]>
Commit | Line | Data |
---|---|---|
58964a49 RE |
1 | /* crypto/evp/evp_lib.c */ |
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. | |
0f113f3e | 8 | * |
58964a49 RE |
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). | |
0f113f3e | 15 | * |
58964a49 RE |
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. | |
0f113f3e | 22 | * |
58964a49 RE |
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 :-). | |
0f113f3e | 37 | * 4. If you include any Windows specific code (or a derivative thereof) from |
58964a49 RE |
38 | * the apps directory (application code) you must include an acknowledgement: |
39 | * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" | |
0f113f3e | 40 | * |
58964a49 RE |
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. | |
0f113f3e | 52 | * |
58964a49 RE |
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> | |
b39fc560 | 60 | #include "internal/cryptlib.h" |
ec577822 BM |
61 | #include <openssl/evp.h> |
62 | #include <openssl/objects.h> | |
58964a49 | 63 | |
6b691a5c | 64 | int EVP_CIPHER_param_to_asn1(EVP_CIPHER_CTX *c, ASN1_TYPE *type) |
0f113f3e MC |
65 | { |
66 | int ret; | |
67 | ||
68 | if (c->cipher->set_asn1_parameters != NULL) | |
69 | ret = c->cipher->set_asn1_parameters(c, type); | |
70 | else if (c->cipher->flags & EVP_CIPH_FLAG_DEFAULT_ASN1) { | |
2acdef5e DSH |
71 | switch (EVP_CIPHER_CTX_mode(c)) { |
72 | case EVP_CIPH_WRAP_MODE: | |
0f113f3e MC |
73 | ASN1_TYPE_set(type, V_ASN1_NULL, NULL); |
74 | ret = 1; | |
2acdef5e DSH |
75 | break; |
76 | ||
77 | case EVP_CIPH_GCM_MODE: | |
78 | case EVP_CIPH_CCM_MODE: | |
79 | case EVP_CIPH_XTS_MODE: | |
80 | case EVP_CIPH_OCB_MODE: | |
81 | ret = -1; | |
82 | break; | |
83 | ||
84 | default: | |
0f113f3e | 85 | ret = EVP_CIPHER_set_asn1_iv(c, type); |
2acdef5e | 86 | } |
0f113f3e MC |
87 | } else |
88 | ret = -1; | |
89 | return (ret); | |
90 | } | |
58964a49 | 91 | |
6b691a5c | 92 | int EVP_CIPHER_asn1_to_param(EVP_CIPHER_CTX *c, ASN1_TYPE *type) |
0f113f3e MC |
93 | { |
94 | int ret; | |
95 | ||
96 | if (c->cipher->get_asn1_parameters != NULL) | |
97 | ret = c->cipher->get_asn1_parameters(c, type); | |
98 | else if (c->cipher->flags & EVP_CIPH_FLAG_DEFAULT_ASN1) { | |
2acdef5e DSH |
99 | switch (EVP_CIPHER_CTX_mode(c)) { |
100 | ||
101 | case EVP_CIPH_WRAP_MODE: | |
102 | ret = 1; | |
103 | break; | |
104 | ||
105 | case EVP_CIPH_GCM_MODE: | |
106 | case EVP_CIPH_CCM_MODE: | |
107 | case EVP_CIPH_XTS_MODE: | |
108 | case EVP_CIPH_OCB_MODE: | |
109 | ret = -1; | |
110 | break; | |
111 | ||
112 | default: | |
113 | ret = EVP_CIPHER_get_asn1_iv(c, type); | |
114 | break; | |
115 | } | |
0f113f3e MC |
116 | } else |
117 | ret = -1; | |
118 | return (ret); | |
119 | } | |
58964a49 | 120 | |
6b691a5c | 121 | int EVP_CIPHER_get_asn1_iv(EVP_CIPHER_CTX *c, ASN1_TYPE *type) |
0f113f3e MC |
122 | { |
123 | int i = 0; | |
124 | unsigned int l; | |
125 | ||
126 | if (type != NULL) { | |
127 | l = EVP_CIPHER_CTX_iv_length(c); | |
128 | OPENSSL_assert(l <= sizeof(c->iv)); | |
129 | i = ASN1_TYPE_get_octetstring(type, c->oiv, l); | |
130 | if (i != (int)l) | |
131 | return (-1); | |
132 | else if (i > 0) | |
133 | memcpy(c->iv, c->oiv, l); | |
134 | } | |
135 | return (i); | |
136 | } | |
58964a49 | 137 | |
6b691a5c | 138 | int EVP_CIPHER_set_asn1_iv(EVP_CIPHER_CTX *c, ASN1_TYPE *type) |
0f113f3e MC |
139 | { |
140 | int i = 0; | |
141 | unsigned int j; | |
142 | ||
143 | if (type != NULL) { | |
144 | j = EVP_CIPHER_CTX_iv_length(c); | |
145 | OPENSSL_assert(j <= sizeof(c->iv)); | |
146 | i = ASN1_TYPE_set_octetstring(type, c->oiv, j); | |
147 | } | |
148 | return (i); | |
149 | } | |
884e8ec6 DSH |
150 | |
151 | /* Convert the various cipher NIDs and dummies to a proper OID NID */ | |
84fa704c | 152 | int EVP_CIPHER_type(const EVP_CIPHER *ctx) |
884e8ec6 | 153 | { |
0f113f3e MC |
154 | int nid; |
155 | ASN1_OBJECT *otmp; | |
156 | nid = EVP_CIPHER_nid(ctx); | |
884e8ec6 | 157 | |
0f113f3e | 158 | switch (nid) { |
884e8ec6 | 159 | |
0f113f3e MC |
160 | case NID_rc2_cbc: |
161 | case NID_rc2_64_cbc: | |
162 | case NID_rc2_40_cbc: | |
884e8ec6 | 163 | |
0f113f3e | 164 | return NID_rc2_cbc; |
884e8ec6 | 165 | |
0f113f3e MC |
166 | case NID_rc4: |
167 | case NID_rc4_40: | |
884e8ec6 | 168 | |
0f113f3e | 169 | return NID_rc4; |
884e8ec6 | 170 | |
0f113f3e MC |
171 | case NID_aes_128_cfb128: |
172 | case NID_aes_128_cfb8: | |
173 | case NID_aes_128_cfb1: | |
8d1ebe0b | 174 | |
0f113f3e | 175 | return NID_aes_128_cfb128; |
8d1ebe0b | 176 | |
0f113f3e MC |
177 | case NID_aes_192_cfb128: |
178 | case NID_aes_192_cfb8: | |
179 | case NID_aes_192_cfb1: | |
8d1ebe0b | 180 | |
0f113f3e | 181 | return NID_aes_192_cfb128; |
8d1ebe0b | 182 | |
0f113f3e MC |
183 | case NID_aes_256_cfb128: |
184 | case NID_aes_256_cfb8: | |
185 | case NID_aes_256_cfb1: | |
8d1ebe0b | 186 | |
0f113f3e | 187 | return NID_aes_256_cfb128; |
8d1ebe0b | 188 | |
0f113f3e MC |
189 | case NID_des_cfb64: |
190 | case NID_des_cfb8: | |
191 | case NID_des_cfb1: | |
8d1ebe0b | 192 | |
0f113f3e | 193 | return NID_des_cfb64; |
8d1ebe0b | 194 | |
0f113f3e MC |
195 | case NID_des_ede3_cfb64: |
196 | case NID_des_ede3_cfb8: | |
197 | case NID_des_ede3_cfb1: | |
7e765bf2 | 198 | |
0f113f3e | 199 | return NID_des_cfb64; |
7e765bf2 | 200 | |
0f113f3e MC |
201 | default: |
202 | /* Check it has an OID and it is valid */ | |
203 | otmp = OBJ_nid2obj(nid); | |
2e430277 | 204 | if (OBJ_get0_data(otmp) == NULL) |
0f113f3e MC |
205 | nid = NID_undef; |
206 | ASN1_OBJECT_free(otmp); | |
207 | return nid; | |
208 | } | |
884e8ec6 DSH |
209 | } |
210 | ||
6343829a | 211 | int EVP_CIPHER_block_size(const EVP_CIPHER *e) |
0f113f3e MC |
212 | { |
213 | return e->block_size; | |
214 | } | |
7806f3dd | 215 | |
6343829a | 216 | int EVP_CIPHER_CTX_block_size(const EVP_CIPHER_CTX *ctx) |
0f113f3e MC |
217 | { |
218 | return ctx->cipher->block_size; | |
219 | } | |
7806f3dd | 220 | |
0f113f3e MC |
221 | int EVP_Cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
222 | const unsigned char *in, unsigned int inl) | |
223 | { | |
224 | return ctx->cipher->do_cipher(ctx, out, in, inl); | |
225 | } | |
7806f3dd NL |
226 | |
227 | const EVP_CIPHER *EVP_CIPHER_CTX_cipher(const EVP_CIPHER_CTX *ctx) | |
0f113f3e MC |
228 | { |
229 | return ctx->cipher; | |
230 | } | |
7806f3dd NL |
231 | |
232 | unsigned long EVP_CIPHER_flags(const EVP_CIPHER *cipher) | |
0f113f3e MC |
233 | { |
234 | return cipher->flags; | |
235 | } | |
7806f3dd NL |
236 | |
237 | unsigned long EVP_CIPHER_CTX_flags(const EVP_CIPHER_CTX *ctx) | |
0f113f3e MC |
238 | { |
239 | return ctx->cipher->flags; | |
240 | } | |
7806f3dd NL |
241 | |
242 | void *EVP_CIPHER_CTX_get_app_data(const EVP_CIPHER_CTX *ctx) | |
0f113f3e MC |
243 | { |
244 | return ctx->app_data; | |
245 | } | |
7806f3dd NL |
246 | |
247 | void EVP_CIPHER_CTX_set_app_data(EVP_CIPHER_CTX *ctx, void *data) | |
0f113f3e MC |
248 | { |
249 | ctx->app_data = data; | |
250 | } | |
7806f3dd | 251 | |
6343829a | 252 | int EVP_CIPHER_iv_length(const EVP_CIPHER *cipher) |
0f113f3e MC |
253 | { |
254 | return cipher->iv_len; | |
255 | } | |
7806f3dd | 256 | |
6343829a | 257 | int EVP_CIPHER_CTX_iv_length(const EVP_CIPHER_CTX *ctx) |
0f113f3e MC |
258 | { |
259 | return ctx->cipher->iv_len; | |
260 | } | |
7806f3dd | 261 | |
6343829a | 262 | int EVP_CIPHER_key_length(const EVP_CIPHER *cipher) |
0f113f3e MC |
263 | { |
264 | return cipher->key_len; | |
265 | } | |
7806f3dd | 266 | |
6343829a | 267 | int EVP_CIPHER_CTX_key_length(const EVP_CIPHER_CTX *ctx) |
0f113f3e MC |
268 | { |
269 | return ctx->key_len; | |
270 | } | |
7806f3dd NL |
271 | |
272 | int EVP_CIPHER_nid(const EVP_CIPHER *cipher) | |
0f113f3e MC |
273 | { |
274 | return cipher->nid; | |
275 | } | |
7806f3dd NL |
276 | |
277 | int EVP_CIPHER_CTX_nid(const EVP_CIPHER_CTX *ctx) | |
0f113f3e MC |
278 | { |
279 | return ctx->cipher->nid; | |
280 | } | |
7806f3dd | 281 | |
0f113f3e MC |
282 | int EVP_MD_block_size(const EVP_MD *md) |
283 | { | |
284 | return md->block_size; | |
285 | } | |
7806f3dd NL |
286 | |
287 | int EVP_MD_type(const EVP_MD *md) | |
0f113f3e MC |
288 | { |
289 | return md->type; | |
290 | } | |
7806f3dd NL |
291 | |
292 | int EVP_MD_pkey_type(const EVP_MD *md) | |
0f113f3e MC |
293 | { |
294 | return md->pkey_type; | |
295 | } | |
7806f3dd | 296 | |
6343829a | 297 | int EVP_MD_size(const EVP_MD *md) |
0f113f3e MC |
298 | { |
299 | if (!md) { | |
300 | EVPerr(EVP_F_EVP_MD_SIZE, EVP_R_MESSAGE_DIGEST_IS_NULL); | |
301 | return -1; | |
302 | } | |
303 | return md->md_size; | |
304 | } | |
7806f3dd | 305 | |
e5fa864f | 306 | unsigned long EVP_MD_flags(const EVP_MD *md) |
0f113f3e MC |
307 | { |
308 | return md->flags; | |
309 | } | |
e5fa864f | 310 | |
7806f3dd | 311 | const EVP_MD *EVP_MD_CTX_md(const EVP_MD_CTX *ctx) |
0f113f3e MC |
312 | { |
313 | if (!ctx) | |
314 | return NULL; | |
315 | return ctx->digest; | |
316 | } | |
7806f3dd NL |
317 | |
318 | void EVP_MD_CTX_set_flags(EVP_MD_CTX *ctx, int flags) | |
0f113f3e MC |
319 | { |
320 | ctx->flags |= flags; | |
321 | } | |
7806f3dd NL |
322 | |
323 | void EVP_MD_CTX_clear_flags(EVP_MD_CTX *ctx, int flags) | |
0f113f3e MC |
324 | { |
325 | ctx->flags &= ~flags; | |
326 | } | |
7806f3dd NL |
327 | |
328 | int EVP_MD_CTX_test_flags(const EVP_MD_CTX *ctx, int flags) | |
0f113f3e MC |
329 | { |
330 | return (ctx->flags & flags); | |
331 | } | |
e92f9f45 DSH |
332 | |
333 | void EVP_CIPHER_CTX_set_flags(EVP_CIPHER_CTX *ctx, int flags) | |
0f113f3e MC |
334 | { |
335 | ctx->flags |= flags; | |
336 | } | |
e92f9f45 DSH |
337 | |
338 | void EVP_CIPHER_CTX_clear_flags(EVP_CIPHER_CTX *ctx, int flags) | |
0f113f3e MC |
339 | { |
340 | ctx->flags &= ~flags; | |
341 | } | |
e92f9f45 DSH |
342 | |
343 | int EVP_CIPHER_CTX_test_flags(const EVP_CIPHER_CTX *ctx, int flags) | |
0f113f3e MC |
344 | { |
345 | return (ctx->flags & flags); | |
346 | } |