGE_PACKET
is returned.

** API and ABI modifications:
gnutls_dtls_set_data_mtu: Added
gnutls_session_set_premaster: Added


* Version 3.0.20 (released 2012-06-05)

** libgnutls: Corrected bug which prevented the parsing of
handshake packets spanning multiple records.

** libgnutls: Check key identifiers when checking for an issuer.

** libgnutls: Added gnutls_pubkey_verify_hash2()

** libgnutls: Added gnutls_certificate_set_x509_system_trust()
that loads the trusted CA certificates from system locations
(e.g. trusted storage in windows and CA bundle files in other systems).

** certtool: Added support for the URI subject alternative
name type in certtool.

** certtool: Increase to 128 the maximum number of distinct options
(e.g. dns_names) allowed.

** gnutls-cli: If --print-cert is given, print the certificate,
even on verification failure.

** API and ABI modifications:
gnutls_pk_to_sign: Added
gnutls_pubkey_verify_hash2: Added
gnutls_certificate_set_x509_system_trust: Added


* Version 3.0.19 (released 2012-04-22)

** libgnutls: When decoding a PKCS #11 URL the pin-source field
is assumed to be a file that stores the pin. Based on patch
by David Smith.

** libgnutls: gnutls_record_check_pending() no longer
returns unprocessed data, and thus ensure the non-blocking
of the next call to gnutls_record_recv().

** libgnutls: Added strict tests in Diffie-Hellman and
SRP key exchange public keys.

** libgnutls: in ECDSA and DSA TLS 1.2 authentication be less
strict in hash selection, and allow a stronger hash to
be used than the appropriate, to improve interoperability
with openssl.

** tests: Disabled floating point test, and corrections
in pkcs12 decoding tests.

** API and ABI modifications:
No changes since last version.


* Version 3.0.18 (released 2012-04-02)

** certtool: Avoid a Y2K38 bug when generating certificates.
Patch by Robert Millan.

** libgnutls: Make sure that GNUTLS_E_PREMATURE_TERMINATION
is returned on premature termination (and added unit test).

** libgnutls: Fixes for W64 API. Patch by B. Scott Michel.

** libgnutls: Corrected VIA padlock detection for old
VIA processors. Reported by Kris Karas.

** libgnutls: Updated assembler files.

** libgnutls: Time in generated certificates is stored
as GeneralizedTime instead of UTCTime (which only stores
2 digits of a year).

** minitasn1: Upgraded to libtasn1 version 2.13 (pre-release).

** API and ABI modifications:
gnutls_x509_crt_set_private_key_usage_period: Added
gnutls_x509_crt_get_private_key_usage_period: Added
gnutls_x509_crq_set_private_key_usage_period: Added
gnutls_x509_crq_get_private_key_usage_period: Added
gnutls_session_get_random: Added


* Version 3.0.17 (released 2012-03-17)

** command line apps: Always link with local libopts.

** API and ABI modifications:
No changes since last version.


* Version 3.0.16 (released 2012-03-16)

** minitasn1: Upgraded to libtasn1 version 2.12 (pre-release).

** libgnutls: Corrected SRP-RSA ciphersuites when used under TLS 1.2.

** libgnutls: included assembler files for MacOSX.

** p11tool: Small fixes in handling of the --private command
line option.

** certtool: The template option allows for setting the domain
component (DC) option of the distinguished name, and the ocsp_uri
as well as the ca_issuers_uri options.

** API and ABI modifications:
gnutls_x509_crt_set_authority_info_access: Added


* Version 3.0.15 (released 2012-03-02)

** test suite: Only run under valgrind in the development
system (the full git repository)

** command line apps: Link with local libopts if the
installed is an old one.

** libgnutls: Eliminate double free during SRP
authentication. Reported by Peter Penzov.

** libgnutls: Corrections in record packet parsing.
Reported by Matthew Hall.

** libgnutls: Cryptodev updates and fixes.

** libgnutls: Corrected issue with select() that affected
FreeBSD. This prevented establishing DTLS sessions.
Reported by Andreas Metzler.

** libgnutls: Corrected rehandshake and resumption
operations in DTLS. Reported by Sean Buckheister.

** libgnutls: PKCS #11 objects that do not have ID
no longer crash listing. Reported by Sven Geggus.

** API and ABI modifications:
No changes since last version.


* Version 3.0.14 (released 2012-02-24)

** command line apps: Included libopts doesn't get installed
by default.

** libgnutls: Eliminate double free on wrongly formatted
certificate list. Reported by Remi Gacogne.

** libgnutls: cryptodev code corrected, updated to account
for hashes and GCM mode.

** libgnutls: Eliminated memory leak in PCKS #11 initialization.
Report and fix by Sam Varshavchik.

** API and ABI modifications:
No changes since last version.


* Version 3.0.13 (released 2012-02-18)

** gnutls-cli: added the --ocsp option which will verify
the peer's certificate with OCSP.

** gnutls-cli: added the --tofu option and if specified, gnutls-cli
will use an ssh-style authentication method.

** gnutls-cli: if no --x509cafile is provided a default is
assumed (/etc/ssl/certs/ca-certificates.crt), if it exists.

** ocsptool: Added --ask parameter, to verify a certificate's
status from an ocsp server.

** command line apps: Use gnu autogen (libopts) to parse command
line arguments and template files.

** tests: Added stress test for DTLS packet losses and
out-of-order receival. Contributed by Sean Buckheister.

** libgnutls: Several updates and corrections in the DTLS
DTLS lost packet handling and retransmission timeouts.
Report and patches by Sean Buckheister.

** libgnutls: Added new functions to easily allow the usage of
a trust on first use (SSH-style) authentication.

** libgnutls: SUITEB128 and SUITEB192 priority strings account
for the RFC6460 requirements.

** libgnutls: Added new security parameter GNUTLS_SEC_PARAM_LEGACY
to account for security level of 96-bits.

** libgnutls: In client side if server does not advertise any
known CAs and only a single certificate is set in the credentials,
sent that one.

** libgnutls: Added functions to parse authority key identifiers
when stored as a 'general name' and serial combo.

** libgnutls: Added function to force explicit reinitialization
of PKCS #11 modules. This is required on the child process after
a fork (if PKCS #11 functionality is desirable).

** libgnutls: Depend on p11-kit 0.11.

** API and ABI modifications:
gnutls_dtls_get_timeout: Added
gnutls_verify_stored_pubkey: Added
gnutls_store_pubkey: Added
gnutls_store_commitment: Added
gnutls_x509_crt_get_authority_key_gn_serial: Added
gnutls_x509_crl_get_authority_key_gn_serial: Added
gnutls_pkcs11_reinit: Added
gnutls_ecc_curve_list: Added
gnutls_priority_certificate_type_list: Added
gnutls_priority_sign_list: Added
gnutls_priority_protocol_list: Added
gnutls_priority_compression_list: Added
gnutls_priority_ecc_curve_list: Added
gnutls_tdb_init: Added
gnutls_tdb_set_store_func: Added
gnutls_tdb_set_store_commitment_func: Added
gnutls_tdb_set_verify_func: Added
gnutls_tdb_deinit: Added


* Version 3.0.12 (released 2012-01-20)

** libgnutls: Added OCSP support.
There is a new header file gnutls/ocsp.h and a set of new functions
under the gnutls_ocsp namespace.  Currently the functionality provided
is to parse and extract information from OCSP requests/responses, to
generate OCSP requests and to verify OCSP responses.  See the manual
for more information.  Run ./configure with --disable-ocsp to build
GnuTLS without OCSP support.

This work was sponsored by Smoothwall <https://smoothwall.net/>.

** ocsptool: Added new command line tool.
The tool can parse OCSP request/responses, generate OCSP requests and
verify OCSP responses.  See the manual for more information.

** certtool: --outder option now works for private
and public keys as well.

** libgnutls: Added error code GNUTLS_E_NO_PRIORITIES_WERE_SET
to warn when no or insufficient priorities were set.

** libgnutls: Corrected an alignment issue in ECDH
key generation which prevented some keys from being
correctly aligned in rare circumstances.

** libgnutls: Corrected memory leaks in DH parameter
generation and ecc_projective_check_point().

** libgnutls: Added gnutls_x509_dn_oid_name() to
return a descriptive name of a DN OID.

** API and ABI modifications:
gnutls_pubkey_encrypt_data: Added
gnutls_x509_dn_oid_name: Added
gnutls_session_resumption_requested: Added
gnutls/ocsp.h: Added new header file.
gnutls_ocsp_print_formats_t: Added new type.
gnutls_ocsp_resp_status_t: Added new type.
gnutls_ocsp_cert_status_t: Added new type.
gnutls_x509_crl_reason_t: Added new type.
gnutls_ocsp_req_add_cert: Added.
gnutls_ocsp_req_add_cert_id: Added.
gnutls_ocsp_req_deinit: Added.
gnutls_ocsp_req_export: Added.
gnutls_ocsp_req_get_cert_id: Added.
gnutls_ocsp_req_get_extension: Added.
gnutls_ocsp_req_get_nonce: Added.
gnutls_ocsp_req_get_version: Added.
gnutls_ocsp_req_import: Added.
gnutls_ocsp_req_init: Added.
gnutls_ocsp_req_print: Added.
gnutls_ocsp_req_randomize_nonce: Added.
gnutls_ocsp_req_set_extension: Added.
gnutls_ocsp_req_set_nonce: Added.
gnutls_ocsp_resp_deinit: Added.
gnutls_ocsp_resp_export: Added.
gnutls_ocsp_resp_get_certs: Added.
gnutls_ocsp_resp_get_extension: Added.
gnutls_ocsp_resp_get_nonce: Added.
gnutls_ocsp_resp_get_produced: Added.
gnutls_ocsp_resp_get_responder: Added.
gnutls_ocsp_resp_get_response: Added.
gnutls_ocsp_resp_get_signature: Added.
gnutls_ocsp_resp_get_signature_algorithm: Added.
gnutls_ocsp_resp_get_single: Added.
gnutls_ocsp_resp_get_status: Added.
gnutls_ocsp_resp_get_version: Added.
gnutls_ocsp_resp_import: Added.
gnutls_ocsp_resp_init: Added.
gnutls_ocsp_resp_print: Added.
gnutls_ocsp_resp_verify: Added.

* Version 3.0.11 (released 2012-01-06)

** libgnutls: Corrected functionality of
gnutls_record_get_direction(). Reported by Philip Allison.

** libgnutls: Provide less timing information when decoding
TLS/DTLS record packets. Patch by Nadhem Alfardan.

** API and ABI modifications:
No changes since last version.


* Version 3.0.10 (released 2012-01-04)

** gnutls-cli/serv: Set don't fragment bit in DTLS sessions
in Linux as well as in BSD.

** gnutls-cli: Fixed reading from windows terminals.

** libgnutls: When GNUTLS_OPENPGP_FMT_BASE64 is specified
the stream is assumed to be base64 encoded (previously
the encoding was auto-detected). This avoids a decoding
issue in windows systems.

** libgnutls: Corrected ciphersuite GNUTLS_ECDHE_PSK_AES_256_CBC_SHA384

** libgnutls: Added ciphersuites: GNUTLS_PSK_WITH_AES_256_GCM_SHA384
and GNUTLS_DHE_PSK_WITH_AES_256_GCM_SHA384.

** libgnutls: Added function gnutls_random_art() to convert
fingerprints to images (currently ascii-art).

** libgnutls: Corrected bug in DSA private key parsing, which
prevented the verification of the key.

** API and ABI modifications:
gnutls_random_art: Added


* Version 3.0.9 (released 2011-12-13)

** certtool: Added new parameter --dh-info.

** certtool: -l option was overloaded so if combined with --priority
it will only list the ciphersuites that are enabled by the given
priority string.

** libgnutls: Added new priority string %SERVER_PRECEDENCE, which
changes the ciphersuite selection procedure. If specified the server
priorities will be used for selection instead of the client's.

** libgnutls: Optimizations in Diffie-Hellman parameters generation
and key exchange.

** libgnutls: When session tickets are negotiated and used in a
session, a server will not store that session data into its cache.

** libgnutls: Added the SECP192R1 curve.

** libgnutls: Added gnutls_priority_get_cipher_suite_index() to
allow listing the ciphersuites enabled in a priority structure.
It outputs an index to be used in gnutls_get_cipher_suite_info().

** libgnutls: Optimizations in the elliptic curve code --timing
attacks resistant code is only used in ECDSA private key operations.

** doc: man pages for API functions generation was fixed and are
now added again in the distribution.

** API and ABI modifications:
GNUTLS_ECC_CURVE_SECP192R1: New curve definition
gnutls_priority_get_cipher_suite_index: Added


* Version 3.0.8 (released 2011-11-12)

** certtool: Certtool -e returns error code on verification
failure.

** certtool: Verifies parameters of generated keys.

** libgnutls: Corrected ECC key generation (introduced in 3.0.6)

** libgnutls: Provide less timing information when decoding
TLS/DTLS record packets.

** doc: man pages for API functions were removed.
The reason was that the code that auto-generated the man pages missed
many APIs and we couldn't fix it (volunteers welcome).  See the info
manual or the GTK-DOC manual instead.

** API and ABI modifications:
gnutls_x509_privkey_verify_params: Added


* Version 3.0.7 (released 2011-11-08)

** libgnutls: Corrected fix in gnutls_session_get_data()
to report the actual session size when the provided buffer
is not enough.

** libgnutls: Fixed ciphersuite GNUTLS_ECDHE_RSA_AES_128_CBC_SHA256,
which was using a wrong MAC algorithm. Reported by Fabrice Gautier.

** API and ABI modifications:
No changes since last version.


* Version 3.0.6 (released 2011-11-07)

** gnutls-guile: Compilation fixes.

** libgnutls: Fixed possible buffer overflow in
gnutls_session_get_data(). Reported and fix by Alban Crequy.

** libgnutls: Bug fixes in the ciphersuites with NULL cipher.
Reported by Fabrice Gautier.

** libgnutls: Bug fixes in ECC code for 64-bit MIPS systems.
Thanks to Joseph Graham for providing access to such a system.

** libgnutls: Correctly report ECC private key parsing errors.
Reported by Fabrice Gautier.

** libgnutls: In ECDHE verify that the received point lies on
the selected curve. The ECDHE ciphersuites now take precedence
to plain DHE.

** API and ABI modifications:
No changes since last version.


* Version 3.0.5 (released 2011-10-27)

** libgnutls-extra: is no more

** libgnutls: Corrections in order to compile with mingw32.

** libgnutls: Corrections in VIA padlock code for VIA C5 processor
and new detection of PHE with support for partial hashing.

** libgnutls: Corrected bug in gnutls_x509_data2hex. Report and fix
by Vincent Untz.

** minitasn1: Upgraded to libtasn1 version 2.10.

** API and ABI modifications:
No changes since last version.


* Version 3.0.4 (released 2011-10-15)

** libgnutls-extra: gnutls_register_md5_handler() was
removed.

** gnutls-cli-debug: Added more tests including AES-GCM,
SHA256 and elliptic curves.

** gnutls-cli: Added --benchmark-soft-ciphers to benchmark
the software version of the ciphers instead of hw accelerated
(where available)

** libgnutls: Public key ID calculation is consistent among
all structures. It uses a SHA-1 hash of the subjectPublicKeyInfo.

** libgnutls: gnutls_privkey_t allows setting external callback
to perform signing or decryption. Can be set using
gnutls_privkey_import_ext()

** libgnutls: A certificate credentials structure can be
used with a gnutls_privkey_t and a gnutls_pcert_st
structure using gnutls_certificate_set_key().

** libgnutls: Fixes to enable external signing callback to
operate with TLS 1.2.

** libgnutls: Fixed crash when printing ECDSA certificate key
ID. Reported by Erik Jensen.

** libgnutls: Corrected VIA padlock code for C3. In C3 benchmarks
show a 50x increase in AES speed and a 14x increase in VIA nano. Added
support for hashes and HMACs.

** libgnutls: Compilation fixed when p11-kit is not detected.

** libgnutls: Fixed the deflate compression code.

** libgnutls: Added gnutls_x509_crt_get_authority_info_access.
Used to get the PKIX Authority Information Access (AIA) field.

** libgnutls: gnutls_x509_crt_print supports printing AIA fields.

** libgnutls: Added ability to gnutls_privkey_t to operate with
signing callback function.

** API and ABI modifications:
gnutls_x509_crt_get_authority_info_access (x509.h): Added function.
gnutls_privkey_import_ext: Added function.
gnutls_certificate_set_key: Added function.
gnutls_info_access_what_t (x509.h): Added enum.
GNUTLS_OID_AIA (x509.h): Added symbol.
GNUTLS_OID_AD_OCSP (x509.h): Added symbol.
GNUTLS_OID_AD_CAISSUERS (x509.h): Added symbol.

* Version 3.0.3 (released 2011-09-18)

** libgnutls: Added gnutls_record_get_discarded() to return the
number of discarded records in a DTLS session.

** libgnutls: All functions related to RSA-EXPORT were deprecated.
Support for RSA-EXPORT ciphersuites will be ceased in future versions.

** libgnutls: Memory leak fixes in credentials private key
deinitialization. Reported by Dan Winship.

** libgnutls: Memory leak fixes in ECC ciphersuites.

** libgnutls: Do not send an empty extension structure in server
hello. This affected old implementations that do not support extensions.
Reported by J. Cameijo Cerdeira.

** libgnutls: Allow CA importing of 0 certificates to succeed.
Reported by Jonathan Nieder <jrnieder@gmail.com> in
<https://bugs.debian.org/640639>.

** libgnutls: Added support for VIA padlock AES optimizations.
(disabled by default)

** libgnutls: Added support for elliptic curves in
PKCS #11.

** libgnutls: Added gnutls_pkcs11_privkey_generate()
to allow generating a key in a token.

** p11tool: Added generate-rsa, generate-dsa and
generate-ecc options to allow generating private
keys in the token.

** libgnutls: gnutls_transport_set_lowat dummy macro was
removed.

** API and ABI modifications:
gnutls_pkcs11_privkey_generate: Added
gnutls_pubkey_import_ecc_raw: Added
gnutls_pubkey_import_ecc_x962: Added
gnutls_pubkey_get_pk_ecc_x962: Added
gnutls_record_get_discarded: Added


* Version 3.0.2 (released 2011-09-01)

** libgnutls: OpenPGP certificate type is not enabled
by default.

** libgnutls: Added %NO_EXTENSIONS priority string.

** libgnutls: Corrected issue in gnutls_record_recv()
triggered on encryption or compression error.

** libgnutls: Compatibility fixes in CPU ID detection
for i386 and old GCC.

** gnutls-cli: Benchmark applications were incorporated
with it.

** libgnutls: Corrected parsing of XMPP subject
alternative names.

** libgnutls: Allow for out-of-order ChangeCipherSpec
message in DTLS.

** libgnutls: gnutls_certificate_set_x509_key() and
gnutls_certificate_set_openpgp_key() operate as in 2.10.x
and allow the release of the private key during the
lifetime of the certificate structure.

** API and ABI modifications:
GNUTLS_PRIVKEY_IMPORT_COPY: new gnutls_privkey_import() flag


* Version 3.0.1 (released 2011-08-20)

** libgnutls: gnutls_certificate_set_x509_key_file() and
friends support server name indication. If multiple
certificates are set using these functions the proper one
will be selected during a handshake.

** libgnutls: Added AES-256-GCM which was left out from
the previous release. Reported by Benjamin Hof.

** libgnutls: When asking for a PKCS# 11 PIN multiple
times, the flags in the callback were not being updated
to reflect for PIN low count or final try.

** libgnutls: Do not allow second instances of PKCS #11
modules.

** libgnutls: fixed alignment issue in AES-NI code.

** libgnutls: The config file at gnutls_pkcs11_init()
is being read if provided.

** libgnutls: Ensure that a certificate list specified
using gnutls_certificate_set_x509_key() and friends, is
sorted according to TLS specification (from subject to issuer).

** libgnutls: Added GNUTLS_X509_CRT_LIST_FAIL_IF_UNSORTED flag for
gnutls_x509_crt_list_import. It checks whether the list to be
imported is properly sorted.

** crywrap: Added to the distribution. It is an application
that proxies TLS session to a port using a plaintext service.

** doc: Many GTK-DOC improvements.

** i18n: Translations were updated.

** API and ABI modifications:
GNUTLS_X509_CRT_LIST_FAIL_IF_UNSORTED: New element in gnutls_certificate_import_flags
GNUTLS_PKCS11_PIN_WRONG: New flag for PIN callback


* Version 3.0.0 (released 2011-07-29)

** libgnutls: writev_emu: stop on the first incomplete write. Patch by
Sjoerd Simons.

** libgnutls: Fix zlib handling in gnutls.pc. Patch by Andreas
Metzler.

** certtool: bug fixes in certificate request generation. Patch
by Petr Písař.

** API and ABI modifications:
gnutls_pcert_list_import_x509_raw: ADDED


* Version 2.99.4 (released 2011-07-23)

** doc: documentation updates.

** libgnutls: gnutls_rsa_params_t is now identical to gnutls_x509_privkey_t
to avoid thread-safety issues. Reported by Sam Varshavchik.

** libgnutls: Added compatibility mode with /etc/gnutls/pkcs11.conf

** libgnutls: license upgraded to LGPLv3

** libgnutls: gnutls_srp_verifier() returns data allocated with gnutls_malloc()
for consistency.

** API and ABI modifications:
No changes since last version.


* Version 2.99.3 (released 2011-06-18)

** libgnutls: Added new PKCS #11 flags to force an object being private or
not. (GNUTLS_PKCS11_OBJ_FLAG_MARK_PRIVATE and GNUTLS_PKCS11_OBJ_FLAG_MARK_NOT_PRIVATE)

** libgnutls: Added SUITEB128 and SUITEB192 priority
strings to enable the NSA SuiteB cryptography ciphersuites.

** libgnutls: Added gnutls_pubkey_verify_data2() that will
verify data provided the signature algorithm.

** libgnutls: Simplified the handling of handshake messages to
be hashed. Instead of hashing during the handshake process we now
keep the data until handshake is over and hash them on request.
This uses more memory but eliminates issues with TLS 1.2 and
simplifies code.

** libgnutls: Added AES-GCM optimizations using the PCLMULQDQ
instruction. Uses Andy Polyakov's assembly code.

** libgnutls: Added gnutls_x509_trust_list_add_named_crt() and
gnutls_x509_trust_list_verify_named_crt() that allow having a
list of certificates in the trusted list that will be associated
with a name (e.g. server name) and will not be used as CAs.

** libgnutls: PKCS #11 back-end rewritten to use p11-kit
https://p11-glue.freedesktop.org/p11-kit.html. Rewrite by
Stef Walter.

** libgnutls: Added ECDHE-PSK ciphersuites for TLS (RFC 5489).

** API and ABI modifications:
gnutls_pubkey_verify_data2: ADDED
gnutls_ecc_curve_get: ADDED
gnutls_x509_trust_list_add_named_crt: ADDED
gnutls_x509_trust_list_verify_named_crt: ADDED
gnutls_x509_privkey_verify_data: REMOVED
gnutls_crypto_bigint_register: REMOVED
gnutls_crypto_cipher_register: REMOVED
gnutls_crypto_digest_register: REMOVED
gnutls_crypto_mac_register: REMOVED
gnutls_crypto_pk_register: REMOVED
gnutls_crypto_rnd_register: REMOVED
gnutls_crypto_single_cipher_register: REMOVED
gnutls_crypto_single_digest_register: REMOVED
gnutls_crypto_single_mac_register: REMOVED
GNUTLS_KX_ECDHE_PSK: New key exchange method
GNUTLS_VERIFY_DISABLE_CRL_CHECKS: New certificate verification flag.
GNUTLS_PKCS11_OBJ_FLAG_MARK_PRIVATE: New PKCS#11 object flag.
GNUTLS_PKCS11_OBJ_FLAG_MARK_NOT_PRIVATE: New PKCS#11 object flag.


* Version 2.99.2 (released 2011-05-26)

** libgnutls: Added Elliptic curve support. This is not
enabled by default. Requires priority strings:
+CURVE-ALL: to add all supported curves
+ECDHE-RSA: to add ephemeral ECDHE with an RSA-signed certificate
+ECDHE-ECDSA: to add ephemeral ECDHE with an ECDSA-signed certificate
+ANON-ECDHE: to add anonymous ECDH

** libgnutls: PKCS #11 URLs conform to the latest draft
being https://tools.ietf.org/html/draft-pechanec-pkcs11uri-04.

** certtool: Can now load private keys and public keys from PKCS #11 tokens
via URLs.

** libgnutls: Added gnutls_global_set_audit_log_function() that allows
to get important auditing information including the corresponding session.
That might be useful to block DoS or other attacker from specific IPs.

** libgnutls: gnutls_pkcs11_privkey_import_url() will now correctly read
the public key algorithm of the key.

** libgnutls: Added gnutls_certificate_get_issuer() and
gnutls_x509_trust_list_get_issuer() to compensate for the
missing gnutls_certificate_get_x509_cas().

** libgnutls: Added gnutls_x509_crq_verify() to allow
verification of the self signature in a certificate request.
This allows verifying whether the owner of the private key
is the generator of the request.

** libgnutls: gnutls_x509_crt_set_crq() implicitly verifies
the self signature of the request.

** API and ABI modifications:
gnutls_certificate_get_issuer: ADDED
gnutls_x509_trust_list_get_issuer: ADDED
gnutls_x509_crq_verify: ADDED
gnutls_global_set_audit_log_function: ADDED
gnutls_ecc_curve_get_name: ADDED
gnutls_ecc_curve_get_size: ADDED
gnutls_x509_privkey_import_ecc_raw: ADDED
gnutls_x509_privkey_export_ecc_raw: ADDED
gnutls_global_set_time_function: ADDED

GNUTLS_E_ECC_NO_SUPPORTED_CURVES: New error code
GNUTLS_E_ECC_UNSUPPORTED_CURVE: New error code
GNUTLS_KX_ECDHE_RSA: New key exchange method
GNUTLS_KX_ECDHE_ECDSA: New key exchange method
GNUTLS_KX_ANON_ECDH: New key exchange method
GNUTLS_PK_ECC: New public key algorithm
GNUTLS_SIGN_ECDSA_SHA1: New signature algorithm
GNUTLS_SIGN_ECDSA_SHA256: New signature algorithm
GNUTLS_SIGN_ECDSA_SHA384: New signature algorithm
GNUTLS_SIGN_ECDSA_SHA512: New signature algorithm
GNUTLS_SIGN_ECDSA_SHA224: New signature algorithm
GNUTLS_ECC_CURVE_INVALID: New curve definition
GNUTLS_ECC_CURVE_SECP224R1: New curve definition
GNUTLS_ECC_CURVE_SECP256R1: New curve definition
GNUTLS_ECC_CURVE_SECP384R1: New curve definition
GNUTLS_ECC_CURVE_SECP521R1: New curve definition


* Version 2.99.1 (released 2011-04-23)

** libgnutls: LZO support was removed.

** libgnutls: Corrections in SSLv2 client hello parsing.

** libgnutls: Added support for AES-NI if detected. Uses
Andy Polyakov's AES-NI code.

** libgnutls: Restored HMAC-MD5 for compatibility. Although considered
weak, several sites require it for connection. It is enabled for
"NORMAL" and "PERFORMANCE" priority strings.

** libgnutls: depend on libdl.

** libgnutls-extra: Dropped support of LZO compression via liblzo.

** libgnutls: gnutls_transport_set_global_errno() was removed. This
function required GnuTLS to access system specific data, for no reason.
Use gnutls_transport_set_errno(), or your system's errno fascility
instead.

** libgnutls: Added gnutls_certificate_set_retrieve_function2()
to set a callback to retrieve a certificate. The certificate is
received in a format that requires no processing from gnutls thus
it is suitable when performance is required.

** API and ABI modifications:
gnutls_transport_set_global_errno: REMOVED
gnutls_certificate_set_retrieve_function2: ADDED

* Version 2.99.0 (released 2011-04-09)

** libgnutls: Added Datagram TLS support.

** libgnutls: Uses a single configure file and a single
gnulib library to save space.

** libgnutls: Several bug fixes.

** libgnutls: gnutls_transport_set_lowat() is no more.

** libgnutls-openssl: modified to use modern gnutls' functions.
This introduces an ABI incompatibility with previous versions.

** libgnutls: Corrected signature generation and verification
in the Certificate Verify message when in TLS 1.2. Reported
by Todd A. Ouska.

** libgnutlsxx: The C++ interface returns exception on
every error and not only on fatal ones. This allows easier
handling of errors.

** libgnutls: Corrected issue in DHE-PSK ciphersuites that ignored
the PSK callback.

** libgnutls: SRP and PSK are no longer set on the default priorities.
They have to be explicitly set.

** libgnutls: During handshake message verification using DSS
use the hash algorithm required by it.

** libgnutls: gnutls_recv() return GNUTLS_E_PREMATURE_TERMINATION
on unexpected EOF, instead of GNUTLS_E_UNEXPECTED_PACKET_LENGTH.

** libgnutls: Added GCM mode (interoperates with tls.secg.org)

** libgnutls-extra: Inner application extension was removed.
It was never standardized nor published as an RFC.

** libgnutls: Added new certificate verification functions, that
can provide more details and are more efficient. Check
gnutls_x509_trust_list_*.

** certtool: Uses the new certificate verification functions for
--verify-chain.

** certtool: Added new certificate verification functionality
using the --verify option. Combined with --load-ca-certificate
it can verify a certificate chain against a list of certificates.

** Several files unnecessarily included <gcrypt.h>; this has been fixed.

** API and ABI modifications:
gnutls_dtls_set_timeouts: ADDED
gnutls_dtls_get_mtu: ADDED
gnutls_dtls_get_data_mtu: ADDED
gnutls_dtls_set_mtu: ADDED
gnutls_dtls_cookie_send: ADDED
gnutls_dtls_cookie_verify: ADDED
gnutls_dtls_prestate_set: ADDED
gnutls_x509_trust_list_verify_crt: ADDED
gnutls_x509_trust_list_add_crls: ADDED
gnutls_x509_trust_list_add_cas: ADDED
gnutls_x509_trust_list_init: ADDED
gnutls_x509_trust_list_deinit: ADDED
gnutls_cipher_add_auth: ADDED
gnutls_cipher_tag: ADDED
gnutls_psk_netconf_derive_key: REMOVED
gnutls_certificate_verify_peers: REMOVED
gnutls_session_set_finished_function: REMOVED
gnutls_ext_register: REMOVED
gnutls_certificate_get_x509_crls: REMOVED
gnutls_certificate_get_x509_cas: REMOVED
gnutls_certificate_get_openpgp_keyring: REMOVED
gnutls_session_get_server_random: REMOVED
gnutls_session_get_client_random: REMOVED
gnutls_session_get_master_secret: REMOVED
gnutls_ia_allocate_client_credentials: REMOVED
gnutls_ia_allocate_server_credentials: REMOVED
gnutls_ia_enable: REMOVED
gnutls_ia_endphase_send: REMOVED
gnutls_ia_extract_inner_secret: REMOVED
gnutls_ia_free_client_credentials: REMOVED
gnutls_ia_free_server_credentials: REMOVED
gnutls_ia_generate_challenge: REMOVED
gnutls_ia_get_client_avp_ptr: REMOVED
gnutls_ia_get_server_avp_ptr: REMOVED
gnutls_ia_handshake: REMOVED
gnutls_ia_handshake_p: REMOVED
gnutls_ia_permute_inner_secret: REMOVED
gnutls_ia_recv: REMOVED
gnutls_ia_send: REMOVED
gnutls_ia_set_client_avp_function: REMOVED
gnutls_ia_set_client_avp_ptr: REMOVED
gnutls_ia_set_server_avp_function: REMOVED
gnutls_ia_set_server_avp_ptr: REMOVED
gnutls_ia_verify_endphase: REMOVED


* Version 2.12.2 (released 2011-04-08)

** libgnutls: Several updates and fixes for win32. Patches by LRN.

** libgnutls: Several bug and memory leak fixes.

** srptool: Accepts the -d option to enable debugging.

** libgnutls: Corrected bug in gnutls_srp_verifier() that prevented
the allocation of a verifier. Reported by Andrew Wiseman.

** API and ABI modifications:
No changes since last version.


* Version 2.12.1 (released 2011-04-02)

** certtool: Generated certificate request with stricter permissions.
Reported by Luca Capello.

** libgnutls: Bug fixes in opencdk code. Reported by Vitaly Kruglikov.

** libgnutls: Corrected windows system_errno() function prototype.

** libgnutls: C++ compatibility fix for compat.h. Reported by Mark Brand.

** libgnutls: Fix size of gnutls_openpgp_keyid_t by using the
GNUTLS_OPENPGP_KEYID_SIZE definition. Reported by Andreas Metzler.

** API and ABI modifications:
No changes since last version.




* Version 2.12.0 (released 2011-03-24)

** certtool: Warns on generation of DSA keys of over 1024 bits, about
the incompatibility with TLS other than 1.2.

** libgnutls: Modified signature algorithm selection in client
certificate request, to avoid failures in DSA certificates.

** libgnutls: Instead of failing with internal error, return
GNUTLS_E_INCOMPAT_DSA_KEY_WITH_TLS_PROTOCOL if an incompatible DSA
key with the negotiated protocol is encountered.

** libgnutls: Bug fixes in the RSA ciphersuite behavior with openpgp keys.

** libgnutls: Force state update when fork is detected in the nettle
rng.

** libgnutls: modified gnutls_pubkey_import_openpgp() to use the preferred
subkey instead of setting explicitly one.

** libgnutls: Corrected default behavior in record version of Client Hellos.

** libgnutls-openssl: modified to use modern gnutls' functions.
This introduces an ABI incompatibility with previous versions.

** API and ABI modifications:
gnutls_pubkey_import_openpgp: MODIFIED


* Version 2.11.7

** libgnutls: The deprecated  gnutls_x509_privkey_sign_hash() was
replaced by gnutls_privkey_sign_hash2().

** libgnutls: gnutls_pubkey_verify_data, gnutls_pubkey_verify_hash,
gnutls_x509_privkey_verify_data, gnutls_x509_crt_verify_data,
gnutls_x509_crt_verify_hash return the negative error code
GNUTLS_E_PK_SIG_VERIFY_FAILED if verification fails to simplify error
checking.

** libgnutls: Added helper functions for signature verification:
gnutls_pubkey_verify_data() and gnutls_pubkey_import_privkey().

** libgnutls: Modified gnutls_privkey_sign_data().

** gnutls_x509_crl_privkey_sign2(), gnutls_x509_crq_sign2()
gnutls_x509_privkey_sign_hash(), gnutls_x509_privkey_sign_data(),
gnutls_x509_crt_verify_hash(), gnutls_x509_crt_verify_data(), were
deprecated for gnutls_x509_crl_privkey_sign(),
gnutls_x509_crq_privkey_sign(), gnutls_privkey_sign_hash(),
gnutls_privkey_sign_data(), gnutls_pubkey_verify_hash()
gnutls_pubkey_verify_data() respectively.

** libgnutls: gnutls_*_export_raw() functions now add leading zero in
integers.

** libgnutls: Added convenience functions gnutls_x509_crl_list_import2()
and gnutls_x509_crt_list_import2().

** crypto.h: Fix use with C++.
Reported by "Brendan Doherty" <brendand@gentrack.com>.

** API and ABI modifications:
gnutls_x509_crl_list_import: ADDED
gnutls_x509_crl_list_import2: ADDED
gnutls_x509_crt_list_import2: ADDED
gnutls_x509_crl_get_raw_issuer_dn: ADDED
gnutls_pubkey_import_privkey: ADDED
gnutls_pubkey_verify_data: ADDED
gnutls_privkey_sign_hash: MODIFIED (was added in 2.11.0)
gnutls_privkey_sign_data: MODIFIED (was added in 2.11.0)
gnutls_x509_crq_sign2: DEPRECATED (use: gnutls_x509_crq_privkey_sign)
gnutls_x509_crq_sign: DEPRECATED (use: gnutls_x509_crq_privkey_sign)
gnutls_x509_crq_get_preferred_hash_algorithm: REMOVED (was added in 2.11.0)
gnutls_x509_crl_sign: DEPRECATED (use: gnutls_x509_crl_privkey_sign)
gnutls_x509_crl_sign2: DEPRECATED (use: gnutls_x509_crl_privkey_sign)
gnutls_x509_privkey_sign_data: DEPRECATED (use: gnutls_privkey_sign_data2)
gnutls_x509_privkey_sign_hash: DEPRECATED (use: gnutls_privkey_sign_hash2)
gnutls_x509_privkey_verify_data: DEPRECATED (use: gnutls_pubkey_verify_data)
gnutls_session_set_finished_function: DEPRECATED
gnutls_x509_crt_verify_hash: DEPRECATED (use: gnutls_pubkey_verify_hash)
gnutls_x509_crt_verify_data: DEPRECATED (use: gnutls_pubkey_verify_data)
gnutls_x509_crt_get_verify_algorithm: DEPRECATED (use: gnutls_pubkey_get_verify_algorithm)
gnutls_x509_crt_get_preferred_hash_algorithm: DEPRECATED (use: gnutls_pubkey_get_preferred_hash_algorithm)
gnutls_openpgp_privkey_sign_hash: DEPRECATED (use: gnutls_privkey_sign_hash2)
gnutls_pkcs11_privkey_sign_hash: REMOVED (was added in 2.11.0)
gnutls_pkcs11_privkey_decrypt_data: REMOVED (was added in 2.11.0)
gnutls_privkey_sign_hash: REMOVED (was added in 2.11.0)

* Version 2.11.6 (released 2010-12-06)

** libgnutls: Record version of Client Hellos is now set by default to
SSL 3.0. To restore the previous default behavior use %LATEST_RECORD_VERSION
priority string.

** libgnutls: Use ASN1_NULL when writing parameters for RSA signatures.
This makes us comply with RFC3279. Reported by Michael Rommel.

** gnutls-serv: Corrected a buffer overflow. Reported and patch by Tomas Mraz.

** API and ABI modifications:
No changes since last version.

* Version 2.11.5 (released 2010-12-01)

** libgnutls: Reverted default behavior for verification and
introduced GNUTLS_VERIFY_DO_NOT_ALLOW_X509_V1_CA_CRT. Thus by default
V1 trusted CAs are allowed, unless the new flag is specified.

** libgnutls: Correctly add leading zero to PKCS #8 encoded DSA key.
Reported by Jeffrey Walton.

** libgnutls: Added SIGN-ALL, CTYPE-ALL, COMP-ALL, and VERS-TLS-ALL
as priority strings. Those allow to set all the supported algorithms
at once.

** p11tool: Introduced. It allows manipulating pkcs 11 tokens.

** gnutls-cli: Print channel binding only in verbose mode.
Before it printed it after the 'Compression:' output, thus breaking
Emacs starttls.el string searches.

** API and ABI modifications:
gnutls_pkcs11_token_init: New function
gnutls_pkcs11_token_set_pin: New function

* Version 2.11.4 (released 2010-10-15)

** libgnutls: Add new API gnutls_session_channel_binding.
The function is used to get the channel binding data.  Currently only
the "tls-unique" (RFC 5929) channel binding type is supported, through
the GNUTLS_CB_TLS_UNIQUE type.  See new section "Channel Bindings" in
the manual.

** gnutls-cli, gnutls-serv: Print 'tls-unique' Channel Bindings.

** doc: Added pkcs11.h header file to GTK-DOC manual.

** build: Update gnulib files.

** i18n: Update translations.

** tests: Add self tests gendh.c.  Speed up Guile self checks.

** API and ABI modifications:
gnutls_session_channel_binding: New function.
gnutls_channel_binding_t: New enumeration.
GNUTLS_CB_TLS_UNIQUE: New gnutls_channel_binding_t enum member.
GNUTLS_E_CHANNEL_BINDING_NOT_AVAILABLE: New error code.

* Version 2.11.3 (released 2010-10-14)

** Indent code to follow the GNU Coding Standard.
You should be able to unpack the 2.11.2 release and run 'make indent'
twice to get exactly the same content as 2.11.3 except for generated
files.  Using GNU Indent 2.2.11.

** API and ABI modifications:
No changes since last version.

* Version 2.11.2 (released 2010-10-08)

** libgnutls: Several bug fixes on session resumption
and session tickets support.

** libgnutls: Add new extended key usage ipsecIKE.

** certtool: Renamed PKCS #11 options to: --p11-provider,
--p11-export-url, --p11-list-certs, --p11-list-certs,
--p11-list-privkeys, --p11-list-trusted, --p11-list-all-certs,
--p11-list-all, --p11-list-tokens, --p11-login, --p11-write,
--p11-write-label, --p11-write-trusted, --p11-detailed-url,
--p11-delete-url

** libgnutls: Corrected bug that caused importing DSA keys as RSA,
introduced with the new nettle code.

** libgnutls: Corrected advertizing issue for session tickets.

** API and ABI modifications:
gnutls_x509_crt_get_subject_unique_id: ADDED.
gnutls_x509_crt_get_issuer_unique_id: ADDED.

* Version 2.11.1 (released 2010-09-14)

** libgnutls: Nettle is the default crypto back end. Use --with-libgcrypt
to use the libgcrypt back end.

** libgnutls: Depend on nettle 2.1. This makes nettle a fully working
backend crypto library.

** libgnutls: Added RSA_NULL_SHA1 and SHA256 ciphersuites.

** libgnutls: Several updates in the buffering internal interface.

** libgnutls: Is now more liberal in the PEM decoding. That is spaces and
tabs are being skipped.

** libgnutls: Added support for draft-pechanec-pkcs11uri-02.

** libgnutls: The %COMPAT flag now allows larger records that violate the
TLS spec.

** libgnutls: by default lowat level has been set to zero to avoid unnecessary
system calls. Applications that depended on it being 1 should explicitly call
gnutls_transport_set_lowat().

** libgnutls: Updated documentation and gnutls_pk_params_t mappings
to ECRYPT II recommendations. Mappings were moved to a single location
and DSA keys are handled differently (since DSA2 allows for 1024,2048
and 3072 keys only).

** libgnutls: gnutls_x509_privkey_import() will fallback to
gnutls_x509_privkey_import_pkcs8() without a password, if it
is unable to decode the key.

** libgnutls: HMAC-MD5 no longer used by default.

** API and ABI modifications:
gnutls_openpgp_privkey_sec_param: ADDED
gnutls_x509_privkey_sec_param: ADDED

* Version 2.11.0 (released 2010-07-22)

** libgnutls: support scattered write using writev(). This takes
advantage of the new buffering layer and allows queuing of packets
and flushing them. This is currently used for handshake messages
only.

** libgnutls: Added gnutls_global_set_mutex() to allow setting
alternative locking procedures. By default the system available
locking is used. In *NIX pthreads are used and in windows the
critical section API. This follows a different approach than the
previous versions that depended on libgcrypt initialization. The
locks are now set by default in systems that support it. Programs
that used gcry_control() to set thread locks should insert it into
a block of
#if GNUTLS_VERSION_NUMBER <= 0x020b00
	gcry_control(...)
#endif

** libgnutls: Added support for reading DN from EV-certificates.
New DN values:
jurisdictionOfIncorporationLocalityName,
jurisdictionOfIncorporationStateOrProvinceName,
jurisdictionOfIncorporationCountryName

** libgnutls: Added support for DSA signing/verifying with bit
length over 1024.

** libgnutls-extra: When in FIPS mode gnutls_global_init_extra()
has to be called to register any required md5 handlers.

** libgnutls: Internal buffering code was replaced by simpler
code contributed by Jonathan Bastien-Filiatrault.

** libgnutls: Internal API for extensions augmented to allow
safe storing and loading of data on resumption. This allows writing
self-contained extensions (when possible). As a side effect
the OPRFI extension was removed.

** libgnutls: Added support for DSA-SHA256 and DSA-SHA224

** libgnutls: Added PKCS #11 support and an API to access objects in
gnutls/pkcs11.h. Currently certificates and public keys can be
imported from tokens, and operations can be performed on private keys.

** libgnutls: Added abstract gnutls_privkey_t and gnutls_pubkey_t

** libgnutls: Added initial support for the nettle library. It uses
the system's random generator for seeding. That is /dev/urandom in Linux,
system calls in Win32 and EGD on other systems.

** libgnutls: Corrected issue on the %SSL3_RECORD_VERSION priority string. It now
    works even when resuming a session.

** libgnutls: Added gnutls_certificate_set_retrieve_function() to replace the
similar gnutls_certificate_set_server_retrieve_function() and
gnutls_certificate_set_client_retrieve_function(). In addition it support
PKCS #11 private keys.

** libgnutls: Added  gnutls_pkcs11_copy_x509_crt(), gnutls_pkcs11_copy_x509_privkey(),
and gnutls_pkcs11_delete_url() to allow copying and deleting data in tokens.

** libgnutls: Added gnutls_sec_param_to_pk_bits() et al. to allow select bit
sizes for private keys using a human understandable scale.

** certtool: Added new options: --pkcs11-list-tokens, --pkcs11-list-all
--pkcs11-list-all-certs, --pkcs11-list-trusted, --pkcs11-list-certs,
--pkcs11-delete-url, --pkcs11-write

certtool: The --pkcs-cipher is taken into account when generating a
private key. The default cipher used now is aes-128. The old behavior can
be simulated by specifying "--pkcs-cipher 3des-pkcs12".

certtool: Added --certificate-pubkey to print the public key of the
certificate.

** gnutls-cli/gnutls-serv: --x509cafile, --x509certfile and --x509keyfile
can now accept a PKCS #11 URL in addition to a file. This will allow for
example to use the Gnome-keyring trusted certificate list to verify
connections using a url such as:
pkcs11:token=Root%20CA%20Certificates;serial=1%3AROOTS%3ADEFAULT;model=1%2E0;manufacturer=Gnome%20Keyring

** API and ABI modifications:
gnutls_certificate_set_server_retrieve_function: DEPRECATED
gnutls_certificate_set_client_retrieve_function: DEPRECATED
gnutls_sign_callback_set: DEPRECATED
gnutls_global_set_mutex: ADDED
gnutls_pubkey_get_preferred_hash_algorithm: ADDED
gnutls_x509_crt_get_preferred_hash_algorithm: ADDED
gnutls_x509_privkey_export_rsa_raw2: ADDED
gnutls_rnd: ADDED
gnutls_sec_param_to_pk_bits: ADDED
gnutls_pk_bits_to_sec_param: ADDED
gnutls_sec_param_get_name: ADDED
gnutls_pkcs11_type_get_name: ADDED
gnutls_certificate_set_retrieve_function: ADDED
gnutls_pkcs11_init: ADDED
gnutls_pkcs11_deinit: ADDED
gnutls_pkcs11_set_pin_function: ADDED
gnutls_pkcs11_set_token_function: ADDED
gnutls_pkcs11_add_provider: ADDED
gnutls_pkcs11_obj_init: ADDED
gnutls_pkcs11_obj_import_url: ADDED
gnutls_pkcs11_obj_export_url: ADDED
gnutls_pkcs11_obj_deinit: ADDED
gnutls_pkcs11_obj_export: ADDED
gnutls_pkcs11_obj_list_import_url: ADDED
gnutls_pkcs11_obj_export: ADDED
gnutls_x509_crt_import_pkcs11: ADDED
gnutls_pkcs11_obj_get_type: ADDED
gnutls_x509_crt_list_import_pkcs11: ADDED
gnutls_x509_crt_import_pkcs11_url: ADDED
gnutls_pkcs11_obj_get_info: ADDED
gnutls_pkcs11_token_get_info: ADDED
gnutls_pkcs11_token_get_url: ADDED
gnutls_pkcs11_privkey_init: ADDED
gnutls_pkcs11_privkey_deinit: ADDED
gnutls_pkcs11_privkey_get_pk_algorithm: ADDED
gnutls_pkcs11_privkey_get_info: ADDED
gnutls_pkcs11_privkey_import_url: ADDED
gnutls_pkcs11_privkey_sign_data: ADDED
gnutls_pkcs11_privkey_sign_hash: ADDED
gnutls_pkcs11_privkey_decrypt_data: ADDED
gnutls_privkey_init: ADDED
gnutls_privkey_deinit: ADDED
gnutls_privkey_get_pk_algorithm: ADDED
gnutls_privkey_get_type: ADDED
gnutls_privkey_import_pkcs11: ADDED
gnutls_privkey_import_x509: ADDED
gnutls_privkey_import_openpgp: ADDED
gnutls_privkey_sign_data: ADDED
gnutls_privkey_sign_hash: ADDED
gnutls_privkey_decrypt_data: ADDED
gnutls_pkcs11_privkey_export_url: ADDED
gnutls_x509_crq_privkey_sign: ADDED
gnutls_x509_crl_privkey_sign: ADDED
gnutls_x509_crt_privkey_sign: ADDED
gnutls_pubkey_init: ADDED
gnutls_pubkey_deinit: ADDED
gnutls_pubkey_get_pk_algorithm: ADDED
gnutls_pubkey_import_x509: ADDED
gnutls_pubkey_import_openpgp: ADDED
gnutls_pubkey_get_pk_rsa_raw: ADDED
gnutls_pubkey_get_pk_dsa_raw: ADDED
gnutls_pubkey_export: ADDED
gnutls_pubkey_get_key_id: ADDED
gnutls_pubkey_get_key_usage: ADDED
gnutls_pubkey_verify_hash: ADDED
gnutls_pubkey_get_verify_algorithm: ADDED
gnutls_pkcs11_type_get_name: ADDED
gnutls_pubkey_import_pkcs11_url: ADDED
gnutls_pubkey_import: ADDED
gnutls_pubkey_import_pkcs11: ADDED
gnutls_pubkey_import_dsa_raw: ADDED
gnutls_pubkey_import_rsa_raw: ADDED
gnutls_x509_crt_set_pubkey: ADDED
gnutls_x509_crq_set_pubkey: ADDED
gnutls_pkcs11_copy_x509_crt: ADDED
gnutls_pkcs11_copy_x509_privkey: ADDED
gnutls_pkcs11_delete_url: ADDED

* Version 2.10.1 (released 2010-07-25)

** libgnutls: Added support for broken certificates that indicate RSA
with strange OIDs.

** gnutls-cli: Allow verification using V1 CAs.

** libgnutls: gnutls_x509_privkey_import() will fallback to
gnutls_x509_privkey_import_pkcs8() without a password, if it
is unable to decode the key.

** libgnutls: Correctly deinitialize crypto API functions to prevent
a memory leak.  Reported by Mads Kiilerich.

** certtool: If asked to generate DSA keys of size more than 1024 bits,
issue a warning, that the output key might not be working everywhere.

** certtool: The --pkcs-cipher is taken into account when generating a
private key. The default cipher used now is aes-128. The old behavior
can be simulated by specifying "--pkcs-cipher 3des-pkcs12".

** API and ABI modifications:
No changes since last version.

* Version 2.10.0 (released 2010-06-25)

** API and ABI modifications:
No changes since last version.

* Version 2.9.12 (released 2010-06-17)

** gnutls-cli: Make --starttls work again.
Problem introduced in patch to use read() instead of fgets() committed
on 2010-01-27.

** API and ABI modifications:
No changes since last version.

* Version 2.9.11 (released 2010-06-07)

** libgnutls: Removed two APIs related to safe renegotiation.
Use priority strings instead.  The APIs were
gnutls_safe_negotiation_set_initial and gnutls_safe_renegotiation_set.
(Remember that we don't promise ABI stability during development
series, so this doesn't cause an shared library ABI increment.)

** tests: More self testing of safe renegotiation extension.
See tests/safe-renegotiation/README for more information.

** doc: a PDF version of the API reference manual (GTK-DOC) is now built.

** doc: Terms 'GNUTLS' and 'GNU TLS' were changed to 'GnuTLS' for consistency.

** API and ABI modifications:
gnutls_safe_negotiation_set_initial: REMOVED.
gnutls_safe_renegotiation_set: REMOVED.

* Version 2.9.10 (released 2010-04-22)

** libgnutls: Time verification extended to trusted certificate list.
Unless new constant GNUTLS_VERIFY_DISABLE_TRUSTED_TIME_CHECKS flag is
specified.

** certtool: Display postalCode and Name X.509 DN attributes correctly.
Based on patch by Pavan Konjarla.  Adds new constant
GNUTLS_OID_X520_POSTALCODE and GNUTLS_OID_X520_NAME.

** libgnutls: Added Steve Dispensa's patch for safe renegotiation (RFC 5746)
Solves the issue discussed in:
<https://www.ietf.org/mail-archive/web/tls/current/msg03928.html> and
<https://www.ietf.org/mail-archive/web/tls/current/msg03948.html>.
Note that to allow connecting to unpatched servers the full protection
is only enabled if the priority string %SAFE_RENEGOTIATION is
specified. You can check whether protection is in place by querying
gnutls_safe_renegotiation_status().  New error codes
GNUTLS_E_SAFE_RENEGOTIATION_FAILED and
GNUTLS_E_UNSAFE_RENEGOTIATION_DENIED added.

** libgnutls: When checking openpgp self signature also check the signatures
** of all subkeys.
Ilari Liusvaara noticed and reported the issue and provided test
vectors as well.

** libgnutls: Added cryptodev support (/dev/crypto).
Tested with http://www.logix.cz/michal/devel/cryptodev/.  Added
benchmark utility for AES.  Adds new error codes
GNUTLS_E_CRYPTODEV_IOCTL_ERROR and GNUTLS_E_CRYPTODEV_DEVICE_ERROR.

** libgnutls: Exported API to access encryption and hash algorithms.
The new API functions are gnutls_cipher_decrypt, gnutls_cipher_deinit,
gnutls_cipher_encrypt, gnutls_cipher_get_block_size,
gnutls_cipher_init, gnutls_hash, gnutls_hash_deinit, gnutls_hash_fast,
gnutls_hash_get_len, gnutls_hash_init, gnutls_hash_output,
gnutls_hmac, gnutls_hmac_deinit, gnutls_hmac_fast,
gnutls_hmac_get_len, gnutls_hmac_init, gnutls_hmac_output.  New API
constants are GNUTLS_MAC_SHA224 and GNUTLS_DIG_SHA224.

** libgnutls: Added gnutls_certificate_set_verify_function() to allow
verification of certificate upon receipt rather than waiting until the
end of the handshake.

** libgnutls: Don't send alerts during handshake.
Instead new error code GNUTLS_E_UNKNOWN_SRP_USERNAME is added.

** certtool: Corrected two issues that affected certificate request generation.
(1) Null padding is added on integers (found thanks to Wilankar Trupti),
(2) In optional SignatureAlgorithm parameters field for DSA keys the DSA
parameters were added. Those were rejected by Verisign. Gnutls no longer adds
those parameters there since other implementations don't do either and having
them does not seem to offer anything (anyway you need the signer's certificate
to verify thus public key will be available). Found thanks to Boyan Kasarov.
This however has the side-effect that public key IDs shown by certtool are
now different than previous gnutls releases.
(3) the option --pgp-certificate-info will verify self signatures

** certtool: Allow exporting of Certificate requests on DER format.

** certtool: New option --no-crq-extensions to avoid extensions in CSRs.

** gnutls-cli: Handle reading binary data from server.
Reported by and tiny patch from Vitaly Mayatskikh
<v.mayatskih@gmail.com> in
<http://thread.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/4096>.

** minitasn1: Upgraded to libtasn1 version 2.6.

** i18n: Updated Czech, Dutch, French, Polish, Swedish translation.
** Added Italian and Simplified Chinese translation.
Thanks to Petr Pisar, Erwin Poeze, Nicolas Provost, Jakub Bogusz,
Daniel Nylander, Sergio Zanchetta, Tao Wei, and Aron Xu.

** doc: The GTK-DOC manual is significantly improved.

** API and ABI modifications:
%DISABLE_SAFE_RENEGOTIATION: Added to priority strings (do not use).
%INITIAL_SAFE_RENEGOTIATION: Added to priority strings.
%UNSAFE_RENEGOTIATION: Added to priority strings.
GNUTLS_DIG_SHA224: ADDED.
GNUTLS_E_CRYPTODEV_DEVICE_ERROR: ADDED.
GNUTLS_E_CRYPTODEV_IOCTL_ERROR: ADDED.
GNUTLS_E_SAFE_RENEGOTIATION_FAILED: ADDED.
GNUTLS_E_UNKNOWN_SRP_USERNAME: ADDED.
GNUTLS_E_UNSAFE_RENEGOTIATION_DENIED: ADDED.
GNUTLS_MAC_SHA224: ADDED.
GNUTLS_OID_X520_NAME: ADDED.
GNUTLS_OID_X520_POSTALCODE: ADDED.
GNUTLS_VERIFY_DISABLE_TRUSTED_TIME_CHECKS: ADDED.
GNUTLS_VERSION_MAX: ADDED.
gnutls_certificate_set_verify_function: ADDED.
gnutls_cipher_decrypt: ADDED.
gnutls_cipher_deinit: ADDED.
gnutls_cipher_encrypt: ADDED.
gnutls_cipher_get_block_size: ADDED.
gnutls_cipher_init: ADDED.
gnutls_hash: ADDED.
gnutls_hash_deinit: ADDED.
gnutls_hash_fast: ADDED.
gnutls_hash_get_len: ADDED.
gnutls_hash_init: ADDED.
gnutls_hash_output: ADDED.
gnutls_hmac: ADDED.
gnutls_hmac_deinit: ADDED.
gnutls_hmac_fast: ADDED.
gnutls_hmac_get_len: ADDED.
gnutls_hmac_init: ADDED.
gnutls_hmac_output: ADDED.
gnutls_safe_negotiation_set_initial: ADDED.
gnutls_safe_renegotiation_set: ADDED.
gnutls_safe_renegotiation_status: ADDED.

* Version 2.9.9 (released 2009-11-09)

** libgnutls: Cleanups and several bug fixes.
Found by Steve Grubb and Tomas Mraz.

** Link libgcrypt explicitly to certtool, gnutls-cli, gnutls-serv.

** Fix --disable-valgrind-tests.
Reported by Ingmar Vanhassel in
<https://savannah.gnu.org/support/?107029>.

** API and ABI modifications:
No changes since last version.

* Version 2.9.8 (released 2009-11-05)

** libgnutls: Fix for memory leaks on interrupted handshake.
Reported by Tang Tong.

** libgnutls: Addition of support for TLS 1.2 signature algorithms
** extension and certificate verify field.
This requires changes for TLS 1.2 servers and clients that use
callbacks for certificate retrieval.  They are now required to check
with gnutls_sign_algorithm_get_requested() whether the certificate
they send complies with the peer's preferences in signature
algorithms.

** libgnutls: In server side when resuming a session do not overwrite the
** initial session data with the resumed session data.

** libgnutls: Added support for AES-128, AES-192 and AES-256 in PKCS #8
** encryption.
This affects also PKCS #12 encoded files.  This adds the following new
enums: GNUTLS_CIPHER_AES_192_CBC, GNUTLS_PKCS_USE_PBES2_AES_128,
GNUTLS_PKCS_USE_PBES2_AES_192, GNUTLS_PKCS_USE_PBES2_AES_256.

** libgnutls: Fix PKCS#12 encoding.
The error you would get was "The OID is not supported.".  Problem
introduced for the v2.8.x branch in 2.7.6.

** certtool: Added the --pkcs-cipher option.
To explicitly specify the encryption algorithm to use.

** tests: Added "pkcs12_encode" self-test to check PKCS#12 functions.

** tests: Fix time bomb in chainverify self-test.
Reported by Andreas Metzler <ametzler@downhill.at.eu.org> in
<http://thread.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3925>.

** tests: Fix expired cert in chainverify self-test.

** i18n: Vietnamese translation updated.
Thanks to Clytie Siddall.

** API and ABI modifications:
GNUTLS_CIPHER_AES_192_CBC: ADDED to gnutls/gnutls.h.
GNUTLS_PKCS_USE_PBES2_AES_128: ADDED to gnutls/x509.h.
GNUTLS_PKCS_USE_PBES2_AES_192: ADDED to gnutls/x509.h.
GNUTLS_PKCS_USE_PBES2_AES_256: ADDED to gnutls/x509.h.
GNUTLS_BAG_SECRET: ADDED to gnutls/pkcs12.h.
GNUTLS_DIG_UNKNOWN: ADDED to gnutls/gnutls.h.
gnutls_sign_algorithm_get_requested: ADDED.

* Version 2.9.7 (released 2009-10-06)

** libgnutls: TLS 1.2 server mode fixes.
Now interoperates against Opera.  Contributed by Daiki Ueno.

** libgnutlsxx: Fix link problems.
Tiny patch from Boyan Kasarov <bkasarov@gmail.com>.

** guile: Compatibility with guile 2.x.
By Ludovic Courtes <ludovic.courtes@laas.fr>.

** API and ABI modifications:
No changes since last version.

* Version 2.9.6 (released 2009-09-22)

** libgnutls: Enable Camellia ciphers by default.

** API and ABI modifications:
No changes since last version.

* Version 2.9.5 (released 2009-09-10)

** libgnutls: Add new functions to extract X.509 Issuer Alternative Names.
The new functions are gnutls_x509_crt_get_issuer_alt_name2,
gnutls_x509_crt_get_issuer_alt_name, and
gnutls_x509_crt_get_issuer_alt_othername_oid.  Contributed by Brad
Hards <bradh@frogmouth.net>.

** API and ABI modifications:
gnutls_x509_crt_get_issuer_alt_name2: ADDED.
gnutls_x509_crt_get_issuer_alt_name: ADDED.
gnutls_x509_crt_get_issuer_alt_othername_oid: ADDED.

* Version 2.9.4 (released 2009-09-03)

** libgnutls: Client-side TLS 1.2 and SHA-256 ciphersuites now works.
The new supported ciphersuites are AES-128/256 in CBC mode with
ANON-DH/RSA/DHE-DSS/DHE-RSA.  Contributed by Daiki Ueno.  Further,
SHA-256 is now the preferred default MAC (however it is only used with
TLS 1.2).

** libgnutls: Make OpenPGP hostname checking work again.
The patch to resolve the X.509 CN/SAN issue accidentally broken
OpenPGP hostname comparison.

** libgnutls: When printing X.509 certificates, handle XMPP SANs better.
Reported by Howard Chu <hyc@symas.com> in
<https://savannah.gnu.org/support/?106975>.

** Fix use of deprecated types internally.
Use of deprecated types in GnuTLS from now on will lead to a compile
error, to prevent this from happening again.

** API and ABI modifications:
No changes since last version.

* Version 2.9.3 (released 2009-08-19)

** libgnutls: Support for TLS tickets was contributed by Daiki Ueno.
The new APIs are gnutls_session_ticket_enable_client,
gnutls_session_ticket_enable_server, and
gnutls_session_ticket_key_generate.

** gnutls-cli, gnutls-serv: New parameter --noticket to disable TLS tickets.

** API and ABI modifications:
gnutls_session_ticket_key_generate: ADDED.
gnutls_session_ticket_enable_client: ADDED.
gnutls_session_ticket_enable_server: ADDED.

* Version 2.9.2 (released 2009-08-14)

** libgnutls: Fix problem with NUL bytes in X.509 CN and SAN fields.
By using a NUL byte in CN/SAN fields, it was possible to fool GnuTLS
into 1) not printing the entire CN/SAN field value when printing a
certificate and 2) cause incorrect positive matches when matching a
hostname against a certificate.  Some CAs apparently have poor
checking of CN/SAN values and issue these (arguable invalid)
certificates.  Combined, this can be used by attackers to become a
MITM on server-authenticated TLS sessions.  The problem is mitigated
since attackers needs to get one certificate per site they want to
attack, and the attacker reveals his tracks by applying for a
certificate at the CA.  It does not apply to client authenticated TLS
sessions.  Research presented independently by Dan Kaminsky and Moxie
Marlinspike at BlackHat09.  Thanks to Tomas Hoger <thoger@redhat.com>
for providing one part of the patch.  [GNUTLS-SA-2009-4] [CVE-2009-2730].

** libgnutls: Fix rare failure in gnutls_x509_crt_import.
The function may fail incorrectly when an earlier certificate was
imported to the same gnutls_x509_crt_t structure.

** minitasn1: Internal copy updated to libtasn1 v2.3.

** libgnutls: Fix return value of gnutls_certificate_client_get_request_status.
Before it always returned false.  Reported by Peter Hendrickson
<pdh@wiredyne.com> in
<http://thread.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3668>.

** libgnutls: Fix off-by-one size computation error in unknown DN printing.
The error resulted in truncated strings when printing unknown OIDs in
X.509 certificate DNs.  Reported by Tim Kosse
<tim.kosse@filezilla-project.org> in
<http://thread.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3651>.

** libgnutls: Fix PKCS#12 decryption from password.
The encryption key derived from the password was incorrect for (on
average) 1 in every 128 input for random inputs.  Reported by "Kukosa,
Tomas" <tomas.kukosa@siemens-enterprise.com> in
<http://permalink.gmane.org/gmane.network.gnutls.general/1663>.

** libgnutls: Return correct bit lengths of some MPIs.
gnutls_dh_get_prime_bits, gnutls_rsa_export_get_modulus_bits, and
gnutls_dh_get_peers_public_bits.  Before the reported value was
overestimated.  Reported by Peter Hendrickson <pdh@wiredyne.com> in
<http://thread.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3607>.

** libgnutls: Avoid internal error when invoked after GNUTLS_E_AGAIN.
Report and patch by Tim Kosse <tim.kosse@filezilla-project.org> in
<http://permalink.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3671>
and
<http://permalink.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3670>.

** libgnutls: Relax checking of required libtasn1/libgcrypt versions.
Before we required that the runtime library used the same (or more
recent) libgcrypt/libtasn1 as it was compiled with.  Now we just check
that the runtime usage is above the minimum required.  Reported by
Marco d'Itri <md@linux.it> via Andreas Metzler
<ametzler@downhill.at.eu.org> in <https://bugs.debian.org/540449>.

** tests: Added new self-test pkcs12_s2k_pem to detect MPI bit length error.

** tests: Improved test vectors in self-test pkcs12_s2k.

** tests: Added new self-test dn2 to detect off-by-one size error.

** tests: Fix failure in "chainverify" because a certificate have expired.

** API and ABI modifications:
No changes since last version.

* Version 2.9.1 (released 2009-06-08)

** libgnutls: Fix crash in gnutls_global_init after earlier init/deinit cycle.
Forwarded by Martin von Gagern <Martin.vGagern@gmx.net> from
<https://bugs.gentoo.org/272388>.

** tests: Added new self-tests init_roundtrip.c to detect previous problem.

** Reduce stack usage for some CRQ functions.

** Doc fixes for CRQ functions.

** API and ABI modifications:
No changes since last version.

* Version 2.9.0 (released 2009-05-28)

** Doc fixes.

** API and ABI modifications:
No changes since last version.

* Version 2.8.6 (released 2010-03-15)

** libgnutls: For CSRs, don't null pad integers for RSA/DSA value.
VeriSign rejected CSRs with this padding.  Reported by Wilankar Trupti
<trupti.wilankar@hp.com> and Boyan Kasarov <bkasarov@gmail.com>.

Note: As a side effect of this change, the "public key identifier"
value computed for a certificate using this version of GnuTLS will be
different from values computed using earlier versions of GnuTLS.

** libgnutls: For CSRs on DSA keys, don't add DSA parameters to the
** optional SignatureAlgorithm parameter field.
VeriSign rejected these CSRs.  They are strictly speaking not needed
since you need the signer's certificate to verify the certificate
signature anyway.  Reported by Wilankar Trupti
<trupti.wilankar@hp.com> and Boyan Kasarov <bkasarov@gmail.com>.

** libgnutls: When checking openpgp self signature also check the signatures
** of all subkeys.
Ilari Liusvaara noticed and reported the issue and provided test
vectors as well.

** libgnutls: Cleanups and several bug fixes.
Found by Steve Grubb and Tomas Mraz.

** Link libgcrypt explicitly to certtool, gnutls-cli, gnutls-serv.

** Fix --disable-valgrind-tests.
Reported by Ingmar Vanhassel in
<https://savannah.gnu.org/support/?107029>.

** examples: Use the new APIs for printing X.509 certificate information.

** Fix build failures on Solaris.
Thanks to Dagobert Michelsen <dam@opencsw.org>.

** i18n: Updated Czech, Dutch, French, Polish, Swedish and Vietnamese
** translations.  Added Simplified Chinese translation.

** API and ABI modifications:
No changes since last version.

* Version 2.8.5 (released 2009-11-02)

** libgnutls: In server side when resuming a session do not overwrite the
** initial session data with the resumed session data.

** libgnutls: Fix PKCS#12 encoding.
The error you would get was "The OID is not supported.".  Problem
introduced for the v2.8.x branch in 2.7.6.

** guile: Compatibility with guile 2.x.
By Ludovic Courtes <ludovic.courtes@laas.fr>.

** tests: Fix expired cert in chainverify self-test.

** tests: Fix time bomb in chainverify self-test.
Reported by Andreas Metzler <ametzler@downhill.at.eu.org> in
<http://thread.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3925>.

** API and ABI modifications:
No changes since last version.

* Version 2.8.4 (released 2009-09-18)

** libgnutls: Enable Camellia ciphers by default.

** libgnutls: Make OpenPGP hostname checking work again.
The patch to resolve the X.509 CN/SAN issue accidentally broken
OpenPGP hostname comparison.

** libgnutls: When printing X.509 certificates, handle XMPP SANs better.
Reported by Howard Chu <hyc@symas.com> in
<https://savannah.gnu.org/support/?106975>.

** API and ABI modifications:
No changes since last version.

* Version 2.8.3 (released 2009-08-13)

** libgnutls: Fix patch for NUL in CN/SAN in last release.
Code intended to be removed would lead to an read-out-bound error in
some situations.  Reported by Tomas Hoger <thoger@redhat.com>.  A CVE
code have been allocated for the vulnerability: [CVE-2009-2730].

** libgnutls: Fix rare failure in gnutls_x509_crt_import.
The function may fail incorrectly when an earlier certificate was
imported to the same gnutls_x509_crt_t structure.

** libgnutls-extra, libgnutls-openssl: Fix MinGW cross-compiling build error.

** tests: Made self-test mini-eagain take less time.

** doc: Typo fixes.

** API and ABI modifications:
No changes since last version.

* Version 2.8.2 (released 2009-08-10)

** libgnutls: Fix problem with NUL bytes in X.509 CN and SAN fields.
By using a NUL byte in CN/SAN fields, it was possible to fool GnuTLS
into 1) not printing the entire CN/SAN field value when printing a
certificate and 2) cause incorrect positive matches when matching a
hostname against a certificate.  Some CAs apparently have poor
checking of CN/SAN values and issue these (arguable invalid)
certificates.  Combined, this can be used by attackers to become a
MITM on server-authenticated TLS sessions.  The problem is mitigated
since attackers needs to get one certificate per site they want to
attack, and the attacker reveals his tracks by applying for a
certificate at the CA.  It does not apply to client authenticated TLS
sessions.  Research presented independently by Dan Kaminsky and Moxie
Marlinspike at BlackHat09.  Thanks to Tomas Hoger <thoger@redhat.com>
for providing one part of the patch.  [GNUTLS-SA-2009-4].

** libgnutls: Fix return value of gnutls_certificate_client_get_request_status.
Before it always returned false.  Reported by Peter Hendrickson
<pdh@wiredyne.com> in
<http://thread.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3668>.

** libgnutls: Fix off-by-one size computation error in unknown DN printing.
The error resulted in truncated strings when printing unknown OIDs in
X.509 certificate DNs.  Reported by Tim Kosse
<tim.kosse@filezilla-project.org> in
<http://thread.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3651>.

** libgnutls: Return correct bit lengths of some MPIs.
gnutls_dh_get_prime_bits, gnutls_rsa_export_get_modulus_bits, and
gnutls_dh_get_peers_public_bits.  Before the reported value was
overestimated.  Reported by Peter Hendrickson <pdh@wiredyne.com> in
<http://thread.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3607>.

** libgnutls: Avoid internal error when invoked after GNUTLS_E_AGAIN.
Report and patch by Tim Kosse <tim.kosse@filezilla-project.org> in
<http://permalink.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3671>
and
<http://permalink.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3670>.

** libgnutls: Relax checking of required libtasn1/libgcrypt versions.
Before we required that the runtime library used the same (or more
recent) libgcrypt/libtasn1 as it was compiled with.  Now we just check
that the runtime usage is above the minimum required.  Reported by
Marco d'Itri <md@linux.it> via Andreas Metzler
<ametzler@downhill.at.eu.org> in <https://bugs.debian.org/540449>.

** minitasn1: Internal copy updated to libtasn1 v2.3.

** tests: Fix failure in "chainverify" because a certificate have expired.

** API and ABI modifications:
No changes since last version.

* Version 2.8.1 (released 2009-06-10)

** libgnutls: Fix crash in gnutls_global_init after earlier init/deinit cycle.
Forwarded by Martin von Gagern <Martin.vGagern@gmx.net> from
<https://bugs.gentoo.org/272388>.

** libgnutls: Fix PKCS#12 decryption from password.
The encryption key derived from the password was incorrect for (on
average) 1 in every 128 input for random inputs.  Reported by "Kukosa,
Tomas" <tomas.kukosa@siemens-enterprise.com> in
<http://permalink.gmane.org/gmane.network.gnutls.general/1663>.

** API and ABI modifications:
No changes since last version.

* Version 2.8.0 (released 2009-05-27)

** doc: Fix gnutls_dh_get_prime_bits.  Fix error codes and algorithm lists.

** Major changes compared to the v2.4 branch:

*** lib: Linker version scripts reduces number of exported symbols.

*** lib: Limit exported symbols on systems without LD linker scripts.

*** libgnutls: Fix namespace issue with version symbols.

*** libgnutls: Add functions to verify a hash against a certificate.
gnutls_x509_crt_verify_hash: ADDED
gnutls_x509_crt_get_verify_algorithm: ADDED

*** gnutls-serv: Listen on all interfaces, including both IPv4 and IPv6.

*** i18n: The GnuTLS gettext domain is now 'libgnutls' instead of 'gnutls'.

*** certtool: Query for multiple dnsName subjectAltName in interactive mode.

*** gnutls-cli: No longer accepts V1 CAs by default during X.509 chain verify.

*** gnutls-serv: No longer disable MAC padding by default.

*** gnutls-cli: Certificate information output format changed.

*** libgnutls: New priority strings %VERIFY_ALLOW_SIGN_RSA_MD5
*** and %VERIFY_ALLOW_X509_V1_CA_CRT.

*** libgnutls: gnutls_x509_crt_print prints signature algorithm in oneline mode.

*** libgnutls: gnutls_openpgp_crt_print supports oneline mode.

*** libgnutls: gnutls_handshake when sending client hello during a
rehandshake, will not offer a version number larger than the current.

*** libgnutls: New interface to get key id for certificate requests.
gnutls_x509_crq_get_key_id: ADDED.

*** libgnutls: gnutls_x509_crq_print will now also print public key id.

*** certtool: --verify-chain now prints results of using library verification.

*** libgnutls: Libgcrypt initialization changed.

*** libgnutls: Small byte reads via gnutls_record_recv() optimized.

*** gnutls-cli: Return non-zero exit code on error conditions.

*** gnutls-cli: Corrected bug which caused a rehandshake request to be ignored.

*** certtool: allow setting arbitrary key purpose object identifiers.

*** libgnutls: Change detection of when to use a linker version script.
Use --enable-ld-version-script or --disable-ld-version-script to
override auto-detection logic.

*** Fix warnings and build GnuTLS with more warnings enabled.

*** New API to set X.509 credentials from PKCS#12 memory structure.
gnutls_certificate_set_x509_simple_pkcs12_mem: ADDED

*** Old libgnutls.m4 and libgnutls-config scripts removed.
Please use pkg-config instead.

*** libgnutls: Added functions to handle CRL extensions.
gnutls_x509_crl_get_authority_key_id: ADDED
gnutls_x509_crl_get_number: ADDED
gnutls_x509_crl_get_extension_oid: ADDED
gnutls_x509_crl_get_extension_info: ADDED
gnutls_x509_crl_get_extension_data: ADDED
gnutls_x509_crl_set_authority_key_id: ADDED
gnutls_x509_crl_set_number: ADDED

*** libgnutls: Added functions to handle X.509 extensions in Certificate
Requests.
gnutls_x509_crq_get_key_rsa_raw: ADDED
gnutls_x509_crq_get_attribute_info: ADDED
gnutls_x509_crq_get_attribute_data: ADDED
gnutls_x509_crq_get_extension_info: ADDED
gnutls_x509_crq_get_extension_data: ADDED
gnutls_x509_crq_get_key_usage: ADDED
gnutls_x509_crq_get_basic_constraints: ADDED
gnutls_x509_crq_get_subject_alt_name: ADDED
gnutls_x509_crq_get_subject_alt_othername_oid: ADDED
gnutls_x509_crq_get_extension_by_oid: ADDED
gnutls_x509_crq_set_subject_alt_name: ADDED
gnutls_x509_crq_set_basic_constraints: ADDED
gnutls_x509_crq_set_key_usage: ADDED
gnutls_x509_crq_get_key_purpose_oid: ADDED
gnutls_x509_crq_set_key_purpose_oid: ADDED
gnutls_x509_crq_print: ADDED
gnutls_x509_crt_set_crq_extensions: ADDED

*** certtool: Print and set CRL and CRQ extensions.

*** minitasn1: Internal copy updated to libtasn1 v2.1.

*** examples: Now released into the public domain.

*** The Texinfo and GTK-DOC manuals were improved.

*** Several self-tests were added and others improved.

*** API/ABI changes in GnuTLS 2.8 compared to GnuTLS 2.6.x
No officially supported interfaces have been modified or removed.  The
library should be completely backwards compatible on both the source
and binary level.

The shared library no longer exports some symbols that have never been
officially supported, i.e., not mentioned in any of the header files.
The symbols are:

  _gnutls*
  gnutls_asn1_tab

Normally when symbols are removed, the shared library version has to
be incremented.  This leads to a significant cost for everyone using
the library.  Because none of the above symbols have ever been
intended for use by well-behaved applications, we decided that the it
would be better for those applications to pay the price rather than
incurring problems on the majority of applications.

If it turns out that applications have been using unofficial
interfaces, we will need to release a follow-on release on the v2.8
branch to exports additional interfaces.  However, initial testing
suggests that few if any applications have been using any of the
internal symbols.

Although not a new change compared to 2.6.x, we'd like to remind you
interfaces have been modified so that X.509 chain verification now
also checks activation/expiration times on certificates.  The affected
functions are:

gnutls_x509_crt_list_verify: CHANGED, checks activation/expiration times.
gnutls_certificate_verify_peers: Likewise.
gnutls_certificate_verify_peers2: Likewise.
GNUTLS_CERT_NOT_ACTIVATED: ADDED.
GNUTLS_CERT_EXPIRED: ADDED.
GNUTLS_VERIFY_DISABLE_TIME_CHECKS: ADDED.

This change in behaviour was made during the GnuTLS 2.6.x cycle, and
we gave our rationale for it in earlier release notes.

The following symbols have been added to the library:

gnutls_certificate_set_x509_simple_pkcs12_mem: ADDED
gnutls_x509_crl_get_authority_key_id: ADDED
gnutls_x509_crl_get_extension_data: ADDED
gnutls_x509_crl_get_extension_info: ADDED
gnutls_x509_crl_get_extension_oid: ADDED
gnutls_x509_crl_get_number: ADDED
gnutls_x509_crl_set_authority_key_id: ADDED
gnutls_x509_crl_set_number: ADDED
gnutls_x509_crq_get_attribute_data: ADDED
gnutls_x509_crq_get_attribute_info: ADDED
gnutls_x509_crq_get_basic_constraints: ADDED
gnutls_x509_crq_get_extension_by_oid: ADDED
gnutls_x509_crq_get_extension_data: ADDED
gnutls_x509_crq_get_extension_info: ADDED
gnutls_x509_crq_get_key_id: ADDED.
gnutls_x509_crq_get_key_purpose_oid: ADDED
gnutls_x509_crq_get_key_rsa_raw: ADDED
gnutls_x509_crq_get_key_usage: ADDED
gnutls_x509_crq_get_subject_alt_name: ADDED
gnutls_x509_crq_get_subject_alt_othername_oid: ADDED
gnutls_x509_crq_print: ADDED
gnutls_x509_crq_set_basic_constraints: ADDED
gnutls_x509_crq_set_key_purpose_oid: ADDED
gnutls_x509_crq_set_key_usage: ADDED
gnutls_x509_crq_set_subject_alt_name: ADDED
gnutls_x509_crt_get_verify_algorithm: ADDED
gnutls_x509_crt_set_crq_extensions: ADDED
gnutls_x509_crt_verify_hash: ADDED

The following interfaces have been added to the header files:

GNUTLS_VERSION: ADDED, replaces LIBGNUTLS_VERSION.
GNUTLS_VERSION_MAJOR: ADDED, replaces LIBGNUTLS_VERSION_MAJOR.
GNUTLS_VERSION_MINOR: ADDED, replaces LIBGNUTLS_VERSION_MINOR.
GNUTLS_VERSION_PATCH: ADDED, replaces LIBGNUTLS_VERSION_PATCH.
GNUTLS_VERSION_NUMBER: ADDED, replaces LIBGNUTLS_VERSION_NUMBER.
GNUTLS_EXTRA_VERSION: ADDED, replaces LIBGNUTLS_EXTRA_VERSION.

The following interfaces have been deprecated:

LIBGNUTLS_VERSION: DEPRECATED.
LIBGNUTLS_VERSION_MAJOR: DEPRECATED.
LIBGNUTLS_VERSION_MINOR: DEPRECATED.
LIBGNUTLS_VERSION_PATCH: DEPRECATED.
LIBGNUTLS_VERSION_NUMBER: DEPRECATED.
LIBGNUTLS_EXTRA_VERSION: DEPRECATED.

* Version 2.7.14 (released 2009-05-26)

** libgnutls: Fix namespace issue with version symbol for libgnutls-extra.
The symbol LIBGNUTLS_EXTRA_VERSION were renamed to
GNUTLS_EXTRA_VERSION.  The old symbol will continue to work but is
deprecated.

** Doc: Several typo fixes in documentation.
Reported by Peter Hendrickson <pdh@wiredyne.com>.

** API and ABI modifications:
GNUTLS_VERSION: ADDED, replaces LIBGNUTLS_EXTRA_VERSION.
LIBGNUTLS_EXTRA_VERSION: DEPRECATED.

* Version 2.7.13 (released 2009-05-25)

** libgnutls: Fix version of some exported symbols in the shared library.
Reported by Andreas Metzler <ametzler@downhill.at.eu.org> in
<http://thread.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3576>.

** tests: Handle recently expired certificates in chainverify self-test.
Reported by Andreas Metzler <ametzler@downhill.at.eu.org> in
<http://permalink.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3580>.

** API and ABI modifications:
No changes since last version.

* Version 2.7.12 (released 2009-05-20)

** gnutls-serv, gnutls-cli-debug: Make them work on Windows.

** tests/crq_key_id: Don't read entropy from /dev/random in self-test.
Reported by Andreas Metzler <ametzler@downhill.at.eu.org> in
<http://permalink.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3570>.

** Fix build failures.
Missing sa_family_t and vsnprintf on IRIX.  Reported by "Tom
G. Christensen" <tgc@jupiterrise.com> in
<http://permalink.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3571>.

** minitasn1: Internal copy updated to libtasn1 v2.2.
GnuTLS should work fine with libtasn1 v1.x and that is still
supported.

** API and ABI modifications:
No changes since last version.

* Version 2.7.11 (released 2009-05-18)

** minitasn1: Fix build failure when using internal libtasn1.
Reported by "Tom G. Christensen" <tgc@jupiterrise.com> in
<http://permalink.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3548>.

** libgnutls: Fix build failure with --disable-cxx.
Reported by Andreas Metzler <ametzler@downhill.at.eu.org> in
<http://permalink.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3557>.

** gnutls-serv: Fix build failure for unportable NI_MAXHOST/NI_MAXSERV.
Reported by "Tom G. Christensen" <tgc@jupiterrise.com> in
<http://permalink.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3560>

** Building with many warning flags now requires --enable-gcc-warnings.
This avoids crying wolf for normal compiles.

** API and ABI modifications:
No changes since last version.

* Version 2.7.10 (released 2009-05-13)

** examples: Now released into the public domain.
This makes the license of the example code compatible with more
licenses, including the (L)GPL.

** minitasn1: Internal copy updated to libtasn1 v2.1.
GnuTLS should work fine with libtasn1 v1.x and that is still
supported.

** libgnutls: Fix crash in signature verification
The fix for the CVE-2009-1415 problem wasn't merged completely.

** doc: Fixes for GTK-DOC output.

** API and ABI modifications:
No changes since last version.

* Version 2.7.9 (released 2009-05-11)

** doc: Fix strings in man page of gnutls_priority_init.

** doc: Fix tables of error codes and supported algorithms.

** Fix build failure when cross-compiled using MinGW.

** Fix build failure when LZO is enabled.
Reported by Arfrever Frehtes Taifersar Arahesis
<arfrever.fta@gmail.com> in
<http://permalink.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3522>.

** Fix build failure on systems without AF_INET6, e.g., Solaris 2.6.
Reported by "Tom G. Christensen" <tgc@jupiterrise.com> in
<http://thread.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3524>.

** Fix warnings in self-tests.

** API and ABI modifications:
No changes since last version.

* Version 2.7.8 (released 2009-05-03)

** libgnutls: Fix DSA key generation.
Merged from stable branch.  [GNUTLS-SA-2009-2] [CVE-2009-1416]

** libgnutls: Check expiration/activation time on untrusted certificates.
Merged from stable branch.  Reported by Romain Francoise
<romain@orebokech.com>.  This changes the semantics of
gnutls_x509_crt_list_verify, which in turn is used by
gnutls_certificate_verify_peers and gnutls_certificate_verify_peers2.
We add two new gnutls_certificate_status_t codes for reporting the new
error condition, GNUTLS_CERT_NOT_ACTIVATED and GNUTLS_CERT_EXPIRED.
We also add a new gnutls_certificate_verify_flags flag,
GNUTLS_VERIFY_DISABLE_TIME_CHECKS, that can be used to disable the new
behaviour.  [GNUTLS-SA-2009-3] [CVE-2009-1417]

** lib: Linker version scripts reduces number of exported symbols.
The linker version script now lists all exported ABIs explicitly, to
avoid accidentally exporting unintended functions.  Compared to
before, most symbols beginning with _gnutls* are no longer exported.
These functions have never been intended for use by applications, and
there were no prototypes for these function in the public header
files.  Thus we believe it is possible to do this without incrementing
the library ABI version which normally has to be done when removing an
interface.

** lib: Limit exported symbols on systems without LD linker scripts.
Before all symbols were exported.  Now we limit the exported symbols
to (for libgnutls and libgnutls-extra) gnutls* and (for libgnutls)
_gnutls*.  This is a superset of the actual supported ABI, but still
an improvement compared to before.  This is implemented using Libtool
-export-symbols-regex.  It is more portable than linker version
scripts.

** libgnutls: Incremented CURRENT/AGE libtool version to reflect new symbols.
This should have been done in the last release.

** gnutls-serv: Listen on all interfaces, including both IPv4 and IPv6.
Reported by Peter Hendrickson <pdh@wiredyne.com> in
<http://thread.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3476>.

** doc: Improved sections for the info manual.
We now follow the advice given by the texinfo manual on which
directory categories to use.  In particular, libgnutls moved from the
'GNU Libraries' section to the 'Software libraries' and the command
line tools moved from 'Network Applications' to 'System
Administration'.

** API and ABI modifications:
gnutls_x509_crt_list_verify: CHANGED, checks activation/expiration times.
gnutls_certificate_verify_peers: Likewise.
gnutls_certificate_verify_peers2: Likewise.
GNUTLS_CERT_NOT_ACTIVATED: ADDED.
GNUTLS_CERT_EXPIRED: ADDED.
GNUTLS_VERIFY_DISABLE_TIME_CHECKS: ADDED.

* Version 2.7.7 (released 2009-04-20)

** libgnutls: Applied patch by Cedric Bail to add functions
gnutls_x509_crt_verify_hash() and gnutls_x509_crt_get_verify_algorithm().

** gnutls.pc: Add -ltasn1 to 'pkg-config --libs --static gnutls' output.
Reported by Andreas Metzler <ametzler@downhill.at.eu.org> in
<http://article.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3467>.

** minitasn1: Internal copy updated to libtasn1 v1.8.
GnuTLS is also internally ready to be used with libtasn1 v2.0.

** doc: Fix build failure of errcodes/printlist.
Reported by Roman Bogorodskiy <novel@FreeBSD.org> in
<http://permalink.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3435>.

** i18n: The GnuTLS gettext domain is now 'libgnutls' instead of 'gnutls'.
It is currently only used by the core library.  This will enable a new
domain 'gnutls' for translations of the command line tools.

** Corrected possible memory corruption on signature verification failure.
Reported by Miroslav Kratochvil <exa.exa@gmail.com>

** API and ABI modifications:
gnutls_x509_crt_verify_hash: ADDED
gnutls_x509_crt_get_verify_algorithm: ADDED

* Version 2.7.6 (released 2009-02-27)

** certtool: Query for multiple dnsName subjectAltName in interactive mode.
This applies both to generating certificates and certificate requests.

** pkix.asn: Removed unneeded definitions to reduce memory usage.

** gnutls-cli: No longer accepts V1 CAs by default during X.509 chain verify.
Use --priority NORMAL:%VERIFY_ALLOW_X509_V1_CA_CRT to permit V1 CAs to
be used for chain verification.

** gnutls-serv: No longer disable MAC padding by default.
Use --priority NORMAL:%COMPAT to disable MAC padding again.

** gnutls-cli: Certificate information output format changed.
The tool now uses libgnutls' functions to print certificate
information.  This avoids code duplication.

** libgnutls: New priority strings %VERIFY_ALLOW_SIGN_RSA_MD5
** and %VERIFY_ALLOW_X509_V1_CA_CRT.
They can be used to override the default certificate chain validation
behaviour.

** libgnutls: Added %SSL3_RECORD_VERSION priority string that allows to
specify the client hello message record version. Used to overcome buggy
TLS servers. Report by Martin von Gagern.

** libgnutls: gnutls_x509_crt_print prints signature algorithm in oneline mode.

** libgnutls: gnutls_openpgp_crt_print supports oneline mode.

** doc: Update gnutls-cli and gnutls-serv --help output descriptions.

** API and ABI modifications:
No changes since last version.

* Version 2.7.5 (released 2009-02-06)

** libgnutls: Accept chains where intermediary certs are trusted.
Before GnuTLS needed to validate the entire chain back to a
self-signed certificate.  GnuTLS will now stop looking when it has
found an intermediary trusted certificate.  The new behaviour is
useful when chains, for example, contains a top-level CA, an
intermediary CA signed using RSA-MD5, and an end-entity certificate.
To avoid chain validation errors due to the RSA-MD5 cert, you can
explicitly add the intermediary RSA-MD5 cert to your trusted certs.
The signature on trusted certificates are not checked, so the chain
has a chance to validate correctly.  Reported by "Douglas E. Engert"
<deengert@anl.gov> in
<http://thread.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3351>.

** libgnutls: result_size in gnutls_hex_encode now holds
the size of the result. Report by John Brooks <special@dereferenced.net>.

** libgnutls: gnutls_handshake when sending client hello during a
rehandshake, will not offer a version number larger than the current.
Reported by Tristan Hill <stan@saticed.me.uk>.

** libgnutls: Permit V1 Certificate Authorities properly.
Before they were mistakenly rejected even though
GNUTLS_VERIFY_ALLOW_ANY_X509_V1_CA_CRT and/or
GNUTLS_VERIFY_ALLOW_X509_V1_CA_CRT were supplied.  Reported by
"Douglas E. Engert" <deengert@anl.gov> in
<http://thread.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3351>.

** API and ABI modifications:
No changes since last version.

* Version 2.7.4 (released 2009-01-07)

** libgnutls: deprecate X.509 validation chains using MD5 and MD2 signatures.
This is a bugfix -- the previous attempt to do this from internal x509
certificate verification procedures did not return the correct value
for certificates using a weak hash.  Reported by Daniel Kahn Gillmor
<dkg@fifthhorseman.net> in
<http://thread.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3332>,
debugged and patch by Tomas Mraz <tmraz@redhat.com> and Daniel Kahn
Gillmor <dkg@fifthhorseman.net>.

** libgnutls: New interface to get key id for certificate requests.
Patch from David Marín Carreño <davefx@gmail.com> in
<http://thread.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3321>.

** libgnutls: gnutls_x509_crq_print will now also print public key id.

** certtool: --verify-chain now prints results of using library verification.
Earlier, certtool --verify-chain used its own validation algorithm
which wasn't guaranteed to give the same result as the libgnutls
internal validation algorithm.  Now this command print a new final
line with header 'Chain verification output:' that contains the result
from using the internal verification algorithm on the same chain.

** tests: Add crq_key_id self-test of gnutls_x509_crq_get_key_id.

** API and ABI modifications:
gnutls_x509_crq_get_key_id: ADDED.

* Version 2.7.3 (released 2008-12-10)

** libgnutls: Fix chain verification for chains that ends with RSA-MD2 CAs.
Reported by Michael Kiefer <Michael-Kiefer@web.de> in
<https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=507633> forwarded by
Andreas Metzler <ametzler@downhill.at.eu.org> in
<http://thread.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3309>.

** libgnutls: Libgcrypt initialization changed.
If libgcrypt has not already been initialized, GnuTLS will now
initialize libgcrypt with disabled secure memory.  Initialize
libgcrypt explicitly in your application if you want to enable secure
memory.  Before GnuTLS initialized libgcrypt to use GnuTLS's memory
allocation functions, which doesn't use secure memory, so there is no
real change in behaviour.

** libgnutls: Fix memory leak in PSK authentication.
Reported by Michael Weiser <michael@weiser.dinsnail.net> in
<http://permalink.gmane.org/gmane.network.gnutls.general/1465>.

** libgnutls: Small byte reads via gnutls_record_recv() optimized.

** certtool: Move gcry_control(GCRYCTL_ENABLE_QUICK_RANDOM, 0) call earlier.
It needs to be invoked before libgcrypt is initialized.

** gnutls-cli: Return non-zero exit code on error conditions.

** gnutls-cli: Corrected bug which caused a rehandshake request to be ignored.

** tests: Added chainverify self-test that tests X.509 chain verifications.

** API and ABI modifications:
No changes since last version.

* Version 2.7.2 (released 2008-11-18)

** libgnutls: Fix X.509 certificate chain validation error. [GNUTLS-SA-2008-3]
The flaw makes it possible for man in the middle attackers (i.e.,
active attackers) to assume any name and trick GnuTLS clients into
trusting that name.  Thanks for report and analysis from Martin von
Gagern <Martin.vGagern@gmx.net>.  [CVE-2008-4989]

Any updates with more details about this vulnerability will be added
to <https://www.gnu.org/software/gnutls/security.html>

** libgnutls: Fix namespace issue with version symbols.
The symbols LIBGNUTLS_VERSION, LIBGNUTLS_VERSION_MAJOR,
LIBGNUTLS_VERSION_MINOR, LIBGNUTLS_VERSION_PATCH, and
LIBGNUTLS_VERSION_NUMBER were renamed to GNUTLS_VERSION_NUMBER,
GNUTLS_VERSION_MAJOR, GNUTLS_VERSION_MINOR, GNUTLS_VERSION_PATCH, and
GNUTLS_VERSION_NUMBER respectively.  The old symbols will continue to
work but are deprecated.

** certtool: allow setting arbitrary key purpose object identifiers.

** libgnutls: Fix detection of C99 macros, to make debug logging work again.

** libgnutls: Add missing prototype for gnutls_srp_set_prime_bits.
Reported by Kevin Quick <quick@sparq.org> in
<https://savannah.gnu.org/support/index.php?106454>.

** libgnutls-extra: Make building with LZO compression work again.
Build failure reported by Arfrever Frehtes Taifersar Arahesis
<arfrever.fta@gmail.com> in
<http://permalink.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3194>.

** libgnutls: Change detection of when to use a linker version script.
Use --enable-ld-version-script or --disable-ld-version-script to
override auto-detection logic.

** doc: Change license on the manual to GFDLv1.3+.

** doc: GTK-DOC fixes for new splitted configuration system.

** doc: Texinfo stylesheet uses white background.

** tests: Add cve-2008-4989.c self-test.
Tests regressions of the GNUTLS-SA-2008-3 security problem, and the
follow-on problem with crashes on length 1 certificate chains.

** gnulib: Deprecated modules removed.
Modules include memchr and memcmp.

** Fix warnings and build GnuTLS with more warnings enabled.

** minitasn1: Internal copy updated to libtasn1 v1.7.

** API and ABI modifications:
gnutls_certificate_set_x509_simple_pkcs12_mem: ADDED
GNUTLS_VERSION: ADDED, replaces LIBGNUTLS_VERSION.
GNUTLS_VERSION_MAJOR: ADDED, replaces LIBGNUTLS_VERSION_MAJOR.
GNUTLS_VERSION_MINOR: ADDED, replaces LIBGNUTLS_VERSION_MINOR.
GNUTLS_VERSION_PATCH: ADDED, replaces LIBGNUTLS_VERSION_PATCH.
GNUTLS_VERSION_NUMBER: ADDED, replaces LIBGNUTLS_VERSION_NUMBER.
LIBGNUTLS_VERSION: DEPRECATED.
LIBGNUTLS_VERSION_MAJOR: DEPRECATED.
LIBGNUTLS_VERSION_MINOR: DEPRECATED.
LIBGNUTLS_VERSION_PATCH: DEPRECATED.
LIBGNUTLS_VERSION_NUMBER: DEPRECATED.

* Version 2.7.1 (released 2008-10-31)

** certtool: print a PKCS #8 key even if it is not encrypted.

** Old libgnutls.m4 and libgnutls-config scripts removed.
Please use pkg-config instead.

** Configuration system modified.
There is now a configure script in lib/ and libextra/ as well, because
gnulib works better with a config.h per gnulib directory.

** API and ABI modifications:
No changes since last version.

* Version 2.7.0 (released 2008-10-16)

** libgnutls: Added functions to handle CRL extensions.

** libgnutls: Added functions to handle X.509 extensions in Certificate
Requests.

** libgnutls: Improved error string for GNUTLS_E_AGAIN.
Suggested by "Lavrentiev, Anton (NIH/NLM/NCBI) [C]" <lavr@ncbi.nlm.nih.gov>.

** certtool: Print and set CRL and CRQ extensions.

** libgnutls-extra: Protect internal symbols with static.
Fixes problem when linking certtool statically.  Tiny patch from Aaron
Ucko <ucko@ncbi.nlm.nih.gov>.

** libgnutls-openssl: fix out of bounds access.
Problem in X509_get_subject_name and X509_get_issuer_name.  Tiny patch
from Thomas Viehmann <tv@beamnet.de>.

** libgnutlsxx: Define server_session::get_srp_username even if no SRP.

** tests: Make tests compile when using internal libtasn1.
Patch by ludo@gnu.org (Ludovic Courtès).

** Changed detection of libtasn1 and libgcrypt to avoid depending on *-config.
We now require a libgcrypt that has Camellia constants declared in
gcrypt.h, which means v1.3.0 or later.

** API and ABI modifications:
gnutls_x509_crl_get_authority_key_id: ADDED
gnutls_x509_crl_get_number: ADDED
gnutls_x509_crl_get_extension_oid: ADDED
gnutls_x509_crl_get_extension_info: ADDED
gnutls_x509_crl_get_extension_data: ADDED
gnutls_x509_crl_set_authority_key_id: ADDED
gnutls_x509_crl_set_number: ADDED
gnutls_x509_crq_get_key_rsa_raw: ADDED
gnutls_x509_crq_get_attribute_info: ADDED
gnutls_x509_crq_get_attribute_data: ADDED
gnutls_x509_crq_get_extension_info: ADDED
gnutls_x509_crq_get_extension_data: ADDED
gnutls_x509_crq_get_key_usage: ADDED
gnutls_x509_crq_get_basic_constraints: ADDED
gnutls_x509_crq_get_subject_alt_name: ADDED
gnutls_x509_crq_get_subject_alt_othername_oid: ADDED
gnutls_x509_crq_get_extension_by_oid: ADDED
gnutls_x509_crq_set_subject_alt_name: ADDED
gnutls_x509_crq_set_basic_constraints: ADDED
gnutls_x509_crq_set_key_usage: ADDED
gnutls_x509_crq_get_key_purpose_oid: ADDED
gnutls_x509_crq_set_key_purpose_oid: ADDED
gnutls_x509_crq_print: ADDED
gnutls_x509_crt_set_crq_extensions: ADDED

* Version 2.6.6 (released 2009-04-30)

** libgnutls: Corrected double free on signature verification failure.
Reported by Miroslav Kratochvil <exa.exa@gmail.com>.  See the advisory
for more details.  [GNUTLS-SA-2009-1] [CVE-2009-1415]

** libgnutls: Fix DSA key generation.
Noticed when investigating the previous GNUTLS-SA-2009-1 problem.  All
DSA keys generated using GnuTLS 2.6.x are corrupt.  See the advisory
for more details.  [GNUTLS-SA-2009-2] [CVE-2009-1416]

** libgnutls: Check expiration/activation time on untrusted certificates.
Reported by Romain Francoise <romain@orebokech.com>.  Before the
library did not check activation/expiration times on certificates, and
was documented as not doing so.  We have realized that many
applications that use libgnutls, including gnutls-cli, fail to perform
proper checks.  Implementing similar logic in all applications leads
to code duplication.  Hence, we decided to check whether the current
time (as reported by the time function) is within the
activation/expiration period of certificates when verifying untrusted
certificates.

This changes the semantics of gnutls_x509_crt_list_verify, which in
turn is used by gnutls_certificate_verify_peers and
gnutls_certificate_verify_peers2.  We add two new
gnutls_certificate_status_t codes for reporting the new error
condition, GNUTLS_CERT_NOT_ACTIVATED and GNUTLS_CERT_EXPIRED.  We also
add a new gnutls_certificate_verify_flags flag,
GNUTLS_VERIFY_DISABLE_TIME_CHECKS, that can be used to disable the new
behaviour.

More details about the vulnerabilities will be posted at
<https://www.gnu.org/software/gnutls/security.html>.

** gnutls-cli, gnutls-cli-debug: Fix AIX build problem.
Reported by LAUPRETRE François (P) <francois.laupretre@ratp.fr> in
<http://permalink.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3468>.

** tests: Fix linking of tests/openpgp/keyring self-test.
Reported by Daniel Black in <https://savannah.gnu.org/support/?106543>.

** API and ABI modifications:
gnutls_x509_crt_list_verify: CHANGED, checks activation/expiration times.
gnutls_certificate_verify_peers: Likewise.
gnutls_certificate_verify_peers2: Likewise.
GNUTLS_CERT_NOT_ACTIVATED: ADDED.
GNUTLS_CERT_EXPIRED: ADDED.
GNUTLS_VERIFY_DISABLE_TIME_CHECKS: ADDED.

* Version 2.6.5 (released 2009-04-11)

** libgnutls: Added %SSL3_RECORD_VERSION priority string that allows to
specify the client hello message record version. Used to overcome buggy
TLS servers. Report by Martin von Gagern.

** GnuTLS no longer uses the libtasn1-config script to find libtasn1.
Libtasn1 0.3.4 or later is required.  This is to align with the
upcoming libtasn1 v2.0 release that doesn't have a libtasn1-script.

** API and ABI modifications:
No changes since last version.

* Version 2.6.4 (released 2009-02-06)

** libgnutls: Accept chains where intermediary certs are trusted.
Before GnuTLS needed to validate the entire chain back to a
self-signed certificate.  GnuTLS will now stop looking when it has
found an intermediary trusted certificate.  The new behaviour is
useful when chains, for example, contains a top-level CA, an
intermediary CA signed using RSA-MD5, and an end-entity certificate.
To avoid chain validation errors due to the RSA-MD5 cert, you can
explicitly add the intermediary RSA-MD5 cert to your trusted certs.
The signature on trusted certificates are not checked, so the chain
has a chance to validate correctly.  Reported by "Douglas E. Engert"
<deengert@anl.gov> in
<http://thread.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3351>.

** libgnutls: result_size in gnutls_hex_encode now holds
the size of the result. Report by John Brooks <special@dereferenced.net>.

** libgnutls: gnutls_handshake when sending client hello during a
rehandshake, will not offer a version number larger than the current.
Reported by Tristan Hill <stan@saticed.me.uk>.

** libgnutls: Permit V1 Certificate Authorities properly.
Before they were mistakenly rejected even though
GNUTLS_VERIFY_ALLOW_ANY_X509_V1_CA_CRT and/or
GNUTLS_VERIFY_ALLOW_X509_V1_CA_CRT were supplied.  Reported by
"Douglas E. Engert" <deengert@anl.gov> in
<http://thread.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3351>.

** libgnutls: deprecate X.509 validation chains using MD5 and MD2 signatures.
This is a bugfix -- the previous attempt to do this from internal x509
certificate verification procedures did not return the correct value
for certificates using a weak hash.  Reported by Daniel Kahn Gillmor
<dkg@fifthhorseman.net> in
<http://thread.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3332>,
debugged and patch by Tomas Mraz <tmraz@redhat.com> and Daniel Kahn
Gillmor <dkg@fifthhorseman.net>.

** libgnutls: Fix compile error with Sun CC.
Reported by Jeff Cai <jeff.cai@sun.com> in
<https://savannah.gnu.org/support/?106549>.

** API and ABI modifications:
No changes since last version.

* Version 2.6.3 (released 2008-12-12)

** libgnutls: Fix chain verification for chains that ends with RSA-MD2 CAs.
Reported by Michael Kiefer <Michael-Kiefer@web.de> in
<https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=507633> forwarded by
Andreas Metzler <ametzler@downhill.at.eu.org> in
<http://thread.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3309>.

** libgnutls: Fix memory leak in PSK authentication.
Reported by Michael Weiser <michael@weiser.dinsnail.net> in
<http://permalink.gmane.org/gmane.network.gnutls.general/1465>.

** certtool: Move gcry_control(GCRYCTL_ENABLE_QUICK_RANDOM, 0) call earlier.
It needs to be invoked before libgcrypt is initialized.

** gnutls-cli: Return non-zero exit code on error conditions.

** gnutls-cli: Corrected bug which caused a rehandshake request to be ignored.

** API and ABI modifications:
No changes since last version.

* Version 2.6.2 (released 2008-11-12)

** libgnutls: Fix crash in X.509 validation code for self-signed certificates.
The patch to fix the security problem GNUTLS-SA-2008-3 introduced a
problem for certificate chains that contained just one self-signed
certificate.  Reported by Michael Meskes <meskes@debian.org> in
<https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=505279>.

** API and ABI modifications:
No changes since last version.

* Version 2.6.1 (released 2008-11-10)

** libgnutls: Fix X.509 certificate chain validation error. [GNUTLS-SA-2008-3]
The flaw makes it possible for man in the middle attackers (i.e.,
active attackers) to assume any name and trick GnuTLS clients into
trusting that name.  Thanks for report and analysis from Martin von
Gagern <Martin.vGagern@gmx.net>.  [CVE-2008-4989]

Any updates with more details about this vulnerability will be added
to <https://www.gnu.org/software/gnutls/security.html>

** libgnutls: Add missing prototype for gnutls_srp_set_prime_bits.
Reported by Kevin Quick <quick@sparq.org> in
<https://savannah.gnu.org/support/index.php?106454>.

** libgnutls-extra: Protect internal symbols with static.
Fixes problem when linking certtool statically.  Tiny patch from Aaron
Ucko <ucko@ncbi.nlm.nih.gov>.

** libgnutls-openssl: Fix patch against X509_get_issuer_name.
It incorrectly returned the subject DN instead of issuer DN in v2.6.0.
Thanks to Thomas Viehmann <tv@beamnet.de> for report.

** certtool: Print a PKCS #8 key even if it is not encrypted.

** tests: Make tests compile when using internal libtasn1.
Patch by ludo@gnu.org (Ludovic Courtès).

** API and ABI modifications:
No changes since last version.

* Version 2.6.0 (released 2008-10-06)

** libgnutls: Correct printing and parsing of IPv6 addresses.

** libgnutls-openssl: fix out of bounds access.
Problem in X509_get_subject_name and X509_get_issuer_name.  Tiny patch
from Thomas Viehmann <tv@beamnet.de>.

** certtool: Use inet_pton for parsing IPv6 addresses.

** Major changes compared to the v2.4 branch:

*** Added API to replace and update the crypto backend.

*** certtool: can add several subject alternative names via template file.

*** opencdk: Parse (but not decrypt) encrypted secret keys.

*** libgnutls: gnutls_x509_crt_set_subject_alt_name() was added that can
either set or append alternative names. It can also handle binary structures
such as IP addresses.

*** libgnutls: New function to set minimum acceptable SRP bits.
The function is gnutls_srp_set_prime_bits.

*** libgnutls: Add interface to deal with public key and signature algorithms.
The functions are called gnutls_pk_list, gnutls_pk_get_id,
gnutls_sign_list, and gnutls_sign_get_id.

*** libgnutls: New interfaces to get name of public key and signing algorithms.
The functions are gnutls_sign_get_name and gnutls_pk_get_name.

*** libgnutls: New API to get a string corresponding to a error symbol.
The function is gnutls_strerror_name.

*** libgnutls: New API to set the public parameters in a certificate request
*** from a private key.
The function is gnutls_x509_crq_set_key_rsa_raw.

*** libgnutls: New API to set a callback to extract TLS Finished data.
The function to register is gnutls_session_set_finished_function and
it takes a callback of the gnutls_finished_callback_func type.

*** libgnutls: Fix namespace problem with TLS_MASTER_SIZE and TLS_RANDOM_SIZE.

*** libgnutls: New interface to register a new TLS extension handler.
The new function gnutls_ext_register can be used to register handlers
for specific TLS extension types.  The callback functions have the new
types gnutls_ext_recv_func and gnutls_ext_send_func.  A type to
classify TLS extensions, gnutls_ext_parse_type_t, has been added as
well.

*** libgnutls-extra: Add function to work with Libgcrypt in FIPS mode.
The function is gnutls_register_md5_handler.  When libgcrypt is in
FIPS mode, MD5 is disabled, but TLS normally requires use of MD5 in
the PRF.

*** API/ABI changes in GnuTLS 2.6
No functions have been removed or modified.  The library should be
fully backwards compatible on both the source and binary level.

A new header file <gnutls/crypto.h> have been added.  It contains
definitions related to replacing the internal crypto functionality.
All definitions and the header itself is experimental but supported.

We have realized that the symbols TLS_MASTER_SIZE and TLS_RANDOM_SIZE
does not use the normal namespace.  We have added GNUTLS_MASTER_SIZE
and GNUTLS_RANDOM_SIZE, but the old symbols are still defined.

The following functions have been added to libgnutls:

GNUTLS_MASTER_SIZE
GNUTLS_RANDOM_SIZE
gnutls_crypto_bigint_register2
gnutls_crypto_cipher_register2
gnutls_crypto_digest_register2
gnutls_crypto_mac_register2
gnutls_crypto_pk_register2
gnutls_crypto_rnd_register2
gnutls_crypto_single_cipher_register2
gnutls_crypto_single_digest_register2
gnutls_crypto_single_mac_register2
gnutls_ext_register
gnutls_pk_get_id
gnutls_pk_get_name
gnutls_pk_list
gnutls_session_set_finished_function
gnutls_sign_get_id
gnutls_sign_get_name
gnutls_sign_list
gnutls_srp_set_prime_bits:
gnutls_strerror_name
gnutls_x509_crq_set_key_rsa_raw
gnutls_x509_crt_set_crl_dist_points2
gnutls_x509_crt_set_subject_alt_name

The following functions have been added to libgnutls-extra:

gnutls_register_md5_handler

** API and ABI modifications:
No changes since last version.

* Version 2.5.9 (released 2008-09-29)

** libgnutls: Fix several memory leaks.
Reported by Sam Varshavchik <mrsam@courier-mta.com>.

** libgnutls: Fix buffer overrun in gnutls_x509_crt_list_import.
Report and patch by Jonathan Manktelow.

** libgnutls: crypto.h gnutls_pk_params_st changes allocation strategy.
The parameters are now allocated in the structure itself.

** doc: Texinfo HTML manual uses a stylesheet to improve readability.

** tests: Scripts now use EXEEXT properly.
Modern libtool doesn't create wrapper script, so the self tests need
to invoke certtool.exe under MinGW32+Wine.

** Uses autoconf 2.63, automake 1.10.1, libtool 2.2.6a.
Automake warnings are now also enabled.

** API and ABI modifications:
gnutls_pk_params_st: MODIFIED

* Version 2.5.8 (released 2008-09-21)

** certtool: updated so it can add several subject alternative names using
the template file.

** libgnutls: gnutls_x509_crt_set_subject_alt_name() was added that can
either set or append alternative names. It can also handle binary structures
such as IP addresses.

** libgnutls: Fix crash in hashing code when using non-libgcrypt handlers.

** libgnutls: New function to set minimum acceptable SRP bits.
The function is gnutls_srp_set_prime_bits.  Tiny patch by Kevin Quick
<quick@sparq.org> in <https://savannah.gnu.org/support/index.php?106454>.

** libgnutls: Check for overflows in gnutls_calloc and gnutls_secure_calloc.
Also fix overflows in calls to those functions.  Reported by Werner
Koch <wk@gnupg.org>.

** libgnutls-extra: Add function to work with Libgcrypt in FIPS mode.
The function is gnutls_register_md5_handler.  When libgcrypt is in
FIPS mode, MD5 is disabled, but TLS normally requires use of MD5 in
the PRF.

** Opencdk: Add calls to gnutls_assert to ease debugging.

** Indent code.

** API and ABI modifications:
gnutls_srp_set_prime_bits: ADDED
gnutls_register_md5_handler: ADDED
gnutls_x509_crt_set_crl_dist_points2: ADDED
gnutls_x509_crt_set_subject_alt_name: ADDED

* Version 2.5.7 (released 2008-09-16)

** libgnutls: New interfaces to get name of public key and signing algorithms.
The functions are gnutls_sign_get_name and gnutls_pk_get_name.

** libgnutls: Don't crash when gnutls_credentials_set is called twice.

** libgnutls: Fix libgnutls shared library version.
It wasn't properly incremented after adding symbols in the last
release.

** manual: Now mention supported public key and public key signing algorithms.

** tests/openssl: initialize gnutls before use.

** tests/setcredcrash: New test to catch regressions of gnutls_credentials_set.

** GTK-DOC manual: mention new symbols in 2.6.x.  Mention crypto.h functions.

** API and ABI modifications:
gnutls_sign_get_name: ADDED
gnutls_pk_get_name: ADDED

* Version 2.5.6 (released 2008-09-08)

** libgnutls: Add interface to deal with public key and signature algorithms.
The functions are called gnutls_pk_list, gnutls_pk_get_id,
gnutls_sign_list, and gnutls_sign_get_id.  Suggested by Sam
Varshavchik <mrsam@courier-mta.com>.

** libgnutls: Refactor and clean up some code.

** libgnutls: Fix compile error with Sun CC.

** gnutls-cli: Improve --list output to include public key and signature algs.

** gnutls-cli, gnutls-serv: Remove --copyright parameter.
Use standard --version to get license info.

** gnutls-cli.1: Document all new parameters.
Thanks to James Westby <jw+debian@jameswestby.net>.

** tests: New self-test pgps2kgnu to test parsing of encrypted secrets.
Contributed by Daniel Kahn Gillmor <dkg-debian.org@fifthhorseman.net>.

** API and ABI modifications:
gnutls_pk_list: ADDED
gnutls_pk_get_id: ADDED
gnutls_sign_list: ADDED
gnutls_sign_get_id: ADDED

* Version 2.5.5 (released 2008-08-29)

** libgnutls: New API to get a string corresponding to a error symbol.
The function is gnutls_strerror_name.

** libgnutls: Fix include paths so that building with internal libtasn1 works.
Reported by "jth.net ApS" <info@jth.net>.

** libgnutls: Fix segmentation fault when generating private keys.
Reported by Daniel Kahn Gillmor <dkg-debian.org@fifthhorseman.net>.

** libgnutls: Remove code to import certificate chains in PKCS#7 format.
The code has not worked since v0.9.0 and apparently nobody has missed
it, so we decided to remove the code rather than fix it.  If you have
old certificate chains stored in PKCS#7 format, you can convert them
to a list of PEM certificates by using 'certtool --p7-info'.  Reported
by Christian Grothoff <christian@grothoff.org>.

** opencdk: Parse (but not decrypt) encrypted secret keys.
Contributed by Daniel Kahn Gillmor <dkg-debian.org@fifthhorseman.net>.

** libgnutls: Fix many warnings.

** Included copy of libtasn1 is upgraded to version 1.5.

** Add French translation, thanks to Nicolas Provost.

** API and ABI modifications:
gnutls_strerror_name: ADDED

* Version 2.5.4 (released 2008-08-19)

** Fix secure memory initialization of libgcrypt.
Reported by Joe Orton <joe@manyfish.co.uk> in
<http://permalink.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/2992>.

** Doc fixes.
Reference to NIST SP 800-57 in the manual on key size recommendations.
Added 'Since:' tags to new APIs for gtk-doc.

** API and ABI modifications:
No changes since last version.

* Version 2.5.3 (released 2008-08-14)

** libgnutls: New API to set the public parameters in a certificate request
** from a private key.
The function is gnutls_x509_crq_set_key_rsa_raw.  Inspired by
discussion with "Zach C." <fxchip@gmail.com>.

** libgnutls: New API to set a callback to extract TLS Finished data.
The function to register is gnutls_session_set_finished_function and
it takes a callback of the gnutls_finished_callback_func type.

** libgnutls: Drop final comma after GNUTLS_CRT_PRINT_UNSIGNED_FULL in enum.
Reported in <https://savannah.gnu.org/support/?106453>.

** libgnutls: Fix namespace problem with TLS_MASTER_SIZE and TLS_RANDOM_SIZE.
The new names are GNUTLS_MASTER_SIZE and GNUTLS_RANDOM_SIZE.  The old
names are mapped to the new names in compat.h.  These mappings will
likely be removed more quickly than other mappings in that file due to
the namespace violation.

** libgnutlsxx: Make it build when SRP is disabled.

** doc: Add doxygen files in doc/doxygen/.

** API and ABI modifications:
gnutls_x509_crq_set_key_rsa_raw: ADDED
gnutls_session_set_finished_function: ADDED
gnutls_finished_callback_func: ADDED
GNUTLS_MASTER_SIZE: ADDED
GNUTLS_RANDOM_SIZE: ADDED
TLS_MASTER_SIZE: DEPRECATED
TLS_RANDOM_SIZE: DEPRECATED

* Version 2.5.2 (released 2008-07-08)

** libgnutls: Fix bug in gnutls_dh_params_generate2.
The prime and generator was swapped.

** libgnutls: New interface to register a new TLS extension handler.
The new function gnutls_ext_register can be used to register handlers
for specific TLS extension types.  The callback functions have the new
types gnutls_ext_recv_func and gnutls_ext_send_func.  A type to
classify TLS extensions, gnutls_ext_parse_type_t, has been added as
well.

** Move more code for TLS/IA extension from libgnutls to libgnutls-extra.
This was made possible by using the new gnutls_ext_register interface.
The TLS/IA functionality has only been supported through the
libgnutls-extra library, so it makes sense for the code to belong
there too.

** API and ABI modifications:
gnutls_ext_recv_func: ADDED
gnutls_ext_send_func: ADDED
gnutls_ext_parse_type_t: ADDED
gnutls_ext_register: ADDED

* Version 2.5.1 (released 2008-07-02)

** Indent code.

** API and ABI modifications:
No changes since last version.

* Version 2.5.0 (released 2008-07-02)

** Port fixes from v2.4.1 release, see below.

** Added API to replace and update the crypto backend.
The header gnutls/crypto.h is now officially supported, and declares
the symbols below.

** Rewritten opencdk crypto backend, to use the gnutls internal one.

** Update gnulib and translations.
The gnulib gc crypto code has been removed since it was never finished
and is no longer even used.  An internal non-libgcrypt crypto
implementation may be added in the future, but we'll decide that later
on.

** API and ABI modifications:
gnutls_crypto_bigint_register2: ADDED.
gnutls_crypto_cipher_register2: ADDED.
gnutls_crypto_digest_register2: ADDED.
gnutls_crypto_mac_register2: ADDED.
gnutls_crypto_pk_register2: ADDED.
gnutls_crypto_rnd_register2: ADDED.
gnutls_crypto_single_cipher_register2: ADDED.
gnutls_crypto_single_digest_register2: ADDED.
gnutls_crypto_single_mac_register2: ADDED.

* Version 2.4.3 (released 2009-02-06)

** libgnutls: Accept chains where intermediary certs are trusted.
Before GnuTLS needed to validate the entire chain back to a
self-signed certificate.  GnuTLS will now stop looking when it has
found an intermediary trusted certificate.  The new behaviour is
useful when chains, for example, contains a top-level CA, an
intermediary CA signed using RSA-MD5, and an end-entity certificate.
To avoid chain validation errors due to the RSA-MD5 cert, you can
explicitly add the intermediary RSA-MD5 cert to your trusted certs.
The signature on trusted certificates are not checked, so the chain
has a chance to validate correctly.  Reported by "Douglas E. Engert"
<deengert@anl.gov> in
<http://thread.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3351>.

** libgnutls: Permit V1 Certificate Authorities properly.
Before they were mistakenly rejected even though
GNUTLS_VERIFY_ALLOW_ANY_X509_V1_CA_CRT and/or
GNUTLS_VERIFY_ALLOW_X509_V1_CA_CRT were supplied.  Reported by
"Douglas E. Engert" <deengert@anl.gov> in
<http://thread.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3351>.

** libgnutls: deprecate X.509 validation chains using MD5 and MD2 signatures.
This is a bugfix -- the previous attempt to do this from internal x509
certificate verification procedures did not return the correct value
for certificates using a weak hash.  Reported by Daniel Kahn Gillmor
<dkg@fifthhorseman.net> in
<http://thread.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3332>,
debugged and patch by Tomas Mraz <tmraz@redhat.com> and Daniel Kahn
Gillmor <dkg@fifthhorseman.net>.

** libgnutls: Fix chain verification for chains that ends with RSA-MD2 CAs.
Reported by Michael Kiefer <Michael-Kiefer@web.de> in
<https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=507633> forwarded by
Andreas Metzler <ametzler@downhill.at.eu.org> in
<http://thread.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/3309>.

** libgnutls: Fix crash in X.509 validation code for self-signed certificates.
The patch to fix the security problem GNUTLS-SA-2008-3 introduced a
problem for certificate chains that contained just one self-signed
certificate.  Reported by Michael Meskes <meskes@debian.org> in
<https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=505279>.

** libgnutls: Fix X.509 certificate chain validation error. [GNUTLS-SA-2008-3]
The flaw makes it possible for man in the middle attackers (i.e.,
active attackers) to assume any name and trick GnuTLS clients into
trusting that name.  Thanks for report and analysis from Martin von
Gagern <Martin.vGagern@gmx.net>.  [CVE-2008-4989]

Any updates with more details about this vulnerability will be added
to <https://www.gnu.org/software/gnutls/security.html>

** libgnutls: Fix buffer overrun in gnutls_x509_crt_list_import.
Report and patch by Jonathan Manktelow.

** libgnutls: Avoid use of non-thread safe strerror.

** API and ABI modifications:
No changes since last version.

* Version 2.4.2 (released 2008-09-15)

** libgnutls: Don't crash when gnutls_credentials_set is called twice.

** libgnutls: Corrected memory leak in X.509 functions.
Thanks to Colin Leroy <colin@colino.net>.

** libgnutls: Fix compile error with Sun CC.

** gnutls-cli.1: Document all new parameters.
Thanks to James Westby <jw+debian@jameswestby.net>.

** tests/openssl: initialize gnutls before use.
Fixes crash with libgcrypt 1.4.2.  Reported by Ludovic Courtes
<ludovic.courtes@laas.fr>.

** doc/: Fix texinfo markup for old texinfo versions.

** Included copy of libtasn1 is upgraded to version 1.5.

** API and ABI modifications:
No changes since last version.

* Version 2.4.1 (released 2008-06-30)

** libgnutls: Fix local crash in gnutls_handshake.  [GNUTLS-SA-2008-2]
If the gnutls_handshake function is called for a normal session, which
can happen for re-handshakes, the library would crash because it tried
to hash some data using a libgcrypt handle that had been deallocated.
Report and tiny patch from Tomas Mraz <tmraz@redhat.com>.  Any updates
with more details about this vulnerability will be added to
<https://www.gnu.org/software/gnutls/security.html>

** libgnutls: Fix memory leaks when doing a re-handshake.
Reported by Sam Varshavchik <mrsam@courier-mta.com> in
<http://permalink.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/2928>.

** Fix compiler warnings.
Reported by Massimo Gaspari <massimo.gaspari@alice.it> in
<http://thread.gmane.org/gmane.network.gnutls.general/1281>.

** Fix ordering of -I's to avoid opencdk.h conflict with system headers.
Reported by Roman Bogorodskiy <novel@FreeBSD.org> in
<http://thread.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/2930>.

** srptool: Fix a problem where --verify check does not succeed.
Report and tiny patch by Matthias Koenig <mkoenig@suse.de> in
<http://permalink.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/2944>.

** API and ABI modifications:
No changes since last version.

* Version 2.4.0 (released 2008-06-19)

** Major changes compared to the v2.2 branch:

*** The OpenPGP sub-system has been improved and now supports subkeys.

*** The PSK sub-system has been improved and now supports password
*** derivation and PSK identity hints.
The password derivation algorithms support is documented in
draft-ietf-netconf-tls-02.txt.

*** The certtool --inder and --outder has been replaced by --inraw and --outraw.
This aligns terminology with OpenPGP, which doesn't use DER encoding.
The old parameters will continue to work for some time.

*** Certtool now confirm passwords and changes permissions of private key files.

*** The default handshake size limit has been increased to 48kb.
It appears as if some valid handshakes are large due to sending many
CA certificates.  (The earlier limit was 16kb.)

*** LZO compression is now disabled by default.
The main reason is that LZO compression in TLS is not standardized,
but license compatibility issues with minilzo triggered us to make this
decision now.

*** Improvements for cross-compilation to Windows and OpenWRT.

*** The look of the GTK-DOC manual has been improved.
Major developer visible changes compared to the v2.2 branch:

*** Full OpenPGP support is part of libgnutls, licensed under the LGPL.

*** New APIs to access the raw X.509 Subject and Issuer DN's and
*** elements from the certificate credentials structure.
Thanks to Joe Orton.

*** New APIs to improve working with username/passwords and PSK.

*** Names of constants to affect certificate printing changed.
The constants are used for OpenPGP too, which the names didn't
reflect, so the following name change has been made:

            Old name                         New name
     GNUTLS_X509_CRT_FULL            GNUTLS_CRT_PRINT_FULL
     GNUTLS_X509_CRT_ONELINE         GNUTLS_CRT_PRINT_ONELINE
     GNUTLS_X509_CRT_UNSIGNED_FULL   GNUTLS_CRT_PRINT_UNSIGNED_FULL

The old names will be mapped to the new names for some time.

*** The function gnutls_openpgp_privkey_get_id has been renamed to
*** gnutls_openpgp_privkey_get_key_id.
A compatibility mapping exists to avoid breaking API backwards
compatibility.

*** Replaced all uses of alloca with malloc and free.

*** We no longer build with -D_REENTRANT -D_THREAD_SAFE.
We have been unable to find a documented rationale for this practice.

*** Of course, many smaller fixes have been made, see the ChangeLog file.

*** API/ABI changes in GnuTLS 2.4
All OpenPGP related functions have been moved from libgnutls-extra to
libgnutls, and several new functions have been added (see below).
Before making the release, we discussed whether moving functions from
libgnutls-extra to libgnutls would require us to increment the ABI
version, but the general opinion was that this would not be required.
All older functions continue to work the same.  We are open to the
possibility that this decision will lead to problem on some platform,
and if it turns out that the Right Thing should have been to increment
the shared library version, we would need to release an update within
the 2.4.x branch that increments the shared library version.

This release adds the following functions:

  gnutls_psk_client_get_hint
  gnutls_psk_set_server_credentials_hint
  gnutls_psk_netconf_derive_key

    Used to get/set the PSK identity hint, and derive PSK keys from
    passwords a'la netconf.

  gnutls_x509_dn_deinit
  gnutls_x509_dn_export
  gnutls_x509_dn_import
  gnutls_x509_dn_init

    Used to handle X.509 Certificate DN's directly.

  gnutls_hex2bin

    Converts a data buffer to hex.  Useful for handling PSK/SRP shared
    secrets.

  gnutls_certificate_get_x509_cas
  gnutls_certificate_get_x509_crls
  gnutls_certificate_get_openpgp_keyring

    Functions for direct access to credential elements.

  gnutls_openpgp_crt_get_auth_subkey
  gnutls_openpgp_crt_get_key_id
  gnutls_openpgp_crt_get_pk_dsa_raw
  gnutls_openpgp_crt_get_pk_rsa_raw
  gnutls_openpgp_crt_get_preferred_key_id
  gnutls_openpgp_crt_get_revoked_status
  gnutls_openpgp_crt_get_subkey_count
  gnutls_openpgp_crt_get_subkey_creation_time
  gnutls_openpgp_crt_get_subkey_expiration_time
  gnutls_openpgp_crt_get_subkey_fingerprint
  gnutls_openpgp_crt_get_subkey_id
  gnutls_openpgp_crt_get_subkey_idx
  gnutls_openpgp_crt_get_subkey_pk_algorithm
  gnutls_openpgp_crt_get_subkey_pk_dsa_raw
  gnutls_openpgp_crt_get_subkey_pk_rsa_raw
  gnutls_openpgp_crt_get_subkey_revoked_status
  gnutls_openpgp_crt_get_subkey_usage
  gnutls_openpgp_crt_print
  gnutls_openpgp_crt_set_preferred_key_id
  gnutls_openpgp_keyring_get_crt
  gnutls_openpgp_keyring_get_crt_count
  gnutls_openpgp_privkey_export
  gnutls_openpgp_privkey_export_dsa_raw
  gnutls_openpgp_privkey_export_rsa_raw
  gnutls_openpgp_privkey_export_subkey_dsa_raw
  gnutls_openpgp_privkey_export_subkey_rsa_raw
  gnutls_openpgp_privkey_get_fingerprint
  gnutls_openpgp_privkey_get_key_id
  gnutls_openpgp_privkey_get_pk_algorithm
  gnutls_openpgp_privkey_get_preferred_key_id
  gnutls_openpgp_privkey_get_revoked_status
  gnutls_openpgp_privkey_get_subkey_count
  gnutls_openpgp_privkey_get_subkey_creation_time
  gnutls_openpgp_privkey_get_subkey_expiration_time
  gnutls_openpgp_privkey_get_subkey_fingerprint
  gnutls_openpgp_privkey_get_subkey_id
  gnutls_openpgp_privkey_get_subkey_idx
  gnutls_openpgp_privkey_get_subkey_pk_algorithm
  gnutls_openpgp_privkey_get_subkey_revoked_status
  gnutls_openpgp_privkey_set_preferred_key_id

    New OpenPGP related functions.

    The function gnutls_openpgp_crt_get_key_id is the same as the old
    from gnutls_openpgp_crt_get_id, see above.

The release also adds a new header file 'gnutls/crypto.h', however it
is currently not used.

** libgnutls [OpenPGP]: New APIs to retrieve fingerprint from OpenPGP subkeys.
Contributed by Daniel Kahn Gillmor <dkg-debian.org@fifthhorseman.net>.

** API and ABI modifications:
gnutls_openpgp_crt_get_subkey_fingerprint: ADDED.
gnutls_openpgp_privkey_get_subkey_fingerprint: ADDED.

* Version 2.3.15 (released 2008-06-15)

** Disable the openpgp-certs self-tests.
It results in failure under Wine and doesn't work on Debian buildds.

** API and ABI modifications:
No changes since last version.

* Version 2.3.14 (released 2008-06-11)

** libgnutls [OpenPGP]: Changed OpenPGP verification behaviour.
An OpenPGP certificate is now only considered verified if all the user
IDs are verified.

** Examples: Make C++ example compile.
Earlier it may have failed with an unresolved reference to strlen.

** Documentation: Doc fix for gnutls_x509_crt_get_extension_oid.
Reported by Sam Varshavchik <mrsam@courier-mta.com>.

** API and ABI modifications:
No changes since last version.

* Version 2.3.13 (released 2008-06-07)

** libgnutls [OpenPGP]: Make OpenPGP handshakes work again.

** doc/: Add psktool to info index.  Some minor cleanups.

** tests/: Added non-forking TLS handshake test, see tests/mini.c.

** tests/: Added libgcrypt.supp which can be used with valgrind.
The file suppresses the known libgcrypt memory leaks, so they aren't
printed when you run valgrind on the gnutls self-tests.  Use it as
follows: valgrind --suppressions=libgcrypt.supp ./x509self or add
'--suppressions=/home/you/src/gnutls/tests/libgcrypt.supp' to your
~/.valgrindrc file.

** tests/: Reduce amount of debugging output by default.
Use --verbose for each test to get the full output.

** tests/: Fix memory leaks in several self-tests.
None of the self tests should be leaking memory when running valgrind
or similar tools.  (Known exceptions are dhepskself, pskself, and
set_pkcs12_cred, which appear likely to be due to memory leaks in the
library.)

** API and ABI modifications:
No changes since last version.

* Version 2.3.12 (released 2008-06-04)

** Merge gnutls_with_netconf branch.

*** libgnutls [PSK]: New API to retrieve PSK identity hint in client.
The function is gnutls_psk_client_get_hint.

*** libgnutls [PSK]: New API to set PSK identity hint in server.
The function is gnutls_psk_set_server_credentials_hint.

*** libgnutls [PSK]: Support server key exchange with PSK identity hint.
In the client, the message is parsed and the application can use
gnutls_psk_client_get_hint to retrieve the hint.  In the server, the
message is sent if the application has specified a PSK identity hint
using gnutls_psk_set_server_credentials_hint.

*** libgnutls [PSK]: Support Netconf PSK key derivation.
The function gnutls_psk_netconf_derive_key supports the PSK key
derivation as specified in draft-ietf-netconf-tls-02.txt.  New self
test netconf-psk.c.

*** psktool: Support new --netconf-hint to generate PSK key from password.
Uses the Netconf algorithm to derive PSK key from password.

*** gnutls-serv: Support new --pskhint parameter to set PSK identity hint.

*** gnutls-cli: Always support PSK modes, through a callback.
The callback will derive a PSK key using Netconf algorithm.  It will
print the PSK identity hint to help the user.

*** New PSK example client and server.
See doc/examples/ex-client-psk.c and doc/examples/ex-serv-psk.c.

** libgnutls: Fix gnutls_x509_crl_set_version on arm platforms.
The code didn't work properly on platforms where 'char' is unsigned,
when you set version 0.  Reported by Laurence Withers
<l@lwithers.me.uk> in
<http://permalink.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/2825>.

** libgnutls-openssl: added RAND_pseudo_bytes API.
Patch from Robert Millan <rmh@aybabtu.com>.

** API and ABI modifications:
RAND_pseudo_bytes: ADDED to libgnutls-openssl.
gnutls_psk_client_get_hint: ADDED.
gnutls_psk_set_server_credentials_hint: ADDED.
gnutls_psk_netconf_derive_key: ADDED

* Version 2.3.11 (released 2008-05-20)

** Fix flaw in fix for GNUTLS-SA-2008-1-3.
The flaw would result in incorrectly terminated sessions with the
error "Decryption has failed" when the server sends a small packet
(typically when the session is closed).  Reported by Andreas Metzler
<ametzler@downhill.at.eu.org> in
<http://permalink.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/2807>.

** Don't use gnulib headers when building C++ library.
Fixes builds under Windows.

** Make umask a requirement.
We don't know of any system that lacks it, even GNU CoreUtils use it
unconditionally.

** Update gnulib files.
Fixes a problem where it pulled in a replacement for memcmp under
MinGW, which caused the C++ example to fail to build.

** API and ABI modifications:
No changes since last version.

* Version 2.3.10 (released 2008-05-19)

** Added wide wildcard hostname matching.
Tiny patch by Jean-Philippe Garcia Ballester.

** Fix three security vulnerabilities.  [GNUTLS-SA-2008-1]
Thanks to CERT-FI for finding the bugs and providing detailed reports,
which allowed the bugs to be reproduced and fixed easily.  Patches
developed by Simon Josefsson and Nikos Mavrogiannopoulos.  Any updates
with more details about these vulnerabilities will be added to
<https://www.gnu.org/software/gnutls/security.html>

*** [GNUTLS-SA-2008-1-1]
*** libgnutls: Fix crash when sending invalid server name.
The crash can be triggered remotely before authentication, which can
lead to a Daniel of Service attack to disable the server.  The bug
cause gnutls to store more session resumption data than what was
allocated for, thus overwriting unallocated memory.

*** [GNUTLS-SA-2008-1-2]
*** libgnutls: Fix crash when sending repeated client hellos.
The crash can be triggered remotely before authentication, which can
lead to a Daniel of Service attack to disable the server.  The bug
triggers a null-pointer dereference.

*** [GNUTLS-SA-2008-1-3]
*** libgnutls: Fix crash in cipher padding decoding for invalid record lengths.
The crash can be triggered remotely before authentication, which can
lead to a Daniel of Service attack to disable the server.  The bug
cause gnutls to read memory beyond the end of the received record.

** libgnutlsxx: Updated API according to patches from Eduardo
Villanueva Che (discussion at
<https://lists.gnu.org/archive/html/gnutls-devel/2007-02/msg00017.html>)

** Use umask to restrict permissions to owner before creating a file.

** API and ABI modifications:
No changes since last version.

* Version 2.3.9 (released 2008-05-16)

** libgnutls: Fix build failures if SRP/OpenPGP is disabled.
Based on report and tiny patches from
<jared.jennings.ctr@eglin.af.mil>, see
<https://savannah.gnu.org/support/index.php?106342>.

** libgnutls: Translation fixes.

** gnutls-cli: Fix so that PSK authentication works.
Also improve manual to give example for gnutls-cli PSK authentication.

** certtool: Encrypting a private key now require a confirmed password.
Before './certtool -k -8' would merely ask for a password once.
Reported by Daniel 'NebuchadnezzaR' Dehennin
<nebuchadnezzar@asgardr.info> see
<https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=364287>.

** certtool: When writing private keys to files, change permissions of file.
Now the file which the private key is saved to is chmod'ed 0600.
Reported by martin f krafft <madduck@debian.org> see
<https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=373169>.

** guile: Fix -fgnu89-inline test.

** Removed --enable-profile-mode.
The code linked gnutls with the libfc project (Function Check) which
appears to have been stalled since around 2002.

** Clean up header file checks by ./configure.

** Update of gnulib files.

** API and ABI modifications:
No changes since last version.

* Version 2.3.8 (released 2008-04-29)

** libgnutls: Increase default handshake packet size limit to 48kb.
The old limit was 16kb and some servers send huge list of trusted CAs,
thus running into the limit.  FYI, applications can further increase
this limit using gnutls_handshake_set_max_packet_length.  Thanks to
Marc Haber <mh+debian-bugs@zugschlus.de> and "Marc F. Clemente"
<marc@mclemente.net> for reporting and providing test servers.

** libgnutls: Add new error code: GNUTLS_E_HANDSHAKE_TOO_LARGE
Returned when the handshake data size is too large.  Before
GNUTLS_E_MEMORY_ERROR was used, which could be confused with other
error situations.

** libgnutls: Hide definitions in crypto.h.
We have decided that the APIs defined in crypto.h are not stable
enough for v2.4, so don't use any of those functions.

** gnutls-cli: exit when hostname doesn't match certificate.
Use --insecure to avoid hostname comparison.

** certtool: --inder and --outder replaced by --inraw and --outraw.
The reason is to align terminology with OpenPGP, which doesn't use
DER.  The old parameters will continue to work for some time.

** doc: Add section 'Index of new symbols in 2.4.0' to the GTK-DOC manual.

** doc: Many cosmetic fixes, to silence (most) gtk-doc warnings.

** Mingw32: Revert libgcrypt vasprintf work-around added in last release.
Use libgcrypt 1.4.1 or later when building on MinGW32, it removes the
vasprintf symbol from the libgcrypt library which caused problems.

** Update of gnulib files.

** tests: New self-test of crypto.h RNG code tests/crypto_rng.

** API and ABI modifications:
GNUTLS_E_HANDSHAKE_TOO_LARGE: ADDED.

* Version 2.3.7 (released 2008-04-21)

** opencdk now properly sets the key usage bits into openpgp keys.

** gnutls-cli: Fix crash on TLS handshake failures.
Reported by "Marc F. Clemente" <marc@mclemente.net> in Debian BTS #466477.
This is similar to <https://bugs.debian.org/429183>.

** certtool: with --generate-request and newly generated keys, print the key.

** Build fixes for MinGW.
Missing rpl_fseeko symbol in lib/opencdk/.  Better checks for linking
with -lws2_32 when needed.  Use ASCII only isprint() when printing
X.509 certificate information, to avoid non-ASCII but printable
characters.  Thanks to Massimo Gaspari <massimo.gaspari@alice.it> for
reports.

** Update internal copy of libtasn1 to version 1.4.

** API and ABI modifications:
No changes since last version.

* Version 2.3.6 (released 2008-04-17)

** Make gnutls_x509_crq_sign2 set certificate request version if not set.
** Improve documentation for gnutls_x509_crq_sign2.
Based on report from "John Brooks" <aspecialj@gmail.com> in
<http://permalink.gmane.org/gmane.network.gnutls.general/1154>.

** tests/pathlen: run diff without parameters to improve portability.
Based on HPUX build hints in
<http://hpux.cs.utah.edu/hppd/cgi-bin/wwwtar?/hpux/Gnu/gnutls-2.3.4/gnutls-2.3.4-src-11.11.tar.gz+gnutls-2.3.4/HPUX.Install+text>.

** Don't use %e specifier with strftime, it doesn't work under Windows.
Reported by Massimo Gaspari <massimo.gaspari@alice.it> in
<http://permalink.gmane.org/gmane.network.gnutls.general/1170>.

** Remove all uses of gnutls_alloca/gnutls_afree.
Use normal gnutls_malloc instead.  One reason is increased portability
to Windows, the other is that several of the uses may be unsafe
because the size of data allocated could be large.  Reported by
Massimo Gaspari <massimo.gaspari@alice.it> in
<http://permalink.gmane.org/gmane.network.gnutls.general/1170>.

** Build Guile code with -fgnu89-inline only when supported.
Reported by Kris Karas <ktk@enterprise.bidmc.harvard.edu> in
<http://permalink.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/2708>.

** Several GTK-DOC related fixes.

** Clean up OpenCDK related code.
GnuTLS now requires its internal OpenCDK code rather than the external
GPL library OpenCDK.  Unfortunately, we don't have resources to
maintain an external library (help welcome).

** API and ABI modifications:
No changes since last version.

* Version 2.3.5 (released 2008-04-14)

** Build fix for MinGW and --disable-shared.
Reported by Massimo Gaspari <massimo.gaspari@alice.it> in
<http://permalink.gmane.org/gmane.network.gnutls.general/1145>.

** Document how to generate CRLs.
Suggested by "Rainer Gerhards" <rgerhards@gmail.com>.

** Documented the --priority option to gnutls-cli and gnutls-serv.

** Several minor fixes in the OpenPGP interface.
Thanks to Daniel Kahn Gillmor.

** Fix fopen file descriptor leak in PSK server code.
Thanks to Laurence Withers <l@lwithers.me.uk>, see
<https://lists.gnu.org/archive/html/gnutls-devel/2008-04/msg00002.html>.

** Translations files not stored directly in git to avoid merge conflicts.

** New APIs to let applications replace the RNG used.
Update all RNG callers in the code to use the new interface.

** Guile code now built with -fgnu89-inline to fix inline semantic problem.

** Update gnulib files.

** API and ABI modifications:
gnutls_crypto_rnd_register: ADDED
gnutls_rnd_level_t: ADDED
GNUTLS_RND_KEY: ADDED, gnutls_rnd_level_t member
GNUTLS_RND_RANDOM: ADDED, gnutls_rnd_level_t member
GNUTLS_RND_NONCE: ADDED, gnutls_rnd_level_t member
gnutls_crypto_rnd_st: ADDED
GNUTLS_DIG_SHA224: ADDED
GNUTLS_SIGN_RSA_SHA224: ADDED
gnutls_openpgp_crt_get_auth_subkey: MODIFIED

* Version 2.3.4 (released 2008-03-19)

** Finish renaming of gnutls_certificate_export_x509_cas etc.
They weren't renamed in the public header file.

** Added functions to register a cipher/mac/digest. This allows to
override the included ones.

** Fix a bunch of compiler warnings.

** API and ABI modifications:
gnutls_crypto_cipher_st: ADDED
gnutls_crypto_mac_st: ADDED
gnutls_crypto_digest_st: ADDED
gnutls_crypto_cipher_register: ADDED
gnutls_crypto_mac_register: ADDED
gnutls_crypto_digest_register: ADDED
GNUTLS_E_CRYPTO_ALREADY_REGISTERED: ADDED

* Version 2.3.3 (released 2008-03-10)

** Fix build failure in libextra/gnutls_extra.c that needed opencdk.h.
Reported by Roman Bogorodskiy <novel@FreeBSD.org>.

** No longer compiled using -D_REENTRANT -D_THREAD_SAFE.
We could not find any modern justification for enabling these flags by
default.  If you know of some platform that needs one of the flags to
work properly, please let us know.  (Actually introduced in v2.3.0 but
not documented until now.)

** Importing many CA certificates are now considerably faster.
This affect gnutls_certificate_set_x509_trust_mem,
gnutls_certificate_set_x509_trust, and
gnutls_certificate_set_x509_trust_file.  The complexity was reduced
from O(2*n^2) to O(n).  When adding 206 files containing 408
certificates, using gnutls_certificate_set_x509_trust_file, the time
dropped from 40 seconds to 0.3 seconds.  Thanks to Edgar Fuß for code
to trigger the problem.  See also
<https://blog.josefsson.org/2008/02/27/real-world-performance-tuning-with-callgrind/>.

** Clarify documentation for gnutls_x509_crt_set_subject_alternative_name
** to be explicit that it takes zero terminated data.

** gnutls-cli --print-cert now print PKCS#3 format Diffie-Hellman parameters.

** Documentation fixes for the GTK-DOC manual.

** Fix compilation error related to __FUNCTION__ on some systems.
Reported by Tim Mooney, see
<https://savannah.gnu.org/support/?106267>.

** Updated translations.

** Update gnulib files.

** API and ABI modifications:
gnutls_hex2bin: MODIFIED, uses size_t instead of int for string length,
		and char* instead of void* for output buffer.

* Version 2.3.2 (released 2008-02-26)

** Fix srcdir!=objdir failure in openpgpself test.

** Improved API documentation output from GTK-DOC.

** Added gnutls_x509_dn_export(). Patch by Joe Orton.

** Renamed gnutls_certificate_export_x509_cas and friends.
See <https://lists.gnu.org/archive/html/gnutls-devel/2008-02/msg00043.html>.

** Internal header files cleanup.

** API and ABI modifications:
gnutls_certificate_export_x509_cas: RENAMED to gnutls_certificate_get_x509_cas
gnutls_certificate_export_x509_crls: RENAMED to gnutls_certificate_get_x509_crls
gnutls_certificate_export_openpgp_keyring: RENAMED to gnutls_certificate_get_openpgp_keyring
gnutls_x509_dn_export: ADDED

* Version 2.3.1 (released 2008-02-21)

** OpenPGP support merged into libgnutls and is now licensed under LGPL.
The included copy of OpenCDK has been stripped down and re-licensed
under the LGPL.

** Cipher priority string handling now handle strings that starts with NULL.
Thanks to Laurence Withers <l@lwithers.me.uk>.

** gnutls-cli: When -d is used, also prints RNG information from libgcrypt.

** Corrected memory leaks in session resuming and DHE ciphersuites. Reported
by Daniel Stenberg.

** Increased the default certificate verification chain limits and allowed
for checks without limitation.

** Corrected the behaviour of gnutls_x509_crt_get_subject_alt_name()
and gnutls_x509_crt_get_subject_alt_name() to not null terminate binary
strings and return the proper size.

** Add section 'On Record Padding' to the manual.
This collects all problems related to record padding with
Nokia/Sony-Ericsson phones that we know about.

** Several improvements in the OpenPGP authentication.
Now subkeys can be used for authentication, according to
draft-mavrogiannopoulos-rfc5081bis-00.txt.

** certtool can print information on OpenPGP certificates and keys.

** Added gnutls_x509_dn_import/init/deinit() to access raw DER DN.
Patch by Joe Orton.

** Added gnutls_certificate_export_x509_cas and other functions to
export elements from the certificate credentials structure.  Based on
suggestion from Joe Orton.

** Doc fixes.
Clarify that srp_base64 is not the same as normal base64.

** Fix non-portable use of brace expansion in makefiles.

** API and ABI modifications:
gnutls_certificate_export_x509_cas: ADDED
gnutls_certificate_export_x509_crls: ADDED
gnutls_certificate_export_openpgp_keyring: ADDED
gnutls_openpgp_keyid_t: ADDED, instead of hard-coded 'unsigned char[8]'.
gnutls_openpgp_crt_get_key_id: ADDED, obsoletes gnutls_openpgp_crt_get_id.
gnutls_openpgp_crt_get_revoked_status: ADDED
gnutls_openpgp_crt_get_subkey_count: ADDED
gnutls_openpgp_crt_get_subkey_idx: ADDED
gnutls_openpgp_crt_get_subkey_revoked_status: ADDED
gnutls_openpgp_crt_get_subkey_pk_algorithm: ADDED
gnutls_openpgp_crt_get_subkey_creation_time: ADDED
gnutls_openpgp_crt_get_subkey_expiration_time: ADDED
gnutls_openpgp_crt_get_subkey_id: ADDED
gnutls_openpgp_crt_get_subkey_usage: ADDED
gnutls_openpgp_privkey_get_fingerprint: ADDED
gnutls_openpgp_privkey_get_key_id: ADDED
gnutls_openpgp_privkey_get_subkey_count: ADDED
gnutls_openpgp_privkey_get_subkey_idx: ADDED
gnutls_openpgp_privkey_get_subkey_revoked_status: ADDED
gnutls_openpgp_privkey_get_revoked_status: ADDED
gnutls_openpgp_privkey_get_subkey_pk_algorithm: ADDED
gnutls_openpgp_privkey_get_subkey_expiration_time: ADDED
gnutls_openpgp_privkey_get_subkey_id: ADDED
gnutls_openpgp_privkey_get_subkey_creation_time: ADDED
gnutls_openpgp_crt_get_subkey_pk_dsa_raw: ADDED
gnutls_openpgp_crt_get_subkey_pk_rsa_raw: ADDED
gnutls_openpgp_crt_get_pk_dsa_raw: ADDED
gnutls_openpgp_crt_get_pk_rsa_raw: ADDED
gnutls_openpgp_privkey_export_subkey_dsa_raw: ADDED
gnutls_openpgp_privkey_export_subkey_rsa_raw: ADDED
gnutls_openpgp_privkey_export_dsa_raw: ADDED
gnutls_openpgp_privkey_export_rsa_raw: ADDED
gnutls_openpgp_privkey_export: ADDED
gnutls_certificate_set_openpgp_key_file2: ADDED
gnutls_certificate_set_openpgp_key_mem2: ADDED
gnutls_x509_dn_init: ADDED
gnutls_x509_dn_import: ADDED
gnutls_x509_dn_deinit: ADDED
GNUTLS_E_OPENPGP_SUBKEY_ERROR: ADDED
gnutls_hex2bin: ADDED
GNUTLS_CRT_PRINT_FULL: ADDED, same as old GNUTLS_X509_CRT_FULL.
GNUTLS_CRT_PRINT_ONELINE: ADDED, same as old GNUTLS_X509_CRT_ONELINE.
GNUTLS_CRT_PRINT_UNSIGNED_FULL: ADDED, same as
                                old GNUTLS_X509_CRT_UNSIGNED_FULL.

* Version 2.3.0 (released 2008-01-08)

** LZO compression is now disabled by default.
The reason is that LZO compression is not standardized in TLS.  If you
wish to experiment with it, you will have to supply --with-lzo when
invoking ./configure.  The internal copy of minilzo is no longer
included with GnuTLS, so you will need to install liblzo or liblzo2 on
your system to have --with-lzo to be effective.

** More than one server name field is now sent to the server properly.
Thanks to mark.phillips@virgin.net.

** Fixes the post_client_hello_function(). The extensions are now parsed
in a callback friendly way.

** Fix for certificate selection in servers with certificate callbacks.

** Updated translations.

** Update gnulib files.

** API and ABI modifications:
No changes since last version.

* Version 2.2.5 (released 2008-05-19)

** Fix flaw in fix for GNUTLS-SA-2008-1-3.
The flaw would result in incorrectly terminated sessions with the
error "Decryption has failed" when the server sends a small packet
(typically when the session is closed).  Reported by Andreas Metzler
<ametzler@downhill.at.eu.org> in
<http://permalink.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/2807>.

** API and ABI modifications:
No changes since last version.

* Version 2.2.4 (released 2008-05-19)

** Fix three security vulnerabilities.  [GNUTLS-SA-2008-1]
Thanks to CERT-FI for finding the bugs and providing detailed reports,
which allowed the bugs to be reproduced and fixed easily.  Patches
developed by Simon Josefsson and Nikos Mavrogiannopoulos.  Any updates
with more details about these vulnerabilities will be added to
<https://www.gnu.org/software/gnutls/security.html>

*** [GNUTLS-SA-2008-1-1]
*** libgnutls: Fix crash when sending invalid server name.
The crash can be triggered remotely before authentication, which can
lead to a Daniel of Service attack to disable the server.  The bug
cause gnutls to store more session resumption data than what was
allocated for, thus overwriting unallocated memory.

*** [GNUTLS-SA-2008-1-2]
*** libgnutls: Fix crash when sending repeated client hellos.
The crash can be triggered remotely before authentication, which can
lead to a Daniel of Service attack to disable the server.  The bug
triggers a null-pointer dereference.

*** [GNUTLS-SA-2008-1-3]
*** libgnutls: Fix crash in cipher padding decoding for invalid record lengths.
The crash can be triggered remotely before authentication, which can
lead to a Daniel of Service attack to disable the server.  The bug
cause gnutls to read memory beyond the end of the received record.

** API and ABI modifications:
No changes since last version.

* Version 2.2.3 (released 2008-05-06)

** Increase default handshake packet size limit to 48kb.
The old limit was 16kb and some servers send huge list of trusted CAs,
thus running into the limit.  FYI, applications can further increase
this limit using gnutls_handshake_set_max_packet_length.  Thanks to
Marc Haber <mh+debian-bugs@zugschlus.de> and "Marc F. Clemente"
<marc@mclemente.net> for reporting and providing test servers.

** Fix compilation error related to __FUNCTION__ on some systems.
Reported by Tim Mooney, see
<https://savannah.gnu.org/support/?106267>.

** Documented the --priority option to gnutls-cli and gnutls-serv.

** Fix fopen file descriptor leak in PSK server code.
Thanks to Laurence Withers <l@lwithers.me.uk>, see
<https://lists.gnu.org/archive/html/gnutls-devel/2008-04/msg00002.html>.

** Build Guile code with -fgnu89-inline only when supported.
Reported by Kris Karas <ktk@enterprise.bidmc.harvard.edu> in
<http://permalink.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/2708>.

** Make Camellia encryption work.
Reported by Yoshisato YANAGISAWA <yanagisawa@csg.is.titech.ac.jp> in
<http://thread.gmane.org/gmane.comp.encryption.gpg.gnutls.devel/2746>.

** API and ABI modifications:
No changes since last version.

* Version 2.2.2 (released 2008-02-21)

** Cipher priority string handling now handle strings that starts with NULL.
Thanks to Laurence Withers <l@lwithers.me.uk>.

** Corrected memory leaks in session resuming and DHE ciphersuites. Reported
by Daniel Stenberg.

** Increased the default certificate verification chain limits and allowed
for checks without limitation.

** Corrected the behaviour of gnutls_x509_crt_get_subject_alt_name()
and gnutls_x509_crt_get_subject_alt_name() to not null terminate binary
strings and return the proper size.

** API and ABI modifications:
No changes since last version.

* Version 2.2.1 (released 2008-01-17)

** Prevent linking libextra against previously installed libgnutls.
Tiny patch from "Alon Bar-Lev" <alon.barlev@gmail.com>, see
<https://bugs.gentoo.org/show_bug.cgi?id=202269>.

** Fixes the post_client_hello_function(). The extensions are now parsed
in a callback friendly way.

** Fix for certificate selection in servers with certificate callbacks.

** API and ABI modifications:
No changes since last version.

* Version 2.2.0 (released 2007-12-14)

** Update internal copy of libtasn1 to version 1.2.

** Certtool --verify-chain now handle inputs larger than 64kb.
This fixes the self-test "rsa-md5-collision" under MinGW+Wine with
recent versions of libgcrypt.  The problem was that Wine with the
libgcrypt RNG generates huge amounts of debugging output.

** Translation updates.
Added Dutch translation.  Updated Polish and Swedish translation.

** Major changes compared to the v2.0 branch:

*** SRP support aligned with newly published RFC 5054.

*** OpenPGP support aligned with newly published RFC 5081.

*** Support for DSA2 keys.

*** Support for Camellia cipher.

*** Support for Opaque PRF Input extension.

*** PKCS#8 parser now handle DSA keys.

*** Change from GPLv2 to GPLv3 for command-line tools, libgnutls-extra, etc.
Notice that liblzo2 2.02 is licensed under GPLv2 only.  Earlier
versions, such as 2.01 which is included with GnuTLS, is available
under GPLv2 or later.  If this incompatibility causes problems, we
recommend you to disable LZO using --without-lzo.  LZO compression is
not a standard TLS compression algorithm, so the impact should be
minimal.

*** Functions for disabling record protocol padding.
Works around bugs on Nokia/Ericsson phones.

*** New functions gnutls_priority_set() for setting cipher priorities easily.
Priorities like "COMPAT" also enables other work arounds, such as
disabling padding.

*** Other minor improvements and bug fixes.

** Backwards incompatible API/ABI changes in GnuTLS 2.2
To adapt to changes in the TLS extension specifications for OpenPGP
and SRP, the GnuTLS API had to be modified.  This means breaking the
API and ABI backwards compatibility.  That is something we try to
avoid unless it is necessary.  We decided to also remove the already
deprecated stub functions for X.509 to XML conversion and TLS
authorization (see below) when we had the opportunity.

Generally, most applications does not need to be modified.  Just
re-compile them against the latest GnuTLS release, and it should work
fine.

Applications that use the OpenPGP or SRP features needs to be
modified.  Below is a list of the modified APIs and discussion of what
the minimal things you need to modify in your application to make it
work with GnuTLS 2.2.

Note that GnuTLS 2.2 also introduces new APIs -- such as
gnutls_set_priority() that is superior to
gnutls_set_default_priority() -- that you may want to start using.
However, using those new APIs is not required to use GnuTLS 2.2 since
the old functions continue are still supported.  This text only
discuss what you minimally have to modify.

*** XML related changes
The function `gnutls_x509_crt_to_xml' has been removed.  It has been
deprecated and only returned an error code since GnuTLS version
1.2.11.  Nobody has complained, so users doesn't seem to miss the
functionality.  We don't know of any other library to convert X.509
certificates into XML format, but we decided (long ago) that GnuTLS
isn't the right place for this kind of functionality.  If you want
help to find some other library to use here, please explain and
discuss your use case on help-gnutls@gnu.org.

*** TLS Authorization related changes
Everything related to TLS authorizations have been removed, they were
only stub functions that returned an error code:

 GNUTLS_SUPPLEMENTAL_AUTHZ_DATA
 gnutls_authz_data_format_type_t
 gnutls_authz_recv_callback_func
 gnutls_authz_send_callback_func
 gnutls_authz_enable
 gnutls_authz_send_x509_attr_cert
 gnutls_authz_send_saml_assertion
 gnutls_authz_send_x509_attr_cert_url
 gnutls_authz_send_saml_assertion_url

*** SRP related changes
The callback gnutls_srp_client_credentials_function has a new
prototype, and its semantic has changed.  You need to rewrite the
callback, see the updated function documentation and SRP example code
(doc/examples/ex-client-srp.c and doc/examples/ex-serv-srp.c) for more
information.

The alert codes GNUTLS_A_MISSING_SRP_USERNAME and
GNUTLS_A_UNKNOWN_SRP_USERNAME are no longer used by the SRP
specification, instead the GNUTLS_A_UNKNOWN_PSK_IDENTITY alert is
used.  There are #define's to map the old names to the new.  You may
run into problems if you have a switch-case with cases for both SRP
alerts, since they are now mapped to the same value.  The solution is
to drop the SRP alerts from such switch cases, as they are now
deprecated in favor of GNUTLS_A_UNKNOWN_PSK_IDENTITY.

*** OpenPGP related changes
The function `gnutls_certificate_set_openpgp_keyserver' have been
removed.  There is no replacement functionality inside GnuTLS.  If you
need keyserver functionality, consider using the GnuPG tools.

All functions, types, and error codes related to OpenPGP trustdb
format have been removed.  The trustdb format is a non-standard
GnuPG-specific format, and we recommend you to use key rings instead.
The following have been removed:

 gnutls_certificate_set_openpgp_trustdb
 gnutls_openpgp_trustdb_init
 gnutls_openpgp_trustdb_deinit
 gnutls_openpgp_trustdb_import
 gnutls_openpgp_key_verify_trustdb
 gnutls_openpgp_trustdb_t
 GNUTLS_E_OPENPGP_TRUSTDB_VERSION_UNSUPPORTED

The following functions has an added parameter of the (new) type
`gnutls_openpgp_crt_fmt_t'.  The type specify the format of the data
(binary or base64).  The functions are:
 gnutls_certificate_set_openpgp_key_file
 gnutls_certificate_set_openpgp_key_mem
 gnutls_certificate_set_openpgp_keyring_mem
 gnutls_certificate_set_openpgp_keyring_file

To improve terminology and align with the X.509 interface, some
functions have been renamed.  Compatibility mappings exists.  The old
and new names of the affected functions and types are:

        Old name                                New name
 gnutls_openpgp_key_t                    gnutls_openpgp_crt_t
 gnutls_openpgp_key_fmt_t                gnutls_openpgp_crt_fmt_t
 gnutls_openpgp_key_status_t             gnutls_openpgp_crt_status_t
 GNUTLS_OPENPGP_KEY                      GNUTLS_OPENPGP_CERT
 GNUTLS_OPENPGP_KEY_FINGERPRINT          GNUTLS_OPENPGP_CERT_FINGERPRINT
 gnutls_openpgp_key_init                 gnutls_openpgp_crt_init
 gnutls_openpgp_key_deinit               gnutls_openpgp_crt_deinit
 gnutls_openpgp_key_import               gnutls_openpgp_crt_import
 gnutls_openpgp_key_export               gnutls_openpgp_crt_export
 gnutls_openpgp_key_get_key_usage        gnutls_openpgp_crt_get_key_usage
 gnutls_openpgp_key_get_fingerprint      gnutls_openpgp_crt_get_fingerprint
 gnutls_openpgp_key_get_pk_algorithm     gnutls_openpgp_crt_get_pk_algorithm
 gnutls_openpgp_key_get_name             gnutls_openpgp_crt_get_name
 gnutls_openpgp_key_get_version          gnutls_openpgp_crt_get_version
 gnutls_openpgp_key_get_creation_time    gnutls_openpgp_crt_get_creation_time
 gnutls_openpgp_key_get_expiration_time  gnutls_openpgp_crt_get_expiration_time
 gnutls_openpgp_key_get_id               gnutls_openpgp_crt_get_id
 gnutls_openpgp_key_check_hostname       gnutls_openpgp_crt_check_hostname
 gnutls_openpgp_send_key                 gnutls_openpgp_send_cert

** API and ABI modifications:
No changes since last version.

* Version 2.1.8 (released 2007-12-10)

** The GPL version has been changed from version 2 to version 3.
This affects the self-tests, command-line tools, the libgnutls-extra
library, the relevant guile parts, and the build environment.

** Added gnutls_x509_crt_get_subject_alt_name2().

** Corrected a segfault when setting an empty gnutls_priority_t
at gnutls_priority_set().

** Use gettext 0.17 which updates m4/lib-*.m4 macros.
Fixes a problem with spurious -L/usr/lib additions.

** API and ABI modifications:
gnutls_x509_crt_get_subject_alt_name2: ADD.

* Version 2.1.7 (released 2007-11-29)

** PKCS #8 parser can now encode/decode DSA keys.

** Updated gnutls_set_default_priority2() now renamed to
gnutls_priority_set() and gnutls_priority_set_direct() which
accept a string to indicate preferences of ciphersuite parameters.

** gnutls-cli and gnutls-serv now have a --priority option to set
the priority string.

** The gnutls_*_convert_priority() functions were deprecated by
the gnutls_priority_set() and gnutls_priority_set_direct().

** Internal copy of OpenCDK upgraded to version 0.6.6.

** API and ABI modifications:
gnutls_priority_init: ADD.
gnutls_priority_deinit: ADD.
gnutls_priority_set: ADD.
gnutls_priority_set_direct: ADD.
gnutls_set_default_priority2: RENAMED to gnutls_priority_set_direct()
gnutls_mac_convert_priority: REMOVED
gnutls_compression_convert_priority: REMOVED
gnutls_protocol_convert_priority: REMOVED
gnutls_kx_convert_priority: REMOVED
gnutls_cipher_convert_priority: REMOVED
gnutls_certificate_type_convert_priority: REMOVED
gnutls_set_default_priority: UNDEPRECATED
gnutls_set_default_priority_export: UNDEPRECATED

** Undocumented API and ABI modifications earlier in the 2.1.x series:
GNUTLS_CIPHER_UNKNOWN: ADD.
GNUTLS_CIPHER_CAMELLIA_128_CBC: ADD.
GNUTLS_CIPHER_CAMELLIA_256_CBC: ADD.
GNUTLS_KX_UNKNOWN: ADD.
GNUTLS_COMP_UNKNOWN: ADD.
GNUTLS_CRT_UNKNOWN: ADD.
gnutls_mac_get_id: ADD.
gnutls_compression_get_id: ADD.
gnutls_cipher_get_id: ADD.
gnutls_kx_get_id: ADD.
gnutls_protocol_get_id: ADD.
gnutls_certificate_type_get_id: ADD.
gnutls_handshake_post_client_hello_func: ADD.
gnutls_certificate_send_x509_rdn_sequence: ADD prototype to gnutls.h.in.

* Version 2.1.6 (released 2007-11-15)

** Corrected bug in decompression of expanded compression data.

** Added the --to-p8 option to certtool to convert private keys
to PKCS #8 keys.

** Introduced the GNUTLS_E_BASE64_UNEXPECTED_HEADER_ERROR error code.

** gnutls_certificate_set_x509_key_* can now read PKCS #8 unencrypted
private keys.

** Fixed GNUTLS_E_UNKNOWN_ALGORITHM vs GNUTLS_E_UNKNOWN_HASH_ALGORITHM.
During the 2.1.x series the GNUTLS_E_UNKNOWN_HASH_ALGORITHM error code
was renamed to GNUTLS_E_UNKNOWN_ALGORITHM, unfortunately without being
documented.  This caused some problems (e.g., debian #450854).  To
avoid backwards compatibility problems, this release revert this
change, so that GNUTLS_E_UNKNOWN_HASH_ALGORITHM works just like it has
done in GnuTLS 2.0.x and earlier, and add a new error code
GNUTLS_E_UNKNOWN_ALGORITHM.

** Fixes several gtk-doc warnings.

** API and ABI modifications:
GNUTLS_E_UNKNOWN_ALGORITHM: CHANGED.
GNUTLS_E_UNKNOWN_HASH_ALGORITHM: CHANGED.
GNUTLS_E_BASE64_UNEXPECTED_HEADER_ERROR: ADD.

* Version 2.1.5 (released 2007-11-01)

** Fix PKCS#3 parameter export problem.

** Improve certtool queries, they now print the default value.

** Fix ABI version.

** Update gnulib files.

** API and ABI modifications:
No changes since last version.

* Version 2.1.4 (released 2007-10-27)

** Added the --v1 option to certtool, to allow generating X.509
version 1 certificates.

** certtool: Add option --disable-quick-random to enable the old behaviour
of using /dev/random to generate keys.

** Added priority functions that accept strings.

** Added gnutls_set_default_priority2() which accepts a flag to indicate
priorities preferences.

** Added gnutls_record_disable_padding() to allow servers talking to
buggy clients that complain if the TLS 1.0 record protocol padding is
used.

** Introduced gnutls_session_enable_compatibility_mode() to allow enabling
all supported compatibility options (like disabling padding).

** The gnutls_certificate_set_openpgp_* functions were modified to include
the format. This makes the interface consistent with the x509 functions.

** Internal copy of OpenCDK upgraded to version 0.6.5.

** Update gnulib files.

** API and ABI modifications:
gnutls_certificate_set_openpgp_key_mem: MODIFIED
gnutls_certificate_set_openpgp_key_file: MODIFIED
gnutls_certificate_set_openpgp_keyring_mem: MODIFIED
gnutls_certificate_set_openpgp_keyring_file: MODIFIED
gnutls_set_default_priority: DEPRECATED
gnutls_set_default_priority_export: DEPRECATED
gnutls_set_default_priority2: ADDED
gnutls_session_enable_compatibility_mode: ADDED
gnutls_record_disable_padding: ADDED
gnutls_mac_convert_priority: ADDED
gnutls_compression_convert_priority: ADDED
gnutls_protocol_convert_priority: ADDED
gnutls_kx_convert_priority: ADDED
gnutls_cipher_convert_priority: ADDED
gnutls_certificate_type_convert_priority: ADDED
gnutls_openpgp_key_t: RENAMED to gnutls_openpgp_crt_t
gnutls_openpgp_key_status_t: RENAMED to gnutls_openpgp_crt_status_t
gnutls_openpgp_send_key: RENAMED to gnutls_openpgp_send_cert
gnutls_openpgp_key_init: RENAMED to gnutls_openpgp_crt_init
gnutls_openpgp_key_import: RENAMED to gnutls_openpgp_crt_import
gnutls_openpgp_key_export: RENAMED to gnutls_openpgp_crt_export
gnutls_openpgp_key_check_hostname: RENAMED to gnutls_openpgp_crt_check_hostname
gnutls_openpgp_key_get_creation_time: RENAMED to gnutls_openpgp_crt_get_creation_time
gnutls_openpgp_key_get_expiration_time: RENAMED to gnutls_openpgp_crt_get_expiration_time
gnutls_openpgp_key_get_fingerprint: RENAMED to gnutls_openpgp_crt_get_fingerprint
gnutls_openpgp_key_get_version: RENAMED to gnutls_openpgp_crt_get_version
gnutls_openpgp_key_get_pk_algorithm: RENAMED to gnutls_openpgp_crt_get_pk_algorithm
gnutls_openpgp_key_get_name: RENAMED to gnutls_openpgp_crt_get_name
gnutls_openpgp_key_deinit: RENAMED to gnutls_openpgp_crt_deinit
gnutls_openpgp_key_get_id: RENAMED to gnutls_openpgp_crt_get_id
gnutls_openpgp_key_get_key_usage: RENAMED to gnutls_openpgp_crt_get_key_usage
gnutls_openpgp_key_verify_ring: RENAMED to gnutls_openpgp_crt_verify_ring
gnutls_openpgp_key_verify_self: RENAMED to gnutls_openpgp_crt_verify_self

* Version 2.1.3 (released 2007-10-17)

** TLS authorization support removed.
This technique may be patented in the future, and it is not of crucial
importance for the Internet community.  After deliberation we have
concluded that the best thing we can do in this situation is to
encourage society not to adopt this technique.  We have decided to
lead the way with our own actions.

** Re-enabled the 256 bit ciphers in the default priorities.

** Corrected bugs in openpgp key verification using a keyring (both in
gnutls and opencdk)

** API and ABI modifications:
gnutls_certificate_set_openpgp_keyserver: REMOVED
gnutls_authz_data_format_type_t,
gnutls_authz_recv_callback_func,
gnutls_authz_send_callback_func,
gnutls_authz_enable,
gnutls_authz_send_x509_attr_cert,
gnutls_authz_send_saml_assertion,
gnutls_authz_send_x509_attr_cert_url,
gnutls_authz_send_saml_assertion_url: REMOVED.
GNUTLS_SUPPLEMENTAL_USER_MAPPING_DATA: ADDED.  To avoid that the
    gnutls_supplemental_data_format_type_t enum type becomes empty.

* Version 2.1.2 (released 2007-10-14)

** Removed all the trustdb code from openpgp authentication.
We now use only the well-specified keyrings.

** The 256 bit ciphers are not enabled in the default priorities.

** Added support for DSA2 using libgcrypt 1.3.0.

** certtool: Fixed data corruption when using --outder.

** Removed all the xml related stubs and functions.

** Added capability to set a callback after the client hello is received
by the server in order to adjust parameters before the handshake.

** SRP was corrected to adhere to the latest draft (published soon as RFC)

** Corrected bug which did not allow a server to run without supporting
certificates.

** Updated the DN parser which now prints wrongly decoded values as hex
strings.

** certtool: Add option --quick-random.
For generating low security test credentials.

** API and ABI modifications:
gnutls_x509_crt_to_xml: REMOVED
gnutls_openpgp_key_to_xml: REMOVED
gnutls_openpgp_key_verify_trustdb: REMOVED
gnutls_openpgp_trustdb_init: REMOVED
gnutls_openpgp_trustdb_deinit: REMOVED
gnutls_openpgp_trustdb_import: REMOVED
gnutls_certificate_set_openpgp_trustdb: REMOVED
gnutls_srp_client_credentials_function: CHANGED
gnutls_handshake_set_post_client_hello_function: ADDED
gnutls_mac_get_key_size: ADDED
GNUTLS_E_OPENPGP_TRUSTDB_VERSION_UNSUPPORTED: DEPRECATED.
GNUTLS_A_MISSING_SRP_USERNAME: DEPRECATED
GNUTLS_A_UNKNOWN_SRP_USERNAME: DEPRECATED

* Version 2.1.1 (released 2007-09-24)

** Added support for Camellia cipher, thanks to Yoshisato YANAGISAWA.
Camellia is only enabled in GnuTLS if the installed libgcrypt has been
compiled with Camellia support.  See the libgcrypt documentation on
how to enable it.  Unconditionally disable it using the configure
option --disable-camellia.  Fixes #1.

** Properly document in the NEWS file the API change in the last release.

** API and ABI modifications:
No changes since last version.

* Version 2.1.0 (released 2007-09-20)

** Support for draft-rescorla-tls-opaque-prf-input-00.txt.
The support is disabled by default.  Since no value has been allocated
by the IANA for this extension yet, you will need to provide one
yourself by invoking './configure --enable-opaque-prf-input=42'.
Fixes #2.

** Example code: Fix compilation flaw under MinGW.

** API and ABI modifications:
gnutls_oprfi_callback_func: ADD, new typedef function prototype.
gnutls_oprfi_enable_client: ADD, new function.
gnutls_oprfi_enable_server: ADD, new function.

* Version 2.0.4 (released 2007-11-16)

** Corrected bug in decompression of expanded compression data.

** API and ABI modifications:
No changes since last version.

* Version 2.0.3 (released 2007-11-10)

** This version backports several fixes from the 2.1.x branch.

** Fixed PKCS #3 parameter export.

** Added gnutls_record_disable_padding() to allow servers talking to
buggy clients that complain if the TLS 1.0 record protocol padding is
used.

** Introduced gnutls_session_enable_compatibility_mode() to allow enabling
all supported compatibility options (like disabling padding).

** Corrected bug which did not allow a server to run without supporting
certificates.

** API and ABI modifications:
gnutls_session_enable_compatibility_mode: ADDED
gnutls_record_disable_padding: ADDED

* Version 2.0.2 (released 2007-10-17)

** TLS authorization support removed.
This technique may be patented in the future, and it is not of crucial
importance for the Internet community.  After deliberation we have
concluded that the best thing we can do in this situation is to
encourage society not to adopt this technique.  We have decided to
lead the way with our own actions.

** certtool: Fixed data corruption when using --outder.

** Fix configure-time Guile detection.

** API and ABI modifications:
GNUTLS_SUPPLEMENTAL_USER_MAPPING_DATA: ADDED.  To avoid that the
    gnutls_supplemental_data_format_type_t enum type becomes empty.

* Version 2.0.1 (released 2007-09-20)

** New directory doc/credentials/ with test credentials.
This collects the test credentials from the web page and from src/.
The script gnutls-http-serv has also been moved to that directory.

** Update SRP extension type and cipher suite with official IANA values.
This breaks backwards compatibility with SRP in older versions of
GnuTLS, but this is intentional to speed up the adoption of the
official values.  The old values we used were incorrect.

** Guile: Fix `x509-certificate-dn-oid'

** API and ABI modifications:
No changes since last version.

* Version 2.0.0 (released 2007-09-04)

** Included copy of Libtasn1 upgraded to version 1.1.

** Disable building of some examples if anonymous ciphers are disabled.

** Don't build examples for disabled features.

** API and ABI modifications:
No changes since last version.

* Version 1.7.19 (released 2007-08-27)

** Fix gnutls_error_is_fatal so that positive "errors" are non-critical.
This solves connection problems in mutt, see
<https://bugs.debian.org/439640>.

** Update gnulib files.
In particular, the getpass module -- with its dependencies on getline,
getdelim, fseeko etc -- where moved from the lgl/ (used by the core
library) directory to the gl/ directory (only used by the command line
tools).  The reason is that getpass is now only used by the
command-line tools, and reducing the number of gnulib modules linked
to the core library helps portability and reduces size.

** Fix warnings.

** Disable building of PGP examples if PGP is disabled.

** Included copy of OpenCDK upgraded to version 0.6.4.

** API and ABI modifications:
No changes since last version.

* Version 1.7.18 (released 2007-08-16)

** Install images for the info manual.
This has a side effect of renaming the images.  See
<http://thread.gmane.org/gmane.comp.tex.texinfo.bugs/3533> for
discussions on the approach chosen.

** Fix pointer mix to variables of different size.
Patch extracted from
<http://cvs.fedora.redhat.com/viewcvs/devel/gnutls/gnutls-1.6.3-incompat-pointers.patch?rev=1.1&view=auto>.

** Fix warnings during build.
Thanks to Andreas Metzler <ametzler@downhill.at.eu.org>.

** API and ABI modifications:
No changes since last version.

* Version 1.7.17 (released 2007-08-15)

** New functions to perform external signing.
Set the signing callback function (of the gnutls_sign_func prototype)
using the gnutls_sign_callback_set function.  In the callback, you may
find the new functions gnutls_x509_privkey_sign_hash and
gnutls_openpgp_privkey_sign_hash useful.  A new function
gnutls_sign_callback_get is also added, to retrieve the function
pointer.  Thanks to "Alon Bar-Lev" <alon.barlev@gmail.com> for
comments and testing.

** New self test of client and server authenticated X.509 TLS sessions.
See tests/x509self.c and tests/x509signself.c.  The latter also tests
the new external signing callback interface.

** New errors GNUTLS_E_APPLICATION_ERROR_MIN..GNUTLS_E_APPLICATION_ERROR_MAX.
These two actually describe the outer limits of a range of error codes
reserved to the application.  All of the errors are treated as fatal
by the library (it has to since it doesn't know the semantics of the
error codes).  This can be useful in callbacks, to signal some
application-specific error condition, which will usually eventually
cause some gnutls API to return the same error code as the callback,
which then can be inspected by the application.  Note that error codes
are negative.

** gnutls_set_default_priority now disable TLS 1.2 by default.
The RFC is not released yet, and we're approaching a major release so
let's not enable it just yet.

** Fix namespace so that gnutls_*_t is used consistently.
Before, many places in the GnuTLS code used the old deprecated type
names without the '_t' suffix.

** Build fixes for Guile code.
Patch from Ludovic Courtes <ludovic.courtes@laas.fr>.

** More documentation fixes.
In particular, the section headings were modified for casing.  By
Ludovic Courtes <ludovic.courtes@laas.fr>.

** Updated Polish and Swedish translations.
Thanks to Jakub Bogusz <qboosh@pld-linux.org> and Daniel Nylander
<po@danielnylander.se>.

** API and ABI modifications:
gnutls_sign_func: ADD, new type for sign callback.
gnutls_sign_callback_set: ADD, new function to set sign callback.
gnutls_sign_callback_get: ADD, new function to retrieve sign callback.
gnutls_x509_privkey_sign_hash,
gnutls_openpgp_privkey_sign_hash: ADD, new functions useful in sign callback.
GNUTLS_E_APPLICATION_ERROR_MIN,
GNUTLS_E_APPLICATION_ERROR_MAX: ADD, new CPP #defines for error codes.

* Version 1.7.16 (released 2007-08-07)

** Fix sanity checks and return values in certificate selection.
In some cases, GnuTLS omitted to report suitable error codes when no
suitable certificate was found.

** Fix gnutls-cli starttls EOF on Mac OS X.
Thanks to Hal Eden <n.mavrogiannopoulos@gmail.com>.

** Documentation fixes.
In particular, the section headings were modified for casing.  By
Ludovic Courtes <ludovic.courtes@laas.fr>.

** Update gnulib files.

** API and ABI modifications:
No changes since last version.

* Version 1.7.15 (released 2007-07-02)

** Fix self-tests key-id under mingw32.

** Test that the Guile header files are recent enough to work.
Before we just tested that the command line tool 'guile' was recent
enough, which may not be sufficient if you still have an old
libguile.h header installed.

** Guile bindings are now installed under $prefix by default.
Use --without-guile-site-dir to install it under $pkgdatadir/site/
where $pkgdatadir is as returned by "guile-config info pkgdatadir".
Use --with-guile-site-dir=/your/own/path to specify the path manually.
The default, --with-guile-site-dir, will install the Guile bindings
under $datadir/guile/site.  There is a new section 'Guile
Preparations' in the manual that discuss these issues.

** Fix run-time library path ordering in linking the Guile bindings.

** Improved manual on downloading, installing, getting help, bug reports etc.
Suggested by Ludovic Courtès <ludovic.courtes@laas.fr>.

** Add Malay message translations.
Thanks to Sharuzzaman Ahmat Raslan <sharuzzaman@myrealbox.com>.

** API and ABI modifications:
No changes since last version.

* Version 1.7.14 (released 2007-06-26)

** Don't enable Guile bindings unless we have Guile 1.8 or later.
Patch from Ludovic Courtès <ludovic.courtes@laas.fr>.

** Fix memory leak during DSA signature verification.
Patch from Ludovic Courtès <ludovic.courtes@laas.fr>.

** Fix crash in gnutls-cli when TLS handshake fails.
Reported by Marc Haber <mh+debian-bugs@zugschlus.de> and Andreas
Metzler <ametzler@downhill.at.eu.org> via Debian BTS #429183, see
<https://bugs.debian.org/429183>.

** Minor OpenPGP fixes in stream_to_datum.
Patch from Timo Schulz <twoaday@freakmail.de> and Ludovic Courtès
<ludovic.courtes@laas.fr>.

** Fix off-by-one in TLS 1.2 handshake.
Patch from Ludovic Courtès <ludovic.courtes@laas.fr>.

** Minor Guile binding self-test cleanup.
Patch from Ludovic Courtès <ludovic.courtes@laas.fr>.

** Update gnulib files.

** API and ABI modifications:
No changes since last version.

* Version 1.7.13 (released 2007-06-11)

** OpenCDK copy updated to version 0.6.3.

** Build fixes for GnuTLS Guile bindings.
Patch from Ludovic Courtès <ludovic.courtes@laas.fr>.

** Build fix for GTK-DOC manual.

** Update gnulib files.

** API and ABI modifications:
No changes since last version.

* Version 1.7.12 (released 2007-06-08)

** Guile bindings for GnuTLS have been included.
Contributed by Ludovic Courtès <ludovic.courtes@laas.fr>.  There is a
new chapter 'Guile Bindings' in the manual.

** Have PKCS8 parser return better error codes.
Reported by Nate Nielsen <nielsen-list@memberwebs.com>, see
<https://lists.gnupg.org/pipermail/gnutls-dev/2007-May/001653.html> and
<https://lists.gnupg.org/pipermail/gnutls-dev/2007-May/001654.html>.

** Fix mem leak for sessions with client authentication via certificates.
Reported by Andrew W. Nosenko <andrew.w.nosenko@gmail.com>, see
<https://lists.gnupg.org/pipermail/gnutls-dev/2007-April/001539.html>.

** Fix mem leaks.
Reported by Dennis Vshivkov <walrus@amur.ru>, see
<https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=333050>.  Added
self-test tests/parse_ca.c to test regressions.

** Fix build failures related to missing images in manual.
Reported by Andreas Metzler <ametzler@downhill.at.eu.org>.

** Update gnulib files.

** API and ABI modifications:
No changes since last version.

* Version 1.7.11 (released 2007-05-26)

** Include opencdk.h in the release.
Reported by Roman Bogorodskiy <novel@FreeBSD.org>.

** API and ABI modifications:
No changes since last version.

* Version 1.7.10 (released 2007-05-25)

** New API functions to extract DER encoded X.509 Subject/Issuer DN.
Suggested by Nate Nielsen <nielsen-list@memberwebs.com>.

** Update of gnulib files.

** GnuTLS is now developed in GIT instead of CVS.
See <http://repo.or.cz/w/gnutls.git> for a public repository.

** API and ABI modifications:
gnutls_x509_crt_get_raw_issuer_dn: ADD.
gnutls_x509_crt_get_raw_dn: ADD.

* Version 1.7.9 (released 2007-05-12)

** X.509 certificates are preferred over OpenPGP keys.
This is a change in the semantics of gnutls_set_default_priority.

** The included copy of OpenCDK has been updated to 0.6.1.
There has been some API changes in OpenCDK, and the GnuTLS layer have
been modified as well.  Note that while there are API/ABI incompatible
changes in OpenCDK, this does not influence GnuTLS's API/ABI because
its API/ABI have not changed.  From this version on, GnuTLS requires
OpenCDK 0.6.0 or later.

** Fix build failure caused by missing doc/gnutls-logo.pdf.

** Change certtool's default serial number from 0 to a time-based value.

** Fix X.509 signing with RSA-PKCS#1 to set a NULL parameters fields.
Before, we remove the parameters field, which resulted in a slightly
different DER encoding which in turn caused signature verification
failures of GnuTLS-generated RSA certificates in some other
implementations (e.g., GnuPG 2.x's gpgsm).  Depending on which RFCs
you read, this may or may not be correct, but our new behaviour appear
to be consistent with other widely used implementations.

** Fix mem leaks in gnutls_x509_crt_print.

** API and ABI modifications:
No changes since last version.

* Version 1.7.8 (released 2007-04-16)

** Added examples for the authorization extension.
See doc/examples/ex-client-authz.c and doc/examples/ex-serv-authz.c.

** The examples only use gnutls_set_default_priority().
The exception is when DH_ANON is needed.

** Improve gnutls_set_default_priority() priorities.
The new approach is for it to try and negotiate all secure and
standard mechanisms available.  Currently, DH_ANON ciphersuites and
LZO compressions are not enabled by default, because they are,
respectively, insecure and non-standardized.  Note that TLS 1.2 will
not be enabled by default in non-experimental release until it has
been approved by the IETF.

** gnutls-cli and gnutls-serv now uses the library's default priorities.
This means that to get DH_ANON and LZO compression, you'll need to
specify that manually using '--kx anon' or '--comp lzo'.

** Minor fixes to the human display format of X.509 certificates.

** New APIs to extract Distinguished Name's from X.509 certificates.
Based on patch from Howard Chu <hyc@symas.com>.

** Improved library searching for opencdk.
It will now add the appropriate -R or -Wl,-rpath flags as necessary.
The deprecated opencdk.m4 is no longer used.

** New APIs to list supported algorithms in the library.
The APIs are gnutls_cipher_list, gnutls_mac_list,
gnutls_compression_list, gnutls_protocol_list,
gnutls_certificate_type_list, gnutls_kx_list, and
gnutls_cipher_suite_info.  Suggested by Howard Chu <hyc@symas.com>.

** The gnutls_x509_crt_get_key_id API now handle non-RSA/DSA keys.

** New configure option --disable-tls-authorization to disable tls-authz.

** Fix prototype for `gnutls_psk_set_client_credentials'.
The last parameter was renamed from 'flags' to 'format' and the type
changed from 'unsigned int' to 'gnutls_psk_key_flags' (an enum type),
which shouldn't cause any ABI changes.  Reported by ludo@chbouib.org
(Ludovic Courtès).

** Fix allocation in gnutls_certificate_set_openpgp_key.
Tiny patch from ludo@chbouib.org (Ludovic Courtès).

** API and ABI modifications:
gnutls_x509_dn_t: ADD.
gnutls_x509_ava_st: ADD.
gnutls_x509_crt_get_subject,
gnutls_x509_crt_get_issuer: ADD.
gnutls_x509_dn_get_rdn_ava: ADD.
gnutls_cipher_list: ADD.
gnutls_mac_list: ADD.
gnutls_compression_list: ADD.
gnutls_protocol_list: ADD.
gnutls_certificate_type_list: ADD.
gnutls_kx_list: ADD.
gnutls_cipher_suite_info: ADD.

* Version 1.7.7 (released 2007-02-22)

** Support for supplemental handshake messages and authorization data.
Supplemental data is described in RFC 4680 and the authorization
extensions in draft-housley-tls-authz-extns-07.

** Support for authorization data in gnutls-cli and gnutls-serv.
New parameters --authz-x509-attr-cert and --authz-saml-assertion.

** Fix for gnutls_x509_crt_check_hostname.
Before it would have reported that the certificate matched a hostname
when it did not have any dNSName or any CN field.  Report and tiny
patch from "Richard W.M. Jones" <rjones@redhat.com>.

** New self test for RFC 2818 comparison in gnutls_x509_crt_check_hostname.
Tests regressions of the bug, and several other features.

** GnuTLS now matches URI's with IP Addresses against iPAddress SAN's.
Before there were no support for iPAddress SAN's during comparison.

** New API to print information about CRL's.
The function is gnutls_x509_crl_print.

** New API to extract signature value from CRL's.
The function is gnutls_x509_crl_get_signature.

** Support for directoryName Subject Alternative Name's.
The gnutls_x509_crt_get_subject_alt_name function returns the DN as a
string in the provided buffer.

** Internal improvements to certtool.
It uses gnutls_x509_crl_print to print CRL information.  It uses some
more gnulib modules to simplify error handling.

** API and ABI modifications:
GNUTLS_HANDSHAKE_SUPPLEMENTAL: ADD, new gnutls_handshake_description_t element.
gnutls_supplemental_data_format_type_t: ADD.
gnutls_authz_data_format_type_t: ADD.
gnutls_supplemental_get_name: ADD.
gnutls_authz_recv_callback_func,
gnutls_authz_send_callback_func: ADD, callback prototypes.
gnutls_authz_enable: ADD.
gnutls_authz_send_x509_attr_cert,
gnutls_authz_send_saml_assertion,
gnutls_authz_send_x509_attr_cert_url,
gnutls_authz_send_saml_assertion_url: ADD.
GNUTLS_SAN_DN: ADD, new gnutls_x509_subject_alt_name_t element.
gnutls_x509_crl_print: ADD.
gnutls_x509_crl_get_signature: ADD.

* Version 1.7.6 (released 2007-02-12)

** Support for 'otherName' Subject Alternative Names.
The existing API gnutls_x509_crt_get_subject_alt_name may now return
the new type GNUTLS_SAN_OTHERNAME together with the otherName value.
To find out the otherName OID (necessary for proper parsing of the
value), use the new API gnutls_x509_crt_get_subject_alt_othername_oid.
For known OIDs, gnutls_x509_crt_get_subject_alt_othername_oid will
return "virtual" SAN values, e.g., GNUTLS_SAN_OTHERNAME_XMPP to
simplify OID matching.  Suggested by Matthias Wimmer <m@tthias.eu>.

** Certtool can print otherName SAN values for certificates.
For known otherName OIDs (currently only id-on-xmppAddr as defined by
RFC 3920), it will also print the name.

** Fix TLS 1.2 RSA signing in servers.
Before it used the old-style MD5+SHA1 signature, but the TLS
signatures should be normal PKCS#1 signatures.  FYI, we use and
require that DigestInfo parameters are present and NULL for TLS 1.2.

** Add APIs to access X.509 extensions sequentially.
The existing APIs gnutls_x509_crt_get_extension_oid() and
gnutls_x509_crt_get_extension_by_oid() does not permit callers to
inspect the extensions in the order defined by the certificate.

** Add API to extract signature value from X.509 certificates.
The function is gnutls_x509_crt_get_signature.

** Fix crash when generating proxy certificates in batch mode.
If you don't specify a proxy policy in batch mode, it will use
id-ppl-inheritALL.

** Add API to print information about X.509 certificates.
The function is gnutls_x509_crt_print.

** Certtool uses the new API gnutls_x509_crt_print to print certificate info.
One consequence of this is that the output syntax has changed
slightly.  Some more fields are printed.

** Doc fixes.

** API and ABI modifications:
gnutls_x509_crt_print: ADD
gnutls_certificate_print_formats_t: ADD, new enum.
gnutls_x509_crt_get_signature: ADD.
gnutls_x509_crt_get_extension_data: ADD.
gnutls_x509_crt_get_extension_info: ADD.
gnutls_x509_crt_get_subject_alt_othername_oid: ADD.
GNUTLS_SAN_OTHERNAME: ADD, new gnutls_x509_subject_alt_name_t element.
GNUTLS_SAN_OTHERNAME_XMPP: ADD, new gnutls_x509_subject_alt_name_t element.

* Version 1.7.5 (released 2007-02-06)

** Servers won't negotiate SRP RSA/DSS cipher suites if no SRP credential
** is set.

** Default behaviour for the gnutls-cli and gnutls-serv tools improved.

** Fix --list output for gnutls-cli and gnutls-serv.
Mention TLS1.2, SHA512 etc.

** Manual contains new section on setting up a test HTTP server.
A server set up following those descriptions are available online via
<http://www.gnutls.org/server.html>.

** Update of gnulib files.

** API and ABI modifications:
No changes since last version.

* Version 1.7.4 (released 2007-02-05)

** Support for RSA signing using SHA-256/384/512.
A new self test "sha2" tries to build a long X.509 certificate chain
testing all new hashes.

** The gnutls-serv tool now use static DH parameters if none are supplied.

** Discuss proxy certificates in the manual.

** Improve bibliographical citations in the manual.

** Update of gnulib files.

** Fix certtool template handling of pathLenConstraints.
It now defaults to -1 instead of 0, which causes the field to be
missing unless the template specify it.

** API and ABI modifications:
GNUTLS_MAC_SHA256,
GNUTLS_MAC_SHA384,
GNUTLS_MAC_SHA512: New gnutls_mac_algorithm_t values.
GNUTLS_DIG_SHA256,
GNUTLS_DIG_SHA384,
GNUTLS_DIG_SHA512: New gnutls_digest_algorithm_t values.
GNUTLS_SIGN_RSA_SHA256,
GNUTLS_SIGN_RSA_SHA384,
GNUTLS_SIGN_RSA_SHA512: New gnutls_sign_algorithm_t values.

* Version 1.7.3 (released 2007-02-01)

** New option to certtool: --generate-proxy.
This will generate a Proxy Certificate from an end entity certificate.
Proxy Certificates are documented in RFC 3820.  You will need to
specify the proxy certificate's private key with --load-privkey, the
user certificate with --load-certificate and the private key used to
sign the new proxy certificate with --load-ca-privkey.  Certtool will
query for proxy path length and the policy language OID.  Currently
only OIDs that have an empty policy are supported (which includes the
two OIDs defined by RFC 3820).

** Certtool --certificate-info now prints information for Proxy Certificates.
Before the proxy extension was just printed as DER encoded data.

** New APIs to set proxy subject names and get/set proxy cert extension.

** Fix parsing of pathLenConstraints in BasicConstraints with missing cA.

** Added self-test to test for regressions of pathLenConstraint bug.
Incidentally, this also test (some) other regressions or changes in
the output from certtool --certificate-info.

** When certtool generates CA certificates, pressing enter on the path
** length constraint query will now remove the field.
Before it set the path length constraint to 0, which is a rather poor
default.

** Certtool now print times in UTC when printing certificate/CRL info.

** Add better fix to work around C++ compiler bug on Mac OS X.
Reported and tiny patch provided by Matthias Scheler <tron@NetBSD.org>.

** Fix import of ASCII armored OpenPGP keys.
Patch by ludovic.courtes@laas.fr (Ludovic Courtès).

** Update of gnulib files.

** API and ABI modifications:
gnutls_x509_crt_set_proxy_dn: ADD.
gnutls_x509_crt_set_proxy: ADD.
gnutls_x509_crt_get_proxy: ADD.

* Version 1.7.2 (released 2007-01-14)

** Certtool now print the value of the pathLenConstraints field for certs.

** Certtool now query for path length constraints when generating CA certs.
For batch uses, the certtool configuration name is "path_len".
Suggested by Sascha Ziemann <sascha.ziemann@secunet.com>.

** Add new API to get/set pathLenConstraint in the Basic Constraints.
The new functions gnutls_x509_crt_get_basic_constraints and
gnutls_x509_crt_set_basic_constraints provide a superset of the
functionality in the old gnutls_x509_crt_get_ca_status and
gnutls_x509_crt_set_ca_status (respectively), but the old functions
will continue to be supported.

** Add new API in OpenCDK to extract public/secret OpenPGP key to S-expr.
The functions are cdk_pubkey_to_sexp and cdk_seckey_to_sexp.  A proper
OpenCDK release with this patch will be made soon, which should bump
the OpenCDK version number.  Patch by Mario Lenz <mario.lenz@gmx.net>.

** Certtool --to-p12 can now store more than one certificate in the blob.
Before it could only store one certificate, but now it will read and
store as many certificate there are from the --load-certificate file.
Suggested by Sascha Ziemann <sascha.ziemann@secunet.com>.

** Clean up separation of gnutls and gnutls-extra for OpenPGP.
In particular, the OpenPGP function variables are no longer part of
the exported libgnutls interface, and no header files from
libgnutls-extra (GPL) are needed by libgnutls (LGPL).  The variables
were never intended for non-internal purposes, and thus this does not
imply a change in the external API/ABI.

** Print URL to gaa when missing, and fix srcdir!=builddir for GAA files.
Reported by ludovic.courtes@laas.fr (Ludovic Courtès).

** GnuTLS no longer uses -mms-bitfields --enable-runtime-pseudo-reloc.
Before these parameters were set to make GnuTLS build under mingw32,
however, they appear to no longer be necessary.

** A minor fix to the C++ library to make it build.
Reported by Pavlov Konstantin <thresh@altlinux.ru>.

** Update of gnulib files.

** API and ABI modifications:
gnutls_x509_crt_get_basic_constraints: ADD.
gnutls_x509_crt_set_basic_constraints: ADD.
cdk_pubkey_to_sexp: ADD (in opencdk).
cdk_seckey_to_sexp: ADD (in opencdk).

* Version 1.7.1 (released 2006-12-28)

** TLS 1.2 server side fix.
The Certificate Request sent did not contain the list of supported
hashes field, thus violating the protocol.  It will now contain an
empty list.  Reported by ludovic.courtes@laas.fr (Ludovic Courtès).

** TLS 1.2 DSA signature verification fix.
Reported by ludovic.courtes@laas.fr (Ludovic Courtès).

** Fix the list of trusted CAs that server's send to clients.
Before, the list contained issuer DN's instead of subject DN's of the
trusted CAs.  Reported by Max Kellermann <max@duempel.org>.

** Fix gnutls_certificate_set_x509_crl to initialize the CRL before using it.
Also added a self-test in tests/certificate_set_x509_crl.c to test the
function.  Reported by Max Kellermann <max@duempel.org>.

** Encode UID fields in DN's as DirectoryString.
Before GnuTLS encoded and parsed UID fields as IA5String.  This was
incorrect, it should have used DirectoryString.  Now it will use
DirectoryString for the UID field, but for backwards compatibility it
will also accept IA5String UID's.  Reported by Max Kellermann
<max@duempel.org>.

** Improve out-of-sourcedir builds from CVS.
Reported by ludovic.courtes@laas.fr (Ludovic Courtès).

** Bootstrap tools changed.
We now require autoconf 2.61, automake 1.10, and gettext 0.16, when
building GnuTLS from CVS.  Libtool 1.5.22 is used.

** Fixed a syntax error in lib/gnutls.asn.
Reported by Paul Millar <p.millar@physics.gla.ac.uk>.

** Added German translation of GnuTLS messages.

** Update of gnulib files.

** API and ABI modifications:
No changes since last version.

* Version 1.7.0 (released 2006-11-29)

** The default protocol priority try TLS 1.1 and TLS 1.2 too.
The details is that the protocol priority set by
`gnutls_set_default_priority' has been changed from TLS 1.0 and SSL
3.0 to TLS 1.2, TLS 1.1, TLS 1.0 and SSL 3.0.

** Preliminary support for TLS 1.2.
The client has been successfully tested against
https://www.mikestoolbox.org:4433/.

** Anonself test now print a lot of debugging info, including TLS version.

** Doc fixes in OpenCDK, to avoid some gtk-doc warnings.

** Update of gnulib files.

** API and ABI modifications:
GNUTLS_TLS1_2: New gnutls_protocol_t enum member.

*** Pulled up from stable 1.6.x branch:

** Fix ./configure failure with non-GCC compilers.
This fixes the following error message:
configure: error: conditional "HAVE_LD_OUTPUT_DEF" was never defined.
Reported by "Michael C. Vergallen" <mvergall@telenet.be>.

* Version 1.6.3 (released 2007-05-26)

** New API functions to extract DER encoded X.509 Subject/Issuer DN.
Suggested by Nate Nielsen <nielsen-list@memberwebs.com>.  Backported
from the 1.7.x branch, see
<https://lists.gnu.org/archive/html/help-gnutls/2007-05/msg00029.html>.

** Have PKCS8 parser return better error codes.
Reported by Nate Nielsen <nielsen-list@memberwebs.com>, see
<https://lists.gnupg.org/pipermail/gnutls-dev/2007-May/001653.html> and
<https://lists.gnupg.org/pipermail/gnutls-dev/2007-May/001654.html>.

** Fix mem leak for sessions with client authentication via certificates.
Reported by Andrew W. Nosenko <andrew.w.nosenko@gmail.com>, see
<https://lists.gnupg.org/pipermail/gnutls-dev/2007-April/001539.html>.

** Fix building of 'tlsia' self test.
Earlier some gcc are known to build tlsia linking to
$prefix/lib/libgnutls-extra.so rather than the libgnutls-extra.so in
the build directory, even though command line parameters look OK.
Changing order of some parameters fixes it.

** API and ABI modifications:
gnutls_x509_crt_get_raw_issuer_dn: ADD.
gnutls_x509_crt_get_raw_dn: ADD.

* Version 1.6.2 (released 2007-04-18)

** Fix X.509 signing with RSA-PKCS#1 to set a NULL parameters fields.
Before, we remove the parameters field, which resulted in a slightly
different DER encoding which in turn caused signature verification
failures of GnuTLS-generated RSA certificates in some other
implementations (e.g., GnuPG 2.x's gpgsm).  Depending on which RFCs
you read, this may or may not be correct, but our new behaviour appear
to be consistent with other widely used implementations.

** Regenerate the PKIX ASN.1 syntax tree.
For some reason, after changing the ASN.1 type of ldap-UID in the last
release, the generated C file built from the ASN.1 schema was not
refreshed.  This can cause problems when reading/writing UID
components inside X.500 Distinguished Names.  Reported by devel
<dev001@pas-world.com>.

** Updated translations.

** API and ABI modifications:
No changes since last version.

* Version 1.6.1 (released 2006-12-28)

** Fix the list of trusted CAs that server's send to clients.
Before, the list contained issuer DN's instead of subject DN's of the
trusted CAs.  Reported by Max Kellermann <max@duempel.org>.

** Fix gnutls_certificate_set_x509_crl to initialize the CRL before using it.
Reported by Max Kellermann <max@duempel.org>.

** Encode UID fields in DN's as DirectoryString.
Before GnuTLS encoded and parsed UID fields as IA5String.  This was
incorrect, it should have used DirectoryString.  Now it will use
DirectoryString for the UID field, but for backwards compatibility it
will also accept IA5String UID's.  Reported by Max Kellermann
<max@duempel.org>.

** Fix ./configure failure with non-GCC compilers.
This fixes the following error message:
configure: error: conditional "HAVE_LD_OUTPUT_DEF" was never defined.
Reported by "Michael C. Vergallen" <mvergall@telenet.be>.

** API and ABI modifications:
No changes since last version.

* Version 1.6.0 (released 2006-11-17)

** No changes since 1.5.5.
The major changes compared to the 1.4.x branch are:

*** A GnuTLS C++ library is part of the official distribution.
Currently there are no examples or documentation, but hopefully this
will change.  See gnutlsxx.h for the API.

*** Windows is a supported platform.
There are, however, two know bugs.  One is related to select() in
command line tools (not, nota bene, in the library), the other is a
problem with libgcrypt that causes delays.  Help is needed to resolve
those issues, so we feel we can't delay the release because of this.

*** New APIs for custom push/pull function error reporting.
The new APIs are gnutls_transport_set_errno and
gnutls_transport_set_global_errno.  See the release notes for version
1.5.4 for more information.

*** Self tests are run under valgrind, if available.  See --disable-valgrind.

* Version 1.5.5 (released 2006-11-16)

** Correctly bump shared library version after adding new APIs.
This was forgotten in the last release.

** Fix unsigned vs signed problem in ex-x509-info.c example.
Reported by Tim Kosse <tim.kosse@filezilla-project.org>.

** Fix the rsa-md5-collision self test to work for MinGW+Wine.

** Update of gnulib files.

** API and ABI modifications:
No changes since last version.

* Version 1.5.4 (released 2006-11-07)

** New API functions to set errno in push/pull functions.
Under Windows, setting the errno variable in a push/pull replacement
may end up setting the wrong errno variable, and GnuTLS send/recv
functions become confused about the real errno returned from a failed
push/pull function.  Therefor, we have added two APIs to set the errno
variable used by GnuTLS.  The APIs can also help to keep things
thread-safe, by avoiding potentially global variables.  Typically,
instead of setting errno in your push/pull function, you will call one
of these functions.  It is recommended to use
gnutls_transport_set_errno, but if you don't have the session variable
easily accessible in the push/pull replacement function, you can use
gnutls_transport_set_global_errno.  Suggested by Tim Kosse
<tim.kosse@filezilla-project.org>.

void gnutls_transport_set_errno (gnutls_session_t session, int err);
void gnutls_transport_set_global_errno (int err);

** When calling `recv' or `send' Windows errors are handled properly.
The Windows recv/send functions doesn't use errno, and GnuTLS now use
WSAGetLastError to access the error condition instead.

** Several OpenPGP API fixes.
All suggested by ludovic.courtes@laas.fr (Ludovic Courtès).  The most
important fix is to change the return value of
gnutls_openpgp_privkey_get_pk_algorithm and
gnutls_openpgp_key_get_pk_algorithm from 'int' to
'gnutls_pk_algorithm_t', which is an enum type (and thus API/ABI
compatible with 'int').

** When a GnuTLS server receive a SSLv2 Client Hello for an unknown TLS
** version, try to negotiate the highest version support by the GnuTLS server,
** instead of the lowest.
Reported by <Pasi.Eronen@nokia.com>.

** Replace old constructs with use of gnulib modules.
For example, we can now assume unistd.h, sys/stat.h, sys/socket.h in
the code.  If the headers doesn't exist on the target system, gnulib
will make sure its replacement header files are used instead.

** Fix SOVERSION computation for *.def files.
This fixes build errors similar to "No rule to make target
`libgnutls-`expr', needed by `all-am'." when building for Windows.

** gnutls_check-version uses strverscmp from gnulib.

** Update of gnulib files.

** API and ABI modifications:
gnutls_transport_set_errno: ADD
gnutls_transport_set_global_errno: ADD

* Version 1.5.3 (released 2006-10-26)

** Add new self-test of RSA-MD5 signature chains.
Note that we already, since GnuTLS 1.2.9, reject RSA-MD5 signatures
when verifying X.509 chains.  The code is in tests/rsa-md5-collision/
and is based on the work by Marc Stevens et al, see
<https://www.win.tue.nl/hashclash/TargetCollidingCertificates/>.

** Re-factor self tests.

** The include copy of Libtasn1 is updated to version 0.3.7.

** The included copy of OpenCDK is updated to version 0.5.11.

** Fix the filename of the *.def file on Windows after library version bump.

** Separated the gnulib directory into one for LGPL modules and one for GPL.
This allows the GPL'd part of GnuTLS to take advantage of the GPL'd
gnulib modules.  Earlier we could only use the LGPL'ed module from
gnulib, because two gnulib directories in the same project didn't
work.

** API and ABI modifications:
No changes since last version.

* Version 1.5.2 (released 2006-10-03)

** Decrement the shared library version back to 13 (as in the 1.4.x branch).
Note that if you installed 1.5.0 or 1.5.1, they will have a higher
shared library version than this version, so you'll have to remove
them and possibly relink your applications.  The reason for this is
that no API/ABI changes have been made since the 1.4.x branch, and
that incrementing the shared library version was a mistake.  Reported
by Andreas Metzler <ametzler@downhill.at.eu.org>.

** Fix off-by-one error when computing length to malloc.
The code is used by gnutls_openpgp_add_keyring_file and
gnutls_openpgp_add_keyring_mem.  Reported by "Adam Langley"
<agl@imperialviolet.org>.

** Add version script for the GnuTLS C++ library.
Reported by Andreas Metzler <ametzler@downhill.at.eu.org>.

** Fix the C++ compiler detection logic.
Reported by Andreas Metzler <ametzler@downhill.at.eu.org>.

** Update of gnulib files.

** API and ABI modifications:
No changes since last version.

* Version 1.5.1 (released 2006-09-21)

** Fix PKCS#1 verification to avoid a variant of Bleichenbacher's
** Crypto 06 rump session attack.
In particular, we check that the digestAlgorithm.parameters field is
missing or empty, to avoid that it can contain "garbage" that may be
used to alter the numeric properties of the signature.  See
<http://www.imc.org/ietf-openpgp/mail-archive/msg14307.html> (which is
not exactly the same as the problem we fix here).  Reported by Yutaka
OIWA <y.oiwa@aist.go.jp>.

See GNUTLS-SA-2006-4 on https://www.gnutls.org/security.html for more
up to date information.

** Add self test to test for above flaw.

** Fix gnutls-cli-debug regarding resume support detection.
Earlier, if the session-id from the server had a length of 0, it would
indicate that the server supports resumption, which isn't the case.
Reported by Kataja Kai <kai.kataja@op.fi>.

** Fix building of examples on FreeBSD by including netinet/in.h.
Reported by Roman Bogorodskiy <novel@FreeBSD.org>.

** Fix certtool bug that caused the private key to not be loaded when
generating a certificate with --load-request, which in turn triggered
another unrelated bug in gnutls_x509_crt_sign2 (also fixed).  Reported
by Sascha Ziemann <sascha.ziemann@secunet.com>.

** gnutls-cli and gnutls-serv works on Windows.
The problem was the select() call that doesn't work on file
descriptors (stdin) on Windows.  We borrowed some code from plibc to
solve this.  It appears to be somewhat unreliable though.

** Autoconf 2.60 is now used.

** API and ABI modifications:
No changes since last version.

* Version 1.5.0 (released 2006-08-13)

** Change SRP and Cert-Type extensions to match IANA registry.

** Fixed bug in OpenPGP authentication handshake.

** Improvements for building under MinGW.
Provides internal inet_ntop and inet_pton functions and arpa/inet.h
header.  Calls WSAStartup and WSACleanup in gnutls_global_init and
gnutls_global_deinit, respectively.  Loads getaddrinfo and getnameinfo
at run-time from ws2_32.dll, and falls back on a simple replacement if
it is not available.  Builds the library with -mms-bitfields
-Wl,--enable-runtime-pseudo-reloc.  Links with --output-def, to
create *.def files, which are installed.

** The examples now (conditionally) include config.h and link to gnulib.
No other source changes were necessary, so the examples should
continue to be possible to use stand-alone without any autoconf or
gnulib stuff.

** Added C++ header "gnutlsxx.h" and library "libgnutlsxx".
You may unconditionally disable it with --disable-cxx.  See
includes/gnutls/gnutlsxx.h and lib/gnutlsxx.cpp for the
implementation.

** Made command line tool '--version' behave according to GNU Standards.
This enables 'make distcheck' to succeed.

** OpenCDK updated to 0.5.9 to fix some problems with OpenPGP support.

** Make --without-included-libtasn1 work.
Reported by Daniel Black <dragonheart@gentoo.org>.

** Fix a crash (strcmp() on a NULL value) in the certificate verification logic.
See https://www.gnu.org/software/gnutls/security.html regardging
GNUTLS-SA-2006-2 for more up to date information.  Reported by
satyakumar <satyam_kkd@hyd.hellosoft.com>.

** API and ABI modifications:
No changes since last version.

* Version 1.4.5 (released 2006-11-06)

** When a GnuTLS server receive a SSLv2 Client Hello for an unknown TLS
** version, try to negotiate the highest version support by the GnuTLS server,
** instead of the lowest.
Reported by <Pasi.Eronen@nokia.com>.

** Fix typo in doc/examples/ex-serv-pgp.c.
Reported by Adam Langley" <agl@imperialviolet.org>.

** API and ABI modifications:
No changes since last version.

* Version 1.4.4 (released 2006-09-12)

** Relax the test that caught signatures that exploit the variant of
** Bleichenbacher's Crypto 06 rump session attack on our
** verification logic flaw.
In particular, we now permit the digestAlgorithm.parameters field to
be present but empty, whereas in 1.4.3 we actually checked that the
field was absent.

** Revert the removal of debug information for the GNUTLS-SA-2006-3 problem.
The messages are only printed in debug mode, which is not recommended
for normal use, and thus logging this situation cannot be abused as an
oracle in typical recommended situations.

** API and ABI modifications:
No changes since last version.

* Version 1.4.3 (released 2006-09-08)

** Fix PKCS#1 verification to avoid a variant of Bleichenbacher's
** Crypto 06 rump session attack.
In particular, we check that the digestAlgorithm.parameters field is
empty, to avoid that it can contain "garbage" that may be used to
alter the numeric properties of the signature.  See
<http://www.imc.org/ietf-openpgp/mail-archive/msg14307.html> (which is
not exactly the same as the problem we fix here).  Reported by Yutaka
OIWA <y.oiwa@aist.go.jp>.

See GNUTLS-SA-2006-4 on https://www.gnutls.org/security.html for more
up to date information.

** Fix PKCS#1 decryption to avoid Bleichenbacher's Crypto 98 attack.
See <http://www.bell-labs.com/user/bleichen/papers/pkcs.ps.gz>.
Reported by Werner Koch <wk@gnupg.org>.

See GNUTLS-SA-2006-3 on https://www.gnutls.org/security.html for more
up to date information.

** Fix crash in gnutls_x509_crt_sign2 if passed a NULL issuer_key.

** API and ABI modifications:
No changes since last version.

* Version 1.4.2 (released 2006-08-12)

** Fix a crash (strcmp() on a NULL value) in the certificate verification logic.
This can happen if you call gnutls_certificate_verify_peers2 and have
a certain mix of local CA certificates and the peer send special
certificates, that together trigger certain behaviour.  It is not
known at this point whether the crash can be triggered without the
special local CA certificate, and thus turn this into a remote crash
of clients that verify server certificates when they talk to a server
with the special server certificate.  See GNUTLS-SA-2006-2 on
https://www.gnu.org/software/gnutls/security.html for more up to date
information.  Reported by satyakumar <satyam_kkd@hyd.hellosoft.com>.

** Change SRP and Cert-Type extensions to match IANA registry.

** OpenCDK updated to 0.5.9 to fix some problems with OpenPGP support.

** Make --without-included-libtasn1 work.
Reported by Daniel Black <dragonheart@gentoo.org>.

** API and ABI modifications:
No changes since last version.

* Version 1.4.1 (released 2006-06-14)

** Replaced inactive ifdefs to enable openpgp support in test programs.

** Fixed bug in OpenPGP authentication handshake.

** Fixed typographical in man pages.

** Build fixes of the manual.

** Added Swedish translation.

** API and ABI modifications:
No changes since last version.

* Version 1.4.0 (released 2006-05-15)

** Remove GnuTLS 0.8.x compatibility functions.

** The libgcrypt RNG is initialized in gnutls_global_init().

** TLS/IA API changes from Emile van Bergen.
A dummy credential structure is not needed now, if you wish to use the
low-level TLS/IA API, simply call gnutls_ia_enable to enable TLS/IA on
a session.

** The self-tests are now run under valgrind, if it is installed.

** Libtasn1 is updated to 0.3.4, and that version is now required.

** The command line tools now use getaddrinfo and support IPv6.

** API and ABI modifications:
_gnutls_x509_get_raw_crt_activation_time,
_gnutls_x509_get_raw_crt_expiration_time: Removed.
gnutls_ia_require_inner_phase: Removed, replaced by gnutls_ia_enable.
gnutls_ia_enable: Added.

* Version 1.3.5 (released 2006-03-08)

** Error messages are now translated using GNU Gettext.

** The function gnutls_x509_crt_to_xml now return an internal error.
This means that the code to convert X.509 certificates to XML format
does not work any more.  The reason is that the function called
libtasn1 internal functions.  It seems unclean for libtasn1 to export
the APIs needed here.  Instead it would be better to implement XML
support inside libtasn1 properly.  If you need this functionality
strongly, please consider looking into implementing this suggested
approach instead.  As a workaround, you may also modify lib/x509/xml.c
(change '#if 1' to '#if 0') and build using --with-included-libtasn1.

** Libraries are now built with libtool's -no-undefined.
This helps producing libraries for Windows using mingw32.

** Doc fixes to explain that gnutls_record_send can block.

** Libtasn1 0.3.1 or later is now required.
The include copy has been updated too.

** gnutls-cli can now recognize services and port numbers with the -p option.

** API and ABI modifications:
No changes since last version.

* Version 1.3.4 (released 2006-02-09)

** Fix read of out bounds bug in DER parser.
Reported by Evgeny Legerov <admin@gleg.net>, and debugging help from
Protover SSL.  Libtasn1 0.2.18 is now required, which contains the
previous bug fix.  The included libtasn1 version in GnuTLS has been
updated.

** Fixed bug in non-blocking gnutls_bye(). gnutls_record_send() will no
longer invalidate a session if the underlying send fails, but it will
prevent future writes. That is to allow reading the already received data.
Patches and bug reports by Yoann Vandoorselaere <yoann@prelude-ids.org>

** Corrected bugs in gnutls_certificate_set_x509_crl() and
gnutls_certificate_set_x509_trust(), that caused memory corruption if
more than one certificates were added. Report and patch by Max Kellermann.

** Fix build problems of OpenCDK on AIX.
Thanks to "Heiden, John" <JHeiden@UTNet.UToledo.Edu>.

** API and ABI modifications:
No changes since last version.

* Version 1.3.3 (released 2006-01-12)

** New API to access the TLS master secret.
When possible, you should use the TLS PRF functions instead.
Suggested by Jouni Malinen <jkmaline@cc.hut.fi>.

** Improved handling when multiple libraries use GnuTLS at the same time.
Now gnutls_global_init() can be called multiple times, and
gnutls_global_deinit() will only deallocate the structure when it has
been called as many times as gnutls_global_init() was called.

** Added a self test of TLS resume functionality.

** Fix crash in TLS resume code, caused by TLS/IA changes.

** Documentation fixes about thread unsafety, prompted by
** discussion with bryanh@giraffe-data.com (Bryan Henderson).
In particular, gnutls_global_init() and gnutls_global_deinit() are not
thread safe.  Careful callers may want to protect the call using a
mutex.  The problem could also be ignored, which would cause a memory
leak under rare conditions when two threads invoke the function
roughly at the same time.

** Add 'const' keywords in various places, from Frediano ZIGLIO.

** The code was indented again, including the external header files.

** API and ABI modifications:
New functions to retrieve the master secret value:
  gnutls_session_get_master_secret

Add a 'const' keyword to existing API:
  gnutls_x509_crq_get_challenge_password

* Version 1.3.2 (released 2005-12-15)

** GnuTLS now support TLS Inner application (TLS/IA).
This is per draft-funk-tls-inner-application-extension-01.  This
functionality is added to libgnutls-extra, so it is licensed under the
GNU General Public License.

** New APIs to access the TLS Pseudo-Random-Function (PRF).
The PRF is used by some protocols building on TLS, such as EAP-PEAP
and EAP-TTLS.  One function to access the raw PRF and one to access
the PRF seeded with the client/server random fields are provided.
Suggested by Jouni Malinen <jkmaline@cc.hut.fi>.

** New APIs to access the client and server random fields in a session.
These fields can be useful by protocols using TLS.  Note that these
fields are typically used as input to the TLS PRF, and if this is your
intended use, you should use the TLS PRF API that use the
client/server random field directly.  Suggested by Jouni Malinen
<jkmaline@cc.hut.fi>.

** Internal type cleanups.
The uint8, uint16, uint32 types have been replaced by uint8_t,
uint16_t, uint32_t.  Gnulib is used to guarantee the presence of
correct types on platforms that lack them.  The uint type have been
replaced by unsigned.

** API and ABI modifications:
New functions to invoke the TLS Pseudo-Random-Function (PRF):
  gnutls_prf
  gnutls_prf_raw

New functions to retrieve the session's client and server random values:
  gnutls_session_get_server_random
  gnutls_session_get_client_random

New function, to perform TLS/IA handshake:
  gnutls_ia_handshake

New function to decide whether to do a TLS/IA handshake:
  gnutls_ia_handshake_p

New functions to allocate a TLS/IA credential:
  gnutls_ia_allocate_client_credentials
  gnutls_ia_free_client_credentials
  gnutls_ia_allocate_server_credentials
  gnutls_ia_free_server_credentials

New functions to handle the AVP callback:
  gnutls_ia_set_client_avp_function
  gnutls_ia_set_client_avp_ptr
  gnutls_ia_get_client_avp_ptr
  gnutls_ia_set_server_avp_function
  gnutls_ia_set_server_avp_ptr
  gnutls_ia_get_server_avp_ptr

New functions, to toggle TLS/IA application phases:
  gnutls_ia_require_inner_phase

New function to mix session keys with inner secret:
  gnutls_ia_permute_inner_secret

Low-level API (used internally by gnutls_ia_handshake):
  gnutls_ia_endphase_send
  gnutls_ia_send
  gnutls_ia_recv

New functions that can be used after successful TLS/IA negotiation:
  gnutls_ia_generate_challenge
  gnutls_ia_extract_inner_secret

Enum type with TLS/IA modes:
  gnutls_ia_mode_t

Enum type with TLS/IA packet types:
  gnutls_ia_apptype_t

Enum values for TLS/IA alerts:
  GNUTLS_A_INNER_APPLICATION_FAILURE
  GNUTLS_A_INNER_APPLICATION_VERIFICATION

New error codes, to signal when an application phase has finished:
  GNUTLS_E_WARNING_IA_IPHF_RECEIVED
  GNUTLS_E_WARNING_IA_FPHF_RECEIVED

New error code to signal TLS/IA verify failure:
  GNUTLS_E_IA_VERIFY_FAILED

* Version 1.3.1 (released 2005-12-08)

** Support for DHE-PSK cipher suites has been added.
This method offers perfect forward secrecy.

** Fix gnutls-cli STARTTLS hang when SIGINT is sent too quickly, thanks to
Otto Maddox <ottomaddox@fastmail.fm> and Nozomu Ando <nand@mac.com>.

** Corrected a bug in certtool for 64 bit machines. Reported
by Max Kellermann <max@duempel.org>.

** New function to set a X.509 private key and certificate pairs, and/or
CRLs, from an PKCS#12 file, suggested by Emile van Bergen
<emile@e-advies.nl>.

The integrity of the PKCS#12 file is protected through a password
based MAC; public-key based signatures for integrity protection are
not supported.  PKCS#12 bags may be encrypted using password derived
symmetric keys, public-key based encryption is not supported.  The
PKCS#8 keys may be encrypted using passwords.  The API use the same
password for all operations.  We believe that any more flexibility
create too much complexity that would hurt overall security, but may
add more PKCS#12 related APIs if real-world experience indicate
otherwise.

** gnutls_x509_privkey_import_pkcs8 now accept unencrypted PEM PKCS#8 keys,
reported by Emile van Bergen <emile@e-advies.nl>.
This will enable "certtool -k -8" to parse those keys.

** Certtool now generate keys in unencrypted PKCS#8 format for empty passwords.
Use "certtool -p -8" and press press enter at the prompt.  Earlier,
certtool would have encrypted the key using an empty password.

** Certtool now accept --password for --key-info and encrypted PKCS#8 keys.
Earlier it would have prompted the user for it, even if --password was
supplied.

** Added self test of PKCS#8 parsing.
Unencrypted and encrypted (pbeWithSHAAnd3-KeyTripleDES-CBC and
pbeWithSHAAnd40BitRC2-CBC) formats are tested.  The test is in
tests/pkcs8.

** API and ABI modifications:
New function to set X.509 credentials from a PKCS#12 file:
  gnutls_certificate_set_x509_simple_pkcs12_file

New gnutls_kx_algorithm_t enum type:
  GNUTLS_KX_DHE_PSK

New API to return session data (basically same as gnutls_session_get_data):
  gnutls_session_get_data2

New API to set PSK Diffie-Hellman parameters:
  gnutls_psk_set_server_dh_params

* Version 1.3.0 (2005-11-15)

** Support for TLS Pre-Shared Key (TLS-PSK) ciphersuites have been added.
This add several new APIs, see below.  Read the updated manual for
more information.  A new self test "pskself" has been added, that will
test this functionality.

** The session resumption data are now system independent.

** The code has been re-indented to conform to the GNU coding style.

** Removed the RIPEMD ciphersuites.

** Added a discussion of the internals of gnutls in manual.

** Fixes for Tru64 UNIX 4.0D that lack MAP_FAILED, from Albert Chin.

** Remove trailing comma in enums, for IBM C v6, from Albert Chin.

** Make sure config.h is included first in a few files, from Albert Chin.

** Don't use C++ comments ("//") as they are invalid, from Albert Chin.

** Don't install SRP programs and man pages if --disable-srp-authentication,
from Albert Chin.

** API and ABI modifications:
New gnutls_kx_algorithm_t key exchange type: GNUTLS_KX_PSK

New gnutls_credentials_type_t credential type:
  GNUTLS_CRD_PSK

New credential types:
  gnutls_psk_server_credentials_t
  gnutls_psk_client_credentials_t

New functions to allocate PSK credentials:
  gnutls_psk_allocate_client_credentials
  gnutls_psk_free_client_credentials
  gnutls_psk_free_server_credentials
  gnutls_psk_allocate_server_credentials

New enum type for PSK key flags:
  gnutls_psk_key_flags

New function prototypes for credential callback:
  gnutls_psk_client_credentials_function
  gnutls_psk_server_credentials_function

New function to set PSK username and key:
  gnutls_psk_set_client_credentials

New function to set PSK passwd file:
  gnutls_psk_set_server_credentials_file

New function to extract PSK user in server:
  gnutls_psk_server_get_username

New functions to set PSK callback:
  gnutls_psk_set_server_credentials_function
  gnutls_psk_set_client_credentials_function

Use size_t instead of int for output size parameter:
  gnutls_srp_base64_encode
  gnutls_srp_base64_decode

* Version 1.2.11 (2006-05-11)
- The function gnutls_x509_crt_to_xml is not supported any more, and
  return an internal error.  The reason is that the function called
  internal libtasn1 functions which are no longer exported from
  libtasn1.
- Updated libtasn1 requirement to 0.3.4 and refreshed internal mintiasn1.
- Updated gnulib compatibility files.
- Fixed _gnutls_x509_get_raw_crt_expiration_time and
  _gnutls_x509_get_raw_crt_activation_time to return (time_t)-1 on errors.
- API and ABI modifications:
  No changes since last version.

* Version 1.2.10 (2006-02-09)
- Fix read out bounds bug in DER parser.  Reported by Evgeny Legerov
  <admin@gleg.net>, and debugging help from Protover SSL.
- Libtasn1 0.2.18 is now required (contains the previous bug fix).
  The included version has been updated too.
- Fix gnutls-cli STARTTLS hang when SIGINT is sent too quickly, thanks to
  Otto Maddox <ottomaddox@fastmail.fm> and Nozomu Ando <nand@mac.com>.
- Corrected a bug in certtool for 64 bit machines. Reported
  by Max Kellermann <max@duempel.org>.
- Corrected bugs in gnutls_certificate_set_x509_crl() and
  gnutls_certificate_set_x509_trust(), that caused memory corruption if
  more than one certificates were added. Report and patch by Max Kellermann.
- Fixed bug in non-blocking gnutls_bye(). gnutls_record_send() will no
  longer invalidate a session if the underlying send fails, but it will
  prevent future writes. That is to allow reading the already received data.
  Patches and bug reports by Yoann Vandoorselaere <yoann@prelude-ids.org>

* Version 1.2.9 (2005-11-07)
- Documentation was updated and improved.
- RSA-MD2 is now supported for verifying digital signatures.
- Due to cryptographic advances, verifying untrusted X.509
  certificates signed with RSA-MD2 or RSA-MD5 will now fail with a
  GNUTLS_CERT_INSECURE_ALGORITHM verification output.  For
  applications that must remain interoperable, you can use the
  GNUTLS_VERIFY_ALLOW_SIGN_RSA_MD2 or GNUTLS_VERIFY_ALLOW_SIGN_RSA_MD5
  flags when verifying certificates.  Naturally, this is not
  recommended default behaviour for applications.  To enable the
  broken algorithms, call gnutls_certificate_set_verify_flags with the
  proper flag, to change the verification mode used by
  gnutls_certificate_verify_peers2.
- Make it possible to send empty data through gnutls_record_send,
  to align with the send(2) API.
- Some changes in the certificate receiving part of handshake to prevent
  some possible errors with non-blocking servers.
- Added numeric version symbols to permit simple CPP-based feature
  tests, suggested by Daniel Stenberg <daniel@haxx.se>.
- The (experimental) low-level crypto alternative to libgcrypt used
  earlier (Nettle) has been replaced with crypto code from gnulib.
  This leads to easier re-use of these components in other projects,
  leading to more review and simpler maintenance.  The new configure
  parameter --with-builtin-crypto replace the old --with-nettle, and
  must be used if you wish to enable this functionality.  See README
  under "Experimental" for more information.  Internally, GnuTLS has
  been updated to use the new "Generic Crypto" API in gl/gc.h.  The
  API is similar to the old crypto/gc.h, because the gnulib code were
  based on GnuTLS's gc.h.
- Fix compiler warning in the "anonself" self test.
- API and ABI modifications:
gnutls_x509_crt_list_verify: Added 'const' to prototype in <gnutls/x509.h>.
                             This doesn't reflect a change in behaviour,
                             so we don't break backwards compatibility.
GNUTLS_MAC_MD2: New gnutls_mac_algorithm_t value.
GNUTLS_DIG_MD2: New gnutls_digest_algorithm_t value.
GNUTLS_VERIFY_ALLOW_SIGN_RSA_MD2,
GNUTLS_VERIFY_ALLOW_SIGN_RSA_MD5: New gnutls_certificate_verify_flags values.
                                  Use when calling
                                  gnutls_x509_crt_list_verify,
                                  gnutls_x509_crt_verify, or
                                  gnutls_certificate_set_verify_flags.
GNUTLS_CERT_INSECURE_ALGORITHM: New gnutls_certificate_status_t value,
                                used when broken signature algorithms
                                is used (currently RSA-MD2/MD5).
LIBGNUTLS_VERSION_MAJOR,
LIBGNUTLS_VERSION_MINOR,
LIBGNUTLS_VERSION_PATCH,
LIBGNUTLS_VERSION_NUMBER: New CPP symbols, indicating the GnuTLS
			  version number, can be used for feature existence
			  tests.

* Version 1.2.8 (2005-10-07)
- Libgcrypt 1.2.2 is required to fix a bug for forking GnuTLS servers.
- Don't install the auxiliary libexamples library used by the
  examples in doc/examples/ on "make install", report and tiny patch
  from Thomas Klausner <tk@giga.or.at>.
- If you pass a X.509 CA or PGP trust database to the command line
  tool, it will now abort the connection if the server certificate
  validation fails.  Use the parameter --insecure to continue even
  after certificate validation failures.  Inspired from discussion
  with Alexander Kotelnikov <sacha@myxomop.com>.
- The test for socklen_t has been moved to gnulib.
- Link failures for duplicate or missing "program_name" symbol has been fixed,
  patch from Martin Lambers <marlam@marlam.de>.
- The command line tool and the examples no longer uses mmap or bzero,
  to make them more portable, patch from Martin Lambers
  <marlam@marlam.de>.
- Made the PKCS #12 API handle null passwords. Based on patch by
  Anton Altaparmakov <aia21@cam.ac.uk>.
- The GTK-DOC manual should build with current released tools.
  (But a copy of the output is included, so the tools are not required.)
- The inet_ntop function is now used through gnulib.
- API and ABI modifications:
  No changes since last version.

* Version 1.2.7 (2005-09-09)
- The GnuTLS and GnuTLS-extra libraries are now built with versioned symbols.
- Certtool now complains when reading out-of-range X.509 serial
  numbers, suggested by Fran <e_agf@yahoo.es>.
- Certtool now uses the readline library (when available) when reading
  X.509 serial numbers.
- Fixed build problems in getpass on uClibc and Mingw32 platforms.
- Fixed compile warning regarding socklen_t on Mingw32, reported by
  Martin Lambers <marlam@marlam.de>.
- Fixed examples in doc/examples/, suggested by Fran <e_agf@yahoo.es>.
- Gnulib is now used for the core library, enabling future code cleanups.
- The gnutls-cli tool now use gnutls_certificate_verify_peers2,
  suggested by Daniel Stenberg <daniel@haxx.se>.
- Doc fixes for gnutls_transport_set_push and gnutls_transport_set_pull.
- Minilibtasn1 is now 0.2.17 (removed optional use of C99 macros).
- Disable zlib support if zlib.h is not present.
- A number of internal cleanups.
- API and ABI modifications:
  No changes since last version.

* Version 1.2.6 (2005-07-16)
- MiniLZO updated to version 2.01 and moved to separate directory.
- Collision between system LZO header files and MiniLZO header file
  fixed, reported by Matthias Urlichs <smurf@smurf.noris.de>.
- Will now test for liblzo functionality in liblzo2 too, reported by
  Thomas Klausner <tk@giga.or.at>.
- Minilibtasn1 is now 0.2.14 (no code changes).
- Some code changes to avoid GTK-DOC warnings.
- API and ABI modifications:
  No changes since last version.

* Version 1.2.5 (2005-07-03)
- More builddir != srcdir fixes, reported by Mike Castle
  <dalgoda@ix.netcom.com>.
- Fixed off-by-one bug in the size parameter of gnutls_x509_crt_get*_dn,
  reported by Adam Langley <alangley@gmail.com>.
- Corrected some stuff in minilzo detection. Pointed out by
  Sergey Lipnevich.
- MiniLZO updated to version 2.00.
- gnutls_x509_crt_list_import now accept a DER formatted CRL.
- API and ABI modifications:
  No changes since last version.

* Version 1.2.4 (2005-05-28)
- Corrected some bugs that could affect 64 bit systems.
- Some corrections in the header files to include the prototype
  of memmem properly (affected 64 bit systems). Report and patch
  by Yoann Vandoorselaere <yoann@prelude-ids.org>.
- Introduced the --fix-key option to certtool, which can be used to
  regenerate the (optional) parameters in a private key. It should
  be used together with --key-info.
- Corrected a bug in certificate chain verification that could lead
  to marking a trusted chain as non trusted, if the last certificate in
  the chain was a self signed one.
- Gnulib portability files were updated.
- License were updated to reflect new FSF address.
- API and ABI modifications:
  No changes since last version.

* Version 1.2.3 (2005-04-28)
- Corrected bug in record packet parsing that could lead
  to a denial of service attack.
- Corrected bug in RSA key export. Previously exported keys
  can be fixed using certtool. Use certtool -k <infile >outfile
- API and ABI modifications:
    gnutls_x509_privkey_fix(): Add.

* Version 1.2.2 (2005-04-25)
- gnutls_error_to_alert() now considers
  GNUTLS_E_UNEXPECTED_HANDSHAKE_PACKET.
- Fixed error in session resuming that could cause a crash in a session.
- Fixed pkcs12 friendly name and local key identifier decoding.
- Internal cleanups, removed duplicate typedef/struct definitions,
  and made source code include external include file, to check
  function prototypes during compile time.
- API and ABI modifications:
  No changes since last version.  At least not intentional, but due
  to the include header changes, there may be inadvertent changes,
  please let us know if you find any.

* Version 1.2.1 (2005-04-04)
- gnutls_bye() will no longer fail when RDWR is used and application
  data are available for reading.
- Added more strict checks for the SRP parameters (g,n), when they
  are not in the included list.
- Added warning to certtool when MD5 is being used for digital
  signatures.
- Optimizations ("-O2 -finline-functions") are not enabled by default,
  instead the standard autoconf defaults are used.  Use `./configure
  CFLAGS="-O2 -finline-functions"' to get the old optimizations.
- Added the option --get-dh-params to certtool, in order to get the
  parameters included in the library primes and generators.
- Improved the semantics of GNUTLS_VERIFY_ALLOW_X509_V1_CA_CRT, to
  allow only trusted Version 1 CAs and introduced
  GNUTLS_VERIFY_ALLOW_ANY_X509_V1_CA_CRT which has the old semantics.
- Nettle self tests now build properly, reported by Pierre
  <pierre42d@9online.fr>.
- Eliminated some memory leaks in DHE and RSA-EXPORT cipher suites.
  Reported by Yoann Vandoorselaere <yoann@prelude-ids.org>.
- If the library has been compiled with features disabled, a warning is
  issued during the compilation of any program.
- API and ABI modifications:
    gnutls_x509_crt_list_import(): Add
    gnutls_x509_crq_get_attribute_by_oid(): Add.
    gnutls_x509_crq_set_attribute_by_oid(): Add
    gnutls_x509_crt_set_extension_by_oid(): Add.
    GNUTLS_VERIFY_ALLOW_X509_V1_CA_CRT: Modify semantics.
    GNUTLS_VERIFY_ALLOW_ANY_X509_V1_CA_CRT: Add, old behaviour.

* Version 1.2.0 (2005-01-27)
- Added the definitions and OIDs for the RIPEMD-160 hash algorithm.
- Introduced gnutls_x509_crt_sign2(), gnutls_x509_crq_sign2() and
  gnutls_x509_crl_sign2().
- Fixed license header in source code files.

* Version 1.1.23 (2005-01-18)
- It is now possible to generate PKCS#12 structures without private
  keys using "certtool --to-p12", suggested by Fabian Fagerholm
  <fabbe@paniq.net>.
- Certtool now prints information for the RSA and DSA parameters of
  certificates and private keys.
- Corrected the write of CRL distribution points.
- The certificate chain verification function now checks certificates
  in the reverse order to minimize the spent resources.
- Corrected several bugs found by Marcin Garski <mgarski@post.pl>
- The functions gnutls_x509_crl_get_issuer_dn, gnutls_x509_crq_get_dn,
  gnutls_x509_crt_get_issuer_dn, gnutls_x509_crt_get_dn, and
  gnutls_x509_rdn_get now set *sizeof_buf to the buffer length that is
  required, instead of the string length.  That is, the value has been
  incremented by 1 to account for the terminating zero. Reported by
  Martin Lambers <marlam@web.de>.
- Debug output shouldn't crash on platforms that doesn't handle NULL
  printf %s values.  Reported by Michael.Ringe@aachen.utimaco.de.
- Sync included copy of libtasn1 with version 0.2.13.
- Client X.509 authenticated connections via gnutls-cli should now work again.

* Version 1.1.22 (2004-11-04)
- Replace GNU LD version script with Libtool -export-symbols-regex,
  from Joe Orton <joe@manyfish.co.uk>.
- Documentation improvements.
- Code indented using 'indent -i4 -kr'.
- The API manual is included in Devhelp format.  (Was in last release too,
  but the NEWS entry was forgotten.)
- The OpenSSL compatibility code now use the internal crypto interface.
- Added simple self test of OpenSSL compatibility library.
- Internally, libtool convenience libraries are used.
- Cleanups to configure.ac.

* Version 1.1.21 (2004-10-27)
- Print DN of certificates with unknown characters in them, but in hexform
  only.
- Added second precision to the X.509 parsing and generation functions.
- Corrected bug in _gnutls_x509_get_dn_oid(), and returns the
  actual OID.
- Add parameter --la-file to libgnutls-config and libgnutls-extra-config,
  tiny patch contributed by Joe Orton <joe@manyfish.co.uk>.
- Add pkg-config meta files, suggested by Stéphane LOEUILLET
  <stephane.loeuillet@tiscali.fr>.
- Fix memory initializaion bug in gnutls_certificate_set_x509_trust,
  tiny patch by Aleix Conchillo Flaque <aleix@member.fsf.org>.
- Add self test of PKCS#12 functionality in "certtool", based on test
  vectors from Joe Orton <joe@manyfish.co.uk>.
- Fix library order in libgnutls*-config --libs output, to permit
  static linking, reported by Yoann Vandoorselaere
  <yoann@prelude-ids.org>.

* Version 1.1.20 (2004-10-12)
- Fix compile problem in gl/getpass.c on some systems.

* Version 1.1.19 (2004-10-07)
- Fix memory leak in gnutls_certificate_verify_peers and
  gnutls_certificate_free_credentials, report and patch by Simon
  Posnjak <simon.posnjak@cetrtapot.si>.
- Fix crash in `certtool --to-p12 --load-privkey foo', i.e. exporting
  a key and no certificate to PKCS#12.
- Fix objdir != srcdir builds, reported by "Gerrit P. Haase"
  <gp@familiehaase.de>.
- Fixes faulty getpass implementation in libextra/opencdk/, reported
  by Yoann Vandoorselaere <yoann@prelude-ids.org>.
- Uses memmem instead of strnstr in lib/.
- Using more GNULib portability files, although not yet inside lib/.
- Added gnutls_certificate_verify_peers to gnutls/compat.h.
  Nikos deprecated gnutls_certificate_verify_peers in favor of
  gnutls_certificate_verify_peers2 earlier in the 1.1 branch.
- Improvements to the manual.
- Add new example "ex-rfc2818" for certificate verification, from Nikos.
- Known bug: the library require snprintf.  This has not yet been
  fixed, but will be handled via GNULib later on.

* Version 1.1.18 (2004-08-24)
- Corrected handling of certificate with dates after year 2038.
- Corrected DER decoder which could incorrectly treat input as BER and fail.
- Correct certtool --smime-to-p7 end of line character handling.
- Added example client and server for anonymous authentication.
- Added self test that tests anonymous TLS client and server.
- Added self tests of Nettle and generic crypto layer.
- Added API reference manual in HTML format in doc/reference/ using GTK-DOC.
  Online version at <https://www.gnu.org/software/gnutls/reference/>.
- Assume C89 or better; removed checks for size_t, ptrdiff_t and time_t.
- Man pages for API functions are included.

* Version 1.1.17 (2004-08-18)
- Bug fix of padding string in RSA PKCS#1 v1.5 type 2 encryption,
  reported by Robey Pointer <robey@danger.com>.
- Generic crypto interface for secret key ciphers, hashes and randomness added.
  See section "Experimental" within section "COMPILATION ISSUES" in README.
- Removed length limit on passwords read by 'certtool'.
- Documentation fixes.

* Version 1.1.16 (2004-08-15)
- Fix missing gnulib linker parameter when building certtool.
- Add gnulib module 'progname', needed by module 'error'.
- Improve building with srcdir != objdir.

* Version 1.1.15 (2004-08-15)
- Certtool has simplistic --smime-to-p7 to translate RFC 2633 messages into
  PKCS #7 format.
- Ported to Mac OS X / Darwin.
- Ported to FreeBSD.

* Version 1.1.14 (2004-08-09)
- Documentation converted to Texinfo format.
- Bug fix of test suite.
- Configure now print build information, used by Autobuild.

* Version 1.1.13 (2004-08-05)
- Added simple self test suite.

* Version 1.1.12 (2004-08-02)
- Updated the SRP authentication to conform to the
  latest (yet unreleased) draft. Unfortunately this breaks
  compatibility with previous versions.
- Changed the makefiles to be more portable.
- SRP ciphersuites were moved to the gnutls library.
- Added some default limits in the verification of certificate
  chains, to avoid denial of service attacks. Also added
  gnutls_certificate_set_verify_limits() to override them.
  Issue pointed out by Patrik Hornik <patrik@hornik.sk>.
- Added gnutls_certificate_verify_peers2().

* Version 1.1.11 (2004-07-16)
- Added the '_t' suffix to all exported symbols.
- Fixed bug in RSA encryption, report and patch by Martijn Koster
  <mak@greenhills.co.uk>.
- Corrected a bug in certificate verification. Pointed out by
  Yoann Vandoorselaere <yoann@prelude-ids.org>
- Added the GNUTLS_VERIFY_DO_NOT_ALLOW_SAME flags to the
  verification functions.
- The ephemeral DH and RSA parameters are no longer stored in the
  session resume DB.
- Do not free the SRP (prime and generator) parameters obtained from the
  callback if they are the static ones defined in extra.h
- Eliminated some memory leaks. Reported by Yoann Vandoorselaere.

* Version 1.1.10 (2004-06-12)
- Added gnutls_sign_algorithm_get_name() and gnutls_pk_algorithm_get_name()
- Corrected bug in TLS renegotiation.
- Corrected bug in OpenPGP key loading using a callback.
- gnutls-srpcrypt was renamed to srptool
- Allow handshake requests by the client.
- Automatically disable certificate types that do not have corresponding
  certificates.
- Added gnutls_auth_client_get_type() and gnutls_auth_server_get_type()
- Opencdk library is being included if not found.
- certtool can now add ip address SAN extension.
- certtool has now support for more X.520 DN attribute types.
- Better handling of EOF in gnutls_record_recv().
- _gnutls_deinit() is no longer used. Sessions are not
  automatically removed any more, on abnormal termination.
- Corrected session resuming in SRP ciphersuites.
- Updated to conform to the latest srp draft (draft-ietf-tls-srp-07)
- Added new functions to allow access to the ephemeral
  Diffie Hellman parameters.
- Added the functions gnutls_x509_crt_get_pk_rsa_raw() and
  gnutls_x509_crt_get_pk_dsa_raw() to retrieve parameters from certificates.
- Added the functions gnutls_dh_get_group(), gnutls_dh_get_pubkey() and
  gnutls_rsa_export_get_pubkey() to retrieve parameters of the DH or
  RSA-EXPORT key exchange.
- Some fixes in the session resuming code.
- Added gnutls_openpgp_keyring_check_id().

* Version 1.1.9 (2004-04-14)
- Added support for authority key identifier and the extended key usage
  X.509 extension fields. The certtoool was updated to support them.
- The RC2 cipher is no more included. The one in libgcrypt is now used.
- Added batch support to certtool. Now it can use templates.

* Version 1.1.8 (2004-04-07)
- Implemented all the tests for the SRP group parameters in
  client side. This may lead to incompatibility with very
  old gnutls servers.
- Corrected bug in RSA parameters handling which could cause
  unexpected crashes.
- Optimized the copying of rsa_params.

* Version 1.1.7 (2004-03-29)
- Added gnutls_certificate_set_params_function() and
  gnutls_anon_set_params_function() that set the RSA or DH
  parameters using a callback.
- Added functions gnutls_rsa_params_cpy(), gnutls_dh_params_cpy()
  and gnutls_x509_privkey_cpy().
- Corrected a compilation issue when opencdk was installed in a
  non standard directory.
- Deprecated: gnutls_srp_server_set_select_function(),
  gnutls_certificate_client_set_select_function(), gnutls_srp_server_set_select_function().

* Version 1.1.6 (2004-02-24)
- Several bug fixes, by Arne Thomassen.
- Fixed a bug where 'server name' extension was always sent.

* Version 1.1.5 (2004-01-06)
- Added the gnutls_sign_algorithm type.

* Version 1.1.4 (2004-01-04)
- Improved gnutls-cli's SRP behaviour in SRP ciphersuites.
  If they are of highest priority then the abbreviated handshake
  is used.
- Removed all references of missing files.
- Changed handshake behaviour to send the lowest TLS version
  when an unsupported version was advertized. The current behaviour
  is to send the maximum version we support.
- Corrected problem printing the DC attributes in a DN.

* Version 1.1.3 (2003-12-30)
- Implemented TLS 1.1 (and also obsoleted the TLS 1.0 CBC protection
  hack).

* Version 1.1.2 (2003-12-28)
- Added CRL verification functionality to certtool.
- Corrected the CRL distribution point extension handling.

* Version 1.1.1 (2003-12-26)
- Added PKCS #7 support to certtool utility.
- Added support for reading and generating CRL distribution
  points extensions in certificates.
- Added support for generating CRLs in the library and the
  certtool utility.
- Added support for the Subject Key ID PKIX extension.

* Version 1.1.0 (2003-12-21)
- The error codes GNUTLS_E_NO_TEMPORARY_DH_PARAMS and GNUTLS_E_NO_TEMPORARY_RSA_PARAMS
  are no longer returned by the handshake function. Ciphersuites that
  require temporary parameters are removed when such parameters do not exist.
- Added the callbacks gnutls_certificate_client_retrieve_function() and
  gnutls_certificate_server_retrieve_function(), to allow a client or a server
  to specify certificates for the handshake without storing them to the
  credentials structure.
- Added support for generating and exporting DSA private keys.
- Added gnutls_x509_crt_set_key_usage() and certtool can now set the
  certificate's key usage.
- Added gnutls_openpgp_key_get_key_usage().

* Version 1.0.25 (2005-04-27)
- Corrected bug in record packet parsing that could lead
  to a denial of service attack.
- Corrected bug in RSA key export.

* Version 1.0.24 (2005-01-18)
- Corrected several bugs found by Marcin Garski <mgarski@post.pl>

* Version 1.0.23 (2004-11-13)
- Replace GNU LD version script with Libtool -export-symbols-regex,
  from Joe Orton <joe@manyfish.co.uk>.
- Copy libtasn1 has been updated to version 0.2.11.
- Corrected the write of CRL distribution points.
- It is now possible to generate PKCS#12 structures without private
  keys using "certtool --to-p12", suggested by Fabian Fagerholm
  <fabbe@paniq.net>.

* Version 1.0.22 (2004-10-28)
- Print DN of certificates with unknown characters in them, but in hexform
  only.
- Corrected bug in _gnutls_x509_get_dn_oid(), and returns the
  actual OID.
- Added second precision to the X.509 parsing functions.
- Add parameter --la-file to libgnutls-config and libgnutls-extra-config,
  tiny patch contributed by Joe Orton <joe@manyfish.co.uk>.
- Add pkg-config meta files, suggested by Stéphane LOEUILLET
  <stephane.loeuillet@tiscali.fr>.
- Fix memory initializaion bug in gnutls_certificate_set_x509_trust,
  tiny patch by Aleix Conchillo Flaque <aleix@member.fsf.org>.
- Fix certtool --password for PKCS #12, back ported from 1.1.x branch.
- Fix library order in libgnutls*-config --libs output, to permit
  static linking, reported by Yoann Vandoorselaere
  <yoann@prelude-ids.org>.

* Version 1.0.21 (2004-10-07)
- Fix memory leak in gnutls_certificate_verify_peers and
  gnutls_certificate_free_credentials, report and patch by Simon
  Posnjak <simon.posnjak@cetrtapot.si>.
- Fix crash in `certtool --to-p12 --load-privkey foo', i.e. exporting
  a key and no certificate to PKCS#12.
- Fix objdir != srcdir builds, reported by "Gerrit P. Haase"
  <gp@familiehaase.de>.
- Avoid redefining getpass if system already has it, reported by
  Yoann Vandoorselaere <yoann@prelude-ids.org>.
- Add new example "ex-rfc2818" for certificate verification, from Nikos.
- Known bug: the library require snprintf.

* Version 1.0.20 (2004-08-18)
- Bug fix of padding string in RSA PKCS#1 v1.5 type 2 encryption,
  reported by Robey Pointer <robey@danger.com>.

* Version 1.0.19 (2004-08-09)
- Bug fix of test suite.

* Version 1.0.18 (2004-08-05)
- Added simple self test suite.

* Version 1.0.17 (2004-08-02)
- Updated the SRP authentication to conform to the
  latest (yet unreleased) draft. Unfortunately this breaks
  compatibility with previous versions.
- Changed the makefiles to be more portable.
- Added some default limits in the verification of certificate
  chains, to avoid denial of service attacks. Also added
  gnutls_certificate_set_verify_limits() to override them.
  Issue pointed out by Patrik Hornik <patrik@hornik.sk>.
- Added gnutls_certificate_verify_peers2().

* Version 1.0.16 (2004-07-10)
- Do not free the SRP (prime and generator) parameters obtained from the
  callback if they are the static ones defined in extra.h.
- Eliminated some memory leaks. Reported by Yoann Vandoorselaere.
- Some fixes in the makefiles.

* Version 1.0.15 (2004-06-29)
- Fixed bug in RSA encryption, report and patch by Martijn Koster
  <mak@greenhills.co.uk>.
- Corrected a bug in certificate verification. Pointed out by
  Yoann Vandoorselaere <yoann@prelude-ids.org>.

* Version 1.0.14 (2004-06-12)
- Automatically disable certificate types that do not have corresponding
  certificates.
- Updates in the documentation.
- certtool can now add ip address SAN extension.
- certtool has now support for more X.520 DN attribute types.
- Opencdk library is being included if not found.
- Added gnutls_openpgp_keyring_check_id().
- Corrected a serious bug in the included libtasn1 library.
- Corrected session resuming in SRP ciphersuites.
- Updated to conform to the latest srp draft (draft-ietf-tls-srp-07)
- Added the functions gnutls_x509_crt_get_pk_rsa_raw() and
  gnutls_x509_crt_get_pk_dsa_raw() to retrieve parameters from certificates.
- Some fixes in the session resuming code.

* Version 1.0.13 (2004-04-29)
- Some complilation fixes.
- Added the --xml parameter to the certtool utility.

* Version 1.0.12 (2004-04-23)
- Corrected bug in OpenPGP key loading using a callback.
- Renamed gnutls-srpcrypt to srptool
- Allow handshake requests by the client.
* Things backported from the development branch:
- Added support for authority key identifier and the extended key usage
  X.509 extension fields. The certtoool was updated to support them.
- Added batch support to certtool. Now it can use templates.
- The RC2 cipher is no more included. The one in libgcrypt is now used.

* Version 1.0.11 (2004-04-17)
- Added gnutls_sign_algorithm_get_name() and gnutls_pk_algorithm_get_name()
- Corrected bug in TLS renegotiation.

* Version 1.0.10 (2004-04-03)
- Corrected bug in RSA parameters handling which could cause
  unexpected crashes.
- Corrected bug in SSL 3.0 authentication.

* Version 1.0.9 (2004-03-29)
- Added gnutls_certificate_set_params_function() and
  gnutls_anon_set_params_function() that set the RSA or DH
  parameters using a callback.
- Added functions gnutls_rsa_params_cpy(), gnutls_dh_params_cpy()
  and gnutls_x509_privkey_cpy().
- Corrected a compilation issue when opencdk was installed in a
  non standard directory.
- Documented the changes need in multi-threaded application due
  to the new libgcrypt.

* Version 1.0.8 (2004-02-28)
- Corrected bug in mutual certificate authentication in SSL 3.0.

* Version 1.0.7 (2004-02-25)
- Implemented TLS 1.1 (and also obsoleted the TLS 1.0 CBC protection
  hack).
- Some updates in the documentation.

* Version 1.0.6 (2004-02-12)
* Backported things from the development branch (while maintaining
  backwards compatibility):
- Improved gnutls-cli's SRP behaviour in SRP ciphersuites.
  If they are of highest priority then the abbreviated handshake
  is used.
- The error codes GNUTLS_E_NO_TEMPORARY_DH_PARAMS and GNUTLS_E_NO_TEMPORARY_RSA_PARAMS
  are no longer returned by the handshake function. Ciphersuites that
  require temporary parameters are removed when such parameters do not exist.
- Added the callbacks gnutls_certificate_client_retrieve_function() and
  gnutls_certificate_server_retrieve_function(), to allow a client or a server
  to specify certificates for the handshake without storing them to the
  credentials structure.
- Added support for generating and exporting DSA private keys.

* Version 1.0.5 (2004-02-11)
- Fixed a bug where 'server name' extension was always sent.
* Backported things from the development branch:
- Added CRL verification functionality to certtool.
- Corrected the CRL distribution point extension handling.
- Added PKCS #7 support to certtool utility.
- Added support for reading and generating CRL distribution
  points extensions in certificates.
- Added support for generating CRLs in the library and the
  certtool utility.
- Added support for the Subject Key ID PKIX extension.
- Added the gnutls_sign_algorithm type.

* Version 1.0.4 (2004-01-04)
- Changed handshake behaviour to send the lowest TLS version
  when an unsupported version was advertized. The current behaviour
  is to send the maximum version we support.
- certtool no longer asks the password in unencrypted private
  keys.
- The source is now compiled to use the reentrant libc functions.

* Version 1.0.3 (2003-12-21)
- Corrected bug in gnutls_bye() which made it return an error code
  of INVALID_REQUEST instead of success.
- Corrected a bug in the GNUTLS_KEY key usage definitions.

* Version 1.0.2 (2003-12-18)
- Corrected a bug in the RSA key generation. This was
  generating unusable RSA keys.

* Version 1.0.1 (2003-12-10)
- Some minor fixes in the makefiles. They now include CFLAGS
  from libgcrypt or opencdk if installed in a non standard directory.
- Fixed the SRP detection test in gnutls-cli-debug.
- Added gnutls_rsa_params_export_pkcs1() and gnutls_rsa_params_import_pkcs1().

* Version 1.0.0 (2003-12-04)
- Exported the static SRP group parameters.
- Some fixes in the certificate authenticated SRP ciphersuites.
- Improved the support for draft-ietf-tls-srp-05. The two-phase
  handshake is now fully supported without any interaction with
  the application layer (except for a callback).

* Version 0.9.99 (2003-11-28)
- Some fixes in the gnutls.h header for the gnutls_server_name_set()
  and gnutls_server_name_get() prototypes.
- Exported the gnutls_x509_privkey_sign_data(), gnutls_x509_privkey_verify_data()
  and gnutls_x509_crt_verify_data().
- Some fixes in the openpgp authentication.
- Removed the Twofish cipher.

* Version 0.9.98 (2003-11-16)
- The openssl compatibility layer was moved to gnutls-openssl
  library instead of being included in the gnutls-extra library.
- Added the RIPEMD ciphersuites defined in draft-ietf-tls-openpgp-keys-04.
- Building with openpgp support is now mandatory.
- gnutls4 compatibility header is no longer included by default in
  gnutls.h.
- gnutls8 function usage yields a deprecation warning in gcc3.
- gnutls_x509_*_set_dn_by_oid() and gnutls_x509_*_get_*_dn_by_oid()
  functions have a raw_flag parameter added.
- Added gnutls_x509_*_get_dn_oid() and gnutls_x509_crt_get_extension_oid()
  functions which return the available OIDs.

* Version 0.9.97 (2003-11-11)
- The certtool utility can now generate PKCS #12 structures
  without specifying a certificate.
- Added capability to read CRLs to certtool.
- Corrected some functions which return GNUTLS_E_SHORT_MEMORY_BUFFER
  to properly set the required buffer size.
- Corrected a bug in libgcrypt detection.

* Version 0.9.96 (2003-11-09)
- Some changes to allow compilation with mingw32.
- Several code cleanups.

* Version 0.9.95 (2003-11-02)
- Improved the verification functions. Added new verification
  output flags and removed the unused and redundant ones.
- Improved the OpenPGP key support.
- The prime utility was removed, and its functionality was moved
  to certtool.

* Version 0.9.94 (2003-10-30)
- Added manpages for the included programs.
- Documented and improved the certtool utility.
- Added PKCS #12 support to certtool utility.

* Version 0.9.93 (2003-10-26)
- Corrected some compilation issues.
- Improved the certtool command line utility.

* Version 0.9.92 (2003-10-25)
- The RFC2818 hostname verification is now case insensitive.
- Added support for generating X.509 certificates.
- Added the certtool, a tool for generating X.509 certificates

* Version 0.9.91 (2003-10-17)
- Fixed a compilation issue in the openpgp authentication part.

* Version 0.9.90 (2003-10-08)
- Updated the openpgp key API (depends on the unreleased new
  opencdk).

* Version 0.9.8 (2003-10-02)
- Updated the SRP implementation to follow the latest draft
  (draft-ietf-tls-srp-05).
- Improved the gnutls-cli behaviour in error handling,
  and added a check for the peer's hostname.
- Use versioned symbols in the library (where available).
- RIJNDAEL ciphersuites were renamed to AES.

* Version 0.9.7 (2003-08-25)
- The tex files are now included in the distribution.
- The library can now decrypt PKCS #12 files encrypted with
  the RC2-40 cipher.
- The missing rfc2818_hostname object is now included.
- Several corrections and bug fixes in the library by
  Arne Thomassen <arne@arne-thomassen.de>.
- CR is now allowed in the base64 decoder.

* Version 0.9.6 (2003-06-28)
- Added gnutls_x509_privkey_get_key_id() and gnutls_x509_crt_get_key_id()
  functions which return a unique (per public key) ID. These can
  be used to check if the private key corresponds to a given certificate.
- Corrections in the TLS layer openpgp certificate packet parser.
- Corrected a bug in the record layer buffering, which affected
  the case where external pull function was used. Report and patch
  by Sergey Poznyakoff <gray@Mirddin.farlep.net>.
- Corrected a bug in gnutls-srpcrypt where a non allocated variable
  was freed.
- SRP programs are now built by default.
- Added API to read and write to PKCS #12 structures. Prototypes
  in gnutls/pkcs12.h.
- The gnutls_transport_ptr type was changed to a pointer type (void*).

* Version 0.9.5 (2003-04-06)
- Several improvements in the PKCS #7 handling
- Eliminated several hard coded constants in MPI parameters.

* Version 0.9.4 (2003-03-28)
- Corrected a parsing error in the Certificate request message.
- Corrected behaviour when a certificate request message is received.
  Now a certificate packet is always sent, and in SSL 3.0 cipher suites
  a no_certificate alert is sent instead.
- Added functionality to generate PKCS #7 structures (with certificates).

* Version 0.9.3 (2003-03-24)
- Support for MD2 was dropped.
- Improved the error logging functions, by adding a level, and
  by allowing debugging messages just by increasing the level.
- The diffie Hellman ciphersuites are now of higher priority than
  the plain RSA.
- The RSA premaster secret version check can no longer be disabled.
- Implemented the counter measure discussed in the paper "Attacking
  RSA-based Sessions in SSL/TLS", against the attack described in the
  same paper.
- Added the functions: gnutls_handshake_get_last_in(),
  gnutls_handshake_get_last_out().
- The gnutls_certificate_set_rsa_params() was renamed to
  gnutls_certificate_set_rsa_export_params().
- Added the new functions: gnutls_certificate_set_x509_key()
  gnutls_certificate_set_x509_trust(), gnutls_certificate_set_x509_crl(),
  gnutls_x509_crt_export(), gnutls_x509_crl_export().
- Added support for encoding and decoding PKCS #8 2.0 encrypted
  RSA private keys.

* Version 0.9.2 (2003-03-15)
- Some corrections in the memory mapping code (file is unmapped after
  it is read).
- Added support for PKCS#10 certificate requests generation.

* Version 0.9.1 (2003-03-12)
- Corrected a bug in 64 bit architectures, which affected the
  serial number calculation in the record layer.
- Added gnutls_certificate_free_keys() which deletes all the
  private keys and certificates from the credentials structure.
- Corrected a broken buffer check in _gnutls_io_read_buffered(),
  which caused some unexpected packet length errors. Report and patch
  by Ian Peters <itp@ximian.com>.
- Added ability to generate RSA keys.
- Increased the maximum parameter size in order to read some large keys
  by some CAs. Patch by Ian Peters <itp@ximian.com>.
- Added an strnstr() function and the requirement in some functions to
  use null terminated PEM structures is no more.
- Use mmap() if available to read files.
- Fixed a memory leak in SRP code reported by Rupert Kittinger
  <r.kittinger@efkon.com>.

* Version 0.9.0 (2003-03-03)
- This version is not binary compatible with the previous ones.
- The library notifies the application on empty and illegal SRP usernames,
  so that proper notification (via an alert) is sent to the peer.
- Added ability to send some messages back to the application using
  the gnutls_global_set_log_function().
- gnutls_dh_params_generate() and gnutls_rsa_params_generate() now use
  gnutls_malloc() to allocate the output parameters.
- Added support for MD2 algorithm in certificate signature verification.
- The RSA and DH parameter generation interface was changed. Added
  ability to import and export from and to PKCS3 structures. This
  was needed to read parameters generated using the openssl dhparam tool.
- Several changes in the temporary (DH/RSA) parameter codebase. No DH
  parameters are now included in the library. Also the credentials structure
  can now hold only one temporary parameter of a kind.
- Added a new Certificate, CRL, Private key and PKCS7 structures handling
  API, defined in gnutls/x509.h
- Added gnutls_certificate_set_verify_flags() function to allow setting the
  verification flags in the credentials structure. They will be used in the
  *verify_peers functions.
- Added protection against the new TLS 1.0 record layer timing attack.
- Added support for Certificate revocation lists. Functions defined
  in gnutls/x509.h
- The only functions that were removed are:
  gnutls_x509_certificate_to_xml()
  gnutls_x509_extract_dn_string()
- Ported to libtasn1 0.2.x

* Version 0.8.1 (2003-01-22)
- Improved the SRP support, to prevent attackers guessing the
  available usernames by brute force.
- Improved the SRP detection in gnutls-cli-debug
- Some fixes which now allow compilation.

* Version 0.8.0 (2003-01-20)
- Added gnutls_x509_extract_dn_string() which returns a
  distinguished name in a single string.
- Added gnutls_openpgp_extract_key_name_string() which returns
  an openpgp user ID in a single string.
- Added gnutls_x509_extract_certificate_ca_status() which returns
  the CA status of the given certificate.
- Added SRP-6 support. Follows draft-ietf-tls-srp-04.
- If libtasn1 is not present in the system, it is included in
  the main gnutls library.
- If liblzo is present in the system, then the included minilzo
  will not be used, and libgnutls-extra will depend on liblzo.
- GNUTLS_E_PARSING_ERROR error code was replaced by GNUTLS_E_BASE64_DECODING_ERROR,
  and GNUTLS_E_SRP_PWD_PARSING_ERROR. GNUTLS_E_ASCII_ARMOR_ERROR was also
  replaced by GNUTLS_E_BASE64_DECODING_ERROR.

* Version 0.6.0 (2002-12-08)
- Added "gnutls/compat4.h" header. This is included in gnutls.h
  to emulate the old 0.4.x API.
- Example programs are now stored in doc/examples/
- Several improvements and updates in the documentation.
- Added the certificate authenticated SRP cipher suites.
- gnutls_x509_extract_certificate_dn_string() was updated to return
  an RFC2253 conforming string.
- Added the SRP related functions:
   gnutls_srp_verifier()
   gnutls_srp_base64_encode()
   gnutls_srp_base64_decode()
- Added the function gnutls_srp_set_server_credentials_function()
  to allow retrieving SRP parameters from an external backend - other
  than password files.
- Added the function gnutls_openpgp_set_recv_key_function()
  which can be used to set a callback, to get OpenPGP keys.
- Exported the functions:
   gnutls_malloc()
   gnutls_free()
  which should be used by callback functions.
- Changed the semantics of gnutls_pem_base64_encode_alloc()
  and gnutls_pem_base64_decode_alloc(). In the default case
  were the gnutls library is used with malloc/realloc/free,
  these are binary compatible.

* Version 0.5.11 (2002-11-05)
- Some fixes in 'gnutls-cli' client program to prevent some segmentation
  faults at exit.
- Example programs found in the documentation can now be generated by
  running "make examples" in doc/tex directory.
- Added more descriptive error strings, to gnutls_strerror().
- Documented error codes, and the function reference list is now sorted.
- Optimized buffering code.
- gnutls_x509_extract_certificate_dn_string() was rewritten.
- Added GNUTLS_E_SHORT_MEMORY_BUFFER error code, which is returned in the
  case where the memory buffer provided is not long enough.
- Depends on the new OpenCDK 0.3.2.

* Version 0.5.10 (2002-10-13)
- Updated documentation.
- Added server name extension. This allows clients to specify the
  name of the server they connect to. Useful to HTTPS.
- Several corrections in the code base, mostly in signed/unsigned,
  checkings.

* Version 0.5.9 (2002-10-10)
- Corrected some code which worked fine in gcc 3.2, but not with any
  other compiler.
- Updated 'gnutls-cli' with the '--starttls' option, to allow testing
  starttls implementations.
- Added gnutls_x509_extract_key_pk_algorithm() function which extracts
  the private key type, of a DER encoded key.
- Added gnutls_x509_extract_certificate_dn_string() which returns the
  certificate's distinguished name in a single string.
- Added gnutls_set_default_priority() and gnutls_set_default_export_priority()
  functions, to avoid calling all the *_priority() functions if the defaults
  are acceptable.
- Added int gnutls_x509_check_certificates_hostname() which check whether
  the given hostname matches the owner of the given X.509 certificate.

* Version 0.5.8 (2002-09-25)
- Updated documentation.
- Added gnutls_record_get_direction() which replaces the obsolete
  gnutls_handshake_get_direction().
- Added function to convert error codes to alert descriptions
- Added LZO compression

* Version 0.5.7 (2002-09-11)
- Some fixes in the memory allocation functions (realloc).
- Improved the string functions used in XML certificate generation.
- Removed dependency on libgdbm.
- Corrected bug in gnutls_dh_params_set() which affected
  gnutls_dh_params_deinit().
- Corrected bug in session resuming code in server side.

* Version 0.5.6 (2002-09-06)
- Corrected bugs in SRP implementation, which prevented gnutls
  to interoperate with other implementations. (interoperability testing
  was done by David Taylor)
- Corrected bug in cert_type extension.
- Corrected extension type checks which used an 8 bit extension size,
  instead of 16 bits.
- Added versioning in the XML output of certificate functions.
- Removed the X.509 test suite.

* Version 0.5.5 (2002-09-03)
- Updated the SRP implementation to the latest draft. The blowfish
  crypt implementation was removed, since the new draft does not allow
  other hash algorithms except for the srpsha.
- Renamed all the constructed types in order to have more consistent
  names.
- Improved the certificate and key read functions. Now they can read
  the certificate and the private key from the same file.
- Updated and corrected documentation.

* Version 0.5.4 (2002-08-27)
- Fixes in TLS 1.0 PRF and SSL3 random functions.
- gnutls_handshake_set_exportable_detection() was obsoleted.
- Added gnutls_openpgp_extract_key_id() which returns the key ID.
- Corrected bug in DHE key exchange
- Added support for temporary RSA keys which are needed for the
  export cipher suites.
- Added the TLS_RSA_EXPORT_ARCFOUR_40_MD5 ciphersuite.

* Version 0.5.3 (2002-08-23)
- No changes. Replaces the tarball of 0.5.2 which accidentally contained
  code from the unstable branch.

* Version 0.5.2 (2002-08-22)
- Added an error code that is returned in clients which connect
  to export only servers. This must be enabled using the
  gnutls_handshake_set_exportable_detection() function.
- Updated openssl compatibility layer.
- Added gnutls_handshake_get_direction() function which returns
  the state of the handshake when interrupted.

* Version 0.5.1 (2002-07-17)
- Corrected the m4 macros which used <gnutls.h> instead of
  <gnutls/gnutls.h>
- Documentation fixes
- Added gnutls_transport_set_ptr2() function, which accepts two
  different pointers, to be used while receiving, and
  while sending data.
- Semantic changes in gnutls_record_set_max_size(). The requested
  size is now immediately enforced at the output buffers.
- gnutls_global_init_extra() now fails if the library versions do
  not match.
- Fixes in client and server example programs. Null encryption can
  be used in these programs, to assist in debugging.
- Fixes in zlib compression code.

* Version 0.5.0 (2002-07-06)
- Added X.509 certificate tests in tests/ directory
- Removed stubs for SRP and Anonymous authentication. They served
  no purpose since they are always included, unless it was requested
  not to do so.
- Added gnutls_handshake_set_private_extensions() function. This
  function can be used to enable private (gnutls specific) cipher suites
  and compression algorithms.
- Added check for C99 macro support by the compiler.
- Added functions gnutls_b64_encode_fmt2() and gnutls_b64_decode_fmt2()
- Added the new libtasn1 library.
- Removed the gdbm backend. Applications are now responsible for the
  session resuming backend. The gnutls-serv application contains an
  simple example on how to use gdbm for resuming.
- Headers for the gnutls library are now installed in $(includedir)/gnutls
- Added an OpenSSL compatible interface (with some limitations).
- Added functions to convert DER encoded certificates to XML format.

* Version 0.4.4 (2002-06-24)
- Corrected bug in PKCS-1 RSA encryption which prevented gnutls to encrypt
  using keys of some specific size.

* Version 0.4.3 (2002-05-23)
- The gnutls-extra library now compiles fine, if the opencdk library is
  not present.
- Several bug fixes.
- Added gnutls_global_set_mem_func() function, to set the memory allocation
  functions, if other than the defaults are to be used.
- The default memory allocation functions are now the ones in libc.

* Version 0.4.2 (2002-05-21)
- Separated ASN.1 structures parser documentation and TLS library
  documentation.
- Added gnutls_handshake_set_rsa_pms() function, which disables the
  version check in RSA premaster secret.
- Added gnutls_session_is_resumed() function, which reports if a session
  is a resumed one.
- Added gnutls_state_set_ptr() and gnutls_state_get_ptr() functions, to
  assist in callback functions.
- Replaced the included 1024 bit prime for Diffie Hellman, with a new
  random one.
- Relicensed the library under the GNU Lesser General Public License
- Added gnutls-extra library which contains the GPL covered code of gnutls.

* Version 0.4.1 (2002-04-07)
- Now uses alloca() for temporary variables
- Optimized RSA signing
- Added functions to return the peer's certificate activation and
  expiration time.
- Corrected time function's behaviour (the time value returned no longer
  relate to local timezone).

* Version 0.4.0 (2002-04-01)
- Added support for RFC2630 (PKCS7) X.509 certificate sets
- Added new functions: gnutls_x509_extract_certificate_pk_algorithm(),
  gnutls_openpgp_extract_key_pk_algorithm().
- Several optimizations in the Handshake protocol
- Several optimizations in RSA algorithm
- Unified the return values because of small buffers.

* Version 0.3.92 (2002-03-23)
- Updated documentation
- Combined error codes of ASN.1 parser and gnutls
- Removed GNUTLS_CERT_TRUSTED from the CertificateStatus enumeration
- Added protection against CBC chosen plaintext attack (disabled by default)
- Improved and optimized compression support

* Version 0.3.91 (2002-03-03)
- Added gnutls-cli-debug program
- Corrections in session resumption
- Rehandshake can now handle negotiation of different authentication
  type.
- gnutls-cli, gnutls-serv, gnutls-srpcrypt and gnutls-cli-debug are
  now being installed.

* Version 0.3.90 (2002-02-24)
- Handshake messages are not kept in memory any more. Now we use
  less memory during a handshake
- Added support for certificates with DSA parameters
- Added DHE_DSS cipher suites
- Key exchange methods changed so they do not depend on the
  certificate type. Added certificate type negotiation TLS extension.
- Added openpgp key support (EXPERIMENTAL)
- Improved Diffie Hellman key exchange support.
- Bug fixes in the RSA key exchange.
- Added check for the requested TLS extensions
- TLS extensions now use a 16 bit type field.
- Added a minimal string library to assist in ASN.1 parsing
- Changes in ASN.1 parser to work with the new bison
- Added gnutls_x509_extract_subject_alt_name(), which deprecates
  gnutls_x509_extract_subject_dns_name()
- gnutls_x509_set_trust_(file/mem) can now be called multiple times
- gnutls_srp_server_set_cred_file() can now be called multiple times

* Version 0.3.5 (2002-01-25)
- Corrected the RSA key exchange method, to avoid attacks against
  PKCS-1 formatting.

* Version 0.3.4 (2002-01-20)
- Corrected bugs in DHE_RSA key exchange method

* Version 0.3.3 (2002-01-19)
- Added gnutls_x509pki_verify_certificate()
- Added gnutls_x509pki_set_trust_mem() and gnutls_x509pki_set_key_mem()
- Bug fixes in srpcrypt (based on patch by Marc Huber)
- Bug fixes in the Handshake protocol (based on patch by Guillaume Morin)
- Corrected library versioning

* Version 0.3.2 (2002-01-05)
- Corrected bug which did not allow a client to accept multiple CA names
- Added gnutls_fingerprint()
- Added gnutls_x509pki_extract_certificate_serial()
- Added gnutls_b64_encode_fmt() and gnutls_b64_decode_fmt()
- Corrected behaviour in version advertizing
- Updated documentation
- Prefixed all types in gnutls.h with 'GNUTLS_' to avoid namespace collisions

* Version 0.3.1 (2001-12-21)
- Corrections in the configuration files
- Fixes a bug in anonymous authentication

* Version 0.3.0 (2001-12-17)
- Corrected bug in new integer formatting (now we use the old format again)
- Several corrections and usual cleanups

* Version 0.2.91 (2001-12-10)
- Fixes in MPI handling (fixes possible bug with signed integers)
- Removed name indication extension
- Added gnutls_transport_get_ptr() and gnutls_db_get_ptr()
- Optimizations in server certificate callback.
- Fixes in anonymous authentication
- Corrections in client ciphersuite selection

* Version 0.2.90 (2001-12-07)
- gnutls_handshake(), gnutls_read() etc. functions no longer require
  the 'SOCKET cd' argument. This argument is set using the function
  gnutls_set_transport_ptr().
- introduced gnutls_x509pki_get_peer_certificate_list(). This function returns
  a list containing peer's certificate and issuers DER encoded.
- Updated X.509 certificate handling API
- Added callback to select the server certificate
- More consistent function naming (changes in several function names)
- Buffer overflow checking in ASN.1 structures parser
- Updated documentation

* Version 0.2.11 (2001-11-16)
- Changed the meaning of GNUTLS_E_REHANDSHAKE value. If this value
  is returned, then the caller should perform a handshake or send
  an alert to the peer.
- Made receive buffer dynamic. Normally if no large chunks are received
  it occupies less space.
- Added max_record_size extension
- Bugfixes in session handling
- Improved non blocking IO support in the Handshake Protocol
- Usual bugfixes and cleanups
- Documentation updated (includes ASN.1 documentation)

* Version 0.2.10 (2001-11-05)
- Corrected bugs and improved non blocking IO
- Added hooks to use external database to store sessions
- Usual cleanups

* Version 0.2.9 (2001-10-27)
- AUTH_INFO types and structures were moved to library internals
- AUTH_FAILED is no longer returned in SRP authentication
  (any fatal error in SRP means auth failed)
- Introduced GNUTLS_E_INTERRUPTED
- Added support for non blocking IO
- gnutls_recv() and gnutls_send() are now obsolete
- Changed semantics of gnutls_rehandshake()

* Version 0.2.4 (2001-10-12)
- Better handling of X.509 certificate extensions
- Added DHE_RSA ciphersuites
- Updated the Name Indication (dnsname) extension
- Improvements in Diffie Hellman primes handling

* Version 0.2.3 (2001-09-19)
- Memory optimizations in gnutls_recv()
- Fixed several memory leaks
- Added ability to specify callback for x509 client certificate selection
- Better documentation

* Version 0.2.2 (2001-08-21)
- Several bugfixes (library and documentation)

* Version 0.2.1 (2001-08-07)
- SRP fixes

* Version 0.2.0 (2001-08-07)
- Partial support for X.509v3 Certificate extensions.
- Added Internal memory handlers
- Removed gnutls_x509_set_cn()
- Added X.509 client authentication
- Several bug fixes and protocol fixes

* Version 0.1.9 (2001-07-30)
- Corrected bug(s) in ChangeCipherSpec packet (fixes renegotiate)
- SRP is updated to conform to the newest draft.
- Added support for DNSNAME extension.
- Reentracy fixes in ASN.1 Parsing.
- Optimizations in hash/hmac functions
- (Error) message handling has changed
- Better Protocol Version handling
- Added X.509 Certificate Verification
- gnutls_read() semantics are now closer to read(2) - added EOF
- Documented some part of gnutls in doc/tex/ using Latex

* Version 0.1.4 (2001-06-22)
- Corrected (srp) base64 encoding.
- Changed bcrypt algorithm to include username.
- Added RSA Ciphersuites (no certificate checking).
- Fixes in SSL 2.0 client hello parsing.
- Added ASN.1 and DER parsers.
- Bugfixes in session resuming
- Updated Ciphersuite selection algorithm
- Added internal representation of X.509 structures.
- Added global state

* Version 0.1.3 (2001-06-01)
- Updated API (and the way it is documented - we use inline documentation)
- Added function to access alert messages.
- Added support for renegotiating parameters.
- Better and Faster Resume Database handling.
- Several bugfixes

* Version 0.1.2 (2001-05-14)
- Updated API
- Fixes in extension handling

* Version 0.1.1 (2001-05-13)
- Added compatibility with Stanford's libsrp library

* Version 0.1.0 (2001-05-09)
- Added SSL 2.0 client hello support
- GNUTLS is a gnu library
- Added support for TLS extensions.
- Added support for SRP

* Version 0.0.7 (2001-01-11)
- Added server side session resuming (using gdbm)
- Added twofish algorithm

* Version 0.0.6 (2000-12-20)
- Added client side session resuming
- Better documentation (check doc/API)
- Better socket handling (gnutls can be used with select())
- Some primitive support for non blocking IO and socket options has been added.

* Version 0.0.5 (2000-12-07)
- Added Compression (using ZLIB)
- Added SSL 3.0 support

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