1 | /* |
2 | * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved. |
3 | * |
4 | * Licensed under the Apache License 2.0 (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 |
8 | */ |
9 | |
10 | #include <stdio.h> |
11 | #include "internal/cryptlib.h" |
12 | #include <openssl/evp.h> |
13 | #include <openssl/objects.h> |
14 | #include <openssl/x509.h> |
15 | #include <openssl/pem.h> |
16 | |
17 | int PEM_SignInit(EVP_MD_CTX *ctx, EVP_MD *type) |
18 | { |
19 | return EVP_DigestInit_ex(ctx, type, NULL); |
20 | } |
21 | |
22 | int PEM_SignUpdate(EVP_MD_CTX *ctx, |
23 | const unsigned char *data, unsigned int count) |
24 | { |
25 | return EVP_DigestUpdate(ctx, data, count); |
26 | } |
27 | |
28 | int PEM_SignFinal(EVP_MD_CTX *ctx, unsigned char *sigret, |
29 | unsigned int *siglen, EVP_PKEY *pkey) |
30 | { |
31 | unsigned char *m; |
32 | int i, ret = 0; |
33 | unsigned int m_len; |
34 | |
35 | m = OPENSSL_malloc(EVP_PKEY_size(pkey)); |
36 | if (m == NULL) { |
37 | PEMerr(PEM_F_PEM_SIGNFINAL, ERR_R_MALLOC_FAILURE); |
38 | goto err; |
39 | } |
40 | |
41 | if (EVP_SignFinal(ctx, m, &m_len, pkey) <= 0) |
42 | goto err; |
43 | |
44 | i = EVP_EncodeBlock(sigret, m, m_len); |
45 | *siglen = i; |
46 | ret = 1; |
47 | err: |
48 | /* ctx has been zeroed by EVP_SignFinal() */ |
49 | OPENSSL_free(m); |
50 | return ret; |
51 | } |
52 | |