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Commit | Line | Data |
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62867571 | 1 | /* |
fd38836b | 2 | * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved. |
58964a49 | 3 | * |
4a8b0c55 | 4 | * Licensed under the Apache License 2.0 (the "License"). You may not use |
62867571 RS |
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 | |
58964a49 RE |
8 | */ |
9 | ||
10 | #include <stdio.h> | |
b39fc560 | 11 | #include "internal/cryptlib.h" |
ec577822 BM |
12 | #include <openssl/evp.h> |
13 | #include <openssl/objects.h> | |
718b133a MC |
14 | #include <openssl/params.h> |
15 | #include <openssl/core_names.h> | |
2db6bf6f | 16 | #include "internal/evp_int.h" |
3653d0c2 | 17 | #include "internal/provider.h" |
7638370c | 18 | #include "evp_locl.h" |
58964a49 | 19 | |
6b691a5c | 20 | int EVP_CIPHER_param_to_asn1(EVP_CIPHER_CTX *c, ASN1_TYPE *type) |
0f113f3e MC |
21 | { |
22 | int ret; | |
718b133a | 23 | const EVP_CIPHER *cipher = c->cipher; |
0f113f3e | 24 | |
718b133a MC |
25 | if (cipher->prov != NULL) { |
26 | /* | |
27 | * The cipher has come from a provider and won't have the default flags. | |
28 | * Find the implicit form so we can check the flags. | |
29 | * TODO(3.0): This won't work for 3rd party ciphers we know nothing about | |
30 | * We'll need to think of something else for those. | |
31 | */ | |
32 | cipher = EVP_get_cipherbynid(cipher->nid); | |
33 | if (cipher == NULL) { | |
34 | EVPerr(EVP_F_EVP_CIPHER_PARAM_TO_ASN1, ASN1_R_UNSUPPORTED_CIPHER); | |
35 | return -1; | |
36 | } | |
37 | } | |
38 | ||
39 | if (cipher->set_asn1_parameters != NULL) | |
40 | ret = cipher->set_asn1_parameters(c, type); | |
41 | else if (cipher->flags & EVP_CIPH_FLAG_DEFAULT_ASN1) { | |
42 | switch (EVP_CIPHER_mode(cipher)) { | |
2acdef5e | 43 | case EVP_CIPH_WRAP_MODE: |
718b133a | 44 | if (EVP_CIPHER_nid(cipher) == NID_id_smime_alg_CMS3DESwrap) |
4ec36aff | 45 | ASN1_TYPE_set(type, V_ASN1_NULL, NULL); |
0f113f3e | 46 | ret = 1; |
2acdef5e DSH |
47 | break; |
48 | ||
49 | case EVP_CIPH_GCM_MODE: | |
50 | case EVP_CIPH_CCM_MODE: | |
51 | case EVP_CIPH_XTS_MODE: | |
52 | case EVP_CIPH_OCB_MODE: | |
49c9c1b3 | 53 | ret = -2; |
2acdef5e DSH |
54 | break; |
55 | ||
56 | default: | |
0f113f3e | 57 | ret = EVP_CIPHER_set_asn1_iv(c, type); |
2acdef5e | 58 | } |
0f113f3e MC |
59 | } else |
60 | ret = -1; | |
49c9c1b3 DO |
61 | if (ret <= 0) |
62 | EVPerr(EVP_F_EVP_CIPHER_PARAM_TO_ASN1, ret == -2 ? | |
63 | ASN1_R_UNSUPPORTED_CIPHER : | |
64 | EVP_R_CIPHER_PARAMETER_ERROR); | |
65 | if (ret < -1) | |
66 | ret = -1; | |
26a7d938 | 67 | return ret; |
0f113f3e | 68 | } |
58964a49 | 69 | |
6b691a5c | 70 | int EVP_CIPHER_asn1_to_param(EVP_CIPHER_CTX *c, ASN1_TYPE *type) |
0f113f3e MC |
71 | { |
72 | int ret; | |
718b133a MC |
73 | const EVP_CIPHER *cipher = c->cipher; |
74 | ||
75 | if (cipher->prov != NULL) { | |
76 | /* | |
77 | * The cipher has come from a provider and won't have the default flags. | |
78 | * Find the implicit form so we can check the flags. | |
79 | */ | |
80 | cipher = EVP_get_cipherbynid(cipher->nid); | |
81 | if (cipher == NULL) | |
82 | return -1; | |
83 | } | |
0f113f3e | 84 | |
718b133a MC |
85 | if (cipher->get_asn1_parameters != NULL) |
86 | ret = cipher->get_asn1_parameters(c, type); | |
87 | else if (cipher->flags & EVP_CIPH_FLAG_DEFAULT_ASN1) { | |
88 | switch (EVP_CIPHER_mode(cipher)) { | |
2acdef5e DSH |
89 | |
90 | case EVP_CIPH_WRAP_MODE: | |
91 | ret = 1; | |
92 | break; | |
93 | ||
94 | case EVP_CIPH_GCM_MODE: | |
95 | case EVP_CIPH_CCM_MODE: | |
96 | case EVP_CIPH_XTS_MODE: | |
97 | case EVP_CIPH_OCB_MODE: | |
49c9c1b3 | 98 | ret = -2; |
2acdef5e DSH |
99 | break; |
100 | ||
101 | default: | |
102 | ret = EVP_CIPHER_get_asn1_iv(c, type); | |
103 | break; | |
104 | } | |
0f113f3e MC |
105 | } else |
106 | ret = -1; | |
49c9c1b3 DO |
107 | if (ret <= 0) |
108 | EVPerr(EVP_F_EVP_CIPHER_ASN1_TO_PARAM, ret == -2 ? | |
109 | EVP_R_UNSUPPORTED_CIPHER : | |
110 | EVP_R_CIPHER_PARAMETER_ERROR); | |
111 | if (ret < -1) | |
112 | ret = -1; | |
26a7d938 | 113 | return ret; |
0f113f3e | 114 | } |
58964a49 | 115 | |
718b133a | 116 | int EVP_CIPHER_get_asn1_iv(EVP_CIPHER_CTX *ctx, ASN1_TYPE *type) |
0f113f3e MC |
117 | { |
118 | int i = 0; | |
119 | unsigned int l; | |
120 | ||
121 | if (type != NULL) { | |
718b133a MC |
122 | unsigned char iv[EVP_MAX_IV_LENGTH]; |
123 | ||
124 | l = EVP_CIPHER_CTX_iv_length(ctx); | |
125 | if (!ossl_assert(l <= sizeof(iv))) | |
126 | return -1; | |
127 | i = ASN1_TYPE_get_octetstring(type, iv, l); | |
0f113f3e | 128 | if (i != (int)l) |
26a7d938 | 129 | return -1; |
718b133a MC |
130 | |
131 | if (!EVP_CipherInit_ex(ctx, NULL, NULL, NULL, iv, -1)) | |
132 | return -1; | |
0f113f3e | 133 | } |
26a7d938 | 134 | return i; |
0f113f3e | 135 | } |
58964a49 | 136 | |
6b691a5c | 137 | int EVP_CIPHER_set_asn1_iv(EVP_CIPHER_CTX *c, ASN1_TYPE *type) |
0f113f3e MC |
138 | { |
139 | int i = 0; | |
140 | unsigned int j; | |
141 | ||
142 | if (type != NULL) { | |
143 | j = EVP_CIPHER_CTX_iv_length(c); | |
144 | OPENSSL_assert(j <= sizeof(c->iv)); | |
145 | i = ASN1_TYPE_set_octetstring(type, c->oiv, j); | |
146 | } | |
26a7d938 | 147 | return i; |
0f113f3e | 148 | } |
884e8ec6 DSH |
149 | |
150 | /* Convert the various cipher NIDs and dummies to a proper OID NID */ | |
84fa704c | 151 | int EVP_CIPHER_type(const EVP_CIPHER *ctx) |
884e8ec6 | 152 | { |
0f113f3e MC |
153 | int nid; |
154 | ASN1_OBJECT *otmp; | |
155 | nid = EVP_CIPHER_nid(ctx); | |
884e8ec6 | 156 | |
0f113f3e | 157 | switch (nid) { |
884e8ec6 | 158 | |
0f113f3e MC |
159 | case NID_rc2_cbc: |
160 | case NID_rc2_64_cbc: | |
161 | case NID_rc2_40_cbc: | |
884e8ec6 | 162 | |
0f113f3e | 163 | return NID_rc2_cbc; |
884e8ec6 | 164 | |
0f113f3e MC |
165 | case NID_rc4: |
166 | case NID_rc4_40: | |
884e8ec6 | 167 | |
0f113f3e | 168 | return NID_rc4; |
884e8ec6 | 169 | |
0f113f3e MC |
170 | case NID_aes_128_cfb128: |
171 | case NID_aes_128_cfb8: | |
172 | case NID_aes_128_cfb1: | |
8d1ebe0b | 173 | |
0f113f3e | 174 | return NID_aes_128_cfb128; |
8d1ebe0b | 175 | |
0f113f3e MC |
176 | case NID_aes_192_cfb128: |
177 | case NID_aes_192_cfb8: | |
178 | case NID_aes_192_cfb1: | |
8d1ebe0b | 179 | |
0f113f3e | 180 | return NID_aes_192_cfb128; |
8d1ebe0b | 181 | |
0f113f3e MC |
182 | case NID_aes_256_cfb128: |
183 | case NID_aes_256_cfb8: | |
184 | case NID_aes_256_cfb1: | |
8d1ebe0b | 185 | |
0f113f3e | 186 | return NID_aes_256_cfb128; |
8d1ebe0b | 187 | |
0f113f3e MC |
188 | case NID_des_cfb64: |
189 | case NID_des_cfb8: | |
190 | case NID_des_cfb1: | |
8d1ebe0b | 191 | |
0f113f3e | 192 | return NID_des_cfb64; |
8d1ebe0b | 193 | |
0f113f3e MC |
194 | case NID_des_ede3_cfb64: |
195 | case NID_des_ede3_cfb8: | |
196 | case NID_des_ede3_cfb1: | |
7e765bf2 | 197 | |
0f113f3e | 198 | return NID_des_cfb64; |
7e765bf2 | 199 | |
0f113f3e MC |
200 | default: |
201 | /* Check it has an OID and it is valid */ | |
202 | otmp = OBJ_nid2obj(nid); | |
2e430277 | 203 | if (OBJ_get0_data(otmp) == NULL) |
0f113f3e MC |
204 | nid = NID_undef; |
205 | ASN1_OBJECT_free(otmp); | |
206 | return nid; | |
207 | } | |
884e8ec6 DSH |
208 | } |
209 | ||
718b133a | 210 | int EVP_CIPHER_block_size(const EVP_CIPHER *cipher) |
0f113f3e | 211 | { |
718b133a MC |
212 | if (cipher->prov != NULL) { |
213 | if (cipher->blocksize != NULL) | |
214 | return cipher->blocksize(); | |
215 | /* We default to a block size of 1 */ | |
216 | return 1; | |
217 | } | |
218 | return cipher->block_size; | |
0f113f3e | 219 | } |
7806f3dd | 220 | |
6343829a | 221 | int EVP_CIPHER_CTX_block_size(const EVP_CIPHER_CTX *ctx) |
0f113f3e | 222 | { |
718b133a | 223 | return EVP_CIPHER_block_size(ctx->cipher); |
0f113f3e | 224 | } |
7806f3dd | 225 | |
e79f8773 RL |
226 | int EVP_CIPHER_impl_ctx_size(const EVP_CIPHER *e) |
227 | { | |
228 | return e->ctx_size; | |
229 | } | |
230 | ||
0f113f3e MC |
231 | int EVP_Cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, |
232 | const unsigned char *in, unsigned int inl) | |
233 | { | |
718b133a MC |
234 | if (ctx->cipher->prov != NULL) { |
235 | if (ctx->cipher->ccipher != NULL) | |
236 | return ctx->cipher->ccipher(ctx->provctx, out, in, (size_t)inl); | |
237 | return 0; | |
238 | } | |
239 | ||
0f113f3e MC |
240 | return ctx->cipher->do_cipher(ctx, out, in, inl); |
241 | } | |
7806f3dd NL |
242 | |
243 | const EVP_CIPHER *EVP_CIPHER_CTX_cipher(const EVP_CIPHER_CTX *ctx) | |
0f113f3e MC |
244 | { |
245 | return ctx->cipher; | |
246 | } | |
7806f3dd | 247 | |
83b06347 RL |
248 | int EVP_CIPHER_CTX_encrypting(const EVP_CIPHER_CTX *ctx) |
249 | { | |
250 | return ctx->encrypt; | |
251 | } | |
252 | ||
7806f3dd | 253 | unsigned long EVP_CIPHER_flags(const EVP_CIPHER *cipher) |
0f113f3e MC |
254 | { |
255 | return cipher->flags; | |
256 | } | |
7806f3dd | 257 | |
7806f3dd | 258 | void *EVP_CIPHER_CTX_get_app_data(const EVP_CIPHER_CTX *ctx) |
0f113f3e MC |
259 | { |
260 | return ctx->app_data; | |
261 | } | |
7806f3dd NL |
262 | |
263 | void EVP_CIPHER_CTX_set_app_data(EVP_CIPHER_CTX *ctx, void *data) | |
0f113f3e MC |
264 | { |
265 | ctx->app_data = data; | |
266 | } | |
7806f3dd | 267 | |
44ab2dfd | 268 | void *EVP_CIPHER_CTX_get_cipher_data(const EVP_CIPHER_CTX *ctx) |
83b06347 RL |
269 | { |
270 | return ctx->cipher_data; | |
271 | } | |
272 | ||
98ee7543 MC |
273 | void *EVP_CIPHER_CTX_set_cipher_data(EVP_CIPHER_CTX *ctx, void *cipher_data) |
274 | { | |
275 | void *old_cipher_data; | |
276 | ||
277 | old_cipher_data = ctx->cipher_data; | |
278 | ctx->cipher_data = cipher_data; | |
279 | ||
280 | return old_cipher_data; | |
281 | } | |
282 | ||
6343829a | 283 | int EVP_CIPHER_iv_length(const EVP_CIPHER *cipher) |
0f113f3e | 284 | { |
718b133a MC |
285 | if (cipher->prov != NULL) { |
286 | if (cipher->iv_length != NULL) | |
287 | return (int)cipher->iv_length(); | |
288 | return 0; | |
289 | } | |
290 | ||
0f113f3e MC |
291 | return cipher->iv_len; |
292 | } | |
7806f3dd | 293 | |
6343829a | 294 | int EVP_CIPHER_CTX_iv_length(const EVP_CIPHER_CTX *ctx) |
0f113f3e | 295 | { |
718b133a | 296 | return EVP_CIPHER_iv_length(ctx->cipher); |
0f113f3e | 297 | } |
7806f3dd | 298 | |
83b06347 RL |
299 | const unsigned char *EVP_CIPHER_CTX_original_iv(const EVP_CIPHER_CTX *ctx) |
300 | { | |
301 | return ctx->oiv; | |
302 | } | |
303 | ||
304 | const unsigned char *EVP_CIPHER_CTX_iv(const EVP_CIPHER_CTX *ctx) | |
305 | { | |
306 | return ctx->iv; | |
307 | } | |
308 | ||
309 | unsigned char *EVP_CIPHER_CTX_iv_noconst(EVP_CIPHER_CTX *ctx) | |
310 | { | |
311 | return ctx->iv; | |
312 | } | |
313 | ||
314 | unsigned char *EVP_CIPHER_CTX_buf_noconst(EVP_CIPHER_CTX *ctx) | |
315 | { | |
316 | return ctx->buf; | |
317 | } | |
318 | ||
319 | int EVP_CIPHER_CTX_num(const EVP_CIPHER_CTX *ctx) | |
320 | { | |
321 | return ctx->num; | |
322 | } | |
323 | ||
324 | void EVP_CIPHER_CTX_set_num(EVP_CIPHER_CTX *ctx, int num) | |
325 | { | |
326 | ctx->num = num; | |
327 | } | |
328 | ||
6343829a | 329 | int EVP_CIPHER_key_length(const EVP_CIPHER *cipher) |
0f113f3e | 330 | { |
df05f2ce MC |
331 | if (cipher->prov != NULL) { |
332 | if (cipher->key_length != NULL) | |
333 | return (int)cipher->key_length(); | |
334 | return -1; | |
335 | } | |
336 | ||
0f113f3e MC |
337 | return cipher->key_len; |
338 | } | |
7806f3dd | 339 | |
6343829a | 340 | int EVP_CIPHER_CTX_key_length(const EVP_CIPHER_CTX *ctx) |
0f113f3e | 341 | { |
df05f2ce MC |
342 | /* |
343 | * TODO(3.0): This may need to change if/when we introduce variable length | |
344 | * key ciphers into the providers. | |
345 | */ | |
346 | if (ctx->cipher != NULL && ctx->cipher->prov != NULL) | |
347 | return EVP_CIPHER_key_length(ctx->cipher); | |
0f113f3e MC |
348 | return ctx->key_len; |
349 | } | |
7806f3dd NL |
350 | |
351 | int EVP_CIPHER_nid(const EVP_CIPHER *cipher) | |
0f113f3e MC |
352 | { |
353 | return cipher->nid; | |
354 | } | |
7806f3dd NL |
355 | |
356 | int EVP_CIPHER_CTX_nid(const EVP_CIPHER_CTX *ctx) | |
0f113f3e MC |
357 | { |
358 | return ctx->cipher->nid; | |
359 | } | |
7806f3dd | 360 | |
718b133a MC |
361 | int EVP_CIPHER_mode(const EVP_CIPHER *cipher) |
362 | { | |
363 | if (cipher->prov != NULL) { | |
364 | int mode; | |
365 | ||
366 | /* Cipher comes from a provider - so ask the provider for the mode */ | |
367 | OSSL_PARAM params[] = { | |
368 | OSSL_PARAM_int(OSSL_CIPHER_PARAM_MODE, NULL), | |
369 | OSSL_PARAM_END | |
370 | }; | |
371 | ||
372 | params[0].data = &mode; | |
373 | ||
374 | if (cipher->get_params == NULL) { | |
375 | EVPerr(EVP_F_EVP_CIPHER_MODE, EVP_R_CTRL_NOT_IMPLEMENTED); | |
376 | return 0; | |
377 | } | |
378 | ||
379 | if (!cipher->get_params(params)) | |
380 | return 0; | |
381 | ||
382 | return mode; | |
383 | } | |
384 | return EVP_CIPHER_flags(cipher) & EVP_CIPH_MODE; | |
385 | } | |
386 | ||
387 | ||
0f113f3e MC |
388 | int EVP_MD_block_size(const EVP_MD *md) |
389 | { | |
7556b9df MC |
390 | if (md == NULL) { |
391 | EVPerr(EVP_F_EVP_MD_BLOCK_SIZE, EVP_R_MESSAGE_DIGEST_IS_NULL); | |
392 | return -1; | |
393 | } | |
394 | ||
395 | if (md->prov != NULL && md->dblock_size != NULL) | |
396 | return (int)md->dblock_size(); | |
397 | ||
0f113f3e MC |
398 | return md->block_size; |
399 | } | |
7806f3dd NL |
400 | |
401 | int EVP_MD_type(const EVP_MD *md) | |
0f113f3e MC |
402 | { |
403 | return md->type; | |
404 | } | |
7806f3dd NL |
405 | |
406 | int EVP_MD_pkey_type(const EVP_MD *md) | |
0f113f3e MC |
407 | { |
408 | return md->pkey_type; | |
409 | } | |
7806f3dd | 410 | |
6343829a | 411 | int EVP_MD_size(const EVP_MD *md) |
0f113f3e MC |
412 | { |
413 | if (!md) { | |
414 | EVPerr(EVP_F_EVP_MD_SIZE, EVP_R_MESSAGE_DIGEST_IS_NULL); | |
415 | return -1; | |
416 | } | |
8c8cf0d9 MC |
417 | |
418 | if (md->prov != NULL && md->size != NULL) | |
419 | return (int)md->size(); | |
420 | ||
0f113f3e MC |
421 | return md->md_size; |
422 | } | |
7806f3dd | 423 | |
e5fa864f | 424 | unsigned long EVP_MD_flags(const EVP_MD *md) |
0f113f3e MC |
425 | { |
426 | return md->flags; | |
427 | } | |
e5fa864f | 428 | |
2db6bf6f RL |
429 | EVP_MD *EVP_MD_meth_new(int md_type, int pkey_type) |
430 | { | |
43ecb9c3 RS |
431 | EVP_MD *md = OPENSSL_zalloc(sizeof(*md)); |
432 | ||
2db6bf6f RL |
433 | if (md != NULL) { |
434 | md->type = md_type; | |
435 | md->pkey_type = pkey_type; | |
3653d0c2 MC |
436 | md->lock = CRYPTO_THREAD_lock_new(); |
437 | if (md->lock == NULL) { | |
438 | OPENSSL_free(md); | |
439 | return NULL; | |
440 | } | |
441 | md->refcnt = 1; | |
2db6bf6f RL |
442 | } |
443 | return md; | |
444 | } | |
df05f2ce | 445 | |
2db6bf6f RL |
446 | EVP_MD *EVP_MD_meth_dup(const EVP_MD *md) |
447 | { | |
448 | EVP_MD *to = EVP_MD_meth_new(md->type, md->pkey_type); | |
43ecb9c3 | 449 | |
df05f2ce MC |
450 | if (to != NULL) { |
451 | CRYPTO_RWLOCK *lock = to->lock; | |
2db6bf6f | 452 | memcpy(to, md, sizeof(*to)); |
df05f2ce MC |
453 | to->lock = lock; |
454 | } | |
2db6bf6f RL |
455 | return to; |
456 | } | |
3653d0c2 MC |
457 | |
458 | int EVP_MD_upref(EVP_MD *md) | |
459 | { | |
460 | int ref = 0; | |
461 | ||
462 | CRYPTO_UP_REF(&md->refcnt, &ref, md->lock); | |
463 | return 1; | |
464 | } | |
465 | ||
2db6bf6f RL |
466 | void EVP_MD_meth_free(EVP_MD *md) |
467 | { | |
3653d0c2 MC |
468 | if (md != NULL) { |
469 | int i; | |
470 | ||
471 | CRYPTO_DOWN_REF(&md->refcnt, &i, md->lock); | |
472 | if (i > 0) | |
473 | return; | |
474 | ossl_provider_free(md->prov); | |
475 | CRYPTO_THREAD_lock_free(md->lock); | |
476 | OPENSSL_free(md); | |
477 | } | |
2db6bf6f RL |
478 | } |
479 | int EVP_MD_meth_set_input_blocksize(EVP_MD *md, int blocksize) | |
480 | { | |
481 | md->block_size = blocksize; | |
482 | return 1; | |
483 | } | |
484 | int EVP_MD_meth_set_result_size(EVP_MD *md, int resultsize) | |
485 | { | |
486 | md->md_size = resultsize; | |
487 | return 1; | |
488 | } | |
489 | int EVP_MD_meth_set_app_datasize(EVP_MD *md, int datasize) | |
490 | { | |
491 | md->ctx_size = datasize; | |
492 | return 1; | |
493 | } | |
494 | int EVP_MD_meth_set_flags(EVP_MD *md, unsigned long flags) | |
495 | { | |
496 | md->flags = flags; | |
497 | return 1; | |
498 | } | |
499 | int EVP_MD_meth_set_init(EVP_MD *md, int (*init)(EVP_MD_CTX *ctx)) | |
500 | { | |
501 | md->init = init; | |
502 | return 1; | |
503 | } | |
504 | int EVP_MD_meth_set_update(EVP_MD *md, int (*update)(EVP_MD_CTX *ctx, | |
505 | const void *data, | |
506 | size_t count)) | |
507 | { | |
508 | md->update = update; | |
509 | return 1; | |
510 | } | |
511 | int EVP_MD_meth_set_final(EVP_MD *md, int (*final)(EVP_MD_CTX *ctx, | |
512 | unsigned char *md)) | |
513 | { | |
514 | md->final = final; | |
515 | return 1; | |
516 | } | |
517 | int EVP_MD_meth_set_copy(EVP_MD *md, int (*copy)(EVP_MD_CTX *to, | |
518 | const EVP_MD_CTX *from)) | |
519 | { | |
520 | md->copy = copy; | |
521 | return 1; | |
522 | } | |
523 | int EVP_MD_meth_set_cleanup(EVP_MD *md, int (*cleanup)(EVP_MD_CTX *ctx)) | |
524 | { | |
525 | md->cleanup = cleanup; | |
526 | return 1; | |
527 | } | |
528 | int EVP_MD_meth_set_ctrl(EVP_MD *md, int (*ctrl)(EVP_MD_CTX *ctx, int cmd, | |
529 | int p1, void *p2)) | |
530 | { | |
531 | md->md_ctrl = ctrl; | |
532 | return 1; | |
533 | } | |
534 | ||
535 | int EVP_MD_meth_get_input_blocksize(const EVP_MD *md) | |
536 | { | |
537 | return md->block_size; | |
538 | } | |
539 | int EVP_MD_meth_get_result_size(const EVP_MD *md) | |
540 | { | |
541 | return md->md_size; | |
542 | } | |
543 | int EVP_MD_meth_get_app_datasize(const EVP_MD *md) | |
544 | { | |
545 | return md->ctx_size; | |
546 | } | |
547 | unsigned long EVP_MD_meth_get_flags(const EVP_MD *md) | |
548 | { | |
8bfa99f0 | 549 | return md->flags; |
2db6bf6f RL |
550 | } |
551 | int (*EVP_MD_meth_get_init(const EVP_MD *md))(EVP_MD_CTX *ctx) | |
552 | { | |
553 | return md->init; | |
554 | } | |
555 | int (*EVP_MD_meth_get_update(const EVP_MD *md))(EVP_MD_CTX *ctx, | |
556 | const void *data, | |
557 | size_t count) | |
558 | { | |
559 | return md->update; | |
560 | } | |
561 | int (*EVP_MD_meth_get_final(const EVP_MD *md))(EVP_MD_CTX *ctx, | |
562 | unsigned char *md) | |
563 | { | |
564 | return md->final; | |
565 | } | |
566 | int (*EVP_MD_meth_get_copy(const EVP_MD *md))(EVP_MD_CTX *to, | |
567 | const EVP_MD_CTX *from) | |
568 | { | |
569 | return md->copy; | |
570 | } | |
571 | int (*EVP_MD_meth_get_cleanup(const EVP_MD *md))(EVP_MD_CTX *ctx) | |
572 | { | |
573 | return md->cleanup; | |
574 | } | |
575 | int (*EVP_MD_meth_get_ctrl(const EVP_MD *md))(EVP_MD_CTX *ctx, int cmd, | |
576 | int p1, void *p2) | |
577 | { | |
578 | return md->md_ctrl; | |
579 | } | |
580 | ||
7806f3dd | 581 | const EVP_MD *EVP_MD_CTX_md(const EVP_MD_CTX *ctx) |
0f113f3e | 582 | { |
b7c913c8 | 583 | if (ctx == NULL) |
0f113f3e | 584 | return NULL; |
b7c913c8 | 585 | return ctx->reqdigest; |
0f113f3e | 586 | } |
7806f3dd | 587 | |
7638370c RL |
588 | EVP_PKEY_CTX *EVP_MD_CTX_pkey_ctx(const EVP_MD_CTX *ctx) |
589 | { | |
590 | return ctx->pctx; | |
591 | } | |
592 | ||
00902d94 PY |
593 | void EVP_MD_CTX_set_pkey_ctx(EVP_MD_CTX *ctx, EVP_PKEY_CTX *pctx) |
594 | { | |
81c79453 PY |
595 | /* |
596 | * it's reasonable to set NULL pctx (a.k.a clear the ctx->pctx), so | |
597 | * we have to deal with the cleanup job here. | |
598 | */ | |
599 | if (!EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_KEEP_PKEY_CTX)) | |
600 | EVP_PKEY_CTX_free(ctx->pctx); | |
601 | ||
00902d94 | 602 | ctx->pctx = pctx; |
81c79453 PY |
603 | |
604 | if (pctx != NULL) { | |
605 | /* make sure pctx is not freed when destroying EVP_MD_CTX */ | |
606 | EVP_MD_CTX_set_flags(ctx, EVP_MD_CTX_FLAG_KEEP_PKEY_CTX); | |
607 | } else { | |
608 | EVP_MD_CTX_clear_flags(ctx, EVP_MD_CTX_FLAG_KEEP_PKEY_CTX); | |
609 | } | |
00902d94 PY |
610 | } |
611 | ||
7638370c RL |
612 | void *EVP_MD_CTX_md_data(const EVP_MD_CTX *ctx) |
613 | { | |
614 | return ctx->md_data; | |
615 | } | |
616 | ||
617 | int (*EVP_MD_CTX_update_fn(EVP_MD_CTX *ctx))(EVP_MD_CTX *ctx, | |
618 | const void *data, size_t count) | |
619 | { | |
620 | return ctx->update; | |
621 | } | |
622 | ||
623 | void EVP_MD_CTX_set_update_fn(EVP_MD_CTX *ctx, | |
624 | int (*update) (EVP_MD_CTX *ctx, | |
625 | const void *data, size_t count)) | |
626 | { | |
627 | ctx->update = update; | |
628 | } | |
629 | ||
7806f3dd | 630 | void EVP_MD_CTX_set_flags(EVP_MD_CTX *ctx, int flags) |
0f113f3e MC |
631 | { |
632 | ctx->flags |= flags; | |
633 | } | |
7806f3dd NL |
634 | |
635 | void EVP_MD_CTX_clear_flags(EVP_MD_CTX *ctx, int flags) | |
0f113f3e MC |
636 | { |
637 | ctx->flags &= ~flags; | |
638 | } | |
7806f3dd NL |
639 | |
640 | int EVP_MD_CTX_test_flags(const EVP_MD_CTX *ctx, int flags) | |
0f113f3e MC |
641 | { |
642 | return (ctx->flags & flags); | |
643 | } | |
e92f9f45 DSH |
644 | |
645 | void EVP_CIPHER_CTX_set_flags(EVP_CIPHER_CTX *ctx, int flags) | |
0f113f3e MC |
646 | { |
647 | ctx->flags |= flags; | |
648 | } | |
e92f9f45 DSH |
649 | |
650 | void EVP_CIPHER_CTX_clear_flags(EVP_CIPHER_CTX *ctx, int flags) | |
0f113f3e MC |
651 | { |
652 | ctx->flags &= ~flags; | |
653 | } | |
e92f9f45 DSH |
654 | |
655 | int EVP_CIPHER_CTX_test_flags(const EVP_CIPHER_CTX *ctx, int flags) | |
0f113f3e MC |
656 | { |
657 | return (ctx->flags & flags); | |
658 | } | |
f842b6b2 RL |
659 | |
660 | int EVP_str2ctrl(int (*cb)(void *ctx, int cmd, void *buf, size_t buflen), | |
661 | void *ctx, int cmd, const char *value) | |
662 | { | |
663 | size_t len; | |
664 | ||
665 | len = strlen(value); | |
666 | if (len > INT_MAX) | |
667 | return -1; | |
668 | return cb(ctx, cmd, (void *)value, len); | |
669 | } | |
670 | ||
671 | int EVP_hex2ctrl(int (*cb)(void *ctx, int cmd, void *buf, size_t buflen), | |
672 | void *ctx, int cmd, const char *hex) | |
673 | { | |
674 | unsigned char *bin; | |
675 | long binlen; | |
676 | int rv = -1; | |
677 | ||
678 | bin = OPENSSL_hexstr2buf(hex, &binlen); | |
679 | if (bin == NULL) | |
680 | return 0; | |
681 | if (binlen <= INT_MAX) | |
682 | rv = cb(ctx, cmd, bin, binlen); | |
683 | OPENSSL_free(bin); | |
684 | return rv; | |
685 | } |