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627b73cc72
md5_sha1_init(), md5_sha1_update(), md5_sha1_final() and md5_sha1_ctrl(). Reviewed-by: Tim Hudson <tjh@openssl.org> (Merged from https://github.com/openssl/openssl/pull/13417)
109 lines
2.6 KiB
C
109 lines
2.6 KiB
C
/*
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* Copyright 2015-2020 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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/*
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* MD5 and SHA-1 low level APIs are deprecated for public use, but still ok for
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* internal use.
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*/
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#include "internal/deprecated.h"
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#include <string.h>
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#include "prov/md5_sha1.h"
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#include <openssl/evp.h>
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int ossl_md5_sha1_init(MD5_SHA1_CTX *mctx)
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{
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if (!MD5_Init(&mctx->md5))
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return 0;
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return SHA1_Init(&mctx->sha1);
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}
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int ossl_md5_sha1_update(MD5_SHA1_CTX *mctx, const void *data, size_t count)
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{
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if (!MD5_Update(&mctx->md5, data, count))
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return 0;
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return SHA1_Update(&mctx->sha1, data, count);
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}
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int ossl_md5_sha1_final(unsigned char *md, MD5_SHA1_CTX *mctx)
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{
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if (!MD5_Final(md, &mctx->md5))
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return 0;
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return SHA1_Final(md + MD5_DIGEST_LENGTH, &mctx->sha1);
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}
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int ossl_md5_sha1_ctrl(MD5_SHA1_CTX *mctx, int cmd, int mslen, void *ms)
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{
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unsigned char padtmp[48];
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unsigned char md5tmp[MD5_DIGEST_LENGTH];
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unsigned char sha1tmp[SHA_DIGEST_LENGTH];
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if (cmd != EVP_CTRL_SSL3_MASTER_SECRET)
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return -2;
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if (mctx == NULL)
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return 0;
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/* SSLv3 client auth handling: see RFC-6101 5.6.8 */
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if (mslen != 48)
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return 0;
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/* At this point hash contains all handshake messages, update
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* with master secret and pad_1.
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*/
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if (ossl_md5_sha1_update(mctx, ms, mslen) <= 0)
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return 0;
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/* Set padtmp to pad_1 value */
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memset(padtmp, 0x36, sizeof(padtmp));
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if (!MD5_Update(&mctx->md5, padtmp, sizeof(padtmp)))
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return 0;
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if (!MD5_Final(md5tmp, &mctx->md5))
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return 0;
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if (!SHA1_Update(&mctx->sha1, padtmp, 40))
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return 0;
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if (!SHA1_Final(sha1tmp, &mctx->sha1))
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return 0;
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/* Reinitialise context */
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if (!ossl_md5_sha1_init(mctx))
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return 0;
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if (ossl_md5_sha1_update(mctx, ms, mslen) <= 0)
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return 0;
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/* Set padtmp to pad_2 value */
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memset(padtmp, 0x5c, sizeof(padtmp));
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if (!MD5_Update(&mctx->md5, padtmp, sizeof(padtmp)))
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return 0;
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if (!MD5_Update(&mctx->md5, md5tmp, sizeof(md5tmp)))
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return 0;
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if (!SHA1_Update(&mctx->sha1, padtmp, 40))
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return 0;
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if (!SHA1_Update(&mctx->sha1, sha1tmp, sizeof(sha1tmp)))
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return 0;
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/* Now when ctx is finalised it will return the SSL v3 hash value */
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OPENSSL_cleanse(md5tmp, sizeof(md5tmp));
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OPENSSL_cleanse(sha1tmp, sizeof(sha1tmp));
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return 1;
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}
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