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2f142ada DSH |
1 | /* |
2 | * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL | |
3 | * project. | |
4 | */ | |
5 | /* ==================================================================== | |
6 | * Copyright (c) 2015 The OpenSSL Project. All rights reserved. | |
7 | * | |
8 | * Redistribution and use in source and binary forms, with or without | |
9 | * modification, are permitted provided that the following conditions | |
10 | * are met: | |
11 | * | |
12 | * 1. Redistributions of source code must retain the above copyright | |
13 | * notice, this list of conditions and the following disclaimer. | |
14 | * | |
15 | * 2. Redistributions in binary form must reproduce the above copyright | |
16 | * notice, this list of conditions and the following disclaimer in | |
17 | * the documentation and/or other materials provided with the | |
18 | * distribution. | |
19 | * | |
20 | * 3. All advertising materials mentioning features or use of this | |
21 | * software must display the following acknowledgment: | |
22 | * "This product includes software developed by the OpenSSL Project | |
23 | * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" | |
24 | * | |
25 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | |
26 | * endorse or promote products derived from this software without | |
27 | * prior written permission. For written permission, please contact | |
28 | * licensing@OpenSSL.org. | |
29 | * | |
30 | * 5. Products derived from this software may not be called "OpenSSL" | |
31 | * nor may "OpenSSL" appear in their names without prior written | |
32 | * permission of the OpenSSL Project. | |
33 | * | |
34 | * 6. Redistributions of any form whatsoever must retain the following | |
35 | * acknowledgment: | |
36 | * "This product includes software developed by the OpenSSL Project | |
37 | * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" | |
38 | * | |
39 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | |
40 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
41 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
42 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | |
43 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
44 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
45 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
46 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
47 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
48 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
49 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
50 | * OF THE POSSIBILITY OF SUCH DAMAGE. | |
51 | * ==================================================================== | |
52 | */ | |
53 | ||
54 | #if !defined(OPENSSL_NO_MD5) && !defined(OPENSSL_NO_SHA1) | |
55 | ||
56 | # include <openssl/evp.h> | |
57 | # include <openssl/objects.h> | |
58 | # include <openssl/x509.h> | |
59 | # include <openssl/md5.h> | |
60 | # include <openssl/sha.h> | |
93972b8c | 61 | # include "internal/cryptlib.h" |
ab0a14bb | 62 | # include "internal/evp_int.h" |
3c27208f | 63 | # include <openssl/rsa.h> |
2f142ada DSH |
64 | |
65 | struct md5_sha1_ctx { | |
66 | MD5_CTX md5; | |
67 | SHA_CTX sha1; | |
68 | }; | |
69 | ||
70 | static int init(EVP_MD_CTX *ctx) | |
71 | { | |
6e59a892 | 72 | struct md5_sha1_ctx *mctx = EVP_MD_CTX_md_data(ctx); |
2f142ada DSH |
73 | if (!MD5_Init(&mctx->md5)) |
74 | return 0; | |
75 | return SHA1_Init(&mctx->sha1); | |
76 | } | |
77 | ||
78 | static int update(EVP_MD_CTX *ctx, const void *data, size_t count) | |
79 | { | |
6e59a892 | 80 | struct md5_sha1_ctx *mctx = EVP_MD_CTX_md_data(ctx); |
2f142ada DSH |
81 | if (!MD5_Update(&mctx->md5, data, count)) |
82 | return 0; | |
83 | return SHA1_Update(&mctx->sha1, data, count); | |
84 | } | |
85 | ||
86 | static int final(EVP_MD_CTX *ctx, unsigned char *md) | |
87 | { | |
6e59a892 | 88 | struct md5_sha1_ctx *mctx = EVP_MD_CTX_md_data(ctx); |
2f142ada DSH |
89 | if (!MD5_Final(md, &mctx->md5)) |
90 | return 0; | |
91 | return SHA1_Final(md + MD5_DIGEST_LENGTH, &mctx->sha1); | |
92 | } | |
93 | ||
93972b8c DSH |
94 | static int ctrl(EVP_MD_CTX *ctx, int cmd, int mslen, void *ms) |
95 | { | |
96 | unsigned char padtmp[48]; | |
97 | unsigned char md5tmp[MD5_DIGEST_LENGTH]; | |
98 | unsigned char sha1tmp[SHA_DIGEST_LENGTH]; | |
6e59a892 | 99 | struct md5_sha1_ctx *mctx = EVP_MD_CTX_md_data(ctx); |
93972b8c DSH |
100 | |
101 | if (cmd != EVP_CTRL_SSL3_MASTER_SECRET) | |
102 | return 0; | |
103 | ||
104 | /* SSLv3 client auth handling: see RFC-6101 5.6.8 */ | |
105 | if (mslen != 48) | |
106 | return 0; | |
107 | ||
108 | /* At this point hash contains all handshake messages, update | |
109 | * with master secret and pad_1. | |
110 | */ | |
111 | ||
112 | if (update(ctx, ms, mslen) <= 0) | |
113 | return 0; | |
114 | ||
115 | /* Set padtmp to pad_1 value */ | |
116 | memset(padtmp, 0x36, sizeof(padtmp)); | |
117 | ||
118 | if (!MD5_Update(&mctx->md5, padtmp, sizeof(padtmp))) | |
119 | return 0; | |
120 | ||
121 | if (!MD5_Final(md5tmp, &mctx->md5)) | |
122 | return 0; | |
123 | ||
124 | if (!SHA1_Update(&mctx->sha1, padtmp, 40)) | |
125 | return 0; | |
126 | ||
127 | if (!SHA1_Final(sha1tmp, &mctx->sha1)) | |
128 | return 0; | |
129 | ||
130 | /* Reinitialise context */ | |
131 | ||
132 | if (!init(ctx)) | |
133 | return 0; | |
134 | ||
135 | if (update(ctx, ms, mslen) <= 0) | |
136 | return 0; | |
137 | ||
138 | /* Set padtmp to pad_2 value */ | |
139 | memset(padtmp, 0x5c, sizeof(padtmp)); | |
140 | ||
141 | if (!MD5_Update(&mctx->md5, padtmp, sizeof(padtmp))) | |
142 | return 0; | |
143 | ||
144 | if (!MD5_Update(&mctx->md5, md5tmp, sizeof(md5tmp))) | |
145 | return 0; | |
146 | ||
147 | if (!SHA1_Update(&mctx->sha1, padtmp, 40)) | |
148 | return 0; | |
149 | ||
150 | if (!SHA1_Update(&mctx->sha1, sha1tmp, sizeof(sha1tmp))) | |
151 | return 0; | |
152 | ||
153 | /* Now when ctx is finalised it will return the SSL v3 hash value */ | |
154 | ||
155 | OPENSSL_cleanse(md5tmp, sizeof(md5tmp)); | |
156 | OPENSSL_cleanse(sha1tmp, sizeof(sha1tmp)); | |
157 | ||
158 | return 1; | |
159 | ||
160 | } | |
161 | ||
2f142ada DSH |
162 | static const EVP_MD md5_sha1_md = { |
163 | NID_md5_sha1, | |
164 | NID_md5_sha1, | |
165 | MD5_DIGEST_LENGTH + SHA_DIGEST_LENGTH, | |
166 | 0, | |
167 | init, | |
168 | update, | |
169 | final, | |
170 | NULL, | |
171 | NULL, | |
2f142ada DSH |
172 | MD5_CBLOCK, |
173 | sizeof(EVP_MD *) + sizeof(struct md5_sha1_ctx), | |
93972b8c | 174 | ctrl |
2f142ada DSH |
175 | }; |
176 | ||
177 | const EVP_MD *EVP_md5_sha1(void) | |
178 | { | |
179 | return &md5_sha1_md; | |
180 | } | |
181 | #endif |