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/* Copyright (c) 2012, 2025, Oracle and/or its affiliates.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License, version 2.0,
as published by the Free Software Foundation.
This program is designed to work with certain software (including
but not limited to OpenSSL) that is licensed under separate terms,
as designated in a particular file or component or in included license
documentation. The authors of MySQL hereby grant you an additional
permission to link the program and your derivative works with the
separately licensed software that they have either included with
the program or referenced in the documentation.
Without limiting anything contained in the foregoing, this file,
which is part of C Driver for MySQL (Connector/C), is also subject to the
Universal FOSS Exception, version 1.0, a copy of which can be found at
http://oss.oracle.com/licenses/universal-foss-exception.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License, version 2.0, for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
/**
@file mysys/my_md5.cc
Wrapper functions for OpenSSL.
*/
#include "my_md5.h"
#include <openssl/crypto.h>
#if OPENSSL_VERSION_NUMBER >= 0x30000000L
#include <openssl/evp.h>
#include <openssl/provider.h>
#else
#include <openssl/md5.h>
#endif /* OPENSSL_VERSION_NUMBER >= 0x30000000L */
static void my_md5_hash(unsigned char *digest, unsigned const char *buf,
size_t len) {
#if OPENSSL_VERSION_NUMBER >= 0x30000000L
/*
EVP_Digest() is a wrapper around the EVP_DigestInit_ex(),
EVP_Update() and EVP_Final_ex() functions.
*/
EVP_Digest(buf, len, digest, nullptr, EVP_md5(), nullptr);
#else /* OPENSSL_VERSION_NUMBER >= 0x30000000L */
MD5_CTX ctx;
MD5_Init(&ctx);
MD5_Update(&ctx, buf, len);
MD5_Final(digest, &ctx);
#endif /* OPENSSL_VERSION_NUMBER >= 0x30000000L */
}
/**
Wrapper function to compute MD5 message digest.
@param [out] digest Computed MD5 digest
@param [in] buf Message to be computed
@param [in] len Length of the message
@return 0 when MD5 hash function called successfully
1 when MD5 hash function doesn't called because of fips
mode (ON/STRICT)
*/
int compute_md5_hash(char *digest, const char *buf, size_t len) {
int retval = 0;
#if OPENSSL_VERSION_NUMBER >= 0x30000000L
int fips_mode = EVP_default_properties_is_fips_enabled(nullptr) &&
OSSL_PROVIDER_available(nullptr, "fips");
#else /* OPENSSL_VERSION_NUMBER >= 0x30000000L */
int fips_mode = FIPS_mode();
#endif /* OPENSSL_VERSION_NUMBER >= 0x30000000L */
/* If fips mode is ON/STRICT restricted method calls will result into abort,
* skipping call. */
if (fips_mode == 0) {
my_md5_hash((unsigned char *)digest, (unsigned const char *)buf, len);
} else {
retval = 1;
}
return retval;
}
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