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/* Copyright (c) 2012, Oracle and/or its affiliates.
Copyright (c) 2014, SkySQL Ab.
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"
typedef TaoCrypt::SHA SHA_CTX;
static void sha1_init(SHA_CTX *context)
{
context->Init();
}
/*
this is a variant of sha1_init to be used in this file only.
does nothing for yassl, because the context's constructor was called automatically.
*/
static void sha1_init_fast(SHA_CTX *context)
{
}
static void sha1_input(SHA_CTX *context, const uchar *buf, unsigned len)
{
context->Update((const TaoCrypt::byte *) buf, len);
}
static void sha1_result(SHA_CTX *context, uchar digest[SHA1_HASH_SIZE])
{
context->Final((TaoCrypt::byte *) digest);
}
#elif defined(HAVE_OPENSSL)
#include <openssl/sha.h>
static void sha1_init(SHA_CTX *context)
{
SHA1_Init(context);
}
static void sha1_init_fast(SHA_CTX *context)
{
sha1_init(context);
}
static void sha1_input(SHA_CTX *context, const uchar *buf, unsigned len)
{
SHA1_Update(context, buf, len);
}
static void sha1_result(SHA_CTX *context, uchar digest[SHA1_HASH_SIZE])
{
SHA1_Final(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(uchar *digest, const char *buf, size_t len)
{
SHA_CTX sha1_context;
sha1_init_fast(&sha1_context);
sha1_input(&sha1_context, (const uchar *)buf, len);
sha1_result(&sha1_context, digest);
}
/**
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(uchar *digest, ...)
{
va_list args;
va_start(args, digest);
SHA_CTX sha1_context;
const uchar *str;
sha1_init_fast(&sha1_context);
for (str= va_arg(args, const uchar*); str; str= va_arg(args, const uchar*))
sha1_input(&sha1_context, str, va_arg(args, size_t));
sha1_result(&sha1_context, digest);
va_end(args);
}
size_t my_sha1_context_size()
{
return sizeof(SHA_CTX);
}
void my_sha1_init(void *context)
{
sha1_init((SHA_CTX *)context);
}
void my_sha1_input(void *context, const uchar *buf, size_t len)
{
sha1_input((SHA_CTX *)context, buf, len);
}
void my_sha1_result(void *context, uchar *digest)
{
sha1_result((SHA_CTX *)context, digest);
}
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