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Commit | Line | Data |
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62867571 | 1 | /* |
d5e5e2ff | 2 | * Copyright 1995-2019 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 RE |
9 | |
10 | #include <stdio.h> | |
ec577822 BM |
11 | #include <openssl/objects.h> |
12 | #include <openssl/evp.h> | |
3c27208f | 13 | #include <openssl/engine.h> |
d5e5e2ff SL |
14 | #include <openssl/params.h> |
15 | #include <openssl/core_names.h> | |
16 | #include "internal/cryptlib.h" | |
25f2138b | 17 | #include "crypto/evp.h" |
3653d0c2 | 18 | #include "internal/provider.h" |
706457b7 | 19 | #include "evp_local.h" |
d02b48c6 | 20 | |
74cabf3f | 21 | /* This call frees resources associated with the context */ |
959ed531 | 22 | int EVP_MD_CTX_reset(EVP_MD_CTX *ctx) |
0f113f3e | 23 | { |
74cabf3f RL |
24 | if (ctx == NULL) |
25 | return 1; | |
26 | ||
aa64cf24 MC |
27 | #ifndef FIPS_MODE |
28 | /* TODO(3.0): Temporarily no support for EVP_DigestSign* in FIPS module */ | |
29 | /* | |
30 | * pctx should be freed by the user of EVP_MD_CTX | |
31 | * if EVP_MD_CTX_FLAG_KEEP_PKEY_CTX is set | |
32 | */ | |
33 | if (!EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_KEEP_PKEY_CTX)) | |
34 | EVP_PKEY_CTX_free(ctx->pctx); | |
35 | #endif | |
36 | ||
14bec2c4 MC |
37 | EVP_MD_free(ctx->fetched_digest); |
38 | ctx->fetched_digest = NULL; | |
39 | ctx->reqdigest = NULL; | |
8c8cf0d9 MC |
40 | |
41 | if (ctx->provctx != NULL) { | |
42 | if (ctx->digest->freectx != NULL) | |
43 | ctx->digest->freectx(ctx->provctx); | |
44 | ctx->provctx = NULL; | |
45 | EVP_MD_CTX_set_flags(ctx, EVP_MD_CTX_FLAG_CLEANED); | |
46 | } | |
47 | ||
8c8cf0d9 | 48 | /* TODO(3.0): Remove legacy code below */ |
8c8cf0d9 | 49 | |
74cabf3f RL |
50 | /* |
51 | * Don't assume ctx->md_data was cleaned in EVP_Digest_Final, because | |
52 | * sometimes only copies of the context are ever finalised. | |
53 | */ | |
54 | if (ctx->digest && ctx->digest->cleanup | |
55 | && !EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_CLEANED)) | |
56 | ctx->digest->cleanup(ctx); | |
57 | if (ctx->digest && ctx->digest->ctx_size && ctx->md_data | |
58 | && !EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_REUSE)) { | |
59 | OPENSSL_clear_free(ctx->md_data, ctx->digest->ctx_size); | |
60 | } | |
319e518a | 61 | |
aa64cf24 | 62 | #if !defined(FIPS_MODE) && !defined(OPENSSL_NO_ENGINE) |
7c96dbcd | 63 | ENGINE_finish(ctx->engine); |
74cabf3f | 64 | #endif |
14bec2c4 MC |
65 | |
66 | /* TODO(3.0): End of legacy code */ | |
67 | ||
3ce2fdab | 68 | OPENSSL_cleanse(ctx, sizeof(*ctx)); |
74cabf3f RL |
69 | |
70 | return 1; | |
0f113f3e | 71 | } |
dbad1690 | 72 | |
959ed531 | 73 | EVP_MD_CTX *EVP_MD_CTX_new(void) |
0f113f3e | 74 | { |
74cabf3f RL |
75 | return OPENSSL_zalloc(sizeof(EVP_MD_CTX)); |
76 | } | |
dbad1690 | 77 | |
959ed531 | 78 | void EVP_MD_CTX_free(EVP_MD_CTX *ctx) |
74cabf3f | 79 | { |
8c8cf0d9 MC |
80 | if (ctx == NULL) |
81 | return; | |
82 | ||
8c8cf0d9 MC |
83 | EVP_MD_CTX_reset(ctx); |
84 | ||
8c8cf0d9 MC |
85 | OPENSSL_free(ctx); |
86 | return; | |
0f113f3e | 87 | } |
dbad1690 | 88 | |
2dc769a1 | 89 | int EVP_DigestInit(EVP_MD_CTX *ctx, const EVP_MD *type) |
0f113f3e | 90 | { |
959ed531 | 91 | EVP_MD_CTX_reset(ctx); |
0f113f3e MC |
92 | return EVP_DigestInit_ex(ctx, type, NULL); |
93 | } | |
0fea7ed4 | 94 | |
11a57c7b | 95 | int EVP_DigestInit_ex(EVP_MD_CTX *ctx, const EVP_MD *type, ENGINE *impl) |
0f113f3e | 96 | { |
319e518a | 97 | #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODE) |
8c8cf0d9 | 98 | ENGINE *tmpimpl = NULL; |
319e518a | 99 | #endif |
8c8cf0d9 | 100 | |
0f113f3e | 101 | EVP_MD_CTX_clear_flags(ctx, EVP_MD_CTX_FLAG_CLEANED); |
8c8cf0d9 | 102 | |
15de965f MC |
103 | if (ctx->provctx != NULL) { |
104 | if (!ossl_assert(ctx->digest != NULL)) { | |
105 | EVPerr(EVP_F_EVP_DIGESTINIT_EX, EVP_R_INITIALIZATION_ERROR); | |
106 | return 0; | |
107 | } | |
108 | if (ctx->digest->freectx != NULL) | |
109 | ctx->digest->freectx(ctx->provctx); | |
110 | ctx->provctx = NULL; | |
111 | } | |
112 | ||
b7c913c8 MC |
113 | if (type != NULL) |
114 | ctx->reqdigest = type; | |
115 | ||
8c8cf0d9 | 116 | /* TODO(3.0): Legacy work around code below. Remove this */ |
319e518a | 117 | #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODE) |
0f113f3e MC |
118 | /* |
119 | * Whether it's nice or not, "Inits" can be used on "Final"'d contexts so | |
120 | * this context may already have an ENGINE! Try to avoid releasing the | |
121 | * previous handle, re-querying for an ENGINE, and having a | |
0d4fb843 | 122 | * reinitialisation, when it may all be unnecessary. |
0f113f3e | 123 | */ |
a93e0e78 MRA |
124 | if (ctx->engine && ctx->digest && |
125 | (type == NULL || (type->type == ctx->digest->type))) | |
0f113f3e | 126 | goto skip_to_init; |
8c8cf0d9 | 127 | |
98475995 RL |
128 | if (type != NULL) { |
129 | /* | |
130 | * Ensure an ENGINE left lying around from last time is cleared (the | |
131 | * previous check attempted to avoid this if the same ENGINE and | |
132 | * EVP_MD could be used). | |
133 | */ | |
134 | ENGINE_finish(ctx->engine); | |
135 | ctx->engine = NULL; | |
136 | } | |
137 | ||
8c8cf0d9 MC |
138 | if (type != NULL && impl == NULL) |
139 | tmpimpl = ENGINE_get_digest_engine(type->type); | |
140 | #endif | |
141 | ||
142 | /* | |
19cfe784 MC |
143 | * If there are engines involved or EVP_MD_CTX_FLAG_NO_INIT is set then we |
144 | * should use legacy handling for now. | |
8c8cf0d9 MC |
145 | */ |
146 | if (ctx->engine != NULL | |
147 | || impl != NULL | |
319e518a | 148 | #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODE) |
8c8cf0d9 | 149 | || tmpimpl != NULL |
319e518a | 150 | #endif |
8c8cf0d9 MC |
151 | || (ctx->flags & EVP_MD_CTX_FLAG_NO_INIT) != 0) { |
152 | if (ctx->digest == ctx->fetched_digest) | |
153 | ctx->digest = NULL; | |
3fd70262 | 154 | EVP_MD_free(ctx->fetched_digest); |
8c8cf0d9 MC |
155 | ctx->fetched_digest = NULL; |
156 | goto legacy; | |
157 | } | |
158 | ||
8c8cf0d9 MC |
159 | if (ctx->digest != NULL && ctx->digest->ctx_size > 0) { |
160 | OPENSSL_clear_free(ctx->md_data, ctx->digest->ctx_size); | |
161 | ctx->md_data = NULL; | |
162 | } | |
163 | ||
164 | /* TODO(3.0): Start of non-legacy code below */ | |
165 | ||
166 | if (type->prov == NULL) { | |
319e518a | 167 | #ifdef FIPS_MODE |
79c44b4e | 168 | /* We only do explicit fetches inside the FIPS module */ |
319e518a MC |
169 | EVPerr(EVP_F_EVP_DIGESTINIT_EX, EVP_R_INITIALIZATION_ERROR); |
170 | return 0; | |
171 | #else | |
172 | EVP_MD *provmd = EVP_MD_fetch(NULL, OBJ_nid2sn(type->type), ""); | |
173 | ||
8c8cf0d9 MC |
174 | if (provmd == NULL) { |
175 | EVPerr(EVP_F_EVP_DIGESTINIT_EX, EVP_R_INITIALIZATION_ERROR); | |
176 | return 0; | |
177 | } | |
178 | type = provmd; | |
3fd70262 | 179 | EVP_MD_free(ctx->fetched_digest); |
8c8cf0d9 | 180 | ctx->fetched_digest = provmd; |
319e518a | 181 | #endif |
8c8cf0d9 MC |
182 | } |
183 | ||
d5e5e2ff SL |
184 | if (ctx->provctx != NULL && ctx->digest != NULL && ctx->digest != type) { |
185 | if (ctx->digest->freectx != NULL) | |
186 | ctx->digest->freectx(ctx->provctx); | |
187 | ctx->provctx = NULL; | |
188 | } | |
8c8cf0d9 MC |
189 | ctx->digest = type; |
190 | if (ctx->provctx == NULL) { | |
a39eb840 | 191 | ctx->provctx = ctx->digest->newctx(ossl_provider_ctx(type->prov)); |
8c8cf0d9 MC |
192 | if (ctx->provctx == NULL) { |
193 | EVPerr(EVP_F_EVP_DIGESTINIT_EX, EVP_R_INITIALIZATION_ERROR); | |
194 | return 0; | |
195 | } | |
196 | } | |
197 | ||
198 | if (ctx->digest->dinit == NULL) { | |
199 | EVPerr(EVP_F_EVP_DIGESTINIT_EX, EVP_R_INITIALIZATION_ERROR); | |
200 | return 0; | |
201 | } | |
202 | ||
203 | return ctx->digest->dinit(ctx->provctx); | |
204 | ||
205 | /* TODO(3.0): Remove legacy code below */ | |
206 | legacy: | |
207 | ||
319e518a | 208 | #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODE) |
0f113f3e | 209 | if (type) { |
7c96dbcd | 210 | if (impl != NULL) { |
0f113f3e MC |
211 | if (!ENGINE_init(impl)) { |
212 | EVPerr(EVP_F_EVP_DIGESTINIT_EX, EVP_R_INITIALIZATION_ERROR); | |
213 | return 0; | |
214 | } | |
7c96dbcd | 215 | } else { |
0f113f3e | 216 | /* Ask if an ENGINE is reserved for this job */ |
8c8cf0d9 | 217 | impl = tmpimpl; |
7c96dbcd RS |
218 | } |
219 | if (impl != NULL) { | |
0f113f3e MC |
220 | /* There's an ENGINE for this job ... (apparently) */ |
221 | const EVP_MD *d = ENGINE_get_digest(impl, type->type); | |
7c96dbcd RS |
222 | |
223 | if (d == NULL) { | |
0f113f3e MC |
224 | EVPerr(EVP_F_EVP_DIGESTINIT_EX, EVP_R_INITIALIZATION_ERROR); |
225 | ENGINE_finish(impl); | |
226 | return 0; | |
227 | } | |
228 | /* We'll use the ENGINE's private digest definition */ | |
229 | type = d; | |
230 | /* | |
231 | * Store the ENGINE functional reference so we know 'type' came | |
232 | * from an ENGINE and we need to release it when done. | |
233 | */ | |
234 | ctx->engine = impl; | |
235 | } else | |
236 | ctx->engine = NULL; | |
a0108702 MC |
237 | } else { |
238 | if (!ctx->digest) { | |
239 | EVPerr(EVP_F_EVP_DIGESTINIT_EX, EVP_R_NO_DIGEST_SET); | |
240 | return 0; | |
241 | } | |
242 | type = ctx->digest; | |
0f113f3e | 243 | } |
90e8a310 | 244 | #endif |
0f113f3e | 245 | if (ctx->digest != type) { |
ffe9150b | 246 | if (ctx->digest && ctx->digest->ctx_size) { |
a93e0e78 | 247 | OPENSSL_clear_free(ctx->md_data, ctx->digest->ctx_size); |
ffe9150b MC |
248 | ctx->md_data = NULL; |
249 | } | |
0f113f3e MC |
250 | ctx->digest = type; |
251 | if (!(ctx->flags & EVP_MD_CTX_FLAG_NO_INIT) && type->ctx_size) { | |
252 | ctx->update = type->update; | |
84c15091 | 253 | ctx->md_data = OPENSSL_zalloc(type->ctx_size); |
0f113f3e MC |
254 | if (ctx->md_data == NULL) { |
255 | EVPerr(EVP_F_EVP_DIGESTINIT_EX, ERR_R_MALLOC_FAILURE); | |
256 | return 0; | |
257 | } | |
258 | } | |
259 | } | |
319e518a | 260 | #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODE) |
0f113f3e | 261 | skip_to_init: |
0b13e9f0 | 262 | #endif |
319e518a | 263 | #ifndef FIPS_MODE |
dfcb5d29 MC |
264 | /* |
265 | * TODO(3.0): Temporarily no support for EVP_DigestSign* inside FIPS module | |
266 | * or when using providers. | |
267 | */ | |
864b89ce MC |
268 | if (ctx->pctx != NULL |
269 | && (!EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx->pctx) | |
270 | || ctx->pctx->op.sig.signature == NULL)) { | |
0f113f3e MC |
271 | int r; |
272 | r = EVP_PKEY_CTX_ctrl(ctx->pctx, -1, EVP_PKEY_OP_TYPE_SIG, | |
273 | EVP_PKEY_CTRL_DIGESTINIT, 0, ctx); | |
274 | if (r <= 0 && (r != -2)) | |
275 | return 0; | |
276 | } | |
319e518a | 277 | #endif |
0f113f3e MC |
278 | if (ctx->flags & EVP_MD_CTX_FLAG_NO_INIT) |
279 | return 1; | |
280 | return ctx->digest->init(ctx); | |
281 | } | |
d02b48c6 | 282 | |
f80921b6 | 283 | int EVP_DigestUpdate(EVP_MD_CTX *ctx, const void *data, size_t count) |
0f113f3e | 284 | { |
a8274ea3 MC |
285 | if (count == 0) |
286 | return 1; | |
287 | ||
72df8f88 MC |
288 | if (ctx->pctx != NULL |
289 | && EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx->pctx) | |
290 | && ctx->pctx->op.sig.sigprovctx != NULL) { | |
291 | /* | |
292 | * Prior to OpenSSL 3.0 EVP_DigestSignUpdate() and | |
293 | * EVP_DigestVerifyUpdate() were just macros for EVP_DigestUpdate(). | |
294 | * Some code calls EVP_DigestUpdate() directly even when initialised | |
295 | * with EVP_DigestSignInit_ex() or EVP_DigestVerifyInit_ex(), so we | |
296 | * detect that and redirect to the correct EVP_Digest*Update() function | |
297 | */ | |
298 | if (ctx->pctx->operation == EVP_PKEY_OP_SIGNCTX) | |
299 | return EVP_DigestSignUpdate(ctx, data, count); | |
300 | if (ctx->pctx->operation == EVP_PKEY_OP_VERIFYCTX) | |
301 | return EVP_DigestVerifyUpdate(ctx, data, count); | |
302 | EVPerr(EVP_F_EVP_DIGESTUPDATE, EVP_R_UPDATE_ERROR); | |
303 | return 0; | |
304 | } | |
305 | ||
8c8cf0d9 MC |
306 | if (ctx->digest == NULL || ctx->digest->prov == NULL) |
307 | goto legacy; | |
308 | ||
309 | if (ctx->digest->dupdate == NULL) { | |
310 | EVPerr(EVP_F_EVP_DIGESTUPDATE, EVP_R_UPDATE_ERROR); | |
311 | return 0; | |
312 | } | |
313 | return ctx->digest->dupdate(ctx->provctx, data, count); | |
314 | ||
315 | /* TODO(3.0): Remove legacy code below */ | |
316 | legacy: | |
0f113f3e MC |
317 | return ctx->update(ctx, data, count); |
318 | } | |
d02b48c6 | 319 | |
dbad1690 | 320 | /* The caller can assume that this removes any secret data from the context */ |
2dc769a1 | 321 | int EVP_DigestFinal(EVP_MD_CTX *ctx, unsigned char *md, unsigned int *size) |
0f113f3e MC |
322 | { |
323 | int ret; | |
324 | ret = EVP_DigestFinal_ex(ctx, md, size); | |
959ed531 | 325 | EVP_MD_CTX_reset(ctx); |
0f113f3e MC |
326 | return ret; |
327 | } | |
20d2186c DSH |
328 | |
329 | /* The caller can assume that this removes any secret data from the context */ | |
8c8cf0d9 | 330 | int EVP_DigestFinal_ex(EVP_MD_CTX *ctx, unsigned char *md, unsigned int *isize) |
0f113f3e MC |
331 | { |
332 | int ret; | |
8c8cf0d9 | 333 | size_t size = 0; |
0ad50b4d | 334 | size_t mdsize = EVP_MD_size(ctx->digest); |
8c8cf0d9 MC |
335 | |
336 | if (ctx->digest == NULL || ctx->digest->prov == NULL) | |
337 | goto legacy; | |
54a656ef | 338 | |
8c8cf0d9 MC |
339 | if (ctx->digest->dfinal == NULL) { |
340 | EVPerr(EVP_F_EVP_DIGESTFINAL_EX, EVP_R_FINAL_ERROR); | |
341 | return 0; | |
342 | } | |
343 | ||
0ad50b4d | 344 | ret = ctx->digest->dfinal(ctx->provctx, md, &size, mdsize); |
8c8cf0d9 MC |
345 | |
346 | if (isize != NULL) { | |
347 | if (size <= UINT_MAX) { | |
348 | *isize = (int)size; | |
349 | } else { | |
350 | EVPerr(EVP_F_EVP_DIGESTFINAL_EX, EVP_R_FINAL_ERROR); | |
351 | ret = 0; | |
352 | } | |
353 | } | |
354 | ||
8c8cf0d9 MC |
355 | return ret; |
356 | ||
357 | /* TODO(3.0): Remove legacy code below */ | |
358 | legacy: | |
0ad50b4d | 359 | OPENSSL_assert(mdsize <= EVP_MAX_MD_SIZE); |
0f113f3e | 360 | ret = ctx->digest->final(ctx, md); |
8c8cf0d9 | 361 | if (isize != NULL) |
0ad50b4d | 362 | *isize = mdsize; |
0f113f3e MC |
363 | if (ctx->digest->cleanup) { |
364 | ctx->digest->cleanup(ctx); | |
365 | EVP_MD_CTX_set_flags(ctx, EVP_MD_CTX_FLAG_CLEANED); | |
366 | } | |
3ce2fdab | 367 | OPENSSL_cleanse(ctx->md_data, ctx->digest->ctx_size); |
0f113f3e MC |
368 | return ret; |
369 | } | |
351d8998 | 370 | |
cd8d1456 AP |
371 | int EVP_DigestFinalXOF(EVP_MD_CTX *ctx, unsigned char *md, size_t size) |
372 | { | |
373 | int ret = 0; | |
d5e5e2ff SL |
374 | OSSL_PARAM params[2]; |
375 | size_t i = 0; | |
376 | ||
377 | if (ctx->digest == NULL || ctx->digest->prov == NULL) | |
378 | goto legacy; | |
cd8d1456 | 379 | |
d5e5e2ff SL |
380 | if (ctx->digest->dfinal == NULL) { |
381 | EVPerr(EVP_F_EVP_DIGESTFINALXOF, EVP_R_FINAL_ERROR); | |
382 | return 0; | |
383 | } | |
384 | ||
4e7991b4 | 385 | params[i++] = OSSL_PARAM_construct_size_t(OSSL_DIGEST_PARAM_XOFLEN, &size); |
d5e5e2ff SL |
386 | params[i++] = OSSL_PARAM_construct_end(); |
387 | ||
388 | if (EVP_MD_CTX_set_params(ctx, params) > 0) | |
389 | ret = ctx->digest->dfinal(ctx->provctx, md, &size, size); | |
390 | EVP_MD_CTX_reset(ctx); | |
391 | return ret; | |
392 | ||
393 | legacy: | |
cd8d1456 AP |
394 | if (ctx->digest->flags & EVP_MD_FLAG_XOF |
395 | && size <= INT_MAX | |
396 | && ctx->digest->md_ctrl(ctx, EVP_MD_CTRL_XOF_LEN, (int)size, NULL)) { | |
397 | ret = ctx->digest->final(ctx, md); | |
cd8d1456 AP |
398 | if (ctx->digest->cleanup != NULL) { |
399 | ctx->digest->cleanup(ctx); | |
400 | EVP_MD_CTX_set_flags(ctx, EVP_MD_CTX_FLAG_CLEANED); | |
401 | } | |
402 | OPENSSL_cleanse(ctx->md_data, ctx->digest->ctx_size); | |
403 | } else { | |
404 | EVPerr(EVP_F_EVP_DIGESTFINALXOF, EVP_R_NOT_XOF_OR_INVALID_LENGTH); | |
405 | } | |
406 | ||
407 | return ret; | |
408 | } | |
409 | ||
dbad1690 | 410 | int EVP_MD_CTX_copy(EVP_MD_CTX *out, const EVP_MD_CTX *in) |
0f113f3e | 411 | { |
959ed531 | 412 | EVP_MD_CTX_reset(out); |
0f113f3e MC |
413 | return EVP_MD_CTX_copy_ex(out, in); |
414 | } | |
20d2186c DSH |
415 | |
416 | int EVP_MD_CTX_copy_ex(EVP_MD_CTX *out, const EVP_MD_CTX *in) | |
0f113f3e MC |
417 | { |
418 | unsigned char *tmp_buf; | |
8c8cf0d9 MC |
419 | |
420 | if (in == NULL || in->digest == NULL) { | |
0f113f3e MC |
421 | EVPerr(EVP_F_EVP_MD_CTX_COPY_EX, EVP_R_INPUT_NOT_INITIALIZED); |
422 | return 0; | |
423 | } | |
8c8cf0d9 MC |
424 | |
425 | if (in->digest->prov == NULL) | |
426 | goto legacy; | |
427 | ||
428 | if (in->digest->dupctx == NULL) { | |
429 | EVPerr(EVP_F_EVP_MD_CTX_COPY_EX, EVP_R_NOT_ABLE_TO_COPY_CTX); | |
430 | return 0; | |
431 | } | |
432 | ||
433 | EVP_MD_CTX_reset(out); | |
434 | if (out->fetched_digest != NULL) | |
3fd70262 | 435 | EVP_MD_free(out->fetched_digest); |
8c8cf0d9 MC |
436 | *out = *in; |
437 | /* NULL out pointers in case of error */ | |
438 | out->pctx = NULL; | |
439 | out->provctx = NULL; | |
440 | ||
441 | if (in->fetched_digest != NULL) | |
70c35fd1 | 442 | EVP_MD_up_ref(in->fetched_digest); |
8c8cf0d9 MC |
443 | |
444 | out->provctx = in->digest->dupctx(in->provctx); | |
445 | if (out->provctx == NULL) { | |
446 | EVPerr(EVP_F_EVP_MD_CTX_COPY_EX, EVP_R_NOT_ABLE_TO_COPY_CTX); | |
447 | return 0; | |
448 | } | |
449 | ||
450 | /* copied EVP_MD_CTX should free the copied EVP_PKEY_CTX */ | |
451 | EVP_MD_CTX_clear_flags(out, EVP_MD_CTX_FLAG_KEEP_PKEY_CTX); | |
319e518a MC |
452 | #ifndef FIPS_MODE |
453 | /* TODO(3.0): Temporarily no support for EVP_DigestSign* in FIPS module */ | |
8c8cf0d9 MC |
454 | if (in->pctx != NULL) { |
455 | out->pctx = EVP_PKEY_CTX_dup(in->pctx); | |
456 | if (out->pctx == NULL) { | |
457 | EVPerr(EVP_F_EVP_MD_CTX_COPY_EX, EVP_R_NOT_ABLE_TO_COPY_CTX); | |
458 | EVP_MD_CTX_reset(out); | |
459 | return 0; | |
460 | } | |
461 | } | |
319e518a | 462 | #endif |
8c8cf0d9 MC |
463 | |
464 | return 1; | |
465 | ||
466 | /* TODO(3.0): Remove legacy code below */ | |
467 | legacy: | |
319e518a | 468 | #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODE) |
0f113f3e MC |
469 | /* Make sure it's safe to copy a digest context using an ENGINE */ |
470 | if (in->engine && !ENGINE_init(in->engine)) { | |
471 | EVPerr(EVP_F_EVP_MD_CTX_COPY_EX, ERR_R_ENGINE_LIB); | |
472 | return 0; | |
473 | } | |
0b13e9f0 | 474 | #endif |
26188931 | 475 | |
0f113f3e MC |
476 | if (out->digest == in->digest) { |
477 | tmp_buf = out->md_data; | |
478 | EVP_MD_CTX_set_flags(out, EVP_MD_CTX_FLAG_REUSE); | |
479 | } else | |
480 | tmp_buf = NULL; | |
959ed531 | 481 | EVP_MD_CTX_reset(out); |
b4faea50 | 482 | memcpy(out, in, sizeof(*out)); |
0f113f3e | 483 | |
4803717f PY |
484 | /* copied EVP_MD_CTX should free the copied EVP_PKEY_CTX */ |
485 | EVP_MD_CTX_clear_flags(out, EVP_MD_CTX_FLAG_KEEP_PKEY_CTX); | |
486 | ||
6aa0ba4b RL |
487 | /* Null these variables, since they are getting fixed up |
488 | * properly below. Anything else may cause a memleak and/or | |
489 | * double free if any of the memory allocations below fail | |
490 | */ | |
491 | out->md_data = NULL; | |
492 | out->pctx = NULL; | |
493 | ||
0f113f3e MC |
494 | if (in->md_data && out->digest->ctx_size) { |
495 | if (tmp_buf) | |
496 | out->md_data = tmp_buf; | |
497 | else { | |
498 | out->md_data = OPENSSL_malloc(out->digest->ctx_size); | |
90945fa3 | 499 | if (out->md_data == NULL) { |
0f113f3e MC |
500 | EVPerr(EVP_F_EVP_MD_CTX_COPY_EX, ERR_R_MALLOC_FAILURE); |
501 | return 0; | |
502 | } | |
503 | } | |
504 | memcpy(out->md_data, in->md_data, out->digest->ctx_size); | |
505 | } | |
26188931 | 506 | |
0f113f3e | 507 | out->update = in->update; |
d4575825 | 508 | |
319e518a MC |
509 | #ifndef FIPS_MODE |
510 | /* TODO(3.0): Temporarily no support for EVP_DigestSign* in FIPS module */ | |
0f113f3e MC |
511 | if (in->pctx) { |
512 | out->pctx = EVP_PKEY_CTX_dup(in->pctx); | |
513 | if (!out->pctx) { | |
959ed531 | 514 | EVP_MD_CTX_reset(out); |
0f113f3e MC |
515 | return 0; |
516 | } | |
517 | } | |
319e518a | 518 | #endif |
18327cd0 | 519 | |
0f113f3e MC |
520 | if (out->digest->copy) |
521 | return out->digest->copy(out, in); | |
3a828611 | 522 | |
0f113f3e MC |
523 | return 1; |
524 | } | |
88ce56f8 | 525 | |
9e0aad9f | 526 | int EVP_Digest(const void *data, size_t count, |
0f113f3e MC |
527 | unsigned char *md, unsigned int *size, const EVP_MD *type, |
528 | ENGINE *impl) | |
529 | { | |
bfb0641f | 530 | EVP_MD_CTX *ctx = EVP_MD_CTX_new(); |
0f113f3e | 531 | int ret; |
dbad1690 | 532 | |
74cabf3f RL |
533 | if (ctx == NULL) |
534 | return 0; | |
535 | EVP_MD_CTX_set_flags(ctx, EVP_MD_CTX_FLAG_ONESHOT); | |
536 | ret = EVP_DigestInit_ex(ctx, type, impl) | |
537 | && EVP_DigestUpdate(ctx, data, count) | |
538 | && EVP_DigestFinal_ex(ctx, md, size); | |
bfb0641f | 539 | EVP_MD_CTX_free(ctx); |
dbad1690 | 540 | |
0f113f3e MC |
541 | return ret; |
542 | } | |
dbad1690 | 543 | |
ae3ff60e RL |
544 | int EVP_MD_get_params(const EVP_MD *digest, OSSL_PARAM params[]) |
545 | { | |
546 | if (digest != NULL && digest->get_params != NULL) | |
547 | return digest->get_params(params); | |
548 | return 0; | |
549 | } | |
550 | ||
551 | const OSSL_PARAM *EVP_MD_gettable_params(const EVP_MD *digest) | |
552 | { | |
553 | if (digest != NULL && digest->gettable_params != NULL) | |
554 | return digest->gettable_params(); | |
555 | return NULL; | |
556 | } | |
557 | ||
d5e5e2ff SL |
558 | int EVP_MD_CTX_set_params(EVP_MD_CTX *ctx, const OSSL_PARAM params[]) |
559 | { | |
5f5c3b4f MC |
560 | EVP_PKEY_CTX *pctx = ctx->pctx; |
561 | ||
92d9d0ae RL |
562 | if (ctx->digest != NULL && ctx->digest->set_ctx_params != NULL) |
563 | return ctx->digest->set_ctx_params(ctx->provctx, params); | |
5f5c3b4f MC |
564 | |
565 | if (pctx != NULL | |
566 | && (pctx->operation == EVP_PKEY_OP_VERIFYCTX | |
567 | || pctx->operation == EVP_PKEY_OP_SIGNCTX) | |
568 | && pctx->op.sig.sigprovctx != NULL | |
569 | && pctx->op.sig.signature->set_ctx_md_params != NULL) | |
570 | return pctx->op.sig.signature->set_ctx_md_params(pctx->op.sig.sigprovctx, | |
571 | params); | |
d5e5e2ff SL |
572 | return 0; |
573 | } | |
574 | ||
e6879a31 | 575 | const OSSL_PARAM *EVP_MD_settable_ctx_params(const EVP_MD *md) |
ae3ff60e | 576 | { |
e6879a31 MC |
577 | if (md != NULL && md->settable_ctx_params != NULL) |
578 | return md->settable_ctx_params(); | |
579 | return NULL; | |
580 | } | |
581 | ||
582 | const OSSL_PARAM *EVP_MD_CTX_settable_params(EVP_MD_CTX *ctx) | |
583 | { | |
5f5c3b4f MC |
584 | EVP_PKEY_CTX *pctx; |
585 | ||
e6879a31 MC |
586 | if (ctx != NULL |
587 | && ctx->digest != NULL | |
588 | && ctx->digest->settable_ctx_params != NULL) | |
589 | return ctx->digest->settable_ctx_params(); | |
590 | ||
5f5c3b4f MC |
591 | pctx = ctx->pctx; |
592 | if (pctx != NULL | |
593 | && (pctx->operation == EVP_PKEY_OP_VERIFYCTX | |
594 | || pctx->operation == EVP_PKEY_OP_SIGNCTX) | |
595 | && pctx->op.sig.sigprovctx != NULL | |
596 | && pctx->op.sig.signature->settable_ctx_md_params != NULL) | |
597 | return pctx->op.sig.signature->settable_ctx_md_params( | |
598 | pctx->op.sig.sigprovctx); | |
599 | ||
ae3ff60e RL |
600 | return NULL; |
601 | } | |
602 | ||
4e7991b4 | 603 | int EVP_MD_CTX_get_params(EVP_MD_CTX *ctx, OSSL_PARAM params[]) |
d5e5e2ff | 604 | { |
5f5c3b4f MC |
605 | EVP_PKEY_CTX *pctx = ctx->pctx; |
606 | ||
d5e5e2ff | 607 | if (ctx->digest != NULL && ctx->digest->get_params != NULL) |
92d9d0ae | 608 | return ctx->digest->get_ctx_params(ctx->provctx, params); |
5f5c3b4f MC |
609 | |
610 | if (pctx != NULL | |
611 | && (pctx->operation == EVP_PKEY_OP_VERIFYCTX | |
612 | || pctx->operation == EVP_PKEY_OP_SIGNCTX) | |
613 | && pctx->op.sig.sigprovctx != NULL | |
614 | && pctx->op.sig.signature->get_ctx_md_params != NULL) | |
615 | return pctx->op.sig.signature->get_ctx_md_params(pctx->op.sig.sigprovctx, | |
616 | params); | |
617 | ||
d5e5e2ff SL |
618 | return 0; |
619 | } | |
620 | ||
e6879a31 | 621 | const OSSL_PARAM *EVP_MD_gettable_ctx_params(const EVP_MD *md) |
ae3ff60e | 622 | { |
e6879a31 MC |
623 | if (md != NULL && md->gettable_ctx_params != NULL) |
624 | return md->gettable_ctx_params(); | |
625 | return NULL; | |
626 | } | |
627 | ||
628 | const OSSL_PARAM *EVP_MD_CTX_gettable_params(EVP_MD_CTX *ctx) | |
629 | { | |
5f5c3b4f MC |
630 | EVP_PKEY_CTX *pctx; |
631 | ||
e6879a31 MC |
632 | if (ctx != NULL |
633 | && ctx->digest != NULL | |
634 | && ctx->digest->gettable_ctx_params != NULL) | |
635 | return ctx->digest->gettable_ctx_params(); | |
636 | ||
5f5c3b4f MC |
637 | pctx = ctx->pctx; |
638 | if (pctx != NULL | |
639 | && (pctx->operation == EVP_PKEY_OP_VERIFYCTX | |
640 | || pctx->operation == EVP_PKEY_OP_SIGNCTX) | |
641 | && pctx->op.sig.sigprovctx != NULL | |
642 | && pctx->op.sig.signature->gettable_ctx_md_params != NULL) | |
643 | return pctx->op.sig.signature->gettable_ctx_md_params( | |
644 | pctx->op.sig.sigprovctx); | |
645 | ||
ae3ff60e RL |
646 | return NULL; |
647 | } | |
648 | ||
83b4a243 | 649 | /* TODO(3.0): Remove legacy code below - only used by engines & DigestSign */ |
396d5fd0 DSH |
650 | int EVP_MD_CTX_ctrl(EVP_MD_CTX *ctx, int cmd, int p1, void *p2) |
651 | { | |
6a3b7c68 RL |
652 | int ret = EVP_CTRL_RET_UNSUPPORTED; |
653 | int set_params = 1; | |
654 | size_t sz; | |
655 | OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END }; | |
656 | ||
657 | if (ctx == NULL || ctx->digest == NULL) { | |
658 | ERR_raise(ERR_LIB_EVP, EVP_R_MESSAGE_DIGEST_IS_NULL); | |
659 | return 0; | |
660 | } | |
661 | ||
5f5c3b4f MC |
662 | if (ctx->digest->prov == NULL |
663 | && (ctx->pctx == NULL | |
664 | || (ctx->pctx->operation != EVP_PKEY_OP_VERIFYCTX | |
665 | && ctx->pctx->operation != EVP_PKEY_OP_SIGNCTX))) | |
6a3b7c68 RL |
666 | goto legacy; |
667 | ||
668 | switch (cmd) { | |
669 | case EVP_MD_CTRL_XOF_LEN: | |
670 | sz = (size_t)p1; | |
671 | params[0] = OSSL_PARAM_construct_size_t(OSSL_DIGEST_PARAM_XOFLEN, &sz); | |
672 | break; | |
673 | case EVP_MD_CTRL_MICALG: | |
674 | set_params = 0; | |
675 | params[0] = OSSL_PARAM_construct_utf8_string(OSSL_DIGEST_PARAM_MICALG, | |
4e7991b4 | 676 | p2, p1 ? p1 : 9999); |
6a3b7c68 | 677 | break; |
c3885102 MC |
678 | case EVP_CTRL_SSL3_MASTER_SECRET: |
679 | params[0] = OSSL_PARAM_construct_octet_string(OSSL_DIGEST_PARAM_SSL3_MS, | |
680 | p2, p1); | |
681 | break; | |
6a3b7c68 | 682 | default: |
6a36f209 | 683 | goto conclude; |
396d5fd0 | 684 | } |
6a3b7c68 RL |
685 | |
686 | if (set_params) | |
5f5c3b4f | 687 | ret = EVP_MD_CTX_set_params(ctx, params); |
6a3b7c68 | 688 | else |
5f5c3b4f | 689 | ret = EVP_MD_CTX_get_params(ctx, params); |
552be00d | 690 | goto conclude; |
6a3b7c68 RL |
691 | |
692 | ||
693 | /* TODO(3.0): Remove legacy code below */ | |
694 | legacy: | |
695 | if (ctx->digest->md_ctrl == NULL) { | |
696 | ERR_raise(ERR_LIB_EVP, EVP_R_CTRL_NOT_IMPLEMENTED); | |
697 | return 0; | |
698 | } | |
699 | ||
700 | ret = ctx->digest->md_ctrl(ctx, cmd, p1, p2); | |
552be00d | 701 | conclude: |
6a3b7c68 RL |
702 | if (ret <= 0) |
703 | return 0; | |
704 | return ret; | |
396d5fd0 | 705 | } |
3653d0c2 | 706 | |
3fd70262 RL |
707 | EVP_MD *evp_md_new(void) |
708 | { | |
709 | EVP_MD *md = OPENSSL_zalloc(sizeof(*md)); | |
710 | ||
711 | if (md != NULL) { | |
712 | md->lock = CRYPTO_THREAD_lock_new(); | |
713 | if (md->lock == NULL) { | |
714 | OPENSSL_free(md); | |
715 | return NULL; | |
716 | } | |
717 | md->refcnt = 1; | |
718 | } | |
719 | return md; | |
720 | } | |
721 | ||
32040838 RL |
722 | /* |
723 | * FIPS module note: since internal fetches will be entirely | |
724 | * provider based, we know that none of its code depends on legacy | |
725 | * NIDs or any functionality that use them. | |
726 | */ | |
727 | #ifndef FIPS_MODE | |
728 | /* TODO(3.x) get rid of the need for legacy NIDs */ | |
729 | static void set_legacy_nid(const char *name, void *vlegacy_nid) | |
730 | { | |
731 | int nid; | |
732 | int *legacy_nid = vlegacy_nid; | |
6a835fcf RL |
733 | /* |
734 | * We use lowest level function to get the associated method, because | |
735 | * higher level functions such as EVP_get_digestbyname() have changed | |
736 | * to look at providers too. | |
737 | */ | |
738 | const void *legacy_method = OBJ_NAME_get(name, OBJ_NAME_TYPE_MD_METH); | |
32040838 RL |
739 | |
740 | if (*legacy_nid == -1) /* We found a clash already */ | |
741 | return; | |
6a835fcf RL |
742 | |
743 | if (legacy_method == NULL) | |
32040838 | 744 | return; |
6a835fcf | 745 | nid = EVP_MD_nid(legacy_method); |
32040838 RL |
746 | if (*legacy_nid != NID_undef && *legacy_nid != nid) { |
747 | *legacy_nid = -1; | |
748 | return; | |
749 | } | |
750 | *legacy_nid = nid; | |
751 | } | |
752 | #endif | |
753 | ||
f7c16d48 RL |
754 | static void *evp_md_from_dispatch(int name_id, |
755 | const OSSL_DISPATCH *fns, | |
0ddf74bf | 756 | OSSL_PROVIDER *prov) |
3653d0c2 MC |
757 | { |
758 | EVP_MD *md = NULL; | |
8c8cf0d9 | 759 | int fncnt = 0; |
3653d0c2 | 760 | |
0211740f | 761 | /* EVP_MD_fetch() will set the legacy NID if available */ |
f7c16d48 | 762 | if ((md = evp_md_new()) == NULL) { |
6b9e3724 | 763 | EVPerr(0, ERR_R_MALLOC_FAILURE); |
3653d0c2 | 764 | return NULL; |
6b9e3724 | 765 | } |
3653d0c2 | 766 | |
ed71e917 | 767 | #ifndef FIPS_MODE |
32040838 RL |
768 | /* TODO(3.x) get rid of the need for legacy NIDs */ |
769 | md->type = NID_undef; | |
f651c727 | 770 | evp_names_do_all(prov, name_id, set_legacy_nid, &md->type); |
32040838 RL |
771 | if (md->type == -1) { |
772 | ERR_raise(ERR_LIB_EVP, ERR_R_INTERNAL_ERROR); | |
773 | EVP_MD_free(md); | |
774 | return NULL; | |
f7c16d48 | 775 | } |
ed71e917 MC |
776 | #endif |
777 | ||
32040838 RL |
778 | md->name_id = name_id; |
779 | ||
3653d0c2 | 780 | for (; fns->function_id != 0; fns++) { |
3653d0c2 MC |
781 | switch (fns->function_id) { |
782 | case OSSL_FUNC_DIGEST_NEWCTX: | |
d5e5e2ff SL |
783 | if (md->newctx == NULL) { |
784 | md->newctx = OSSL_get_OP_digest_newctx(fns); | |
785 | fncnt++; | |
786 | } | |
3653d0c2 MC |
787 | break; |
788 | case OSSL_FUNC_DIGEST_INIT: | |
d5e5e2ff SL |
789 | if (md->dinit == NULL) { |
790 | md->dinit = OSSL_get_OP_digest_init(fns); | |
791 | fncnt++; | |
792 | } | |
3653d0c2 | 793 | break; |
df05f2ce | 794 | case OSSL_FUNC_DIGEST_UPDATE: |
d5e5e2ff SL |
795 | if (md->dupdate == NULL) { |
796 | md->dupdate = OSSL_get_OP_digest_update(fns); | |
797 | fncnt++; | |
798 | } | |
3653d0c2 MC |
799 | break; |
800 | case OSSL_FUNC_DIGEST_FINAL: | |
d5e5e2ff SL |
801 | if (md->dfinal == NULL) { |
802 | md->dfinal = OSSL_get_OP_digest_final(fns); | |
803 | fncnt++; | |
804 | } | |
3653d0c2 MC |
805 | break; |
806 | case OSSL_FUNC_DIGEST_DIGEST: | |
d5e5e2ff SL |
807 | if (md->digest == NULL) |
808 | md->digest = OSSL_get_OP_digest_digest(fns); | |
3653d0c2 MC |
809 | /* We don't increment fnct for this as it is stand alone */ |
810 | break; | |
3653d0c2 | 811 | case OSSL_FUNC_DIGEST_FREECTX: |
d5e5e2ff SL |
812 | if (md->freectx == NULL) { |
813 | md->freectx = OSSL_get_OP_digest_freectx(fns); | |
814 | fncnt++; | |
815 | } | |
3653d0c2 | 816 | break; |
8c8cf0d9 | 817 | case OSSL_FUNC_DIGEST_DUPCTX: |
d5e5e2ff SL |
818 | if (md->dupctx == NULL) |
819 | md->dupctx = OSSL_get_OP_digest_dupctx(fns); | |
8c8cf0d9 | 820 | break; |
d5e5e2ff SL |
821 | case OSSL_FUNC_DIGEST_GET_PARAMS: |
822 | if (md->get_params == NULL) | |
823 | md->get_params = OSSL_get_OP_digest_get_params(fns); | |
7556b9df | 824 | break; |
92d9d0ae RL |
825 | case OSSL_FUNC_DIGEST_SET_CTX_PARAMS: |
826 | if (md->set_ctx_params == NULL) | |
827 | md->set_ctx_params = OSSL_get_OP_digest_set_ctx_params(fns); | |
6a3b7c68 | 828 | break; |
92d9d0ae RL |
829 | case OSSL_FUNC_DIGEST_GET_CTX_PARAMS: |
830 | if (md->get_ctx_params == NULL) | |
831 | md->get_ctx_params = OSSL_get_OP_digest_get_ctx_params(fns); | |
6a3b7c68 | 832 | break; |
ae3ff60e RL |
833 | case OSSL_FUNC_DIGEST_GETTABLE_PARAMS: |
834 | if (md->gettable_params == NULL) | |
835 | md->gettable_params = OSSL_get_OP_digest_gettable_params(fns); | |
836 | break; | |
837 | case OSSL_FUNC_DIGEST_SETTABLE_CTX_PARAMS: | |
838 | if (md->settable_ctx_params == NULL) | |
839 | md->settable_ctx_params = | |
840 | OSSL_get_OP_digest_settable_ctx_params(fns); | |
841 | break; | |
842 | case OSSL_FUNC_DIGEST_GETTABLE_CTX_PARAMS: | |
843 | if (md->gettable_ctx_params == NULL) | |
844 | md->gettable_ctx_params = | |
845 | OSSL_get_OP_digest_gettable_ctx_params(fns); | |
846 | break; | |
3653d0c2 | 847 | } |
8c8cf0d9 MC |
848 | } |
849 | if ((fncnt != 0 && fncnt != 5) | |
6a3b7c68 | 850 | || (fncnt == 0 && md->digest == NULL)) { |
8c8cf0d9 MC |
851 | /* |
852 | * In order to be a consistent set of functions we either need the | |
853 | * whole set of init/update/final etc functions or none of them. | |
854 | * The "digest" function can standalone. We at least need one way to | |
855 | * generate digests. | |
856 | */ | |
3fd70262 | 857 | EVP_MD_free(md); |
6a3b7c68 | 858 | ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_PROVIDER_FUNCTIONS); |
8c8cf0d9 | 859 | return NULL; |
3653d0c2 MC |
860 | } |
861 | md->prov = prov; | |
862 | if (prov != NULL) | |
7c95390e | 863 | ossl_provider_up_ref(prov); |
3653d0c2 MC |
864 | |
865 | return md; | |
866 | } | |
867 | ||
70c35fd1 | 868 | static int evp_md_up_ref(void *md) |
3653d0c2 | 869 | { |
70c35fd1 | 870 | return EVP_MD_up_ref(md); |
3653d0c2 MC |
871 | } |
872 | ||
873 | static void evp_md_free(void *md) | |
874 | { | |
3fd70262 | 875 | EVP_MD_free(md); |
3653d0c2 MC |
876 | } |
877 | ||
878 | EVP_MD *EVP_MD_fetch(OPENSSL_CTX *ctx, const char *algorithm, | |
879 | const char *properties) | |
880 | { | |
0211740f RL |
881 | EVP_MD *md = |
882 | evp_generic_fetch(ctx, OSSL_OP_DIGEST, algorithm, properties, | |
0ddf74bf | 883 | evp_md_from_dispatch, evp_md_up_ref, evp_md_free); |
0211740f | 884 | |
0211740f | 885 | return md; |
3653d0c2 | 886 | } |
c540f00f | 887 | |
3fd70262 RL |
888 | int EVP_MD_up_ref(EVP_MD *md) |
889 | { | |
890 | int ref = 0; | |
891 | ||
892 | CRYPTO_UP_REF(&md->refcnt, &ref, md->lock); | |
893 | return 1; | |
894 | } | |
895 | ||
896 | void EVP_MD_free(EVP_MD *md) | |
897 | { | |
898 | int i; | |
899 | ||
900 | if (md == NULL) | |
901 | return; | |
902 | ||
903 | CRYPTO_DOWN_REF(&md->refcnt, &i, md->lock); | |
904 | if (i > 0) | |
905 | return; | |
906 | ossl_provider_free(md->prov); | |
3fd70262 RL |
907 | CRYPTO_THREAD_lock_free(md->lock); |
908 | OPENSSL_free(md); | |
909 | } | |
910 | ||
251e610c RL |
911 | void EVP_MD_do_all_provided(OPENSSL_CTX *libctx, |
912 | void (*fn)(EVP_MD *mac, void *arg), | |
913 | void *arg) | |
c540f00f RL |
914 | { |
915 | evp_generic_do_all(libctx, OSSL_OP_DIGEST, | |
916 | (void (*)(void *, void *))fn, arg, | |
0ddf74bf | 917 | evp_md_from_dispatch, evp_md_free); |
c540f00f | 918 | } |