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/* Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
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 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,
51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA */
/**
@file
@brief
Wrapper functions for OpenSSL, YaSSL implementations. Also provides a
Compatibility layer to make available YaSSL's SHA1 implementation.
*/
#include <my_global.h>
#include <sha1.h>
#include <stdarg.h>
#if defined(HAVE_YASSL)
#include "sha.hpp"
/**
Compute SHA1 message digest using YaSSL.
@param digest [out] Computed SHA1 digest
@param buf [in] Message to be computed
@param len [in] Length of the message
@return void
*/
void mysql_sha1_yassl(uint8 *digest, const char *buf, int len)
{
TaoCrypt::SHA hasher;
hasher.Update((const TaoCrypt::byte *) buf, len);
hasher.Final ((TaoCrypt::byte *) digest);
}
/**
Compute SHA1 message digest for two messages in order to
emulate sha1(msg1, msg2) using YaSSL.
@param digest [out] Computed SHA1 digest
@param buf1 [in] First message
@param len1 [in] Length of first message
@param buf2 [in] Second message
@param len2 [in] Length of second message
@return void
*/
void mysql_sha1_multi_yassl(uint8 *digest, va_list args)
{
const char *str;
TaoCrypt::SHA hasher;
for (str= va_arg(args, const char*); str; str= va_arg(args, const char*))
{
hasher.Update((const TaoCrypt::byte *) str, va_arg(args, size_t));
}
hasher.Final((TaoCrypt::byte *) digest);
}
#elif defined(HAVE_OPENSSL)
#include <openssl/sha.h>
int mysql_sha1_reset(SHA_CTX *context)
{
return SHA1_Init(context);
}
int mysql_sha1_input(SHA_CTX *context, const uint8 *message_array,
unsigned length)
{
return SHA1_Update(context, message_array, length);
}
int mysql_sha1_result(SHA_CTX *context,
uint8 Message_Digest[SHA1_HASH_SIZE])
{
return SHA1_Final(Message_Digest, context);
}
#endif /* HAVE_YASSL */
/**
Wrapper function to compute SHA1 message digest.
@param digest [out] Computed SHA1 digest
@param buf [in] Message to be computed
@param len [in] Length of the message
@return void
*/
void my_sha1(uint8 *digest, const char *buf, size_t len)
{
#if defined(HAVE_YASSL)
mysql_sha1_yassl(digest, buf, len);
#elif defined(HAVE_OPENSSL)
SHA_CTX sha1_context;
mysql_sha1_reset(&sha1_context);
mysql_sha1_input(&sha1_context, (const uint8 *) buf, len);
mysql_sha1_result(&sha1_context, digest);
#endif /* HAVE_YASSL */
}
/**
Wrapper function to compute SHA1 message digest for
two messages in order to emulate sha1(msg1, msg2).
@param digest [out] Computed SHA1 digest
@param buf1 [in] First message
@param len1 [in] Length of first message
@param buf2 [in] Second message
@param len2 [in] Length of second message
@return void
*/
void my_sha1_multi(uint8 *digest, ...)
{
va_list args;
va_start(args, digest);
#if defined(HAVE_YASSL)
mysql_sha1_multi_yassl(digest, args);
#elif defined(HAVE_OPENSSL)
SHA_CTX sha1_context;
const char *str;
mysql_sha1_reset(&sha1_context);
for (str= va_arg(args, const char*); str; str= va_arg(args, const char*))
{
mysql_sha1_input(&sha1_context, (const uint8 *) str, va_arg(args, size_t));
}
mysql_sha1_result(&sha1_context, digest);
#endif /* HAVE_YASSL */
va_end(args);
}
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