2 * Copyright 1995-2019 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
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
11 #include <openssl/objects.h>
12 #include <openssl/evp.h>
13 #include <openssl/engine.h>
14 #include <openssl/params.h>
15 #include <openssl/core_names.h>
16 #include "internal/cryptlib.h"
17 #include "crypto/evp.h"
18 #include "internal/provider.h"
19 #include "evp_local.h"
21 /* This call frees resources associated with the context */
22 int EVP_MD_CTX_reset(EVP_MD_CTX *ctx)
28 /* TODO(3.0): Temporarily no support for EVP_DigestSign* in FIPS module */
30 * pctx should be freed by the user of EVP_MD_CTX
31 * if EVP_MD_CTX_FLAG_KEEP_PKEY_CTX is set
33 if (!EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_KEEP_PKEY_CTX))
34 EVP_PKEY_CTX_free(ctx->pctx);
37 if (ctx->digest == NULL || ctx->digest->prov == NULL)
40 if (ctx->provctx != NULL) {
41 if (ctx->digest->freectx != NULL)
42 ctx->digest->freectx(ctx->provctx);
44 EVP_MD_CTX_set_flags(ctx, EVP_MD_CTX_FLAG_CLEANED);
47 if (ctx->pctx != NULL)
52 /* TODO(3.0): Remove legacy code below */
56 * Don't assume ctx->md_data was cleaned in EVP_Digest_Final, because
57 * sometimes only copies of the context are ever finalised.
59 if (ctx->digest && ctx->digest->cleanup
60 && !EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_CLEANED))
61 ctx->digest->cleanup(ctx);
62 if (ctx->digest && ctx->digest->ctx_size && ctx->md_data
63 && !EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_REUSE)) {
64 OPENSSL_clear_free(ctx->md_data, ctx->digest->ctx_size);
67 #if !defined(FIPS_MODE) && !defined(OPENSSL_NO_ENGINE)
68 ENGINE_finish(ctx->engine);
70 OPENSSL_cleanse(ctx, sizeof(*ctx));
75 EVP_MD_CTX *EVP_MD_CTX_new(void)
77 return OPENSSL_zalloc(sizeof(EVP_MD_CTX));
80 void EVP_MD_CTX_free(EVP_MD_CTX *ctx)
85 EVP_MD_CTX_reset(ctx);
87 EVP_MD_free(ctx->fetched_digest);
88 ctx->fetched_digest = NULL;
90 ctx->reqdigest = NULL;
96 int EVP_DigestInit(EVP_MD_CTX *ctx, const EVP_MD *type)
98 EVP_MD_CTX_reset(ctx);
99 return EVP_DigestInit_ex(ctx, type, NULL);
102 int EVP_DigestInit_ex(EVP_MD_CTX *ctx, const EVP_MD *type, ENGINE *impl)
104 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODE)
105 ENGINE *tmpimpl = NULL;
108 EVP_MD_CTX_clear_flags(ctx, EVP_MD_CTX_FLAG_CLEANED);
111 ctx->reqdigest = type;
113 /* TODO(3.0): Legacy work around code below. Remove this */
114 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODE)
116 * Whether it's nice or not, "Inits" can be used on "Final"'d contexts so
117 * this context may already have an ENGINE! Try to avoid releasing the
118 * previous handle, re-querying for an ENGINE, and having a
119 * reinitialisation, when it may all be unnecessary.
121 if (ctx->engine && ctx->digest &&
122 (type == NULL || (type->type == ctx->digest->type)))
127 * Ensure an ENGINE left lying around from last time is cleared (the
128 * previous check attempted to avoid this if the same ENGINE and
129 * EVP_MD could be used).
131 ENGINE_finish(ctx->engine);
135 if (type != NULL && impl == NULL)
136 tmpimpl = ENGINE_get_digest_engine(type->type);
140 * If there are engines involved or if we're being used as part of
141 * EVP_DigestSignInit then we should use legacy handling for now.
143 if (ctx->engine != NULL
145 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODE)
149 || (ctx->flags & EVP_MD_CTX_FLAG_NO_INIT) != 0) {
150 if (ctx->digest == ctx->fetched_digest)
152 EVP_MD_free(ctx->fetched_digest);
153 ctx->fetched_digest = NULL;
157 if (ctx->digest != NULL && ctx->digest->ctx_size > 0) {
158 OPENSSL_clear_free(ctx->md_data, ctx->digest->ctx_size);
162 /* TODO(3.0): Start of non-legacy code below */
164 if (type->prov == NULL) {
166 /* We only do explict fetches inside the FIPS module */
167 EVPerr(EVP_F_EVP_DIGESTINIT_EX, EVP_R_INITIALIZATION_ERROR);
170 EVP_MD *provmd = EVP_MD_fetch(NULL, OBJ_nid2sn(type->type), "");
172 if (provmd == NULL) {
173 EVPerr(EVP_F_EVP_DIGESTINIT_EX, EVP_R_INITIALIZATION_ERROR);
177 EVP_MD_free(ctx->fetched_digest);
178 ctx->fetched_digest = provmd;
182 if (ctx->provctx != NULL && ctx->digest != NULL && ctx->digest != type) {
183 if (ctx->digest->freectx != NULL)
184 ctx->digest->freectx(ctx->provctx);
188 if (ctx->provctx == NULL) {
189 ctx->provctx = ctx->digest->newctx(ossl_provider_ctx(type->prov));
190 if (ctx->provctx == NULL) {
191 EVPerr(EVP_F_EVP_DIGESTINIT_EX, EVP_R_INITIALIZATION_ERROR);
196 if (ctx->digest->dinit == NULL) {
197 EVPerr(EVP_F_EVP_DIGESTINIT_EX, EVP_R_INITIALIZATION_ERROR);
201 return ctx->digest->dinit(ctx->provctx);
203 /* TODO(3.0): Remove legacy code below */
206 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODE)
209 if (!ENGINE_init(impl)) {
210 EVPerr(EVP_F_EVP_DIGESTINIT_EX, EVP_R_INITIALIZATION_ERROR);
214 /* Ask if an ENGINE is reserved for this job */
218 /* There's an ENGINE for this job ... (apparently) */
219 const EVP_MD *d = ENGINE_get_digest(impl, type->type);
222 EVPerr(EVP_F_EVP_DIGESTINIT_EX, EVP_R_INITIALIZATION_ERROR);
226 /* We'll use the ENGINE's private digest definition */
229 * Store the ENGINE functional reference so we know 'type' came
230 * from an ENGINE and we need to release it when done.
237 EVPerr(EVP_F_EVP_DIGESTINIT_EX, EVP_R_NO_DIGEST_SET);
243 if (ctx->digest != type) {
244 if (ctx->digest && ctx->digest->ctx_size) {
245 OPENSSL_clear_free(ctx->md_data, ctx->digest->ctx_size);
249 if (!(ctx->flags & EVP_MD_CTX_FLAG_NO_INIT) && type->ctx_size) {
250 ctx->update = type->update;
251 ctx->md_data = OPENSSL_zalloc(type->ctx_size);
252 if (ctx->md_data == NULL) {
253 EVPerr(EVP_F_EVP_DIGESTINIT_EX, ERR_R_MALLOC_FAILURE);
258 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODE)
263 * TODO(3.0): Temporarily no support for EVP_DigestSign* inside FIPS module
264 * or when using providers.
266 if (ctx->pctx != NULL
267 && (!EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx->pctx)
268 || ctx->pctx->op.sig.signature == NULL)) {
270 r = EVP_PKEY_CTX_ctrl(ctx->pctx, -1, EVP_PKEY_OP_TYPE_SIG,
271 EVP_PKEY_CTRL_DIGESTINIT, 0, ctx);
272 if (r <= 0 && (r != -2))
276 if (ctx->flags & EVP_MD_CTX_FLAG_NO_INIT)
278 return ctx->digest->init(ctx);
281 int EVP_DigestUpdate(EVP_MD_CTX *ctx, const void *data, size_t count)
286 if (ctx->digest == NULL || ctx->digest->prov == NULL)
289 if (ctx->digest->dupdate == NULL) {
290 EVPerr(EVP_F_EVP_DIGESTUPDATE, EVP_R_UPDATE_ERROR);
293 return ctx->digest->dupdate(ctx->provctx, data, count);
295 /* TODO(3.0): Remove legacy code below */
297 return ctx->update(ctx, data, count);
300 /* The caller can assume that this removes any secret data from the context */
301 int EVP_DigestFinal(EVP_MD_CTX *ctx, unsigned char *md, unsigned int *size)
304 ret = EVP_DigestFinal_ex(ctx, md, size);
305 EVP_MD_CTX_reset(ctx);
309 /* The caller can assume that this removes any secret data from the context */
310 int EVP_DigestFinal_ex(EVP_MD_CTX *ctx, unsigned char *md, unsigned int *isize)
314 size_t mdsize = EVP_MD_size(ctx->digest);
316 if (ctx->digest == NULL || ctx->digest->prov == NULL)
319 if (ctx->digest->dfinal == NULL) {
320 EVPerr(EVP_F_EVP_DIGESTFINAL_EX, EVP_R_FINAL_ERROR);
324 ret = ctx->digest->dfinal(ctx->provctx, md, &size, mdsize);
327 if (size <= UINT_MAX) {
330 EVPerr(EVP_F_EVP_DIGESTFINAL_EX, EVP_R_FINAL_ERROR);
335 EVP_MD_CTX_reset(ctx);
338 /* TODO(3.0): Remove legacy code below */
340 OPENSSL_assert(mdsize <= EVP_MAX_MD_SIZE);
341 ret = ctx->digest->final(ctx, md);
344 if (ctx->digest->cleanup) {
345 ctx->digest->cleanup(ctx);
346 EVP_MD_CTX_set_flags(ctx, EVP_MD_CTX_FLAG_CLEANED);
348 OPENSSL_cleanse(ctx->md_data, ctx->digest->ctx_size);
352 int EVP_DigestFinalXOF(EVP_MD_CTX *ctx, unsigned char *md, size_t size)
355 OSSL_PARAM params[2];
358 if (ctx->digest == NULL || ctx->digest->prov == NULL)
361 if (ctx->digest->dfinal == NULL) {
362 EVPerr(EVP_F_EVP_DIGESTFINALXOF, EVP_R_FINAL_ERROR);
366 params[i++] = OSSL_PARAM_construct_size_t(OSSL_DIGEST_PARAM_XOFLEN, &size);
367 params[i++] = OSSL_PARAM_construct_end();
369 if (EVP_MD_CTX_set_params(ctx, params) > 0)
370 ret = ctx->digest->dfinal(ctx->provctx, md, &size, size);
371 EVP_MD_CTX_reset(ctx);
375 if (ctx->digest->flags & EVP_MD_FLAG_XOF
377 && ctx->digest->md_ctrl(ctx, EVP_MD_CTRL_XOF_LEN, (int)size, NULL)) {
378 ret = ctx->digest->final(ctx, md);
379 if (ctx->digest->cleanup != NULL) {
380 ctx->digest->cleanup(ctx);
381 EVP_MD_CTX_set_flags(ctx, EVP_MD_CTX_FLAG_CLEANED);
383 OPENSSL_cleanse(ctx->md_data, ctx->digest->ctx_size);
385 EVPerr(EVP_F_EVP_DIGESTFINALXOF, EVP_R_NOT_XOF_OR_INVALID_LENGTH);
391 int EVP_MD_CTX_copy(EVP_MD_CTX *out, const EVP_MD_CTX *in)
393 EVP_MD_CTX_reset(out);
394 return EVP_MD_CTX_copy_ex(out, in);
397 int EVP_MD_CTX_copy_ex(EVP_MD_CTX *out, const EVP_MD_CTX *in)
399 unsigned char *tmp_buf;
401 if (in == NULL || in->digest == NULL) {
402 EVPerr(EVP_F_EVP_MD_CTX_COPY_EX, EVP_R_INPUT_NOT_INITIALIZED);
406 if (in->digest->prov == NULL)
409 if (in->digest->dupctx == NULL) {
410 EVPerr(EVP_F_EVP_MD_CTX_COPY_EX, EVP_R_NOT_ABLE_TO_COPY_CTX);
414 EVP_MD_CTX_reset(out);
415 if (out->fetched_digest != NULL)
416 EVP_MD_free(out->fetched_digest);
418 /* NULL out pointers in case of error */
422 if (in->fetched_digest != NULL)
423 EVP_MD_up_ref(in->fetched_digest);
425 out->provctx = in->digest->dupctx(in->provctx);
426 if (out->provctx == NULL) {
427 EVPerr(EVP_F_EVP_MD_CTX_COPY_EX, EVP_R_NOT_ABLE_TO_COPY_CTX);
431 /* copied EVP_MD_CTX should free the copied EVP_PKEY_CTX */
432 EVP_MD_CTX_clear_flags(out, EVP_MD_CTX_FLAG_KEEP_PKEY_CTX);
434 /* TODO(3.0): Temporarily no support for EVP_DigestSign* in FIPS module */
435 if (in->pctx != NULL) {
436 out->pctx = EVP_PKEY_CTX_dup(in->pctx);
437 if (out->pctx == NULL) {
438 EVPerr(EVP_F_EVP_MD_CTX_COPY_EX, EVP_R_NOT_ABLE_TO_COPY_CTX);
439 EVP_MD_CTX_reset(out);
447 /* TODO(3.0): Remove legacy code below */
449 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODE)
450 /* Make sure it's safe to copy a digest context using an ENGINE */
451 if (in->engine && !ENGINE_init(in->engine)) {
452 EVPerr(EVP_F_EVP_MD_CTX_COPY_EX, ERR_R_ENGINE_LIB);
457 if (out->digest == in->digest) {
458 tmp_buf = out->md_data;
459 EVP_MD_CTX_set_flags(out, EVP_MD_CTX_FLAG_REUSE);
462 EVP_MD_CTX_reset(out);
463 memcpy(out, in, sizeof(*out));
465 /* copied EVP_MD_CTX should free the copied EVP_PKEY_CTX */
466 EVP_MD_CTX_clear_flags(out, EVP_MD_CTX_FLAG_KEEP_PKEY_CTX);
468 /* Null these variables, since they are getting fixed up
469 * properly below. Anything else may cause a memleak and/or
470 * double free if any of the memory allocations below fail
475 if (in->md_data && out->digest->ctx_size) {
477 out->md_data = tmp_buf;
479 out->md_data = OPENSSL_malloc(out->digest->ctx_size);
480 if (out->md_data == NULL) {
481 EVPerr(EVP_F_EVP_MD_CTX_COPY_EX, ERR_R_MALLOC_FAILURE);
485 memcpy(out->md_data, in->md_data, out->digest->ctx_size);
488 out->update = in->update;
491 /* TODO(3.0): Temporarily no support for EVP_DigestSign* in FIPS module */
493 out->pctx = EVP_PKEY_CTX_dup(in->pctx);
495 EVP_MD_CTX_reset(out);
501 if (out->digest->copy)
502 return out->digest->copy(out, in);
507 int EVP_Digest(const void *data, size_t count,
508 unsigned char *md, unsigned int *size, const EVP_MD *type,
511 EVP_MD_CTX *ctx = EVP_MD_CTX_new();
516 EVP_MD_CTX_set_flags(ctx, EVP_MD_CTX_FLAG_ONESHOT);
517 ret = EVP_DigestInit_ex(ctx, type, impl)
518 && EVP_DigestUpdate(ctx, data, count)
519 && EVP_DigestFinal_ex(ctx, md, size);
520 EVP_MD_CTX_free(ctx);
525 int EVP_MD_get_params(const EVP_MD *digest, OSSL_PARAM params[])
527 if (digest != NULL && digest->get_params != NULL)
528 return digest->get_params(params);
532 const OSSL_PARAM *EVP_MD_gettable_params(const EVP_MD *digest)
534 if (digest != NULL && digest->gettable_params != NULL)
535 return digest->gettable_params();
539 int EVP_MD_CTX_set_params(EVP_MD_CTX *ctx, const OSSL_PARAM params[])
541 EVP_PKEY_CTX *pctx = ctx->pctx;
543 if (ctx->digest != NULL && ctx->digest->set_ctx_params != NULL)
544 return ctx->digest->set_ctx_params(ctx->provctx, params);
547 && (pctx->operation == EVP_PKEY_OP_VERIFYCTX
548 || pctx->operation == EVP_PKEY_OP_SIGNCTX)
549 && pctx->op.sig.sigprovctx != NULL
550 && pctx->op.sig.signature->set_ctx_md_params != NULL)
551 return pctx->op.sig.signature->set_ctx_md_params(pctx->op.sig.sigprovctx,
556 const OSSL_PARAM *EVP_MD_settable_ctx_params(const EVP_MD *md)
558 if (md != NULL && md->settable_ctx_params != NULL)
559 return md->settable_ctx_params();
563 const OSSL_PARAM *EVP_MD_CTX_settable_params(EVP_MD_CTX *ctx)
568 && ctx->digest != NULL
569 && ctx->digest->settable_ctx_params != NULL)
570 return ctx->digest->settable_ctx_params();
574 && (pctx->operation == EVP_PKEY_OP_VERIFYCTX
575 || pctx->operation == EVP_PKEY_OP_SIGNCTX)
576 && pctx->op.sig.sigprovctx != NULL
577 && pctx->op.sig.signature->settable_ctx_md_params != NULL)
578 return pctx->op.sig.signature->settable_ctx_md_params(
579 pctx->op.sig.sigprovctx);
584 int EVP_MD_CTX_get_params(EVP_MD_CTX *ctx, OSSL_PARAM params[])
586 EVP_PKEY_CTX *pctx = ctx->pctx;
588 if (ctx->digest != NULL && ctx->digest->get_params != NULL)
589 return ctx->digest->get_ctx_params(ctx->provctx, params);
592 && (pctx->operation == EVP_PKEY_OP_VERIFYCTX
593 || pctx->operation == EVP_PKEY_OP_SIGNCTX)
594 && pctx->op.sig.sigprovctx != NULL
595 && pctx->op.sig.signature->get_ctx_md_params != NULL)
596 return pctx->op.sig.signature->get_ctx_md_params(pctx->op.sig.sigprovctx,
602 const OSSL_PARAM *EVP_MD_gettable_ctx_params(const EVP_MD *md)
604 if (md != NULL && md->gettable_ctx_params != NULL)
605 return md->gettable_ctx_params();
609 const OSSL_PARAM *EVP_MD_CTX_gettable_params(EVP_MD_CTX *ctx)
614 && ctx->digest != NULL
615 && ctx->digest->gettable_ctx_params != NULL)
616 return ctx->digest->gettable_ctx_params();
620 && (pctx->operation == EVP_PKEY_OP_VERIFYCTX
621 || pctx->operation == EVP_PKEY_OP_SIGNCTX)
622 && pctx->op.sig.sigprovctx != NULL
623 && pctx->op.sig.signature->gettable_ctx_md_params != NULL)
624 return pctx->op.sig.signature->gettable_ctx_md_params(
625 pctx->op.sig.sigprovctx);
630 /* TODO(3.0): Remove legacy code below - only used by engines & DigestSign */
631 int EVP_MD_CTX_ctrl(EVP_MD_CTX *ctx, int cmd, int p1, void *p2)
633 int ret = EVP_CTRL_RET_UNSUPPORTED;
636 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
638 if (ctx == NULL || ctx->digest == NULL) {
639 ERR_raise(ERR_LIB_EVP, EVP_R_MESSAGE_DIGEST_IS_NULL);
643 if (ctx->digest->prov == NULL
644 && (ctx->pctx == NULL
645 || (ctx->pctx->operation != EVP_PKEY_OP_VERIFYCTX
646 && ctx->pctx->operation != EVP_PKEY_OP_SIGNCTX)))
650 case EVP_MD_CTRL_XOF_LEN:
652 params[0] = OSSL_PARAM_construct_size_t(OSSL_DIGEST_PARAM_XOFLEN, &sz);
654 case EVP_MD_CTRL_MICALG:
656 params[0] = OSSL_PARAM_construct_utf8_string(OSSL_DIGEST_PARAM_MICALG,
660 return EVP_CTRL_RET_UNSUPPORTED;
664 ret = EVP_MD_CTX_set_params(ctx, params);
666 ret = EVP_MD_CTX_get_params(ctx, params);
670 /* TODO(3.0): Remove legacy code below */
672 if (ctx->digest->md_ctrl == NULL) {
673 ERR_raise(ERR_LIB_EVP, EVP_R_CTRL_NOT_IMPLEMENTED);
677 ret = ctx->digest->md_ctrl(ctx, cmd, p1, p2);
683 EVP_MD *evp_md_new(void)
685 EVP_MD *md = OPENSSL_zalloc(sizeof(*md));
688 md->lock = CRYPTO_THREAD_lock_new();
689 if (md->lock == NULL) {
699 * FIPS module note: since internal fetches will be entirely
700 * provider based, we know that none of its code depends on legacy
701 * NIDs or any functionality that use them.
704 /* TODO(3.x) get rid of the need for legacy NIDs */
705 static void set_legacy_nid(const char *name, void *vlegacy_nid)
708 int *legacy_nid = vlegacy_nid;
710 if (*legacy_nid == -1) /* We found a clash already */
712 if ((nid = OBJ_sn2nid(name)) == NID_undef
713 && (nid = OBJ_ln2nid(name)) == NID_undef)
715 if (*legacy_nid != NID_undef && *legacy_nid != nid) {
723 static void *evp_md_from_dispatch(int name_id,
724 const OSSL_DISPATCH *fns,
725 OSSL_PROVIDER *prov, void *unused)
730 /* EVP_MD_fetch() will set the legacy NID if available */
731 if ((md = evp_md_new()) == NULL) {
732 EVPerr(0, ERR_R_MALLOC_FAILURE);
737 /* TODO(3.x) get rid of the need for legacy NIDs */
738 md->type = NID_undef;
739 evp_doall_names(prov, name_id, set_legacy_nid, &md->type);
740 if (md->type == -1) {
741 ERR_raise(ERR_LIB_EVP, ERR_R_INTERNAL_ERROR);
747 md->name_id = name_id;
749 for (; fns->function_id != 0; fns++) {
750 switch (fns->function_id) {
751 case OSSL_FUNC_DIGEST_NEWCTX:
752 if (md->newctx == NULL) {
753 md->newctx = OSSL_get_OP_digest_newctx(fns);
757 case OSSL_FUNC_DIGEST_INIT:
758 if (md->dinit == NULL) {
759 md->dinit = OSSL_get_OP_digest_init(fns);
763 case OSSL_FUNC_DIGEST_UPDATE:
764 if (md->dupdate == NULL) {
765 md->dupdate = OSSL_get_OP_digest_update(fns);
769 case OSSL_FUNC_DIGEST_FINAL:
770 if (md->dfinal == NULL) {
771 md->dfinal = OSSL_get_OP_digest_final(fns);
775 case OSSL_FUNC_DIGEST_DIGEST:
776 if (md->digest == NULL)
777 md->digest = OSSL_get_OP_digest_digest(fns);
778 /* We don't increment fnct for this as it is stand alone */
780 case OSSL_FUNC_DIGEST_FREECTX:
781 if (md->freectx == NULL) {
782 md->freectx = OSSL_get_OP_digest_freectx(fns);
786 case OSSL_FUNC_DIGEST_DUPCTX:
787 if (md->dupctx == NULL)
788 md->dupctx = OSSL_get_OP_digest_dupctx(fns);
790 case OSSL_FUNC_DIGEST_GET_PARAMS:
791 if (md->get_params == NULL)
792 md->get_params = OSSL_get_OP_digest_get_params(fns);
794 case OSSL_FUNC_DIGEST_SET_CTX_PARAMS:
795 if (md->set_ctx_params == NULL)
796 md->set_ctx_params = OSSL_get_OP_digest_set_ctx_params(fns);
798 case OSSL_FUNC_DIGEST_GET_CTX_PARAMS:
799 if (md->get_ctx_params == NULL)
800 md->get_ctx_params = OSSL_get_OP_digest_get_ctx_params(fns);
802 case OSSL_FUNC_DIGEST_GETTABLE_PARAMS:
803 if (md->gettable_params == NULL)
804 md->gettable_params = OSSL_get_OP_digest_gettable_params(fns);
806 case OSSL_FUNC_DIGEST_SETTABLE_CTX_PARAMS:
807 if (md->settable_ctx_params == NULL)
808 md->settable_ctx_params =
809 OSSL_get_OP_digest_settable_ctx_params(fns);
811 case OSSL_FUNC_DIGEST_GETTABLE_CTX_PARAMS:
812 if (md->gettable_ctx_params == NULL)
813 md->gettable_ctx_params =
814 OSSL_get_OP_digest_gettable_ctx_params(fns);
818 if ((fncnt != 0 && fncnt != 5)
819 || (fncnt == 0 && md->digest == NULL)) {
821 * In order to be a consistent set of functions we either need the
822 * whole set of init/update/final etc functions or none of them.
823 * The "digest" function can standalone. We at least need one way to
827 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_PROVIDER_FUNCTIONS);
832 ossl_provider_up_ref(prov);
837 static int evp_md_up_ref(void *md)
839 return EVP_MD_up_ref(md);
842 static void evp_md_free(void *md)
847 EVP_MD *EVP_MD_fetch(OPENSSL_CTX *ctx, const char *algorithm,
848 const char *properties)
851 evp_generic_fetch(ctx, OSSL_OP_DIGEST, algorithm, properties,
852 evp_md_from_dispatch, NULL, evp_md_up_ref,
858 int EVP_MD_up_ref(EVP_MD *md)
862 CRYPTO_UP_REF(&md->refcnt, &ref, md->lock);
866 void EVP_MD_free(EVP_MD *md)
873 CRYPTO_DOWN_REF(&md->refcnt, &i, md->lock);
876 ossl_provider_free(md->prov);
877 CRYPTO_THREAD_lock_free(md->lock);
881 void EVP_MD_do_all_ex(OPENSSL_CTX *libctx,
882 void (*fn)(EVP_MD *mac, void *arg),
885 evp_generic_do_all(libctx, OSSL_OP_DIGEST,
886 (void (*)(void *, void *))fn, arg,
887 evp_md_from_dispatch, NULL, evp_md_free);