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libssh2
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libssh2-1.6.0
src/libgcrypt.h
160 строк
6 KB
Hannes Domani
kex: fix libgcrypt memory leaks of bignum
03 апр 2015, 19:39
03 апр 2015, 19:39
09c5e59
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/* * Copyright (C) 2008, 2009, 2010 Simon Josefsson * Copyright (C) 2006, 2007, The Written Word, Inc. * All rights reserved. * * Redistribution and use in source and binary forms, * with or without modification, are permitted provided * that the following conditions are met: * * Redistributions of source code must retain the above * copyright notice, this list of conditions and the * following disclaimer. * * Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials * provided with the distribution. * * Neither the name of the copyright holder nor the names * of any other contributors may be used to endorse or * promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY * OF SUCH DAMAGE. */ #include <gcrypt.h> #define LIBSSH2_MD5 1 #define LIBSSH2_HMAC_RIPEMD 1 #define LIBSSH2_AES 1 #define LIBSSH2_AES_CTR 1 #define LIBSSH2_BLOWFISH 1 #define LIBSSH2_RC4 1 #define LIBSSH2_CAST 1 #define LIBSSH2_3DES 1 #define LIBSSH2_RSA 1 #define LIBSSH2_DSA 1 #define MD5_DIGEST_LENGTH 16 #define SHA_DIGEST_LENGTH 20 #define _libssh2_random(buf, len) \ (gcry_randomize ((buf), (len), GCRY_STRONG_RANDOM), 1) #define libssh2_sha1_ctx gcry_md_hd_t /* returns 0 in case of failure */ #define libssh2_sha1_init(ctx) \ (GPG_ERR_NO_ERROR == gcry_md_open (ctx, GCRY_MD_SHA1, 0)) #define libssh2_sha1_update(ctx, data, len) \ gcry_md_write (ctx, (unsigned char *) data, len) #define libssh2_sha1_final(ctx, out) \ memcpy (out, gcry_md_read (ctx, 0), SHA_DIGEST_LENGTH), gcry_md_close (ctx) #define libssh2_sha1(message, len, out) \ gcry_md_hash_buffer (GCRY_MD_SHA1, out, message, len) #define libssh2_md5_ctx gcry_md_hd_t /* returns 0 in case of failure */ #define libssh2_md5_init(ctx) \ (GPG_ERR_NO_ERROR == gcry_md_open (ctx, GCRY_MD_MD5, 0)) #define libssh2_md5_update(ctx, data, len) \ gcry_md_write (ctx, (unsigned char *) data, len) #define libssh2_md5_final(ctx, out) \ memcpy (out, gcry_md_read (ctx, 0), MD5_DIGEST_LENGTH), gcry_md_close (ctx) #define libssh2_md5(message, len, out) \ gcry_md_hash_buffer (GCRY_MD_MD5, out, message, len) #define libssh2_hmac_ctx gcry_md_hd_t #define libssh2_hmac_ctx_init(ctx) #define libssh2_hmac_sha1_init(ctx, key, keylen) \ gcry_md_open (ctx, GCRY_MD_SHA1, GCRY_MD_FLAG_HMAC), \ gcry_md_setkey (*ctx, key, keylen) #define libssh2_hmac_md5_init(ctx, key, keylen) \ gcry_md_open (ctx, GCRY_MD_MD5, GCRY_MD_FLAG_HMAC), \ gcry_md_setkey (*ctx, key, keylen) #define libssh2_hmac_ripemd160_init(ctx, key, keylen) \ gcry_md_open (ctx, GCRY_MD_RMD160, GCRY_MD_FLAG_HMAC), \ gcry_md_setkey (*ctx, key, keylen) #define libssh2_hmac_update(ctx, data, datalen) \ gcry_md_write (ctx, (unsigned char *) data, datalen) #define libssh2_hmac_final(ctx, data) \ memcpy (data, gcry_md_read (ctx, 0), \ gcry_md_get_algo_dlen (gcry_md_get_algo (ctx))) #define libssh2_hmac_cleanup(ctx) gcry_md_close (*ctx); #define libssh2_crypto_init() gcry_control (GCRYCTL_DISABLE_SECMEM) #define libssh2_crypto_exit() #define libssh2_rsa_ctx struct gcry_sexp #define _libssh2_rsa_free(rsactx) gcry_sexp_release (rsactx) #define libssh2_dsa_ctx struct gcry_sexp #define _libssh2_dsa_free(dsactx) gcry_sexp_release (dsactx) #define _libssh2_cipher_type(name) int name #define _libssh2_cipher_ctx gcry_cipher_hd_t #define _libssh2_gcry_ciphermode(c,m) ((c << 8) | m) #define _libssh2_gcry_cipher(c) (c >> 8) #define _libssh2_gcry_mode(m) (m & 0xFF) #define _libssh2_cipher_aes256ctr \ _libssh2_gcry_ciphermode(GCRY_CIPHER_AES256, GCRY_CIPHER_MODE_CTR) #define _libssh2_cipher_aes192ctr \ _libssh2_gcry_ciphermode(GCRY_CIPHER_AES192, GCRY_CIPHER_MODE_CTR) #define _libssh2_cipher_aes128ctr \ _libssh2_gcry_ciphermode(GCRY_CIPHER_AES128, GCRY_CIPHER_MODE_CTR) #define _libssh2_cipher_aes256 \ _libssh2_gcry_ciphermode(GCRY_CIPHER_AES256, GCRY_CIPHER_MODE_CBC) #define _libssh2_cipher_aes192 \ _libssh2_gcry_ciphermode(GCRY_CIPHER_AES192, GCRY_CIPHER_MODE_CBC) #define _libssh2_cipher_aes128 \ _libssh2_gcry_ciphermode(GCRY_CIPHER_AES128, GCRY_CIPHER_MODE_CBC) #define _libssh2_cipher_blowfish \ _libssh2_gcry_ciphermode(GCRY_CIPHER_BLOWFISH, GCRY_CIPHER_MODE_CBC) #define _libssh2_cipher_arcfour \ _libssh2_gcry_ciphermode(GCRY_CIPHER_ARCFOUR, GCRY_CIPHER_MODE_STREAM) #define _libssh2_cipher_cast5 \ _libssh2_gcry_ciphermode(GCRY_CIPHER_CAST5, GCRY_CIPHER_MODE_CBC) #define _libssh2_cipher_3des \ _libssh2_gcry_ciphermode(GCRY_CIPHER_3DES, GCRY_CIPHER_MODE_CBC) #define _libssh2_cipher_dtor(ctx) gcry_cipher_close(*(ctx)) #define _libssh2_bn struct gcry_mpi #define _libssh2_bn_ctx int #define _libssh2_bn_ctx_new() 0 #define _libssh2_bn_ctx_free(bnctx) ((void)0) #define _libssh2_bn_init() gcry_mpi_new(0) #define _libssh2_bn_init_from_bin() NULL /* because gcry_mpi_scan() creates a new bignum */ #define _libssh2_bn_rand(bn, bits, top, bottom) gcry_mpi_randomize (bn, bits, GCRY_WEAK_RANDOM) #define _libssh2_bn_mod_exp(r, a, p, m, ctx) gcry_mpi_powm (r, a, p, m) #define _libssh2_bn_set_word(bn, val) gcry_mpi_set_ui(bn, val) #define _libssh2_bn_from_bin(bn, len, val) gcry_mpi_scan(&((bn)), GCRYMPI_FMT_USG, val, len, NULL) #define _libssh2_bn_to_bin(bn, val) gcry_mpi_print (GCRYMPI_FMT_USG, val, _libssh2_bn_bytes(bn), NULL, bn) #define _libssh2_bn_bytes(bn) (gcry_mpi_get_nbits (bn) / 8 + ((gcry_mpi_get_nbits (bn) % 8 == 0) ? 0 : 1)) #define _libssh2_bn_bits(bn) gcry_mpi_get_nbits (bn) #define _libssh2_bn_free(bn) gcry_mpi_release(bn)