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58964a49 | 1 | /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) |
d02b48c6 RE |
2 | * All rights reserved. |
3 | * | |
4 | * This package is an SSL implementation written | |
5 | * by Eric Young (eay@cryptsoft.com). | |
6 | * The implementation was written so as to conform with Netscapes SSL. | |
0f113f3e | 7 | * |
d02b48c6 RE |
8 | * This library is free for commercial and non-commercial use as long as |
9 | * the following conditions are aheared to. The following conditions | |
10 | * apply to all code found in this distribution, be it the RC4, RSA, | |
11 | * lhash, DES, etc., code; not just the SSL code. The SSL documentation | |
12 | * included with this distribution is covered by the same copyright terms | |
13 | * except that the holder is Tim Hudson (tjh@cryptsoft.com). | |
0f113f3e | 14 | * |
d02b48c6 RE |
15 | * Copyright remains Eric Young's, and as such any Copyright notices in |
16 | * the code are not to be removed. | |
17 | * If this package is used in a product, Eric Young should be given attribution | |
18 | * as the author of the parts of the library used. | |
19 | * This can be in the form of a textual message at program startup or | |
20 | * in documentation (online or textual) provided with the package. | |
0f113f3e | 21 | * |
d02b48c6 RE |
22 | * Redistribution and use in source and binary forms, with or without |
23 | * modification, are permitted provided that the following conditions | |
24 | * are met: | |
25 | * 1. Redistributions of source code must retain the copyright | |
26 | * notice, this list of conditions and the following disclaimer. | |
27 | * 2. Redistributions in binary form must reproduce the above copyright | |
28 | * notice, this list of conditions and the following disclaimer in the | |
29 | * documentation and/or other materials provided with the distribution. | |
30 | * 3. All advertising materials mentioning features or use of this software | |
31 | * must display the following acknowledgement: | |
32 | * "This product includes cryptographic software written by | |
33 | * Eric Young (eay@cryptsoft.com)" | |
34 | * The word 'cryptographic' can be left out if the rouines from the library | |
35 | * being used are not cryptographic related :-). | |
0f113f3e | 36 | * 4. If you include any Windows specific code (or a derivative thereof) from |
d02b48c6 RE |
37 | * the apps directory (application code) you must include an acknowledgement: |
38 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
0f113f3e | 39 | * |
d02b48c6 RE |
40 | * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND |
41 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
42 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
43 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
44 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
45 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
46 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
47 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
48 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
49 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
50 | * SUCH DAMAGE. | |
0f113f3e | 51 | * |
d02b48c6 RE |
52 | * The licence and distribution terms for any publically available version or |
53 | * derivative of this code cannot be changed. i.e. this code cannot simply be | |
54 | * copied and put under another distribution licence | |
55 | * [including the GNU Public Licence.] | |
56 | */ | |
57 | ||
58 | #include <stdio.h> | |
b39fc560 | 59 | #include "internal/cryptlib.h" |
ec577822 BM |
60 | #include <openssl/evp.h> |
61 | #include <openssl/objects.h> | |
62 | #include <openssl/x509.h> | |
ab0a14bb | 63 | #include "internal/evp_int.h" |
d02b48c6 | 64 | |
6343829a | 65 | int EVP_VerifyFinal(EVP_MD_CTX *ctx, const unsigned char *sigbuf, |
0f113f3e MC |
66 | unsigned int siglen, EVP_PKEY *pkey) |
67 | { | |
68 | unsigned char m[EVP_MAX_MD_SIZE]; | |
4c9b0a03 | 69 | unsigned int m_len = 0; |
7f572e95 | 70 | int i = 0; |
0f113f3e | 71 | EVP_PKEY_CTX *pkctx = NULL; |
ee1d9ec0 | 72 | |
77a01145 | 73 | if (EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_FINALISE)) { |
0f113f3e MC |
74 | if (!EVP_DigestFinal_ex(ctx, m, &m_len)) |
75 | goto err; | |
76 | } else { | |
4c9b0a03 | 77 | int rv = 0; |
bfb0641f | 78 | EVP_MD_CTX *tmp_ctx = EVP_MD_CTX_new(); |
77a01145 RL |
79 | if (tmp_ctx == NULL) { |
80 | EVPerr(EVP_F_EVP_VERIFYFINAL, ERR_R_MALLOC_FAILURE); | |
81 | return 0; | |
82 | } | |
83 | rv = EVP_MD_CTX_copy_ex(tmp_ctx, ctx); | |
0f113f3e | 84 | if (rv) |
77a01145 | 85 | rv = EVP_DigestFinal_ex(tmp_ctx, m, &m_len); |
bfb0641f | 86 | EVP_MD_CTX_free(tmp_ctx); |
0f113f3e MC |
87 | if (!rv) |
88 | return 0; | |
89 | } | |
ee1d9ec0 | 90 | |
7f572e95 DSH |
91 | i = -1; |
92 | pkctx = EVP_PKEY_CTX_new(pkey, NULL); | |
93 | if (pkctx == NULL) | |
94 | goto err; | |
95 | if (EVP_PKEY_verify_init(pkctx) <= 0) | |
96 | goto err; | |
ab0a14bb | 97 | if (EVP_PKEY_CTX_set_signature_md(pkctx, EVP_MD_CTX_md(ctx)) <= 0) |
7f572e95 DSH |
98 | goto err; |
99 | i = EVP_PKEY_verify(pkctx, sigbuf, siglen, m, m_len); | |
0f113f3e | 100 | err: |
7f572e95 DSH |
101 | EVP_PKEY_CTX_free(pkctx); |
102 | return i; | |
0f113f3e | 103 | } |