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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 | * |
4a8b0c55 | 4 | * Licensed under the Apache License 2.0 (the "License"). You may not use |
62867571 RS |
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> | |
25f2138b | 15 | #include "crypto/evp.h" |
d02b48c6 | 16 | |
d8652be0 | 17 | int EVP_VerifyFinal_ex(EVP_MD_CTX *ctx, const unsigned char *sigbuf, |
b4250010 | 18 | unsigned int siglen, EVP_PKEY *pkey, OSSL_LIB_CTX *libctx, |
d8652be0 | 19 | const char *propq) |
0f113f3e MC |
20 | { |
21 | unsigned char m[EVP_MAX_MD_SIZE]; | |
4c9b0a03 | 22 | unsigned int m_len = 0; |
7f572e95 | 23 | int i = 0; |
0f113f3e | 24 | EVP_PKEY_CTX *pkctx = NULL; |
ee1d9ec0 | 25 | |
77a01145 | 26 | if (EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_FINALISE)) { |
0f113f3e MC |
27 | if (!EVP_DigestFinal_ex(ctx, m, &m_len)) |
28 | goto err; | |
29 | } else { | |
4c9b0a03 | 30 | int rv = 0; |
bfb0641f | 31 | EVP_MD_CTX *tmp_ctx = EVP_MD_CTX_new(); |
0ab18e79 | 32 | |
77a01145 | 33 | if (tmp_ctx == NULL) { |
0ab18e79 | 34 | EVPerr(0, ERR_R_MALLOC_FAILURE); |
77a01145 RL |
35 | return 0; |
36 | } | |
37 | rv = EVP_MD_CTX_copy_ex(tmp_ctx, ctx); | |
0f113f3e | 38 | if (rv) |
77a01145 | 39 | rv = EVP_DigestFinal_ex(tmp_ctx, m, &m_len); |
bfb0641f | 40 | EVP_MD_CTX_free(tmp_ctx); |
0f113f3e MC |
41 | if (!rv) |
42 | return 0; | |
43 | } | |
ee1d9ec0 | 44 | |
7f572e95 | 45 | i = -1; |
0ab18e79 | 46 | pkctx = EVP_PKEY_CTX_new_from_pkey(libctx, pkey, propq); |
7f572e95 DSH |
47 | if (pkctx == NULL) |
48 | goto err; | |
49 | if (EVP_PKEY_verify_init(pkctx) <= 0) | |
50 | goto err; | |
ab0a14bb | 51 | if (EVP_PKEY_CTX_set_signature_md(pkctx, EVP_MD_CTX_md(ctx)) <= 0) |
7f572e95 DSH |
52 | goto err; |
53 | i = EVP_PKEY_verify(pkctx, sigbuf, siglen, m, m_len); | |
0f113f3e | 54 | err: |
7f572e95 DSH |
55 | EVP_PKEY_CTX_free(pkctx); |
56 | return i; | |
0f113f3e | 57 | } |
0ab18e79 SL |
58 | |
59 | int EVP_VerifyFinal(EVP_MD_CTX *ctx, const unsigned char *sigbuf, | |
60 | unsigned int siglen, EVP_PKEY *pkey) | |
61 | { | |
d8652be0 | 62 | return EVP_VerifyFinal_ex(ctx, sigbuf, siglen, pkey, NULL, NULL); |
0ab18e79 | 63 | } |