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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 | ||
b39fc560 | 58 | #include "internal/cryptlib.h" |
effaf4de RS |
59 | #ifdef OPENSSL_NO_RSA |
60 | NON_EMPTY_TRANSLATION_UNIT | |
61 | #else | |
be9bec9b | 62 | |
effaf4de | 63 | # include <stdio.h> |
0f113f3e MC |
64 | # include <openssl/evp.h> |
65 | # include <openssl/objects.h> | |
66 | # include <openssl/x509.h> | |
67 | # include <openssl/rsa.h> | |
d02b48c6 | 68 | |
875a644a | 69 | int EVP_OpenInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *type, |
0f113f3e MC |
70 | const unsigned char *ek, int ekl, const unsigned char *iv, |
71 | EVP_PKEY *priv) | |
72 | { | |
73 | unsigned char *key = NULL; | |
74 | int i, size = 0, ret = 0; | |
a91dedca | 75 | |
0f113f3e | 76 | if (type) { |
846ec07d | 77 | EVP_CIPHER_CTX_reset(ctx); |
0f113f3e MC |
78 | if (!EVP_DecryptInit_ex(ctx, type, NULL, NULL, NULL)) |
79 | return 0; | |
80 | } | |
a91dedca | 81 | |
0f113f3e MC |
82 | if (!priv) |
83 | return 1; | |
a91dedca | 84 | |
3aeb9348 | 85 | if (EVP_PKEY_id(priv) != EVP_PKEY_RSA) { |
0f113f3e MC |
86 | EVPerr(EVP_F_EVP_OPENINIT, EVP_R_PUBLIC_KEY_NOT_RSA); |
87 | goto err; | |
88 | } | |
d02b48c6 | 89 | |
3aeb9348 | 90 | size = EVP_PKEY_size(priv); |
b196e7d9 | 91 | key = OPENSSL_malloc(size + 2); |
0f113f3e MC |
92 | if (key == NULL) { |
93 | /* ERROR */ | |
94 | EVPerr(EVP_F_EVP_OPENINIT, ERR_R_MALLOC_FAILURE); | |
95 | goto err; | |
96 | } | |
d02b48c6 | 97 | |
0f113f3e MC |
98 | i = EVP_PKEY_decrypt_old(key, ek, ekl, priv); |
99 | if ((i <= 0) || !EVP_CIPHER_CTX_set_key_length(ctx, i)) { | |
100 | /* ERROR */ | |
101 | goto err; | |
102 | } | |
103 | if (!EVP_DecryptInit_ex(ctx, NULL, NULL, key, iv)) | |
104 | goto err; | |
d02b48c6 | 105 | |
0f113f3e MC |
106 | ret = 1; |
107 | err: | |
4b45c6e5 | 108 | OPENSSL_clear_free(key, size); |
0f113f3e MC |
109 | return (ret); |
110 | } | |
d02b48c6 | 111 | |
6b691a5c | 112 | int EVP_OpenFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl) |
0f113f3e MC |
113 | { |
114 | int i; | |
d02b48c6 | 115 | |
0f113f3e MC |
116 | i = EVP_DecryptFinal_ex(ctx, out, outl); |
117 | if (i) | |
118 | i = EVP_DecryptInit_ex(ctx, NULL, NULL, NULL, NULL); | |
119 | return (i); | |
120 | } | |
f5d7a031 | 121 | #endif |