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/*
* Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the OpenSSL license (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include <stdio.h>
#include "internal/cryptlib.h"
#include <openssl/evp.h>
#include <openssl/objects.h>
#include <openssl/sha.h>
#include <openssl/rsa.h>
#include "internal/evp_int.h"
static int init(EVP_MD_CTX *ctx)
{
return SHA1_Init(EVP_MD_CTX_md_data(ctx));
}
static int update(EVP_MD_CTX *ctx, const void *data, size_t count)
{
return SHA1_Update(EVP_MD_CTX_md_data(ctx), data, count);
}
static int final(EVP_MD_CTX *ctx, unsigned char *md)
{
return SHA1_Final(md, EVP_MD_CTX_md_data(ctx));
}
static int ctrl(EVP_MD_CTX *ctx, int cmd, int mslen, void *ms)
{
unsigned char padtmp[40];
unsigned char sha1tmp[SHA_DIGEST_LENGTH];
SHA_CTX *sha1;
if (cmd != EVP_CTRL_SSL3_MASTER_SECRET)
return -2;
if (ctx == NULL)
return 0;
sha1 = EVP_MD_CTX_md_data(ctx);
/* 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 (SHA1_Update(sha1, ms, mslen) <= 0)
return 0;
/* Set padtmp to pad_1 value */
memset(padtmp, 0x36, sizeof(padtmp));
if (!SHA1_Update(sha1, padtmp, sizeof(padtmp)))
return 0;
if (!SHA1_Final(sha1tmp, sha1))
return 0;
/* Reinitialise context */
if (!SHA1_Init(sha1))
return 0;
if (SHA1_Update(sha1, ms, mslen) <= 0)
return 0;
/* Set padtmp to pad_2 value */
memset(padtmp, 0x5c, sizeof(padtmp));
if (!SHA1_Update(sha1, padtmp, sizeof(padtmp)))
return 0;
if (!SHA1_Update(sha1, sha1tmp, sizeof(sha1tmp)))
return 0;
/* Now when ctx is finalised it will return the SSL v3 hash value */
OPENSSL_cleanse(sha1tmp, sizeof(sha1tmp));
return 1;
}
static const EVP_MD sha1_md = {
NID_sha1,
NID_sha1WithRSAEncryption,
SHA_DIGEST_LENGTH,
EVP_MD_FLAG_DIGALGID_ABSENT,
init,
update,
final,
NULL,
NULL,
SHA_CBLOCK,
sizeof(EVP_MD *) + sizeof(SHA_CTX),
ctrl
};
const EVP_MD *EVP_sha1(void)
{
return (&sha1_md);
}
static int init224(EVP_MD_CTX *ctx)
{
return SHA224_Init(EVP_MD_CTX_md_data(ctx));
}
static int init256(EVP_MD_CTX *ctx)
{
return SHA256_Init(EVP_MD_CTX_md_data(ctx));
}
/*
* Even though there're separate SHA224_[Update|Final], we call
* SHA256 functions even in SHA224 context. This is what happens
* there anyway, so we can spare few CPU cycles:-)
*/
static int update256(EVP_MD_CTX *ctx, const void *data, size_t count)
{
return SHA256_Update(EVP_MD_CTX_md_data(ctx), data, count);
}
static int final256(EVP_MD_CTX *ctx, unsigned char *md)
{
return SHA256_Final(md, EVP_MD_CTX_md_data(ctx));
}
static const EVP_MD sha224_md = {
NID_sha224,
NID_sha224WithRSAEncryption,
SHA224_DIGEST_LENGTH,
EVP_MD_FLAG_DIGALGID_ABSENT,
init224,
update256,
final256,
NULL,
NULL,
SHA256_CBLOCK,
sizeof(EVP_MD *) + sizeof(SHA256_CTX),
};
const EVP_MD *EVP_sha224(void)
{
return (&sha224_md);
}
static const EVP_MD sha256_md = {
NID_sha256,
NID_sha256WithRSAEncryption,
SHA256_DIGEST_LENGTH,
EVP_MD_FLAG_DIGALGID_ABSENT,
init256,
update256,
final256,
NULL,
NULL,
SHA256_CBLOCK,
sizeof(EVP_MD *) + sizeof(SHA256_CTX),
};
const EVP_MD *EVP_sha256(void)
{
return (&sha256_md);
}
static int init384(EVP_MD_CTX *ctx)
{
return SHA384_Init(EVP_MD_CTX_md_data(ctx));
}
static int init512(EVP_MD_CTX *ctx)
{
return SHA512_Init(EVP_MD_CTX_md_data(ctx));
}
/* See comment in SHA224/256 section */
static int update512(EVP_MD_CTX *ctx, const void *data, size_t count)
{
return SHA512_Update(EVP_MD_CTX_md_data(ctx), data, count);
}
static int final512(EVP_MD_CTX *ctx, unsigned char *md)
{
return SHA512_Final(md, EVP_MD_CTX_md_data(ctx));
}
static const EVP_MD sha384_md = {
NID_sha384,
NID_sha384WithRSAEncryption,
SHA384_DIGEST_LENGTH,
EVP_MD_FLAG_DIGALGID_ABSENT,
init384,
update512,
final512,
NULL,
NULL,
SHA512_CBLOCK,
sizeof(EVP_MD *) + sizeof(SHA512_CTX),
};
const EVP_MD *EVP_sha384(void)
{
return (&sha384_md);
}
static const EVP_MD sha512_md = {
NID_sha512,
NID_sha512WithRSAEncryption,
SHA512_DIGEST_LENGTH,
EVP_MD_FLAG_DIGALGID_ABSENT,
init512,
update512,
final512,
NULL,
NULL,
SHA512_CBLOCK,
sizeof(EVP_MD *) + sizeof(SHA512_CTX),
};
const EVP_MD *EVP_sha512(void)
{
return (&sha512_md);
}
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