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Commit | Line | Data |
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62867571 RS |
1 | /* |
2 | * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved. | |
d02b48c6 | 3 | * |
62867571 RS |
4 | * Licensed under the OpenSSL license (the "License"). You may not use |
5 | * this file except in compliance with the License. You can obtain a copy | |
6 | * in the file LICENSE in the source distribution or at | |
7 | * https://www.openssl.org/source/license.html | |
d02b48c6 RE |
8 | */ |
9 | ||
10 | #include <stdio.h> | |
b39fc560 | 11 | #include "internal/cryptlib.h" |
ec577822 BM |
12 | #include <openssl/evp.h> |
13 | #include <openssl/objects.h> | |
14 | #include <openssl/x509.h> | |
ab0a14bb | 15 | #include "internal/evp_int.h" |
d02b48c6 | 16 | |
6343829a | 17 | int EVP_VerifyFinal(EVP_MD_CTX *ctx, const unsigned char *sigbuf, |
0f113f3e MC |
18 | unsigned int siglen, EVP_PKEY *pkey) |
19 | { | |
20 | unsigned char m[EVP_MAX_MD_SIZE]; | |
4c9b0a03 | 21 | unsigned int m_len = 0; |
7f572e95 | 22 | int i = 0; |
0f113f3e | 23 | EVP_PKEY_CTX *pkctx = NULL; |
ee1d9ec0 | 24 | |
77a01145 | 25 | if (EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_FINALISE)) { |
0f113f3e MC |
26 | if (!EVP_DigestFinal_ex(ctx, m, &m_len)) |
27 | goto err; | |
28 | } else { | |
4c9b0a03 | 29 | int rv = 0; |
bfb0641f | 30 | EVP_MD_CTX *tmp_ctx = EVP_MD_CTX_new(); |
77a01145 RL |
31 | if (tmp_ctx == NULL) { |
32 | EVPerr(EVP_F_EVP_VERIFYFINAL, ERR_R_MALLOC_FAILURE); | |
33 | return 0; | |
34 | } | |
35 | rv = EVP_MD_CTX_copy_ex(tmp_ctx, ctx); | |
0f113f3e | 36 | if (rv) |
77a01145 | 37 | rv = EVP_DigestFinal_ex(tmp_ctx, m, &m_len); |
bfb0641f | 38 | EVP_MD_CTX_free(tmp_ctx); |
0f113f3e MC |
39 | if (!rv) |
40 | return 0; | |
41 | } | |
ee1d9ec0 | 42 | |
7f572e95 DSH |
43 | i = -1; |
44 | pkctx = EVP_PKEY_CTX_new(pkey, NULL); | |
45 | if (pkctx == NULL) | |
46 | goto err; | |
47 | if (EVP_PKEY_verify_init(pkctx) <= 0) | |
48 | goto err; | |
ab0a14bb | 49 | if (EVP_PKEY_CTX_set_signature_md(pkctx, EVP_MD_CTX_md(ctx)) <= 0) |
7f572e95 DSH |
50 | goto err; |
51 | i = EVP_PKEY_verify(pkctx, sigbuf, siglen, m, m_len); | |
0f113f3e | 52 | err: |
7f572e95 DSH |
53 | EVP_PKEY_CTX_free(pkctx); |
54 | return i; | |
0f113f3e | 55 | } |