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/* crypto/evp/m_md5_sha1.c */
/*
* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
* project.
*/
/* ====================================================================
* Copyright (c) 2015 The OpenSSL Project. 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.
*
* 3. All advertising materials mentioning features or use of this
* software must display the following acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
*
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please contact
* licensing@OpenSSL.org.
*
* 5. Products derived from this software may not be called "OpenSSL"
* nor may "OpenSSL" appear in their names without prior written
* permission of the OpenSSL Project.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
*
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
* EXPRESSED 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 OpenSSL PROJECT OR
* ITS 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.
* ====================================================================
*/
#if !defined(OPENSSL_NO_MD5) && !defined(OPENSSL_NO_SHA1)
# include <openssl/evp.h>
# include <openssl/objects.h>
# include <openssl/x509.h>
# include <openssl/md5.h>
# include <openssl/sha.h>
# include "internal/cryptlib.h"
# ifndef OPENSSL_NO_RSA
# include <openssl/rsa.h>
# endif
struct md5_sha1_ctx {
MD5_CTX md5;
SHA_CTX sha1;
};
static int init(EVP_MD_CTX *ctx)
{
struct md5_sha1_ctx *mctx = ctx->md_data;
if (!MD5_Init(&mctx->md5))
return 0;
return SHA1_Init(&mctx->sha1);
}
static int update(EVP_MD_CTX *ctx, const void *data, size_t count)
{
struct md5_sha1_ctx *mctx = ctx->md_data;
if (!MD5_Update(&mctx->md5, data, count))
return 0;
return SHA1_Update(&mctx->sha1, data, count);
}
static int final(EVP_MD_CTX *ctx, unsigned char *md)
{
struct md5_sha1_ctx *mctx = ctx->md_data;
if (!MD5_Final(md, &mctx->md5))
return 0;
return SHA1_Final(md + MD5_DIGEST_LENGTH, &mctx->sha1);
}
static int ctrl(EVP_MD_CTX *ctx, int cmd, int mslen, void *ms)
{
unsigned char padtmp[48];
unsigned char md5tmp[MD5_DIGEST_LENGTH];
unsigned char sha1tmp[SHA_DIGEST_LENGTH];
struct md5_sha1_ctx *mctx = ctx->md_data;
if (cmd != EVP_CTRL_SSL3_MASTER_SECRET)
return 0;
/* SSLv3 client auth handling: see RFC-6101 5.6.8 */
if (mslen != 48)
return 0;
/* At this point hash contains all handshake messages, update
* with master secret and pad_1.
*/
if (update(ctx, ms, mslen) <= 0)
return 0;
/* Set padtmp to pad_1 value */
memset(padtmp, 0x36, sizeof(padtmp));
if (!MD5_Update(&mctx->md5, padtmp, sizeof(padtmp)))
return 0;
if (!MD5_Final(md5tmp, &mctx->md5))
return 0;
if (!SHA1_Update(&mctx->sha1, padtmp, 40))
return 0;
if (!SHA1_Final(sha1tmp, &mctx->sha1))
return 0;
/* Reinitialise context */
if (!init(ctx))
return 0;
if (update(ctx, ms, mslen) <= 0)
return 0;
/* Set padtmp to pad_2 value */
memset(padtmp, 0x5c, sizeof(padtmp));
if (!MD5_Update(&mctx->md5, padtmp, sizeof(padtmp)))
return 0;
if (!MD5_Update(&mctx->md5, md5tmp, sizeof(md5tmp)))
return 0;
if (!SHA1_Update(&mctx->sha1, padtmp, 40))
return 0;
if (!SHA1_Update(&mctx->sha1, sha1tmp, sizeof(sha1tmp)))
return 0;
/* Now when ctx is finalised it will return the SSL v3 hash value */
OPENSSL_cleanse(md5tmp, sizeof(md5tmp));
OPENSSL_cleanse(sha1tmp, sizeof(sha1tmp));
return 1;
}
static const EVP_MD md5_sha1_md = {
NID_md5_sha1,
NID_md5_sha1,
MD5_DIGEST_LENGTH + SHA_DIGEST_LENGTH,
0,
init,
update,
final,
NULL,
NULL,
MD5_CBLOCK,
sizeof(EVP_MD *) + sizeof(struct md5_sha1_ctx),
ctrl
};
const EVP_MD *EVP_md5_sha1(void)
{
return &md5_sha1_md;
}
#endif
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