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diff --git a/src/lib/libcrypto/evp/evp_lib.c b/src/lib/libcrypto/evp/evp_lib.c
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1/* $OpenBSD: evp_lib.c,v 1.14 2015/02/10 09:52:35 miod 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#include <string.h>
61
62#include <openssl/err.h>
63#include <openssl/evp.h>
64#include <openssl/objects.h>
65
66int
67EVP_CIPHER_param_to_asn1(EVP_CIPHER_CTX *c, ASN1_TYPE *type)
68{
69 int ret;
70
71 if (c->cipher->set_asn1_parameters != NULL)
72 ret = c->cipher->set_asn1_parameters(c, type);
73 else if (c->cipher->flags & EVP_CIPH_FLAG_DEFAULT_ASN1)
74 ret = EVP_CIPHER_set_asn1_iv(c, type);
75 else
76 ret = -1;
77 return (ret);
78}
79
80int
81EVP_CIPHER_asn1_to_param(EVP_CIPHER_CTX *c, ASN1_TYPE *type)
82{
83 int ret;
84
85 if (c->cipher->get_asn1_parameters != NULL)
86 ret = c->cipher->get_asn1_parameters(c, type);
87 else if (c->cipher->flags & EVP_CIPH_FLAG_DEFAULT_ASN1)
88 ret = EVP_CIPHER_get_asn1_iv(c, type);
89 else
90 ret = -1;
91 return (ret);
92}
93
94int
95EVP_CIPHER_get_asn1_iv(EVP_CIPHER_CTX *c, ASN1_TYPE *type)
96{
97 int i = 0;
98 unsigned int l;
99
100 if (type != NULL) {
101 l = EVP_CIPHER_CTX_iv_length(c);
102 if (l > sizeof(c->iv)) {
103 EVPerr(EVP_F_EVP_CIPHER_GET_ASN1_IV,
104 EVP_R_IV_TOO_LARGE);
105 return 0;
106 }
107 i = ASN1_TYPE_get_octetstring(type, c->oiv, l);
108 if (i != (int)l)
109 return (-1);
110 else if (i > 0)
111 memcpy(c->iv, c->oiv, l);
112 }
113 return (i);
114}
115
116int
117EVP_CIPHER_set_asn1_iv(EVP_CIPHER_CTX *c, ASN1_TYPE *type)
118{
119 int i = 0;
120 unsigned int j;
121
122 if (type != NULL) {
123 j = EVP_CIPHER_CTX_iv_length(c);
124 if (j > sizeof(c->iv)) {
125 EVPerr(EVP_F_EVP_CIPHER_SET_ASN1_IV,
126 EVP_R_IV_TOO_LARGE);
127 return 0;
128 }
129 i = ASN1_TYPE_set_octetstring(type, c->oiv, j);
130 }
131 return (i);
132}
133
134/* Convert the various cipher NIDs and dummies to a proper OID NID */
135int
136EVP_CIPHER_type(const EVP_CIPHER *ctx)
137{
138 int nid;
139 ASN1_OBJECT *otmp;
140 nid = EVP_CIPHER_nid(ctx);
141
142 switch (nid) {
143 case NID_rc2_cbc:
144 case NID_rc2_64_cbc:
145 case NID_rc2_40_cbc:
146 return NID_rc2_cbc;
147
148 case NID_rc4:
149 case NID_rc4_40:
150 return NID_rc4;
151
152 case NID_aes_128_cfb128:
153 case NID_aes_128_cfb8:
154 case NID_aes_128_cfb1:
155 return NID_aes_128_cfb128;
156
157 case NID_aes_192_cfb128:
158 case NID_aes_192_cfb8:
159 case NID_aes_192_cfb1:
160 return NID_aes_192_cfb128;
161
162 case NID_aes_256_cfb128:
163 case NID_aes_256_cfb8:
164 case NID_aes_256_cfb1:
165 return NID_aes_256_cfb128;
166
167 case NID_des_cfb64:
168 case NID_des_cfb8:
169 case NID_des_cfb1:
170 return NID_des_cfb64;
171
172 case NID_des_ede3_cfb64:
173 case NID_des_ede3_cfb8:
174 case NID_des_ede3_cfb1:
175 return NID_des_cfb64;
176
177 default:
178 /* Check it has an OID and it is valid */
179 otmp = OBJ_nid2obj(nid);
180 if (!otmp || !otmp->data)
181 nid = NID_undef;
182 ASN1_OBJECT_free(otmp);
183 return nid;
184 }
185}
186
187int
188EVP_CIPHER_block_size(const EVP_CIPHER *e)
189{
190 return e->block_size;
191}
192
193int
194EVP_CIPHER_CTX_block_size(const EVP_CIPHER_CTX *ctx)
195{
196 return ctx->cipher->block_size;
197}
198
199int
200EVP_Cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, const unsigned char *in,
201 unsigned int inl)
202{
203 return ctx->cipher->do_cipher(ctx, out, in, inl);
204}
205
206const EVP_CIPHER *
207EVP_CIPHER_CTX_cipher(const EVP_CIPHER_CTX *ctx)
208{
209 return ctx->cipher;
210}
211
212unsigned long
213EVP_CIPHER_flags(const EVP_CIPHER *cipher)
214{
215 return cipher->flags;
216}
217
218unsigned long
219EVP_CIPHER_CTX_flags(const EVP_CIPHER_CTX *ctx)
220{
221 return ctx->cipher->flags;
222}
223
224void *
225EVP_CIPHER_CTX_get_app_data(const EVP_CIPHER_CTX *ctx)
226{
227 return ctx->app_data;
228}
229
230void
231EVP_CIPHER_CTX_set_app_data(EVP_CIPHER_CTX *ctx, void *data)
232{
233 ctx->app_data = data;
234}
235
236int
237EVP_CIPHER_iv_length(const EVP_CIPHER *cipher)
238{
239 return cipher->iv_len;
240}
241
242int
243EVP_CIPHER_CTX_iv_length(const EVP_CIPHER_CTX *ctx)
244{
245 return ctx->cipher->iv_len;
246}
247
248int
249EVP_CIPHER_key_length(const EVP_CIPHER *cipher)
250{
251 return cipher->key_len;
252}
253
254int
255EVP_CIPHER_CTX_key_length(const EVP_CIPHER_CTX *ctx)
256{
257 return ctx->key_len;
258}
259
260int
261EVP_CIPHER_nid(const EVP_CIPHER *cipher)
262{
263 return cipher->nid;
264}
265
266int
267EVP_CIPHER_CTX_nid(const EVP_CIPHER_CTX *ctx)
268{
269 return ctx->cipher->nid;
270}
271
272int
273EVP_MD_block_size(const EVP_MD *md)
274{
275 return md->block_size;
276}
277
278int
279EVP_MD_type(const EVP_MD *md)
280{
281 return md->type;
282}
283
284int
285EVP_MD_pkey_type(const EVP_MD *md)
286{
287 return md->pkey_type;
288}
289
290int
291EVP_MD_size(const EVP_MD *md)
292{
293 if (!md) {
294 EVPerr(EVP_F_EVP_MD_SIZE, EVP_R_MESSAGE_DIGEST_IS_NULL);
295 return -1;
296 }
297 return md->md_size;
298}
299
300unsigned long
301EVP_MD_flags(const EVP_MD *md)
302{
303 return md->flags;
304}
305
306const EVP_MD *
307EVP_MD_CTX_md(const EVP_MD_CTX *ctx)
308{
309 if (!ctx)
310 return NULL;
311 return ctx->digest;
312}
313
314void
315EVP_MD_CTX_set_flags(EVP_MD_CTX *ctx, int flags)
316{
317 ctx->flags |= flags;
318}
319
320void
321EVP_MD_CTX_clear_flags(EVP_MD_CTX *ctx, int flags)
322{
323 ctx->flags &= ~flags;
324}
325
326int
327EVP_MD_CTX_test_flags(const EVP_MD_CTX *ctx, int flags)
328{
329 return (ctx->flags & flags);
330}
331
332void
333EVP_CIPHER_CTX_set_flags(EVP_CIPHER_CTX *ctx, int flags)
334{
335 ctx->flags |= flags;
336}
337
338void
339EVP_CIPHER_CTX_clear_flags(EVP_CIPHER_CTX *ctx, int flags)
340{
341 ctx->flags &= ~flags;
342}
343
344int
345EVP_CIPHER_CTX_test_flags(const EVP_CIPHER_CTX *ctx, int flags)
346{
347 return (ctx->flags & flags);
348}
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