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aa6bb135 RS |
1 | /* |
2 | * Copyright 1995-2016 The OpenSSL Project Authors. All Rights Reserved. | |
d02b48c6 | 3 | * |
aa6bb135 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 | ||
b39fc560 | 10 | #include "internal/cryptlib.h" |
effaf4de RS |
11 | #ifdef OPENSSL_NO_RSA |
12 | NON_EMPTY_TRANSLATION_UNIT | |
13 | #else | |
be9bec9b | 14 | |
effaf4de | 15 | # include <stdio.h> |
0f113f3e MC |
16 | # include <openssl/evp.h> |
17 | # include <openssl/objects.h> | |
18 | # include <openssl/x509.h> | |
19 | # include <openssl/rsa.h> | |
d02b48c6 | 20 | |
875a644a | 21 | int EVP_OpenInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *type, |
0f113f3e MC |
22 | const unsigned char *ek, int ekl, const unsigned char *iv, |
23 | EVP_PKEY *priv) | |
24 | { | |
25 | unsigned char *key = NULL; | |
26 | int i, size = 0, ret = 0; | |
a91dedca | 27 | |
0f113f3e | 28 | if (type) { |
846ec07d | 29 | EVP_CIPHER_CTX_reset(ctx); |
0f113f3e MC |
30 | if (!EVP_DecryptInit_ex(ctx, type, NULL, NULL, NULL)) |
31 | return 0; | |
32 | } | |
a91dedca | 33 | |
0f113f3e MC |
34 | if (!priv) |
35 | return 1; | |
a91dedca | 36 | |
3aeb9348 | 37 | if (EVP_PKEY_id(priv) != EVP_PKEY_RSA) { |
0f113f3e MC |
38 | EVPerr(EVP_F_EVP_OPENINIT, EVP_R_PUBLIC_KEY_NOT_RSA); |
39 | goto err; | |
40 | } | |
d02b48c6 | 41 | |
3aeb9348 | 42 | size = EVP_PKEY_size(priv); |
b196e7d9 | 43 | key = OPENSSL_malloc(size + 2); |
0f113f3e MC |
44 | if (key == NULL) { |
45 | /* ERROR */ | |
46 | EVPerr(EVP_F_EVP_OPENINIT, ERR_R_MALLOC_FAILURE); | |
47 | goto err; | |
48 | } | |
d02b48c6 | 49 | |
0f113f3e MC |
50 | i = EVP_PKEY_decrypt_old(key, ek, ekl, priv); |
51 | if ((i <= 0) || !EVP_CIPHER_CTX_set_key_length(ctx, i)) { | |
52 | /* ERROR */ | |
53 | goto err; | |
54 | } | |
55 | if (!EVP_DecryptInit_ex(ctx, NULL, NULL, key, iv)) | |
56 | goto err; | |
d02b48c6 | 57 | |
0f113f3e MC |
58 | ret = 1; |
59 | err: | |
4b45c6e5 | 60 | OPENSSL_clear_free(key, size); |
0f113f3e MC |
61 | return (ret); |
62 | } | |
d02b48c6 | 63 | |
6b691a5c | 64 | int EVP_OpenFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl) |
0f113f3e MC |
65 | { |
66 | int i; | |
d02b48c6 | 67 | |
0f113f3e MC |
68 | i = EVP_DecryptFinal_ex(ctx, out, outl); |
69 | if (i) | |
70 | i = EVP_DecryptInit_ex(ctx, NULL, NULL, NULL, NULL); | |
71 | return (i); | |
72 | } | |
f5d7a031 | 73 | #endif |