]>
Commit | Line | Data |
---|---|---|
62867571 | 1 | /* |
a28d06f3 | 2 | * Copyright 1995-2021 The OpenSSL Project Authors. All Rights Reserved. |
5ba372b1 | 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 | |
5ba372b1 | 8 | */ |
d02b48c6 | 9 | |
e4468e6d P |
10 | /* We need to use some engine deprecated APIs */ |
11 | #define OPENSSL_SUPPRESS_DEPRECATED | |
12 | ||
d02b48c6 | 13 | #include <stdio.h> |
ec577822 BM |
14 | #include <openssl/objects.h> |
15 | #include <openssl/evp.h> | |
ded346fa | 16 | #include <openssl/ec.h> |
3f773c91 TM |
17 | #ifndef FIPS_MODULE |
18 | # include <openssl/engine.h> | |
19 | #endif | |
d5e5e2ff SL |
20 | #include <openssl/params.h> |
21 | #include <openssl/core_names.h> | |
22 | #include "internal/cryptlib.h" | |
3653d0c2 | 23 | #include "internal/provider.h" |
6c9bc258 TM |
24 | #include "internal/core.h" |
25 | #include "crypto/evp.h" | |
706457b7 | 26 | #include "evp_local.h" |
d02b48c6 | 27 | |
357bccc8 MC |
28 | static void cleanup_old_md_data(EVP_MD_CTX *ctx, int force) |
29 | { | |
30 | if (ctx->digest != NULL) { | |
31 | if (ctx->digest->cleanup != NULL | |
32 | && !EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_CLEANED)) | |
33 | ctx->digest->cleanup(ctx); | |
34 | if (ctx->md_data != NULL && ctx->digest->ctx_size > 0 | |
35 | && (!EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_REUSE) | |
8086b267 | 36 | || force)) { |
357bccc8 | 37 | OPENSSL_clear_free(ctx->md_data, ctx->digest->ctx_size); |
8086b267 MC |
38 | ctx->md_data = NULL; |
39 | } | |
357bccc8 MC |
40 | } |
41 | } | |
aa64cf24 | 42 | |
3101ab60 MC |
43 | void evp_md_ctx_clear_digest(EVP_MD_CTX *ctx, int force) |
44 | { | |
7c14d0c1 | 45 | if (ctx->algctx != NULL) { |
8549b972 | 46 | if (ctx->digest != NULL && ctx->digest->freectx != NULL) |
7c14d0c1 SL |
47 | ctx->digest->freectx(ctx->algctx); |
48 | ctx->algctx = NULL; | |
8c8cf0d9 MC |
49 | EVP_MD_CTX_set_flags(ctx, EVP_MD_CTX_FLAG_CLEANED); |
50 | } | |
51 | ||
0be6cf0c | 52 | /* Code below to be removed when legacy support is dropped. */ |
8c8cf0d9 | 53 | |
74cabf3f RL |
54 | /* |
55 | * Don't assume ctx->md_data was cleaned in EVP_Digest_Final, because | |
56 | * sometimes only copies of the context are ever finalised. | |
57 | */ | |
357bccc8 | 58 | cleanup_old_md_data(ctx, force); |
3101ab60 MC |
59 | if (force) |
60 | ctx->digest = NULL; | |
319e518a | 61 | |
f844f9eb | 62 | #if !defined(FIPS_MODULE) && !defined(OPENSSL_NO_ENGINE) |
7c96dbcd | 63 | ENGINE_finish(ctx->engine); |
3101ab60 | 64 | ctx->engine = NULL; |
74cabf3f | 65 | #endif |
8549b972 P |
66 | |
67 | /* Non legacy code, this has to be later than the ctx->digest cleaning */ | |
68 | EVP_MD_free(ctx->fetched_digest); | |
69 | ctx->fetched_digest = NULL; | |
70 | ctx->reqdigest = NULL; | |
3101ab60 | 71 | } |
14bec2c4 | 72 | |
3101ab60 MC |
73 | /* This call frees resources associated with the context */ |
74 | int EVP_MD_CTX_reset(EVP_MD_CTX *ctx) | |
75 | { | |
76 | if (ctx == NULL) | |
77 | return 1; | |
78 | ||
79 | #ifndef FIPS_MODULE | |
3101ab60 MC |
80 | /* |
81 | * pctx should be freed by the user of EVP_MD_CTX | |
82 | * if EVP_MD_CTX_FLAG_KEEP_PKEY_CTX is set | |
83 | */ | |
84 | if (!EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_KEEP_PKEY_CTX)) { | |
85 | EVP_PKEY_CTX_free(ctx->pctx); | |
86 | ctx->pctx = NULL; | |
87 | } | |
88 | #endif | |
14bec2c4 | 89 | |
3101ab60 | 90 | evp_md_ctx_clear_digest(ctx, 0); |
3ce2fdab | 91 | OPENSSL_cleanse(ctx, sizeof(*ctx)); |
74cabf3f RL |
92 | |
93 | return 1; | |
0f113f3e | 94 | } |
dbad1690 | 95 | |
ded346fa | 96 | #ifndef FIPS_MODULE |
d8652be0 | 97 | EVP_MD_CTX *evp_md_ctx_new_ex(EVP_PKEY *pkey, const ASN1_OCTET_STRING *id, |
b4250010 | 98 | OSSL_LIB_CTX *libctx, const char *propq) |
ded346fa DDO |
99 | { |
100 | EVP_MD_CTX *ctx; | |
101 | EVP_PKEY_CTX *pctx = NULL; | |
102 | ||
103 | if ((ctx = EVP_MD_CTX_new()) == NULL | |
104 | || (pctx = EVP_PKEY_CTX_new_from_pkey(libctx, pkey, propq)) == NULL) { | |
9311d0c4 | 105 | ERR_raise(ERR_LIB_ASN1, ERR_R_MALLOC_FAILURE); |
ded346fa DDO |
106 | goto err; |
107 | } | |
108 | ||
c2403f36 | 109 | if (id != NULL && EVP_PKEY_CTX_set1_id(pctx, id->data, id->length) <= 0) |
ded346fa | 110 | goto err; |
ded346fa DDO |
111 | |
112 | EVP_MD_CTX_set_pkey_ctx(ctx, pctx); | |
113 | return ctx; | |
114 | ||
115 | err: | |
116 | EVP_PKEY_CTX_free(pctx); | |
117 | EVP_MD_CTX_free(ctx); | |
118 | return NULL; | |
119 | } | |
120 | #endif | |
121 | ||
959ed531 | 122 | EVP_MD_CTX *EVP_MD_CTX_new(void) |
0f113f3e | 123 | { |
74cabf3f RL |
124 | return OPENSSL_zalloc(sizeof(EVP_MD_CTX)); |
125 | } | |
dbad1690 | 126 | |
959ed531 | 127 | void EVP_MD_CTX_free(EVP_MD_CTX *ctx) |
74cabf3f | 128 | { |
8c8cf0d9 MC |
129 | if (ctx == NULL) |
130 | return; | |
131 | ||
8c8cf0d9 | 132 | EVP_MD_CTX_reset(ctx); |
8c8cf0d9 | 133 | OPENSSL_free(ctx); |
0f113f3e | 134 | } |
dbad1690 | 135 | |
4b58d9b4 P |
136 | static int evp_md_init_internal(EVP_MD_CTX *ctx, const EVP_MD *type, |
137 | const OSSL_PARAM params[], ENGINE *impl) | |
0f113f3e | 138 | { |
f844f9eb | 139 | #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE) |
8c8cf0d9 | 140 | ENGINE *tmpimpl = NULL; |
319e518a | 141 | #endif |
8c8cf0d9 | 142 | |
b0002eb0 MC |
143 | #if !defined(FIPS_MODULE) |
144 | if (ctx->pctx != NULL | |
145 | && EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx->pctx) | |
7c14d0c1 | 146 | && ctx->pctx->op.sig.algctx != NULL) { |
b0002eb0 MC |
147 | /* |
148 | * Prior to OpenSSL 3.0 calling EVP_DigestInit_ex() on an mdctx | |
149 | * previously initialised with EVP_DigestSignInit() would retain | |
150 | * information about the key, and re-initialise for another sign | |
151 | * operation. So in that case we redirect to EVP_DigestSignInit() | |
152 | */ | |
153 | if (ctx->pctx->operation == EVP_PKEY_OP_SIGNCTX) | |
154 | return EVP_DigestSignInit(ctx, NULL, type, impl, NULL); | |
155 | if (ctx->pctx->operation == EVP_PKEY_OP_VERIFYCTX) | |
156 | return EVP_DigestVerifyInit(ctx, NULL, type, impl, NULL); | |
9311d0c4 | 157 | ERR_raise(ERR_LIB_EVP, EVP_R_UPDATE_ERROR); |
b0002eb0 MC |
158 | return 0; |
159 | } | |
160 | #endif | |
161 | ||
0f113f3e | 162 | EVP_MD_CTX_clear_flags(ctx, EVP_MD_CTX_FLAG_CLEANED); |
8c8cf0d9 | 163 | |
7c14d0c1 | 164 | if (ctx->algctx != NULL) { |
15de965f | 165 | if (!ossl_assert(ctx->digest != NULL)) { |
9311d0c4 | 166 | ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR); |
15de965f MC |
167 | return 0; |
168 | } | |
169 | if (ctx->digest->freectx != NULL) | |
7c14d0c1 SL |
170 | ctx->digest->freectx(ctx->algctx); |
171 | ctx->algctx = NULL; | |
15de965f MC |
172 | } |
173 | ||
5de9863b | 174 | if (type != NULL) { |
b7c913c8 | 175 | ctx->reqdigest = type; |
5de9863b TM |
176 | } else { |
177 | if (ctx->digest == NULL) { | |
178 | ERR_raise(ERR_LIB_EVP, EVP_R_NO_DIGEST_SET); | |
179 | return 0; | |
180 | } | |
181 | type = ctx->digest; | |
182 | } | |
b7c913c8 | 183 | |
0be6cf0c | 184 | /* Code below to be removed when legacy support is dropped. */ |
f844f9eb | 185 | #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE) |
0f113f3e MC |
186 | /* |
187 | * Whether it's nice or not, "Inits" can be used on "Final"'d contexts so | |
188 | * this context may already have an ENGINE! Try to avoid releasing the | |
189 | * previous handle, re-querying for an ENGINE, and having a | |
0d4fb843 | 190 | * reinitialisation, when it may all be unnecessary. |
0f113f3e | 191 | */ |
10cf46c4 P |
192 | if (ctx->engine != NULL |
193 | && ctx->digest != NULL | |
194 | && type->type == ctx->digest->type) | |
0f113f3e | 195 | goto skip_to_init; |
8c8cf0d9 | 196 | |
10cf46c4 P |
197 | /* |
198 | * Ensure an ENGINE left lying around from last time is cleared (the | |
199 | * previous check attempted to avoid this if the same ENGINE and | |
200 | * EVP_MD could be used). | |
201 | */ | |
202 | ENGINE_finish(ctx->engine); | |
203 | ctx->engine = NULL; | |
98475995 | 204 | |
10cf46c4 | 205 | if (impl == NULL) |
8c8cf0d9 MC |
206 | tmpimpl = ENGINE_get_digest_engine(type->type); |
207 | #endif | |
208 | ||
209 | /* | |
19cfe784 MC |
210 | * If there are engines involved or EVP_MD_CTX_FLAG_NO_INIT is set then we |
211 | * should use legacy handling for now. | |
8c8cf0d9 | 212 | */ |
10cf46c4 P |
213 | if (impl != NULL |
214 | #if !defined(OPENSSL_NO_ENGINE) | |
215 | || ctx->engine != NULL | |
216 | # if !defined(FIPS_MODULE) | |
8c8cf0d9 | 217 | || tmpimpl != NULL |
10cf46c4 | 218 | # endif |
319e518a | 219 | #endif |
d9ad5b16 MC |
220 | || (ctx->flags & EVP_MD_CTX_FLAG_NO_INIT) != 0 |
221 | || type->origin == EVP_ORIG_METH) { | |
8c8cf0d9 MC |
222 | if (ctx->digest == ctx->fetched_digest) |
223 | ctx->digest = NULL; | |
3fd70262 | 224 | EVP_MD_free(ctx->fetched_digest); |
8c8cf0d9 MC |
225 | ctx->fetched_digest = NULL; |
226 | goto legacy; | |
227 | } | |
228 | ||
357bccc8 | 229 | cleanup_old_md_data(ctx, 1); |
8c8cf0d9 | 230 | |
0be6cf0c | 231 | /* Start of non-legacy code below */ |
8c8cf0d9 MC |
232 | |
233 | if (type->prov == NULL) { | |
f844f9eb | 234 | #ifdef FIPS_MODULE |
79c44b4e | 235 | /* We only do explicit fetches inside the FIPS module */ |
9311d0c4 | 236 | ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR); |
319e518a MC |
237 | return 0; |
238 | #else | |
bef9b48e TM |
239 | /* The NULL digest is a special case */ |
240 | EVP_MD *provmd = EVP_MD_fetch(NULL, | |
241 | type->type != NID_undef ? OBJ_nid2sn(type->type) | |
242 | : "NULL", ""); | |
319e518a | 243 | |
31f7ff37 P |
244 | if (provmd == NULL) { |
245 | ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR); | |
8c8cf0d9 | 246 | return 0; |
31f7ff37 | 247 | } |
8c8cf0d9 | 248 | type = provmd; |
3fd70262 | 249 | EVP_MD_free(ctx->fetched_digest); |
8c8cf0d9 | 250 | ctx->fetched_digest = provmd; |
319e518a | 251 | #endif |
8c8cf0d9 MC |
252 | } |
253 | ||
7c14d0c1 | 254 | if (ctx->algctx != NULL && ctx->digest != NULL && ctx->digest != type) { |
d5e5e2ff | 255 | if (ctx->digest->freectx != NULL) |
7c14d0c1 SL |
256 | ctx->digest->freectx(ctx->algctx); |
257 | ctx->algctx = NULL; | |
d5e5e2ff | 258 | } |
31f7ff37 P |
259 | if (type->prov != NULL && ctx->fetched_digest != type) { |
260 | if (!EVP_MD_up_ref((EVP_MD *)type)) { | |
261 | ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR); | |
262 | return 0; | |
263 | } | |
264 | EVP_MD_free(ctx->fetched_digest); | |
265 | ctx->fetched_digest = (EVP_MD *)type; | |
266 | } | |
8c8cf0d9 | 267 | ctx->digest = type; |
7c14d0c1 SL |
268 | if (ctx->algctx == NULL) { |
269 | ctx->algctx = ctx->digest->newctx(ossl_provider_ctx(type->prov)); | |
270 | if (ctx->algctx == NULL) { | |
9311d0c4 | 271 | ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR); |
8c8cf0d9 MC |
272 | return 0; |
273 | } | |
274 | } | |
275 | ||
276 | if (ctx->digest->dinit == NULL) { | |
9311d0c4 | 277 | ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR); |
8c8cf0d9 MC |
278 | return 0; |
279 | } | |
280 | ||
7c14d0c1 | 281 | return ctx->digest->dinit(ctx->algctx, params); |
8c8cf0d9 | 282 | |
0be6cf0c | 283 | /* Code below to be removed when legacy support is dropped. */ |
8c8cf0d9 MC |
284 | legacy: |
285 | ||
f844f9eb | 286 | #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE) |
0f113f3e | 287 | if (type) { |
7c96dbcd | 288 | if (impl != NULL) { |
0f113f3e | 289 | if (!ENGINE_init(impl)) { |
9311d0c4 | 290 | ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR); |
0f113f3e MC |
291 | return 0; |
292 | } | |
7c96dbcd | 293 | } else { |
0f113f3e | 294 | /* Ask if an ENGINE is reserved for this job */ |
8c8cf0d9 | 295 | impl = tmpimpl; |
7c96dbcd RS |
296 | } |
297 | if (impl != NULL) { | |
0f113f3e MC |
298 | /* There's an ENGINE for this job ... (apparently) */ |
299 | const EVP_MD *d = ENGINE_get_digest(impl, type->type); | |
7c96dbcd RS |
300 | |
301 | if (d == NULL) { | |
9311d0c4 | 302 | ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR); |
0f113f3e MC |
303 | ENGINE_finish(impl); |
304 | return 0; | |
305 | } | |
306 | /* We'll use the ENGINE's private digest definition */ | |
307 | type = d; | |
308 | /* | |
309 | * Store the ENGINE functional reference so we know 'type' came | |
310 | * from an ENGINE and we need to release it when done. | |
311 | */ | |
312 | ctx->engine = impl; | |
313 | } else | |
314 | ctx->engine = NULL; | |
0f113f3e | 315 | } |
90e8a310 | 316 | #endif |
0f113f3e | 317 | if (ctx->digest != type) { |
357bccc8 MC |
318 | cleanup_old_md_data(ctx, 1); |
319 | ||
0f113f3e MC |
320 | ctx->digest = type; |
321 | if (!(ctx->flags & EVP_MD_CTX_FLAG_NO_INIT) && type->ctx_size) { | |
322 | ctx->update = type->update; | |
84c15091 | 323 | ctx->md_data = OPENSSL_zalloc(type->ctx_size); |
0f113f3e | 324 | if (ctx->md_data == NULL) { |
9311d0c4 | 325 | ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE); |
0f113f3e MC |
326 | return 0; |
327 | } | |
328 | } | |
329 | } | |
f844f9eb | 330 | #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE) |
0f113f3e | 331 | skip_to_init: |
0b13e9f0 | 332 | #endif |
f844f9eb | 333 | #ifndef FIPS_MODULE |
864b89ce MC |
334 | if (ctx->pctx != NULL |
335 | && (!EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx->pctx) | |
336 | || ctx->pctx->op.sig.signature == NULL)) { | |
0f113f3e MC |
337 | int r; |
338 | r = EVP_PKEY_CTX_ctrl(ctx->pctx, -1, EVP_PKEY_OP_TYPE_SIG, | |
339 | EVP_PKEY_CTRL_DIGESTINIT, 0, ctx); | |
340 | if (r <= 0 && (r != -2)) | |
341 | return 0; | |
342 | } | |
319e518a | 343 | #endif |
0f113f3e MC |
344 | if (ctx->flags & EVP_MD_CTX_FLAG_NO_INIT) |
345 | return 1; | |
346 | return ctx->digest->init(ctx); | |
347 | } | |
d02b48c6 | 348 | |
4b58d9b4 P |
349 | int EVP_DigestInit_ex2(EVP_MD_CTX *ctx, const EVP_MD *type, |
350 | const OSSL_PARAM params[]) | |
351 | { | |
352 | return evp_md_init_internal(ctx, type, params, NULL); | |
353 | } | |
354 | ||
355 | int EVP_DigestInit(EVP_MD_CTX *ctx, const EVP_MD *type) | |
356 | { | |
357 | EVP_MD_CTX_reset(ctx); | |
358 | return evp_md_init_internal(ctx, type, NULL, NULL); | |
359 | } | |
360 | ||
361 | int EVP_DigestInit_ex(EVP_MD_CTX *ctx, const EVP_MD *type, ENGINE *impl) | |
362 | { | |
363 | return evp_md_init_internal(ctx, type, NULL, impl); | |
364 | } | |
365 | ||
f80921b6 | 366 | int EVP_DigestUpdate(EVP_MD_CTX *ctx, const void *data, size_t count) |
0f113f3e | 367 | { |
a8274ea3 MC |
368 | if (count == 0) |
369 | return 1; | |
370 | ||
72df8f88 MC |
371 | if (ctx->pctx != NULL |
372 | && EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx->pctx) | |
7c14d0c1 | 373 | && ctx->pctx->op.sig.algctx != NULL) { |
72df8f88 MC |
374 | /* |
375 | * Prior to OpenSSL 3.0 EVP_DigestSignUpdate() and | |
376 | * EVP_DigestVerifyUpdate() were just macros for EVP_DigestUpdate(). | |
377 | * Some code calls EVP_DigestUpdate() directly even when initialised | |
d8652be0 MC |
378 | * with EVP_DigestSignInit_ex() or |
379 | * EVP_DigestVerifyInit_ex(), so we detect that and redirect to | |
0ab18e79 | 380 | * the correct EVP_Digest*Update() function |
72df8f88 MC |
381 | */ |
382 | if (ctx->pctx->operation == EVP_PKEY_OP_SIGNCTX) | |
383 | return EVP_DigestSignUpdate(ctx, data, count); | |
384 | if (ctx->pctx->operation == EVP_PKEY_OP_VERIFYCTX) | |
385 | return EVP_DigestVerifyUpdate(ctx, data, count); | |
9311d0c4 | 386 | ERR_raise(ERR_LIB_EVP, EVP_R_UPDATE_ERROR); |
72df8f88 MC |
387 | return 0; |
388 | } | |
389 | ||
557d6737 MC |
390 | if (ctx->digest == NULL |
391 | || ctx->digest->prov == NULL | |
392 | || (ctx->flags & EVP_MD_CTX_FLAG_NO_INIT) != 0) | |
8c8cf0d9 MC |
393 | goto legacy; |
394 | ||
395 | if (ctx->digest->dupdate == NULL) { | |
9311d0c4 | 396 | ERR_raise(ERR_LIB_EVP, EVP_R_UPDATE_ERROR); |
8c8cf0d9 MC |
397 | return 0; |
398 | } | |
7c14d0c1 | 399 | return ctx->digest->dupdate(ctx->algctx, data, count); |
8c8cf0d9 | 400 | |
0be6cf0c | 401 | /* Code below to be removed when legacy support is dropped. */ |
8c8cf0d9 | 402 | legacy: |
0f113f3e MC |
403 | return ctx->update(ctx, data, count); |
404 | } | |
d02b48c6 | 405 | |
dbad1690 | 406 | /* The caller can assume that this removes any secret data from the context */ |
2dc769a1 | 407 | int EVP_DigestFinal(EVP_MD_CTX *ctx, unsigned char *md, unsigned int *size) |
0f113f3e MC |
408 | { |
409 | int ret; | |
410 | ret = EVP_DigestFinal_ex(ctx, md, size); | |
959ed531 | 411 | EVP_MD_CTX_reset(ctx); |
0f113f3e MC |
412 | return ret; |
413 | } | |
20d2186c DSH |
414 | |
415 | /* The caller can assume that this removes any secret data from the context */ | |
8c8cf0d9 | 416 | int EVP_DigestFinal_ex(EVP_MD_CTX *ctx, unsigned char *md, unsigned int *isize) |
0f113f3e | 417 | { |
4bec3f6d | 418 | int ret, sz; |
8c8cf0d9 | 419 | size_t size = 0; |
4bec3f6d SL |
420 | size_t mdsize = 0; |
421 | ||
422 | if (ctx->digest == NULL) | |
423 | return 0; | |
8c8cf0d9 | 424 | |
ed576acd | 425 | sz = EVP_MD_get_size(ctx->digest); |
4bec3f6d SL |
426 | if (sz < 0) |
427 | return 0; | |
428 | mdsize = sz; | |
429 | if (ctx->digest->prov == NULL) | |
8c8cf0d9 | 430 | goto legacy; |
54a656ef | 431 | |
8c8cf0d9 | 432 | if (ctx->digest->dfinal == NULL) { |
9311d0c4 | 433 | ERR_raise(ERR_LIB_EVP, EVP_R_FINAL_ERROR); |
8c8cf0d9 MC |
434 | return 0; |
435 | } | |
436 | ||
7c14d0c1 | 437 | ret = ctx->digest->dfinal(ctx->algctx, md, &size, mdsize); |
8c8cf0d9 MC |
438 | |
439 | if (isize != NULL) { | |
440 | if (size <= UINT_MAX) { | |
441 | *isize = (int)size; | |
442 | } else { | |
9311d0c4 | 443 | ERR_raise(ERR_LIB_EVP, EVP_R_FINAL_ERROR); |
8c8cf0d9 MC |
444 | ret = 0; |
445 | } | |
446 | } | |
447 | ||
8c8cf0d9 MC |
448 | return ret; |
449 | ||
0be6cf0c | 450 | /* Code below to be removed when legacy support is dropped. */ |
8c8cf0d9 | 451 | legacy: |
0ad50b4d | 452 | OPENSSL_assert(mdsize <= EVP_MAX_MD_SIZE); |
0f113f3e | 453 | ret = ctx->digest->final(ctx, md); |
8c8cf0d9 | 454 | if (isize != NULL) |
0ad50b4d | 455 | *isize = mdsize; |
0f113f3e MC |
456 | if (ctx->digest->cleanup) { |
457 | ctx->digest->cleanup(ctx); | |
458 | EVP_MD_CTX_set_flags(ctx, EVP_MD_CTX_FLAG_CLEANED); | |
459 | } | |
3ce2fdab | 460 | OPENSSL_cleanse(ctx->md_data, ctx->digest->ctx_size); |
0f113f3e MC |
461 | return ret; |
462 | } | |
351d8998 | 463 | |
cd8d1456 AP |
464 | int EVP_DigestFinalXOF(EVP_MD_CTX *ctx, unsigned char *md, size_t size) |
465 | { | |
466 | int ret = 0; | |
d5e5e2ff SL |
467 | OSSL_PARAM params[2]; |
468 | size_t i = 0; | |
469 | ||
28c21fa0 P |
470 | if (ctx->digest == NULL) { |
471 | ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_NULL_ALGORITHM); | |
472 | return 0; | |
473 | } | |
474 | ||
475 | if (ctx->digest->prov == NULL) | |
d5e5e2ff | 476 | goto legacy; |
cd8d1456 | 477 | |
d5e5e2ff | 478 | if (ctx->digest->dfinal == NULL) { |
9311d0c4 | 479 | ERR_raise(ERR_LIB_EVP, EVP_R_FINAL_ERROR); |
d5e5e2ff SL |
480 | return 0; |
481 | } | |
482 | ||
4e7991b4 | 483 | params[i++] = OSSL_PARAM_construct_size_t(OSSL_DIGEST_PARAM_XOFLEN, &size); |
d5e5e2ff SL |
484 | params[i++] = OSSL_PARAM_construct_end(); |
485 | ||
486 | if (EVP_MD_CTX_set_params(ctx, params) > 0) | |
7c14d0c1 | 487 | ret = ctx->digest->dfinal(ctx->algctx, md, &size, size); |
39fde64a | 488 | |
d5e5e2ff SL |
489 | return ret; |
490 | ||
491 | legacy: | |
cd8d1456 AP |
492 | if (ctx->digest->flags & EVP_MD_FLAG_XOF |
493 | && size <= INT_MAX | |
494 | && ctx->digest->md_ctrl(ctx, EVP_MD_CTRL_XOF_LEN, (int)size, NULL)) { | |
495 | ret = ctx->digest->final(ctx, md); | |
cd8d1456 AP |
496 | if (ctx->digest->cleanup != NULL) { |
497 | ctx->digest->cleanup(ctx); | |
498 | EVP_MD_CTX_set_flags(ctx, EVP_MD_CTX_FLAG_CLEANED); | |
499 | } | |
500 | OPENSSL_cleanse(ctx->md_data, ctx->digest->ctx_size); | |
501 | } else { | |
9311d0c4 | 502 | ERR_raise(ERR_LIB_EVP, EVP_R_NOT_XOF_OR_INVALID_LENGTH); |
cd8d1456 AP |
503 | } |
504 | ||
505 | return ret; | |
506 | } | |
507 | ||
dbad1690 | 508 | int EVP_MD_CTX_copy(EVP_MD_CTX *out, const EVP_MD_CTX *in) |
0f113f3e | 509 | { |
959ed531 | 510 | EVP_MD_CTX_reset(out); |
0f113f3e MC |
511 | return EVP_MD_CTX_copy_ex(out, in); |
512 | } | |
20d2186c DSH |
513 | |
514 | int EVP_MD_CTX_copy_ex(EVP_MD_CTX *out, const EVP_MD_CTX *in) | |
0f113f3e MC |
515 | { |
516 | unsigned char *tmp_buf; | |
8c8cf0d9 | 517 | |
9ece8323 TM |
518 | if (in == NULL) { |
519 | ERR_raise(ERR_LIB_EVP, ERR_R_PASSED_NULL_PARAMETER); | |
0f113f3e MC |
520 | return 0; |
521 | } | |
8c8cf0d9 | 522 | |
9ece8323 TM |
523 | if (in->digest == NULL) { |
524 | /* copying uninitialized digest context */ | |
525 | EVP_MD_CTX_reset(out); | |
526 | if (out->fetched_digest != NULL) | |
527 | EVP_MD_free(out->fetched_digest); | |
528 | *out = *in; | |
ad2fcee1 | 529 | goto clone_pkey; |
9ece8323 TM |
530 | } |
531 | ||
557d6737 MC |
532 | if (in->digest->prov == NULL |
533 | || (in->flags & EVP_MD_CTX_FLAG_NO_INIT) != 0) | |
8c8cf0d9 MC |
534 | goto legacy; |
535 | ||
536 | if (in->digest->dupctx == NULL) { | |
9311d0c4 | 537 | ERR_raise(ERR_LIB_EVP, EVP_R_NOT_ABLE_TO_COPY_CTX); |
8c8cf0d9 MC |
538 | return 0; |
539 | } | |
540 | ||
541 | EVP_MD_CTX_reset(out); | |
542 | if (out->fetched_digest != NULL) | |
3fd70262 | 543 | EVP_MD_free(out->fetched_digest); |
8c8cf0d9 MC |
544 | *out = *in; |
545 | /* NULL out pointers in case of error */ | |
546 | out->pctx = NULL; | |
7c14d0c1 | 547 | out->algctx = NULL; |
8c8cf0d9 MC |
548 | |
549 | if (in->fetched_digest != NULL) | |
70c35fd1 | 550 | EVP_MD_up_ref(in->fetched_digest); |
8c8cf0d9 | 551 | |
7c14d0c1 SL |
552 | if (in->algctx != NULL) { |
553 | out->algctx = in->digest->dupctx(in->algctx); | |
554 | if (out->algctx == NULL) { | |
9311d0c4 | 555 | ERR_raise(ERR_LIB_EVP, EVP_R_NOT_ABLE_TO_COPY_CTX); |
ada0670b MC |
556 | return 0; |
557 | } | |
8c8cf0d9 MC |
558 | } |
559 | ||
ad2fcee1 | 560 | clone_pkey: |
8c8cf0d9 MC |
561 | /* copied EVP_MD_CTX should free the copied EVP_PKEY_CTX */ |
562 | EVP_MD_CTX_clear_flags(out, EVP_MD_CTX_FLAG_KEEP_PKEY_CTX); | |
f844f9eb | 563 | #ifndef FIPS_MODULE |
8c8cf0d9 MC |
564 | if (in->pctx != NULL) { |
565 | out->pctx = EVP_PKEY_CTX_dup(in->pctx); | |
566 | if (out->pctx == NULL) { | |
9311d0c4 | 567 | ERR_raise(ERR_LIB_EVP, EVP_R_NOT_ABLE_TO_COPY_CTX); |
8c8cf0d9 MC |
568 | EVP_MD_CTX_reset(out); |
569 | return 0; | |
570 | } | |
571 | } | |
319e518a | 572 | #endif |
8c8cf0d9 MC |
573 | |
574 | return 1; | |
575 | ||
0be6cf0c | 576 | /* Code below to be removed when legacy support is dropped. */ |
8c8cf0d9 | 577 | legacy: |
f844f9eb | 578 | #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE) |
0f113f3e MC |
579 | /* Make sure it's safe to copy a digest context using an ENGINE */ |
580 | if (in->engine && !ENGINE_init(in->engine)) { | |
9311d0c4 | 581 | ERR_raise(ERR_LIB_EVP, ERR_R_ENGINE_LIB); |
0f113f3e MC |
582 | return 0; |
583 | } | |
0b13e9f0 | 584 | #endif |
26188931 | 585 | |
0f113f3e MC |
586 | if (out->digest == in->digest) { |
587 | tmp_buf = out->md_data; | |
588 | EVP_MD_CTX_set_flags(out, EVP_MD_CTX_FLAG_REUSE); | |
589 | } else | |
590 | tmp_buf = NULL; | |
959ed531 | 591 | EVP_MD_CTX_reset(out); |
b4faea50 | 592 | memcpy(out, in, sizeof(*out)); |
0f113f3e | 593 | |
4803717f PY |
594 | /* copied EVP_MD_CTX should free the copied EVP_PKEY_CTX */ |
595 | EVP_MD_CTX_clear_flags(out, EVP_MD_CTX_FLAG_KEEP_PKEY_CTX); | |
596 | ||
6aa0ba4b RL |
597 | /* Null these variables, since they are getting fixed up |
598 | * properly below. Anything else may cause a memleak and/or | |
599 | * double free if any of the memory allocations below fail | |
600 | */ | |
601 | out->md_data = NULL; | |
602 | out->pctx = NULL; | |
603 | ||
0f113f3e MC |
604 | if (in->md_data && out->digest->ctx_size) { |
605 | if (tmp_buf) | |
606 | out->md_data = tmp_buf; | |
607 | else { | |
608 | out->md_data = OPENSSL_malloc(out->digest->ctx_size); | |
90945fa3 | 609 | if (out->md_data == NULL) { |
9311d0c4 | 610 | ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE); |
0f113f3e MC |
611 | return 0; |
612 | } | |
613 | } | |
614 | memcpy(out->md_data, in->md_data, out->digest->ctx_size); | |
615 | } | |
26188931 | 616 | |
0f113f3e | 617 | out->update = in->update; |
d4575825 | 618 | |
f844f9eb | 619 | #ifndef FIPS_MODULE |
0f113f3e MC |
620 | if (in->pctx) { |
621 | out->pctx = EVP_PKEY_CTX_dup(in->pctx); | |
622 | if (!out->pctx) { | |
959ed531 | 623 | EVP_MD_CTX_reset(out); |
0f113f3e MC |
624 | return 0; |
625 | } | |
626 | } | |
319e518a | 627 | #endif |
18327cd0 | 628 | |
0f113f3e MC |
629 | if (out->digest->copy) |
630 | return out->digest->copy(out, in); | |
3a828611 | 631 | |
0f113f3e MC |
632 | return 1; |
633 | } | |
88ce56f8 | 634 | |
9e0aad9f | 635 | int EVP_Digest(const void *data, size_t count, |
0f113f3e MC |
636 | unsigned char *md, unsigned int *size, const EVP_MD *type, |
637 | ENGINE *impl) | |
638 | { | |
bfb0641f | 639 | EVP_MD_CTX *ctx = EVP_MD_CTX_new(); |
0f113f3e | 640 | int ret; |
dbad1690 | 641 | |
74cabf3f RL |
642 | if (ctx == NULL) |
643 | return 0; | |
644 | EVP_MD_CTX_set_flags(ctx, EVP_MD_CTX_FLAG_ONESHOT); | |
645 | ret = EVP_DigestInit_ex(ctx, type, impl) | |
646 | && EVP_DigestUpdate(ctx, data, count) | |
647 | && EVP_DigestFinal_ex(ctx, md, size); | |
bfb0641f | 648 | EVP_MD_CTX_free(ctx); |
dbad1690 | 649 | |
0f113f3e MC |
650 | return ret; |
651 | } | |
dbad1690 | 652 | |
4d49b685 | 653 | int EVP_Q_digest(OSSL_LIB_CTX *libctx, const char *name, const char *propq, |
006de767 RL |
654 | const void *data, size_t datalen, |
655 | unsigned char *md, size_t *mdlen) | |
4d49b685 DDO |
656 | { |
657 | EVP_MD *digest = EVP_MD_fetch(libctx, name, propq); | |
006de767 | 658 | unsigned int temp = 0; |
4d49b685 DDO |
659 | int ret = 0; |
660 | ||
661 | if (digest != NULL) { | |
006de767 | 662 | ret = EVP_Digest(data, datalen, md, &temp, digest, NULL); |
4d49b685 DDO |
663 | EVP_MD_free(digest); |
664 | } | |
006de767 RL |
665 | if (mdlen != NULL) |
666 | *mdlen = temp; | |
4d49b685 DDO |
667 | return ret; |
668 | } | |
669 | ||
ae3ff60e RL |
670 | int EVP_MD_get_params(const EVP_MD *digest, OSSL_PARAM params[]) |
671 | { | |
672 | if (digest != NULL && digest->get_params != NULL) | |
673 | return digest->get_params(params); | |
674 | return 0; | |
675 | } | |
676 | ||
677 | const OSSL_PARAM *EVP_MD_gettable_params(const EVP_MD *digest) | |
678 | { | |
679 | if (digest != NULL && digest->gettable_params != NULL) | |
18ec26ba | 680 | return digest->gettable_params( |
ed576acd | 681 | ossl_provider_ctx(EVP_MD_get0_provider(digest))); |
ae3ff60e RL |
682 | return NULL; |
683 | } | |
684 | ||
d5e5e2ff SL |
685 | int EVP_MD_CTX_set_params(EVP_MD_CTX *ctx, const OSSL_PARAM params[]) |
686 | { | |
5f5c3b4f MC |
687 | EVP_PKEY_CTX *pctx = ctx->pctx; |
688 | ||
ada0670b | 689 | /* If we have a pctx then we should try that first */ |
5f5c3b4f MC |
690 | if (pctx != NULL |
691 | && (pctx->operation == EVP_PKEY_OP_VERIFYCTX | |
692 | || pctx->operation == EVP_PKEY_OP_SIGNCTX) | |
7c14d0c1 | 693 | && pctx->op.sig.algctx != NULL |
5f5c3b4f | 694 | && pctx->op.sig.signature->set_ctx_md_params != NULL) |
7c14d0c1 | 695 | return pctx->op.sig.signature->set_ctx_md_params(pctx->op.sig.algctx, |
5f5c3b4f | 696 | params); |
ada0670b MC |
697 | |
698 | if (ctx->digest != NULL && ctx->digest->set_ctx_params != NULL) | |
7c14d0c1 | 699 | return ctx->digest->set_ctx_params(ctx->algctx, params); |
ada0670b | 700 | |
d5e5e2ff SL |
701 | return 0; |
702 | } | |
703 | ||
e6879a31 | 704 | const OSSL_PARAM *EVP_MD_settable_ctx_params(const EVP_MD *md) |
ae3ff60e | 705 | { |
7c14d0c1 | 706 | void *provctx; |
6de3a06d P |
707 | |
708 | if (md != NULL && md->settable_ctx_params != NULL) { | |
ed576acd | 709 | provctx = ossl_provider_ctx(EVP_MD_get0_provider(md)); |
7c14d0c1 | 710 | return md->settable_ctx_params(NULL, provctx); |
6de3a06d | 711 | } |
e6879a31 MC |
712 | return NULL; |
713 | } | |
714 | ||
715 | const OSSL_PARAM *EVP_MD_CTX_settable_params(EVP_MD_CTX *ctx) | |
716 | { | |
5f5c3b4f | 717 | EVP_PKEY_CTX *pctx; |
6de3a06d | 718 | void *alg; |
5f5c3b4f | 719 | |
18ec26ba P |
720 | if (ctx == NULL) |
721 | return NULL; | |
722 | ||
ada0670b | 723 | /* If we have a pctx then we should try that first */ |
5f5c3b4f MC |
724 | pctx = ctx->pctx; |
725 | if (pctx != NULL | |
726 | && (pctx->operation == EVP_PKEY_OP_VERIFYCTX | |
727 | || pctx->operation == EVP_PKEY_OP_SIGNCTX) | |
7c14d0c1 | 728 | && pctx->op.sig.algctx != NULL |
5f5c3b4f MC |
729 | && pctx->op.sig.signature->settable_ctx_md_params != NULL) |
730 | return pctx->op.sig.signature->settable_ctx_md_params( | |
7c14d0c1 | 731 | pctx->op.sig.algctx); |
5f5c3b4f | 732 | |
6de3a06d | 733 | if (ctx->digest != NULL && ctx->digest->settable_ctx_params != NULL) { |
ed576acd | 734 | alg = ossl_provider_ctx(EVP_MD_get0_provider(ctx->digest)); |
7c14d0c1 | 735 | return ctx->digest->settable_ctx_params(ctx->algctx, alg); |
6de3a06d | 736 | } |
ada0670b | 737 | |
ae3ff60e RL |
738 | return NULL; |
739 | } | |
740 | ||
4e7991b4 | 741 | int EVP_MD_CTX_get_params(EVP_MD_CTX *ctx, OSSL_PARAM params[]) |
d5e5e2ff | 742 | { |
5f5c3b4f MC |
743 | EVP_PKEY_CTX *pctx = ctx->pctx; |
744 | ||
ada0670b | 745 | /* If we have a pctx then we should try that first */ |
5f5c3b4f MC |
746 | if (pctx != NULL |
747 | && (pctx->operation == EVP_PKEY_OP_VERIFYCTX | |
748 | || pctx->operation == EVP_PKEY_OP_SIGNCTX) | |
7c14d0c1 | 749 | && pctx->op.sig.algctx != NULL |
5f5c3b4f | 750 | && pctx->op.sig.signature->get_ctx_md_params != NULL) |
7c14d0c1 | 751 | return pctx->op.sig.signature->get_ctx_md_params(pctx->op.sig.algctx, |
5f5c3b4f MC |
752 | params); |
753 | ||
ada0670b | 754 | if (ctx->digest != NULL && ctx->digest->get_params != NULL) |
7c14d0c1 | 755 | return ctx->digest->get_ctx_params(ctx->algctx, params); |
ada0670b | 756 | |
d5e5e2ff SL |
757 | return 0; |
758 | } | |
759 | ||
e6879a31 | 760 | const OSSL_PARAM *EVP_MD_gettable_ctx_params(const EVP_MD *md) |
ae3ff60e | 761 | { |
7c14d0c1 | 762 | void *provctx; |
6de3a06d P |
763 | |
764 | if (md != NULL && md->gettable_ctx_params != NULL) { | |
ed576acd | 765 | provctx = ossl_provider_ctx(EVP_MD_get0_provider(md)); |
7c14d0c1 | 766 | return md->gettable_ctx_params(NULL, provctx); |
6de3a06d | 767 | } |
e6879a31 MC |
768 | return NULL; |
769 | } | |
770 | ||
771 | const OSSL_PARAM *EVP_MD_CTX_gettable_params(EVP_MD_CTX *ctx) | |
772 | { | |
5f5c3b4f | 773 | EVP_PKEY_CTX *pctx; |
7c14d0c1 | 774 | void *provctx; |
5f5c3b4f | 775 | |
825ccf51 SL |
776 | if (ctx == NULL) |
777 | return NULL; | |
778 | ||
ada0670b | 779 | /* If we have a pctx then we should try that first */ |
5f5c3b4f MC |
780 | pctx = ctx->pctx; |
781 | if (pctx != NULL | |
782 | && (pctx->operation == EVP_PKEY_OP_VERIFYCTX | |
783 | || pctx->operation == EVP_PKEY_OP_SIGNCTX) | |
7c14d0c1 | 784 | && pctx->op.sig.algctx != NULL |
5f5c3b4f MC |
785 | && pctx->op.sig.signature->gettable_ctx_md_params != NULL) |
786 | return pctx->op.sig.signature->gettable_ctx_md_params( | |
7c14d0c1 | 787 | pctx->op.sig.algctx); |
5f5c3b4f | 788 | |
6de3a06d | 789 | if (ctx->digest != NULL && ctx->digest->gettable_ctx_params != NULL) { |
ed576acd | 790 | provctx = ossl_provider_ctx(EVP_MD_get0_provider(ctx->digest)); |
7c14d0c1 | 791 | return ctx->digest->gettable_ctx_params(ctx->algctx, provctx); |
6de3a06d | 792 | } |
ae3ff60e RL |
793 | return NULL; |
794 | } | |
795 | ||
396d5fd0 DSH |
796 | int EVP_MD_CTX_ctrl(EVP_MD_CTX *ctx, int cmd, int p1, void *p2) |
797 | { | |
6a3b7c68 RL |
798 | int ret = EVP_CTRL_RET_UNSUPPORTED; |
799 | int set_params = 1; | |
800 | size_t sz; | |
801 | OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END }; | |
802 | ||
a2b62316 MC |
803 | if (ctx == NULL) { |
804 | ERR_raise(ERR_LIB_EVP, ERR_R_PASSED_NULL_PARAMETER); | |
6a3b7c68 RL |
805 | return 0; |
806 | } | |
807 | ||
a2b62316 | 808 | if (ctx->digest != NULL && ctx->digest->prov == NULL) |
6a3b7c68 RL |
809 | goto legacy; |
810 | ||
811 | switch (cmd) { | |
812 | case EVP_MD_CTRL_XOF_LEN: | |
813 | sz = (size_t)p1; | |
814 | params[0] = OSSL_PARAM_construct_size_t(OSSL_DIGEST_PARAM_XOFLEN, &sz); | |
815 | break; | |
816 | case EVP_MD_CTRL_MICALG: | |
817 | set_params = 0; | |
818 | params[0] = OSSL_PARAM_construct_utf8_string(OSSL_DIGEST_PARAM_MICALG, | |
4e7991b4 | 819 | p2, p1 ? p1 : 9999); |
6a3b7c68 | 820 | break; |
c3885102 MC |
821 | case EVP_CTRL_SSL3_MASTER_SECRET: |
822 | params[0] = OSSL_PARAM_construct_octet_string(OSSL_DIGEST_PARAM_SSL3_MS, | |
823 | p2, p1); | |
824 | break; | |
6a3b7c68 | 825 | default: |
6a36f209 | 826 | goto conclude; |
396d5fd0 | 827 | } |
6a3b7c68 RL |
828 | |
829 | if (set_params) | |
5f5c3b4f | 830 | ret = EVP_MD_CTX_set_params(ctx, params); |
6a3b7c68 | 831 | else |
5f5c3b4f | 832 | ret = EVP_MD_CTX_get_params(ctx, params); |
552be00d | 833 | goto conclude; |
6a3b7c68 RL |
834 | |
835 | ||
0be6cf0c | 836 | /* Code below to be removed when legacy support is dropped. */ |
6a3b7c68 RL |
837 | legacy: |
838 | if (ctx->digest->md_ctrl == NULL) { | |
839 | ERR_raise(ERR_LIB_EVP, EVP_R_CTRL_NOT_IMPLEMENTED); | |
840 | return 0; | |
841 | } | |
842 | ||
843 | ret = ctx->digest->md_ctrl(ctx, cmd, p1, p2); | |
552be00d | 844 | conclude: |
6a3b7c68 RL |
845 | if (ret <= 0) |
846 | return 0; | |
847 | return ret; | |
396d5fd0 | 848 | } |
3653d0c2 | 849 | |
3fd70262 RL |
850 | EVP_MD *evp_md_new(void) |
851 | { | |
852 | EVP_MD *md = OPENSSL_zalloc(sizeof(*md)); | |
853 | ||
854 | if (md != NULL) { | |
855 | md->lock = CRYPTO_THREAD_lock_new(); | |
856 | if (md->lock == NULL) { | |
857 | OPENSSL_free(md); | |
858 | return NULL; | |
859 | } | |
860 | md->refcnt = 1; | |
861 | } | |
862 | return md; | |
863 | } | |
864 | ||
32040838 RL |
865 | /* |
866 | * FIPS module note: since internal fetches will be entirely | |
867 | * provider based, we know that none of its code depends on legacy | |
868 | * NIDs or any functionality that use them. | |
869 | */ | |
f844f9eb | 870 | #ifndef FIPS_MODULE |
32040838 RL |
871 | static void set_legacy_nid(const char *name, void *vlegacy_nid) |
872 | { | |
873 | int nid; | |
874 | int *legacy_nid = vlegacy_nid; | |
6a835fcf RL |
875 | /* |
876 | * We use lowest level function to get the associated method, because | |
877 | * higher level functions such as EVP_get_digestbyname() have changed | |
878 | * to look at providers too. | |
879 | */ | |
880 | const void *legacy_method = OBJ_NAME_get(name, OBJ_NAME_TYPE_MD_METH); | |
32040838 RL |
881 | |
882 | if (*legacy_nid == -1) /* We found a clash already */ | |
883 | return; | |
6a835fcf RL |
884 | |
885 | if (legacy_method == NULL) | |
32040838 | 886 | return; |
6a835fcf | 887 | nid = EVP_MD_nid(legacy_method); |
32040838 RL |
888 | if (*legacy_nid != NID_undef && *legacy_nid != nid) { |
889 | *legacy_nid = -1; | |
890 | return; | |
891 | } | |
892 | *legacy_nid = nid; | |
893 | } | |
894 | #endif | |
895 | ||
38f79314 MC |
896 | static int evp_md_cache_constants(EVP_MD *md) |
897 | { | |
af53092c | 898 | int ok, xof = 0, algid_absent = 0; |
38f79314 MC |
899 | size_t blksz = 0; |
900 | size_t mdsize = 0; | |
af53092c | 901 | OSSL_PARAM params[5]; |
38f79314 MC |
902 | |
903 | params[0] = OSSL_PARAM_construct_size_t(OSSL_DIGEST_PARAM_BLOCK_SIZE, &blksz); | |
904 | params[1] = OSSL_PARAM_construct_size_t(OSSL_DIGEST_PARAM_SIZE, &mdsize); | |
af53092c SL |
905 | params[2] = OSSL_PARAM_construct_int(OSSL_DIGEST_PARAM_XOF, &xof); |
906 | params[3] = OSSL_PARAM_construct_int(OSSL_DIGEST_PARAM_ALGID_ABSENT, | |
907 | &algid_absent); | |
908 | params[4] = OSSL_PARAM_construct_end(); | |
0df56c30 | 909 | ok = evp_do_md_getparams(md, params) > 0; |
38f79314 MC |
910 | if (mdsize > INT_MAX || blksz > INT_MAX) |
911 | ok = 0; | |
912 | if (ok) { | |
913 | md->block_size = (int)blksz; | |
914 | md->md_size = (int)mdsize; | |
af53092c SL |
915 | if (xof) |
916 | md->flags |= EVP_MD_FLAG_XOF; | |
917 | if (algid_absent) | |
918 | md->flags |= EVP_MD_FLAG_DIGALGID_ABSENT; | |
38f79314 MC |
919 | } |
920 | return ok; | |
921 | } | |
922 | ||
309a78aa RL |
923 | static void *evp_md_from_algorithm(int name_id, |
924 | const OSSL_ALGORITHM *algodef, | |
925 | OSSL_PROVIDER *prov) | |
3653d0c2 | 926 | { |
309a78aa | 927 | const OSSL_DISPATCH *fns = algodef->implementation; |
3653d0c2 | 928 | EVP_MD *md = NULL; |
8c8cf0d9 | 929 | int fncnt = 0; |
3653d0c2 | 930 | |
0211740f | 931 | /* EVP_MD_fetch() will set the legacy NID if available */ |
f7c16d48 | 932 | if ((md = evp_md_new()) == NULL) { |
9311d0c4 | 933 | ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE); |
3653d0c2 | 934 | return NULL; |
6b9e3724 | 935 | } |
3653d0c2 | 936 | |
f844f9eb | 937 | #ifndef FIPS_MODULE |
32040838 | 938 | md->type = NID_undef; |
d84f5515 MC |
939 | if (!evp_names_do_all(prov, name_id, set_legacy_nid, &md->type) |
940 | || md->type == -1) { | |
32040838 RL |
941 | ERR_raise(ERR_LIB_EVP, ERR_R_INTERNAL_ERROR); |
942 | EVP_MD_free(md); | |
943 | return NULL; | |
f7c16d48 | 944 | } |
ed71e917 MC |
945 | #endif |
946 | ||
32040838 | 947 | md->name_id = name_id; |
6c9bc258 TM |
948 | if ((md->type_name = ossl_algorithm_get1_first_name(algodef)) == NULL) { |
949 | EVP_MD_free(md); | |
950 | return NULL; | |
951 | } | |
309a78aa | 952 | md->description = algodef->algorithm_description; |
32040838 | 953 | |
3653d0c2 | 954 | for (; fns->function_id != 0; fns++) { |
3653d0c2 MC |
955 | switch (fns->function_id) { |
956 | case OSSL_FUNC_DIGEST_NEWCTX: | |
d5e5e2ff | 957 | if (md->newctx == NULL) { |
363b1e5d | 958 | md->newctx = OSSL_FUNC_digest_newctx(fns); |
d5e5e2ff SL |
959 | fncnt++; |
960 | } | |
3653d0c2 MC |
961 | break; |
962 | case OSSL_FUNC_DIGEST_INIT: | |
d5e5e2ff | 963 | if (md->dinit == NULL) { |
363b1e5d | 964 | md->dinit = OSSL_FUNC_digest_init(fns); |
d5e5e2ff SL |
965 | fncnt++; |
966 | } | |
3653d0c2 | 967 | break; |
df05f2ce | 968 | case OSSL_FUNC_DIGEST_UPDATE: |
d5e5e2ff | 969 | if (md->dupdate == NULL) { |
363b1e5d | 970 | md->dupdate = OSSL_FUNC_digest_update(fns); |
d5e5e2ff SL |
971 | fncnt++; |
972 | } | |
3653d0c2 MC |
973 | break; |
974 | case OSSL_FUNC_DIGEST_FINAL: | |
d5e5e2ff | 975 | if (md->dfinal == NULL) { |
363b1e5d | 976 | md->dfinal = OSSL_FUNC_digest_final(fns); |
d5e5e2ff SL |
977 | fncnt++; |
978 | } | |
3653d0c2 MC |
979 | break; |
980 | case OSSL_FUNC_DIGEST_DIGEST: | |
d5e5e2ff | 981 | if (md->digest == NULL) |
363b1e5d | 982 | md->digest = OSSL_FUNC_digest_digest(fns); |
3653d0c2 MC |
983 | /* We don't increment fnct for this as it is stand alone */ |
984 | break; | |
3653d0c2 | 985 | case OSSL_FUNC_DIGEST_FREECTX: |
d5e5e2ff | 986 | if (md->freectx == NULL) { |
363b1e5d | 987 | md->freectx = OSSL_FUNC_digest_freectx(fns); |
d5e5e2ff SL |
988 | fncnt++; |
989 | } | |
3653d0c2 | 990 | break; |
8c8cf0d9 | 991 | case OSSL_FUNC_DIGEST_DUPCTX: |
d5e5e2ff | 992 | if (md->dupctx == NULL) |
363b1e5d | 993 | md->dupctx = OSSL_FUNC_digest_dupctx(fns); |
8c8cf0d9 | 994 | break; |
d5e5e2ff SL |
995 | case OSSL_FUNC_DIGEST_GET_PARAMS: |
996 | if (md->get_params == NULL) | |
363b1e5d | 997 | md->get_params = OSSL_FUNC_digest_get_params(fns); |
7556b9df | 998 | break; |
92d9d0ae RL |
999 | case OSSL_FUNC_DIGEST_SET_CTX_PARAMS: |
1000 | if (md->set_ctx_params == NULL) | |
363b1e5d | 1001 | md->set_ctx_params = OSSL_FUNC_digest_set_ctx_params(fns); |
6a3b7c68 | 1002 | break; |
92d9d0ae RL |
1003 | case OSSL_FUNC_DIGEST_GET_CTX_PARAMS: |
1004 | if (md->get_ctx_params == NULL) | |
363b1e5d | 1005 | md->get_ctx_params = OSSL_FUNC_digest_get_ctx_params(fns); |
6a3b7c68 | 1006 | break; |
ae3ff60e RL |
1007 | case OSSL_FUNC_DIGEST_GETTABLE_PARAMS: |
1008 | if (md->gettable_params == NULL) | |
363b1e5d | 1009 | md->gettable_params = OSSL_FUNC_digest_gettable_params(fns); |
ae3ff60e RL |
1010 | break; |
1011 | case OSSL_FUNC_DIGEST_SETTABLE_CTX_PARAMS: | |
1012 | if (md->settable_ctx_params == NULL) | |
1013 | md->settable_ctx_params = | |
363b1e5d | 1014 | OSSL_FUNC_digest_settable_ctx_params(fns); |
ae3ff60e RL |
1015 | break; |
1016 | case OSSL_FUNC_DIGEST_GETTABLE_CTX_PARAMS: | |
1017 | if (md->gettable_ctx_params == NULL) | |
1018 | md->gettable_ctx_params = | |
363b1e5d | 1019 | OSSL_FUNC_digest_gettable_ctx_params(fns); |
ae3ff60e | 1020 | break; |
3653d0c2 | 1021 | } |
8c8cf0d9 MC |
1022 | } |
1023 | if ((fncnt != 0 && fncnt != 5) | |
6a3b7c68 | 1024 | || (fncnt == 0 && md->digest == NULL)) { |
8c8cf0d9 MC |
1025 | /* |
1026 | * In order to be a consistent set of functions we either need the | |
1027 | * whole set of init/update/final etc functions or none of them. | |
1028 | * The "digest" function can standalone. We at least need one way to | |
1029 | * generate digests. | |
1030 | */ | |
3fd70262 | 1031 | EVP_MD_free(md); |
6a3b7c68 | 1032 | ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_PROVIDER_FUNCTIONS); |
8c8cf0d9 | 1033 | return NULL; |
3653d0c2 MC |
1034 | } |
1035 | md->prov = prov; | |
1036 | if (prov != NULL) | |
7c95390e | 1037 | ossl_provider_up_ref(prov); |
3653d0c2 | 1038 | |
38f79314 MC |
1039 | if (!evp_md_cache_constants(md)) { |
1040 | EVP_MD_free(md); | |
1041 | ERR_raise(ERR_LIB_EVP, EVP_R_CACHE_CONSTANTS_FAILED); | |
1042 | md = NULL; | |
1043 | } | |
1044 | ||
3653d0c2 MC |
1045 | return md; |
1046 | } | |
1047 | ||
70c35fd1 | 1048 | static int evp_md_up_ref(void *md) |
3653d0c2 | 1049 | { |
70c35fd1 | 1050 | return EVP_MD_up_ref(md); |
3653d0c2 MC |
1051 | } |
1052 | ||
1053 | static void evp_md_free(void *md) | |
1054 | { | |
3fd70262 | 1055 | EVP_MD_free(md); |
3653d0c2 MC |
1056 | } |
1057 | ||
b4250010 | 1058 | EVP_MD *EVP_MD_fetch(OSSL_LIB_CTX *ctx, const char *algorithm, |
3653d0c2 MC |
1059 | const char *properties) |
1060 | { | |
0211740f RL |
1061 | EVP_MD *md = |
1062 | evp_generic_fetch(ctx, OSSL_OP_DIGEST, algorithm, properties, | |
309a78aa | 1063 | evp_md_from_algorithm, evp_md_up_ref, evp_md_free); |
0211740f | 1064 | |
0211740f | 1065 | return md; |
3653d0c2 | 1066 | } |
c540f00f | 1067 | |
3fd70262 RL |
1068 | int EVP_MD_up_ref(EVP_MD *md) |
1069 | { | |
1070 | int ref = 0; | |
1071 | ||
f6c95e46 RS |
1072 | if (md->origin == EVP_ORIG_DYNAMIC) |
1073 | CRYPTO_UP_REF(&md->refcnt, &ref, md->lock); | |
3fd70262 RL |
1074 | return 1; |
1075 | } | |
1076 | ||
1077 | void EVP_MD_free(EVP_MD *md) | |
1078 | { | |
1079 | int i; | |
1080 | ||
f6c95e46 | 1081 | if (md == NULL || md->origin != EVP_ORIG_DYNAMIC) |
3fd70262 RL |
1082 | return; |
1083 | ||
1084 | CRYPTO_DOWN_REF(&md->refcnt, &i, md->lock); | |
1085 | if (i > 0) | |
1086 | return; | |
f6c95e46 | 1087 | evp_md_free_int(md); |
3fd70262 RL |
1088 | } |
1089 | ||
b4250010 | 1090 | void EVP_MD_do_all_provided(OSSL_LIB_CTX *libctx, |
251e610c RL |
1091 | void (*fn)(EVP_MD *mac, void *arg), |
1092 | void *arg) | |
c540f00f RL |
1093 | { |
1094 | evp_generic_do_all(libctx, OSSL_OP_DIGEST, | |
1095 | (void (*)(void *, void *))fn, arg, | |
cd770738 | 1096 | evp_md_from_algorithm, evp_md_up_ref, evp_md_free); |
c540f00f | 1097 | } |