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contrib/pgcrypto/openssl.c
891 строка
20 KB
Tom Lane
pgcrypto: avoid recursive ResourceOwnerForget().
22 июн 2026, 19:59
22 июн 2026, 19:59
80bb0eb
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/* * openssl.c * Wrapper for OpenSSL library. * * Copyright (c) 2001 Marko Kreen * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. 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. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. * * contrib/pgcrypto/openssl.c */ #include "postgres.h" #include <openssl/crypto.h> #include <openssl/evp.h> #include <openssl/err.h> #include <openssl/rand.h> #include "px.h" #include "utils/memutils.h" #include "utils/resowner.h" /* * Max lengths we might want to handle. */ #define MAX_KEY (512/8) #define MAX_IV (128/8) /* * Hashes */ /* * To make sure we don't leak OpenSSL handles, we use the ResourceOwner * mechanism to free them on abort. */ typedef struct OSSLDigest { const EVP_MD *algo; EVP_MD_CTX *ctx; ResourceOwner owner; } OSSLDigest; /* ResourceOwner callbacks to hold OpenSSL digest handles */ static void ResOwnerReleaseOSSLDigest(Datum res); static const ResourceOwnerDesc ossldigest_resowner_desc = { .name = "pgcrypto OpenSSL digest handle", .release_phase = RESOURCE_RELEASE_BEFORE_LOCKS, .release_priority = RELEASE_PRIO_FIRST, .ReleaseResource = ResOwnerReleaseOSSLDigest, .DebugPrint = NULL, /* default message is fine */ }; /* Convenience wrappers over ResourceOwnerRemember/Forget */ static inline void ResourceOwnerRememberOSSLDigest(ResourceOwner owner, OSSLDigest *digest) { ResourceOwnerRemember(owner, PointerGetDatum(digest), &ossldigest_resowner_desc); } static inline void ResourceOwnerForgetOSSLDigest(ResourceOwner owner, OSSLDigest *digest) { ResourceOwnerForget(owner, PointerGetDatum(digest), &ossldigest_resowner_desc); } static void free_openssl_digest(OSSLDigest *digest) { EVP_MD_CTX_destroy(digest->ctx); if (digest->owner != NULL) ResourceOwnerForgetOSSLDigest(digest->owner, digest); pfree(digest); } static unsigned digest_result_size(PX_MD *h) { OSSLDigest *digest = (OSSLDigest *) h->p.ptr; int result = EVP_MD_CTX_size(digest->ctx); if (result < 0) elog(ERROR, "EVP_MD_CTX_size() failed"); return result; } static unsigned digest_block_size(PX_MD *h) { OSSLDigest *digest = (OSSLDigest *) h->p.ptr; int result = EVP_MD_CTX_block_size(digest->ctx); if (result < 0) elog(ERROR, "EVP_MD_CTX_block_size() failed"); return result; } static void digest_reset(PX_MD *h) { OSSLDigest *digest = (OSSLDigest *) h->p.ptr; if (!EVP_DigestInit_ex(digest->ctx, digest->algo, NULL)) elog(ERROR, "EVP_DigestInit_ex() failed"); } static void digest_update(PX_MD *h, const uint8 *data, unsigned dlen) { OSSLDigest *digest = (OSSLDigest *) h->p.ptr; if (!EVP_DigestUpdate(digest->ctx, data, dlen)) elog(ERROR, "EVP_DigestUpdate() failed"); } static void digest_finish(PX_MD *h, uint8 *dst) { OSSLDigest *digest = (OSSLDigest *) h->p.ptr; if (!EVP_DigestFinal_ex(digest->ctx, dst, NULL)) elog(ERROR, "EVP_DigestFinal_ex() failed"); } static void digest_free(PX_MD *h) { OSSLDigest *digest = (OSSLDigest *) h->p.ptr; free_openssl_digest(digest); pfree(h); } /* PUBLIC functions */ int px_find_digest(const char *name, PX_MD **res) { const EVP_MD *md; EVP_MD_CTX *ctx; PX_MD *h; OSSLDigest *digest; md = EVP_get_digestbyname(name); if (md == NULL) return PXE_NO_HASH; ResourceOwnerEnlarge(CurrentResourceOwner); /* * Create an OSSLDigest object, an OpenSSL MD object, and a PX_MD object. * The order is crucial, to make sure we don't leak anything on * out-of-memory or other error. */ digest = MemoryContextAlloc(TopMemoryContext, sizeof(*digest)); ctx = EVP_MD_CTX_create(); if (!ctx) { pfree(digest); return PXE_CIPHER_INIT; } if (EVP_DigestInit_ex(ctx, md, NULL) == 0) { EVP_MD_CTX_destroy(ctx); pfree(digest); return PXE_CIPHER_INIT; } digest->algo = md; digest->ctx = ctx; digest->owner = CurrentResourceOwner; ResourceOwnerRememberOSSLDigest(digest->owner, digest); /* The PX_MD object is allocated in the current memory context. */ h = palloc_object(PX_MD); h->result_size = digest_result_size; h->block_size = digest_block_size; h->reset = digest_reset; h->update = digest_update; h->finish = digest_finish; h->free = digest_free; h->p.ptr = digest; *res = h; return 0; } /* ResourceOwner callbacks for OSSLDigest */ static void ResOwnerReleaseOSSLDigest(Datum res) { OSSLDigest *digest = (OSSLDigest *) DatumGetPointer(res); digest->owner = NULL; free_openssl_digest(digest); } /* * Ciphers * * We use OpenSSL's EVP* family of functions for these. */ /* * prototype for the EVP functions that return an algorithm, e.g. * EVP_aes_128_cbc(). */ typedef const EVP_CIPHER *(*ossl_EVP_cipher_func) (void); /* * ossl_cipher contains the static information about each cipher. */ struct ossl_cipher { int (*init) (PX_Cipher *c, const uint8 *key, unsigned klen, const uint8 *iv); ossl_EVP_cipher_func cipher_func; int block_size; int max_key_size; }; /* * OSSLCipher contains the state for using a cipher. A separate OSSLCipher * object is allocated in each px_find_cipher() call. * * To make sure we don't leak OpenSSL handles, we use the ResourceOwner * mechanism to free them on abort. */ typedef struct OSSLCipher { EVP_CIPHER_CTX *evp_ctx; const EVP_CIPHER *evp_ciph; uint8 key[MAX_KEY]; uint8 iv[MAX_IV]; unsigned klen; unsigned init; const struct ossl_cipher *ciph; ResourceOwner owner; } OSSLCipher; /* ResourceOwner callbacks to hold OpenSSL cipher state */ static void ResOwnerReleaseOSSLCipher(Datum res); static const ResourceOwnerDesc osslcipher_resowner_desc = { .name = "pgcrypto OpenSSL cipher handle", .release_phase = RESOURCE_RELEASE_BEFORE_LOCKS, .release_priority = RELEASE_PRIO_FIRST, .ReleaseResource = ResOwnerReleaseOSSLCipher, .DebugPrint = NULL, /* default message is fine */ }; /* Convenience wrappers over ResourceOwnerRemember/Forget */ static inline void ResourceOwnerRememberOSSLCipher(ResourceOwner owner, OSSLCipher *od) { ResourceOwnerRemember(owner, PointerGetDatum(od), &osslcipher_resowner_desc); } static inline void ResourceOwnerForgetOSSLCipher(ResourceOwner owner, OSSLCipher *od) { ResourceOwnerForget(owner, PointerGetDatum(od), &osslcipher_resowner_desc); } static void free_openssl_cipher(OSSLCipher *od) { EVP_CIPHER_CTX_free(od->evp_ctx); if (od->owner != NULL) ResourceOwnerForgetOSSLCipher(od->owner, od); pfree(od); } /* Common routines for all algorithms */ static unsigned gen_ossl_block_size(PX_Cipher *c) { OSSLCipher *od = (OSSLCipher *) c->ptr; return od->ciph->block_size; } static unsigned gen_ossl_key_size(PX_Cipher *c) { OSSLCipher *od = (OSSLCipher *) c->ptr; return od->ciph->max_key_size; } static unsigned gen_ossl_iv_size(PX_Cipher *c) { unsigned ivlen; OSSLCipher *od = (OSSLCipher *) c->ptr; ivlen = od->ciph->block_size; return ivlen; } static void gen_ossl_free(PX_Cipher *c) { OSSLCipher *od = (OSSLCipher *) c->ptr; free_openssl_cipher(od); pfree(c); } static int gen_ossl_decrypt(PX_Cipher *c, int padding, const uint8 *data, unsigned dlen, uint8 *res, unsigned *rlen) { OSSLCipher *od = c->ptr; int outlen, outlen2; if (!od->init) { if (!EVP_DecryptInit_ex(od->evp_ctx, od->evp_ciph, NULL, NULL, NULL)) return PXE_CIPHER_INIT; if (!EVP_CIPHER_CTX_set_padding(od->evp_ctx, padding)) return PXE_CIPHER_INIT; if (!EVP_CIPHER_CTX_set_key_length(od->evp_ctx, od->klen)) return PXE_CIPHER_INIT; if (!EVP_DecryptInit_ex(od->evp_ctx, NULL, NULL, od->key, od->iv)) return PXE_CIPHER_INIT; od->init = true; } if (!EVP_DecryptUpdate(od->evp_ctx, res, &outlen, data, dlen)) return PXE_DECRYPT_FAILED; if (!EVP_DecryptFinal_ex(od->evp_ctx, res + outlen, &outlen2)) return PXE_DECRYPT_FAILED; *rlen = outlen + outlen2; return 0; } static int gen_ossl_encrypt(PX_Cipher *c, int padding, const uint8 *data, unsigned dlen, uint8 *res, unsigned *rlen) { OSSLCipher *od = c->ptr; int outlen, outlen2; if (!od->init) { if (!EVP_EncryptInit_ex(od->evp_ctx, od->evp_ciph, NULL, NULL, NULL)) return PXE_CIPHER_INIT; if (!EVP_CIPHER_CTX_set_padding(od->evp_ctx, padding)) return PXE_CIPHER_INIT; if (!EVP_CIPHER_CTX_set_key_length(od->evp_ctx, od->klen)) return PXE_CIPHER_INIT; if (!EVP_EncryptInit_ex(od->evp_ctx, NULL, NULL, od->key, od->iv)) return PXE_CIPHER_INIT; od->init = true; } if (!EVP_EncryptUpdate(od->evp_ctx, res, &outlen, data, dlen)) return PXE_ENCRYPT_FAILED; if (!EVP_EncryptFinal_ex(od->evp_ctx, res + outlen, &outlen2)) return PXE_ENCRYPT_FAILED; *rlen = outlen + outlen2; return 0; } /* Blowfish */ /* * Check if strong crypto is supported. Some OpenSSL installations * support only short keys and unfortunately BF_set_key does not return any * error value. This function tests if is possible to use strong key. */ static int bf_check_supported_key_len(void) { static const uint8 key[56] = { 0xf0, 0xe1, 0xd2, 0xc3, 0xb4, 0xa5, 0x96, 0x87, 0x78, 0x69, 0x5a, 0x4b, 0x3c, 0x2d, 0x1e, 0x0f, 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77, 0x04, 0x68, 0x91, 0x04, 0xc2, 0xfd, 0x3b, 0x2f, 0x58, 0x40, 0x23, 0x64, 0x1a, 0xba, 0x61, 0x76, 0x1f, 0x1f, 0x1f, 0x1f, 0x0e, 0x0e, 0x0e, 0x0e, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; static const uint8 data[8] = {0xfe, 0xdc, 0xba, 0x98, 0x76, 0x54, 0x32, 0x10}; static const uint8 res[8] = {0xc0, 0x45, 0x04, 0x01, 0x2e, 0x4e, 0x1f, 0x53}; uint8 out[8]; EVP_CIPHER_CTX *evp_ctx; int outlen; int status = 0; /* encrypt with 448bits key and verify output */ evp_ctx = EVP_CIPHER_CTX_new(); if (!evp_ctx) return 0; if (!EVP_EncryptInit_ex(evp_ctx, EVP_bf_ecb(), NULL, NULL, NULL)) goto leave; if (!EVP_CIPHER_CTX_set_key_length(evp_ctx, 56)) goto leave; if (!EVP_EncryptInit_ex(evp_ctx, NULL, NULL, key, NULL)) goto leave; if (!EVP_EncryptUpdate(evp_ctx, out, &outlen, data, 8)) goto leave; if (memcmp(out, res, 8) != 0) goto leave; /* Output does not match -> strong cipher is * not supported */ status = 1; leave: EVP_CIPHER_CTX_free(evp_ctx); return status; } static int bf_init(PX_Cipher *c, const uint8 *key, unsigned klen, const uint8 *iv) { OSSLCipher *od = c->ptr; unsigned bs = gen_ossl_block_size(c); static int bf_is_strong = -1; /* * Test if key len is supported. BF_set_key silently cut large keys and it * could be a problem when user transfer encrypted data from one server to * another. */ if (bf_is_strong == -1) bf_is_strong = bf_check_supported_key_len(); if (!bf_is_strong && klen > 16) return PXE_KEY_TOO_BIG; /* Key len is supported. We can use it. */ od->klen = klen; memcpy(od->key, key, klen); if (iv) memcpy(od->iv, iv, bs); else memset(od->iv, 0, bs); return 0; } /* DES */ static int ossl_des_init(PX_Cipher *c, const uint8 *key, unsigned klen, const uint8 *iv) { OSSLCipher *od = c->ptr; unsigned bs = gen_ossl_block_size(c); od->klen = 8; memset(od->key, 0, 8); memcpy(od->key, key, klen > 8 ? 8 : klen); if (iv) memcpy(od->iv, iv, bs); else memset(od->iv, 0, bs); return 0; } /* DES3 */ static int ossl_des3_init(PX_Cipher *c, const uint8 *key, unsigned klen, const uint8 *iv) { OSSLCipher *od = c->ptr; unsigned bs = gen_ossl_block_size(c); od->klen = 24; memset(od->key, 0, 24); memcpy(od->key, key, klen > 24 ? 24 : klen); if (iv) memcpy(od->iv, iv, bs); else memset(od->iv, 0, bs); return 0; } /* CAST5 */ static int ossl_cast_init(PX_Cipher *c, const uint8 *key, unsigned klen, const uint8 *iv) { OSSLCipher *od = c->ptr; unsigned bs = gen_ossl_block_size(c); od->klen = klen; memcpy(od->key, key, klen); if (iv) memcpy(od->iv, iv, bs); else memset(od->iv, 0, bs); return 0; } /* AES */ static int ossl_aes_init(PX_Cipher *c, const uint8 *key, unsigned klen, const uint8 *iv) { OSSLCipher *od = c->ptr; unsigned bs = gen_ossl_block_size(c); if (klen <= 128 / 8) od->klen = 128 / 8; else if (klen <= 192 / 8) od->klen = 192 / 8; else if (klen <= 256 / 8) od->klen = 256 / 8; else return PXE_KEY_TOO_BIG; memcpy(od->key, key, klen); if (iv) memcpy(od->iv, iv, bs); else memset(od->iv, 0, bs); return 0; } static int ossl_aes_ecb_init(PX_Cipher *c, const uint8 *key, unsigned klen, const uint8 *iv) { OSSLCipher *od = c->ptr; int err; err = ossl_aes_init(c, key, klen, iv); if (err) return err; switch (od->klen) { case 128 / 8: od->evp_ciph = EVP_aes_128_ecb(); break; case 192 / 8: od->evp_ciph = EVP_aes_192_ecb(); break; case 256 / 8: od->evp_ciph = EVP_aes_256_ecb(); break; default: /* shouldn't happen */ err = PXE_CIPHER_INIT; break; } return err; } static int ossl_aes_cbc_init(PX_Cipher *c, const uint8 *key, unsigned klen, const uint8 *iv) { OSSLCipher *od = c->ptr; int err; err = ossl_aes_init(c, key, klen, iv); if (err) return err; switch (od->klen) { case 128 / 8: od->evp_ciph = EVP_aes_128_cbc(); break; case 192 / 8: od->evp_ciph = EVP_aes_192_cbc(); break; case 256 / 8: od->evp_ciph = EVP_aes_256_cbc(); break; default: /* shouldn't happen */ err = PXE_CIPHER_INIT; break; } return err; } static int ossl_aes_cfb_init(PX_Cipher *c, const uint8 *key, unsigned klen, const uint8 *iv) { OSSLCipher *od = c->ptr; int err; err = ossl_aes_init(c, key, klen, iv); if (err) return err; switch (od->klen) { case 128 / 8: od->evp_ciph = EVP_aes_128_cfb(); break; case 192 / 8: od->evp_ciph = EVP_aes_192_cfb(); break; case 256 / 8: od->evp_ciph = EVP_aes_256_cfb(); break; default: /* shouldn't happen */ err = PXE_CIPHER_INIT; break; } return err; } /* * aliases */ static PX_Alias ossl_aliases[] = { {"bf", "bf-cbc"}, {"blowfish", "bf-cbc"}, {"blowfish-cbc", "bf-cbc"}, {"blowfish-ecb", "bf-ecb"}, {"blowfish-cfb", "bf-cfb"}, {"des", "des-cbc"}, {"3des", "des3-cbc"}, {"3des-ecb", "des3-ecb"}, {"3des-cbc", "des3-cbc"}, {"cast5", "cast5-cbc"}, {"aes", "aes-cbc"}, {"rijndael", "aes-cbc"}, {"rijndael-cbc", "aes-cbc"}, {"rijndael-ecb", "aes-ecb"}, {"rijndael-cfb", "aes-cfb"}, {NULL} }; static const struct ossl_cipher ossl_bf_cbc = { bf_init, EVP_bf_cbc, 64 / 8, 448 / 8 }; static const struct ossl_cipher ossl_bf_ecb = { bf_init, EVP_bf_ecb, 64 / 8, 448 / 8 }; static const struct ossl_cipher ossl_bf_cfb = { bf_init, EVP_bf_cfb, 64 / 8, 448 / 8 }; static const struct ossl_cipher ossl_des_ecb = { ossl_des_init, EVP_des_ecb, 64 / 8, 64 / 8 }; static const struct ossl_cipher ossl_des_cbc = { ossl_des_init, EVP_des_cbc, 64 / 8, 64 / 8 }; static const struct ossl_cipher ossl_des3_ecb = { ossl_des3_init, EVP_des_ede3_ecb, 64 / 8, 192 / 8 }; static const struct ossl_cipher ossl_des3_cbc = { ossl_des3_init, EVP_des_ede3_cbc, 64 / 8, 192 / 8 }; static const struct ossl_cipher ossl_cast_ecb = { ossl_cast_init, EVP_cast5_ecb, 64 / 8, 128 / 8 }; static const struct ossl_cipher ossl_cast_cbc = { ossl_cast_init, EVP_cast5_cbc, 64 / 8, 128 / 8 }; static const struct ossl_cipher ossl_aes_ecb = { ossl_aes_ecb_init, NULL, /* EVP_aes_XXX_ecb(), determined in init * function */ 128 / 8, 256 / 8 }; static const struct ossl_cipher ossl_aes_cbc = { ossl_aes_cbc_init, NULL, /* EVP_aes_XXX_cbc(), determined in init * function */ 128 / 8, 256 / 8 }; static const struct ossl_cipher ossl_aes_cfb = { ossl_aes_cfb_init, NULL, /* EVP_aes_XXX_cfb(), determined in init * function */ 128 / 8, 256 / 8 }; /* * Special handlers */ struct ossl_cipher_lookup { const char *name; const struct ossl_cipher *ciph; }; static const struct ossl_cipher_lookup ossl_cipher_types[] = { {"bf-cbc", &ossl_bf_cbc}, {"bf-ecb", &ossl_bf_ecb}, {"bf-cfb", &ossl_bf_cfb}, {"des-ecb", &ossl_des_ecb}, {"des-cbc", &ossl_des_cbc}, {"des3-ecb", &ossl_des3_ecb}, {"des3-cbc", &ossl_des3_cbc}, {"cast5-ecb", &ossl_cast_ecb}, {"cast5-cbc", &ossl_cast_cbc}, {"aes-ecb", &ossl_aes_ecb}, {"aes-cbc", &ossl_aes_cbc}, {"aes-cfb", &ossl_aes_cfb}, {NULL} }; /* PUBLIC functions */ int px_find_cipher(const char *name, PX_Cipher **res) { const struct ossl_cipher_lookup *i; PX_Cipher *c = NULL; EVP_CIPHER_CTX *ctx; OSSLCipher *od; name = px_resolve_alias(ossl_aliases, name); for (i = ossl_cipher_types; i->name; i++) if (strcmp(i->name, name) == 0) break; if (i->name == NULL) return PXE_NO_CIPHER; ResourceOwnerEnlarge(CurrentResourceOwner); /* * Create an OSSLCipher object, an EVP_CIPHER_CTX object and a PX_Cipher. * The order is crucial, to make sure we don't leak anything on * out-of-memory or other error. */ od = MemoryContextAllocZero(TopMemoryContext, sizeof(*od)); od->ciph = i->ciph; /* Allocate an EVP_CIPHER_CTX object. */ ctx = EVP_CIPHER_CTX_new(); if (!ctx) { pfree(od); return PXE_CIPHER_INIT; } od->evp_ctx = ctx; od->owner = CurrentResourceOwner; ResourceOwnerRememberOSSLCipher(od->owner, od); if (i->ciph->cipher_func) od->evp_ciph = i->ciph->cipher_func(); /* The PX_Cipher is allocated in current memory context */ c = palloc_object(PX_Cipher); c->block_size = gen_ossl_block_size; c->key_size = gen_ossl_key_size; c->iv_size = gen_ossl_iv_size; c->free = gen_ossl_free; c->init = od->ciph->init; c->encrypt = gen_ossl_encrypt; c->decrypt = gen_ossl_decrypt; c->ptr = od; *res = c; return 0; } /* ResourceOwner callbacks for OSSLCipher */ static void ResOwnerReleaseOSSLCipher(Datum res) { OSSLCipher *cipher = (OSSLCipher *) DatumGetPointer(res); cipher->owner = NULL; free_openssl_cipher(cipher); } /* * CheckFIPSMode * * Returns the FIPS mode of the underlying OpenSSL installation. */ bool CheckFIPSMode(void) { int fips_enabled = 0; /* * EVP_default_properties_is_fips_enabled was added in OpenSSL 3.0, before * that FIPS_mode() was used to test for FIPS being enabled. The last * upstream OpenSSL version before 3.0 which supported FIPS was 1.0.2, but * there are forks of 1.1.1 which are FIPS validated so we still need to * test with FIPS_mode() even though we don't support 1.0.2. */ fips_enabled = #if OPENSSL_VERSION_NUMBER >= 0x30000000L EVP_default_properties_is_fips_enabled(NULL); #else FIPS_mode(); #endif return (fips_enabled == 1); } /* * CheckBuiltinCryptoMode * * Function for erroring out in case built-in crypto is executed when the user * has disabled it. If builtin_crypto_enabled is set to BC_OFF or BC_FIPS and * OpenSSL is operating in FIPS mode the function will error out, else the * query executing built-in crypto can proceed. */ void CheckBuiltinCryptoMode(void) { if (builtin_crypto_enabled == BC_ON) return; if (builtin_crypto_enabled == BC_OFF) ereport(ERROR, errmsg("use of built-in crypto functions is disabled")); Assert(builtin_crypto_enabled == BC_FIPS); if (CheckFIPSMode() == true) ereport(ERROR, errmsg("use of non-FIPS validated crypto not allowed when OpenSSL is in FIPS mode")); }