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diff --git a/src/lib/libcrypto/evp/p_open.c b/src/lib/libcrypto/evp/p_open.c
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1/* $OpenBSD: p_open.c,v 1.16 2014/07/11 08:44:48 jsing Exp $ */
2/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
3 * All rights reserved.
4 *
5 * This package is an SSL implementation written
6 * by Eric Young (eay@cryptsoft.com).
7 * The implementation was written so as to conform with Netscapes SSL.
8 *
9 * This library is free for commercial and non-commercial use as long as
10 * the following conditions are aheared to. The following conditions
11 * apply to all code found in this distribution, be it the RC4, RSA,
12 * lhash, DES, etc., code; not just the SSL code. The SSL documentation
13 * included with this distribution is covered by the same copyright terms
14 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
15 *
16 * Copyright remains Eric Young's, and as such any Copyright notices in
17 * the code are not to be removed.
18 * If this package is used in a product, Eric Young should be given attribution
19 * as the author of the parts of the library used.
20 * This can be in the form of a textual message at program startup or
21 * in documentation (online or textual) provided with the package.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * "This product includes cryptographic software written by
34 * Eric Young (eay@cryptsoft.com)"
35 * The word 'cryptographic' can be left out if the rouines from the library
36 * being used are not cryptographic related :-).
37 * 4. If you include any Windows specific code (or a derivative thereof) from
38 * the apps directory (application code) you must include an acknowledgement:
39 * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
40 *
41 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
42 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
43 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
44 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
45 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
47 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
48 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
49 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
50 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
51 * SUCH DAMAGE.
52 *
53 * The licence and distribution terms for any publically available version or
54 * derivative of this code cannot be changed. i.e. this code cannot simply be
55 * copied and put under another distribution licence
56 * [including the GNU Public Licence.]
57 */
58
59#include <stdio.h>
60
61#include <openssl/opensslconf.h>
62
63#ifndef OPENSSL_NO_RSA
64
65#include <openssl/err.h>
66#include <openssl/evp.h>
67#include <openssl/objects.h>
68#include <openssl/rsa.h>
69#include <openssl/x509.h>
70
71int
72EVP_OpenInit(EVP_CIPHER_CTX *ctx, const EVP_CIPHER *type,
73 const unsigned char *ek, int ekl, const unsigned char *iv, EVP_PKEY *priv)
74{
75 unsigned char *key = NULL;
76 int i, size = 0, ret = 0;
77
78 if (type) {
79 EVP_CIPHER_CTX_init(ctx);
80 if (!EVP_DecryptInit_ex(ctx, type, NULL, NULL, NULL))
81 return 0;
82 }
83
84 if (!priv)
85 return 1;
86
87 if (priv->type != EVP_PKEY_RSA) {
88 EVPerr(EVP_F_EVP_OPENINIT, EVP_R_PUBLIC_KEY_NOT_RSA);
89 goto err;
90 }
91
92 size = RSA_size(priv->pkey.rsa);
93 key = malloc(size + 2);
94 if (key == NULL) {
95 /* ERROR */
96 EVPerr(EVP_F_EVP_OPENINIT, ERR_R_MALLOC_FAILURE);
97 goto err;
98 }
99
100 i = EVP_PKEY_decrypt_old(key, ek, ekl, priv);
101 if ((i <= 0) || !EVP_CIPHER_CTX_set_key_length(ctx, i)) {
102 /* ERROR */
103 goto err;
104 }
105 if (!EVP_DecryptInit_ex(ctx, NULL, NULL, key, iv))
106 goto err;
107
108 ret = 1;
109
110err:
111 if (key != NULL)
112 OPENSSL_cleanse(key, size);
113 free(key);
114 return (ret);
115}
116
117int
118EVP_OpenFinal(EVP_CIPHER_CTX *ctx, unsigned char *out, int *outl)
119{
120 int i;
121
122 i = EVP_DecryptFinal_ex(ctx, out, outl);
123 if (i)
124 i = EVP_DecryptInit_ex(ctx, NULL, NULL, NULL, NULL);
125 return (i);
126}
127#endif