2 * Copyright 1995-2020 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
10 /* We need to use some engine deprecated APIs */
11 #define OPENSSL_SUPPRESS_DEPRECATED
14 #include <openssl/objects.h>
15 #include <openssl/evp.h>
16 #include <openssl/ec.h>
17 #include <openssl/engine.h>
18 #include <openssl/params.h>
19 #include <openssl/core_names.h>
20 #include "internal/cryptlib.h"
21 #include "crypto/evp.h"
22 #include "internal/provider.h"
23 #include "evp_local.h"
26 void evp_md_ctx_clear_digest(EVP_MD_CTX *ctx, int force)
28 EVP_MD_free(ctx->fetched_digest);
29 ctx->fetched_digest = NULL;
30 ctx->reqdigest = NULL;
32 if (ctx->provctx != NULL) {
33 if (ctx->digest->freectx != NULL)
34 ctx->digest->freectx(ctx->provctx);
36 EVP_MD_CTX_set_flags(ctx, EVP_MD_CTX_FLAG_CLEANED);
39 /* TODO(3.0): Remove legacy code below */
42 * Don't assume ctx->md_data was cleaned in EVP_Digest_Final, because
43 * sometimes only copies of the context are ever finalised.
45 if (ctx->digest && ctx->digest->cleanup
46 && !EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_CLEANED))
47 ctx->digest->cleanup(ctx);
48 if (ctx->digest && ctx->digest->ctx_size && ctx->md_data
49 && (!EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_REUSE) || force))
50 OPENSSL_clear_free(ctx->md_data, ctx->digest->ctx_size);
54 #if !defined(FIPS_MODULE) && !defined(OPENSSL_NO_ENGINE)
55 ENGINE_finish(ctx->engine);
60 /* This call frees resources associated with the context */
61 int EVP_MD_CTX_reset(EVP_MD_CTX *ctx)
67 /* TODO(3.0): Temporarily no support for EVP_DigestSign* in FIPS module */
69 * pctx should be freed by the user of EVP_MD_CTX
70 * if EVP_MD_CTX_FLAG_KEEP_PKEY_CTX is set
72 if (!EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_KEEP_PKEY_CTX)) {
73 EVP_PKEY_CTX_free(ctx->pctx);
78 evp_md_ctx_clear_digest(ctx, 0);
79 OPENSSL_cleanse(ctx, sizeof(*ctx));
85 EVP_MD_CTX *evp_md_ctx_new_ex(EVP_PKEY *pkey, const ASN1_OCTET_STRING *id,
86 OSSL_LIB_CTX *libctx, const char *propq)
89 EVP_PKEY_CTX *pctx = NULL;
91 if ((ctx = EVP_MD_CTX_new()) == NULL
92 || (pctx = EVP_PKEY_CTX_new_from_pkey(libctx, pkey, propq)) == NULL) {
93 ASN1err(0, ERR_R_MALLOC_FAILURE);
97 # ifndef OPENSSL_NO_EC
98 if (id != NULL && EVP_PKEY_CTX_set1_id(pctx, id->data, id->length) <= 0) {
99 ASN1err(0, ERR_R_MALLOC_FAILURE);
104 EVP_MD_CTX_set_pkey_ctx(ctx, pctx);
108 EVP_PKEY_CTX_free(pctx);
109 EVP_MD_CTX_free(ctx);
114 EVP_MD_CTX *EVP_MD_CTX_new(void)
116 return OPENSSL_zalloc(sizeof(EVP_MD_CTX));
119 void EVP_MD_CTX_free(EVP_MD_CTX *ctx)
124 EVP_MD_CTX_reset(ctx);
130 int EVP_DigestInit(EVP_MD_CTX *ctx, const EVP_MD *type)
132 EVP_MD_CTX_reset(ctx);
133 return EVP_DigestInit_ex(ctx, type, NULL);
136 int EVP_DigestInit_ex(EVP_MD_CTX *ctx, const EVP_MD *type, ENGINE *impl)
138 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
139 ENGINE *tmpimpl = NULL;
142 #if !defined(FIPS_MODULE)
143 if (ctx->pctx != NULL
144 && EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx->pctx)
145 && ctx->pctx->op.sig.sigprovctx != NULL) {
147 * Prior to OpenSSL 3.0 calling EVP_DigestInit_ex() on an mdctx
148 * previously initialised with EVP_DigestSignInit() would retain
149 * information about the key, and re-initialise for another sign
150 * operation. So in that case we redirect to EVP_DigestSignInit()
152 if (ctx->pctx->operation == EVP_PKEY_OP_SIGNCTX)
153 return EVP_DigestSignInit(ctx, NULL, type, impl, NULL);
154 if (ctx->pctx->operation == EVP_PKEY_OP_VERIFYCTX)
155 return EVP_DigestVerifyInit(ctx, NULL, type, impl, NULL);
156 EVPerr(0, EVP_R_UPDATE_ERROR);
161 EVP_MD_CTX_clear_flags(ctx, EVP_MD_CTX_FLAG_CLEANED);
163 if (ctx->provctx != NULL) {
164 if (!ossl_assert(ctx->digest != NULL)) {
165 EVPerr(EVP_F_EVP_DIGESTINIT_EX, EVP_R_INITIALIZATION_ERROR);
168 if (ctx->digest->freectx != NULL)
169 ctx->digest->freectx(ctx->provctx);
174 ctx->reqdigest = type;
176 /* TODO(3.0): Legacy work around code below. Remove this */
177 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
179 * Whether it's nice or not, "Inits" can be used on "Final"'d contexts so
180 * this context may already have an ENGINE! Try to avoid releasing the
181 * previous handle, re-querying for an ENGINE, and having a
182 * reinitialisation, when it may all be unnecessary.
184 if (ctx->engine && ctx->digest &&
185 (type == NULL || (type->type == ctx->digest->type)))
190 * Ensure an ENGINE left lying around from last time is cleared (the
191 * previous check attempted to avoid this if the same ENGINE and
192 * EVP_MD could be used).
194 ENGINE_finish(ctx->engine);
198 if (type != NULL && impl == NULL)
199 tmpimpl = ENGINE_get_digest_engine(type->type);
203 * If there are engines involved or EVP_MD_CTX_FLAG_NO_INIT is set then we
204 * should use legacy handling for now.
206 if (ctx->engine != NULL
208 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
211 || (ctx->flags & EVP_MD_CTX_FLAG_NO_INIT) != 0) {
212 if (ctx->digest == ctx->fetched_digest)
214 EVP_MD_free(ctx->fetched_digest);
215 ctx->fetched_digest = NULL;
219 if (ctx->digest != NULL && ctx->digest->ctx_size > 0) {
220 OPENSSL_clear_free(ctx->md_data, ctx->digest->ctx_size);
224 /* TODO(3.0): Start of non-legacy code below */
226 if (type->prov == NULL) {
228 /* We only do explicit fetches inside the FIPS module */
229 EVPerr(EVP_F_EVP_DIGESTINIT_EX, EVP_R_INITIALIZATION_ERROR);
232 EVP_MD *provmd = EVP_MD_fetch(NULL, OBJ_nid2sn(type->type), "");
237 EVP_MD_free(ctx->fetched_digest);
238 ctx->fetched_digest = provmd;
242 if (ctx->provctx != NULL && ctx->digest != NULL && ctx->digest != type) {
243 if (ctx->digest->freectx != NULL)
244 ctx->digest->freectx(ctx->provctx);
248 if (ctx->provctx == NULL) {
249 ctx->provctx = ctx->digest->newctx(ossl_provider_ctx(type->prov));
250 if (ctx->provctx == NULL) {
251 EVPerr(EVP_F_EVP_DIGESTINIT_EX, EVP_R_INITIALIZATION_ERROR);
256 if (ctx->digest->dinit == NULL) {
257 EVPerr(EVP_F_EVP_DIGESTINIT_EX, EVP_R_INITIALIZATION_ERROR);
261 return ctx->digest->dinit(ctx->provctx);
263 /* TODO(3.0): Remove legacy code below */
266 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
269 if (!ENGINE_init(impl)) {
270 EVPerr(EVP_F_EVP_DIGESTINIT_EX, EVP_R_INITIALIZATION_ERROR);
274 /* Ask if an ENGINE is reserved for this job */
278 /* There's an ENGINE for this job ... (apparently) */
279 const EVP_MD *d = ENGINE_get_digest(impl, type->type);
282 EVPerr(EVP_F_EVP_DIGESTINIT_EX, EVP_R_INITIALIZATION_ERROR);
286 /* We'll use the ENGINE's private digest definition */
289 * Store the ENGINE functional reference so we know 'type' came
290 * from an ENGINE and we need to release it when done.
297 EVPerr(EVP_F_EVP_DIGESTINIT_EX, EVP_R_NO_DIGEST_SET);
303 if (ctx->digest != type) {
304 if (ctx->digest && ctx->digest->ctx_size) {
305 OPENSSL_clear_free(ctx->md_data, ctx->digest->ctx_size);
309 if (!(ctx->flags & EVP_MD_CTX_FLAG_NO_INIT) && type->ctx_size) {
310 ctx->update = type->update;
311 ctx->md_data = OPENSSL_zalloc(type->ctx_size);
312 if (ctx->md_data == NULL) {
313 EVPerr(EVP_F_EVP_DIGESTINIT_EX, ERR_R_MALLOC_FAILURE);
318 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
323 * TODO(3.0): Temporarily no support for EVP_DigestSign* inside FIPS module
324 * or when using providers.
326 if (ctx->pctx != NULL
327 && (!EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx->pctx)
328 || ctx->pctx->op.sig.signature == NULL)) {
330 r = EVP_PKEY_CTX_ctrl(ctx->pctx, -1, EVP_PKEY_OP_TYPE_SIG,
331 EVP_PKEY_CTRL_DIGESTINIT, 0, ctx);
332 if (r <= 0 && (r != -2))
336 if (ctx->flags & EVP_MD_CTX_FLAG_NO_INIT)
338 return ctx->digest->init(ctx);
341 int EVP_DigestUpdate(EVP_MD_CTX *ctx, const void *data, size_t count)
346 if (ctx->pctx != NULL
347 && EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx->pctx)
348 && ctx->pctx->op.sig.sigprovctx != NULL) {
350 * Prior to OpenSSL 3.0 EVP_DigestSignUpdate() and
351 * EVP_DigestVerifyUpdate() were just macros for EVP_DigestUpdate().
352 * Some code calls EVP_DigestUpdate() directly even when initialised
353 * with EVP_DigestSignInit_ex() or
354 * EVP_DigestVerifyInit_ex(), so we detect that and redirect to
355 * the correct EVP_Digest*Update() function
357 if (ctx->pctx->operation == EVP_PKEY_OP_SIGNCTX)
358 return EVP_DigestSignUpdate(ctx, data, count);
359 if (ctx->pctx->operation == EVP_PKEY_OP_VERIFYCTX)
360 return EVP_DigestVerifyUpdate(ctx, data, count);
361 EVPerr(EVP_F_EVP_DIGESTUPDATE, EVP_R_UPDATE_ERROR);
365 if (ctx->digest == NULL
366 || ctx->digest->prov == NULL
367 || (ctx->flags & EVP_MD_CTX_FLAG_NO_INIT) != 0)
370 if (ctx->digest->dupdate == NULL) {
371 EVPerr(EVP_F_EVP_DIGESTUPDATE, EVP_R_UPDATE_ERROR);
374 return ctx->digest->dupdate(ctx->provctx, data, count);
376 /* TODO(3.0): Remove legacy code below */
378 return ctx->update(ctx, data, count);
381 /* The caller can assume that this removes any secret data from the context */
382 int EVP_DigestFinal(EVP_MD_CTX *ctx, unsigned char *md, unsigned int *size)
385 ret = EVP_DigestFinal_ex(ctx, md, size);
386 EVP_MD_CTX_reset(ctx);
390 /* The caller can assume that this removes any secret data from the context */
391 int EVP_DigestFinal_ex(EVP_MD_CTX *ctx, unsigned char *md, unsigned int *isize)
397 if (ctx->digest == NULL)
400 sz = EVP_MD_size(ctx->digest);
404 if (ctx->digest->prov == NULL)
407 if (ctx->digest->dfinal == NULL) {
408 EVPerr(EVP_F_EVP_DIGESTFINAL_EX, EVP_R_FINAL_ERROR);
412 ret = ctx->digest->dfinal(ctx->provctx, md, &size, mdsize);
415 if (size <= UINT_MAX) {
418 EVPerr(EVP_F_EVP_DIGESTFINAL_EX, EVP_R_FINAL_ERROR);
425 /* TODO(3.0): Remove legacy code below */
427 OPENSSL_assert(mdsize <= EVP_MAX_MD_SIZE);
428 ret = ctx->digest->final(ctx, md);
431 if (ctx->digest->cleanup) {
432 ctx->digest->cleanup(ctx);
433 EVP_MD_CTX_set_flags(ctx, EVP_MD_CTX_FLAG_CLEANED);
435 OPENSSL_cleanse(ctx->md_data, ctx->digest->ctx_size);
439 int EVP_DigestFinalXOF(EVP_MD_CTX *ctx, unsigned char *md, size_t size)
442 OSSL_PARAM params[2];
445 if (ctx->digest == NULL || ctx->digest->prov == NULL)
448 if (ctx->digest->dfinal == NULL) {
449 EVPerr(EVP_F_EVP_DIGESTFINALXOF, EVP_R_FINAL_ERROR);
453 params[i++] = OSSL_PARAM_construct_size_t(OSSL_DIGEST_PARAM_XOFLEN, &size);
454 params[i++] = OSSL_PARAM_construct_end();
456 if (EVP_MD_CTX_set_params(ctx, params) > 0)
457 ret = ctx->digest->dfinal(ctx->provctx, md, &size, size);
458 EVP_MD_CTX_reset(ctx);
462 if (ctx->digest->flags & EVP_MD_FLAG_XOF
464 && ctx->digest->md_ctrl(ctx, EVP_MD_CTRL_XOF_LEN, (int)size, NULL)) {
465 ret = ctx->digest->final(ctx, md);
466 if (ctx->digest->cleanup != NULL) {
467 ctx->digest->cleanup(ctx);
468 EVP_MD_CTX_set_flags(ctx, EVP_MD_CTX_FLAG_CLEANED);
470 OPENSSL_cleanse(ctx->md_data, ctx->digest->ctx_size);
472 EVPerr(EVP_F_EVP_DIGESTFINALXOF, EVP_R_NOT_XOF_OR_INVALID_LENGTH);
478 int EVP_MD_CTX_copy(EVP_MD_CTX *out, const EVP_MD_CTX *in)
480 EVP_MD_CTX_reset(out);
481 return EVP_MD_CTX_copy_ex(out, in);
484 int EVP_MD_CTX_copy_ex(EVP_MD_CTX *out, const EVP_MD_CTX *in)
486 unsigned char *tmp_buf;
488 if (in == NULL || in->digest == NULL) {
489 EVPerr(EVP_F_EVP_MD_CTX_COPY_EX, EVP_R_INPUT_NOT_INITIALIZED);
493 if (in->digest->prov == NULL
494 || (in->flags & EVP_MD_CTX_FLAG_NO_INIT) != 0)
497 if (in->digest->dupctx == NULL) {
498 EVPerr(EVP_F_EVP_MD_CTX_COPY_EX, EVP_R_NOT_ABLE_TO_COPY_CTX);
502 EVP_MD_CTX_reset(out);
503 if (out->fetched_digest != NULL)
504 EVP_MD_free(out->fetched_digest);
506 /* NULL out pointers in case of error */
510 if (in->fetched_digest != NULL)
511 EVP_MD_up_ref(in->fetched_digest);
513 if (in->provctx != NULL) {
514 out->provctx = in->digest->dupctx(in->provctx);
515 if (out->provctx == NULL) {
516 EVPerr(EVP_F_EVP_MD_CTX_COPY_EX, EVP_R_NOT_ABLE_TO_COPY_CTX);
521 /* copied EVP_MD_CTX should free the copied EVP_PKEY_CTX */
522 EVP_MD_CTX_clear_flags(out, EVP_MD_CTX_FLAG_KEEP_PKEY_CTX);
524 /* TODO(3.0): Temporarily no support for EVP_DigestSign* in FIPS module */
525 if (in->pctx != NULL) {
526 out->pctx = EVP_PKEY_CTX_dup(in->pctx);
527 if (out->pctx == NULL) {
528 EVPerr(EVP_F_EVP_MD_CTX_COPY_EX, EVP_R_NOT_ABLE_TO_COPY_CTX);
529 EVP_MD_CTX_reset(out);
537 /* TODO(3.0): Remove legacy code below */
539 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
540 /* Make sure it's safe to copy a digest context using an ENGINE */
541 if (in->engine && !ENGINE_init(in->engine)) {
542 EVPerr(EVP_F_EVP_MD_CTX_COPY_EX, ERR_R_ENGINE_LIB);
547 if (out->digest == in->digest) {
548 tmp_buf = out->md_data;
549 EVP_MD_CTX_set_flags(out, EVP_MD_CTX_FLAG_REUSE);
552 EVP_MD_CTX_reset(out);
553 memcpy(out, in, sizeof(*out));
555 /* copied EVP_MD_CTX should free the copied EVP_PKEY_CTX */
556 EVP_MD_CTX_clear_flags(out, EVP_MD_CTX_FLAG_KEEP_PKEY_CTX);
558 /* Null these variables, since they are getting fixed up
559 * properly below. Anything else may cause a memleak and/or
560 * double free if any of the memory allocations below fail
565 if (in->md_data && out->digest->ctx_size) {
567 out->md_data = tmp_buf;
569 out->md_data = OPENSSL_malloc(out->digest->ctx_size);
570 if (out->md_data == NULL) {
571 EVPerr(EVP_F_EVP_MD_CTX_COPY_EX, ERR_R_MALLOC_FAILURE);
575 memcpy(out->md_data, in->md_data, out->digest->ctx_size);
578 out->update = in->update;
581 /* TODO(3.0): Temporarily no support for EVP_DigestSign* in FIPS module */
583 out->pctx = EVP_PKEY_CTX_dup(in->pctx);
585 EVP_MD_CTX_reset(out);
591 if (out->digest->copy)
592 return out->digest->copy(out, in);
597 int EVP_Digest(const void *data, size_t count,
598 unsigned char *md, unsigned int *size, const EVP_MD *type,
601 EVP_MD_CTX *ctx = EVP_MD_CTX_new();
606 EVP_MD_CTX_set_flags(ctx, EVP_MD_CTX_FLAG_ONESHOT);
607 ret = EVP_DigestInit_ex(ctx, type, impl)
608 && EVP_DigestUpdate(ctx, data, count)
609 && EVP_DigestFinal_ex(ctx, md, size);
610 EVP_MD_CTX_free(ctx);
615 int EVP_MD_get_params(const EVP_MD *digest, OSSL_PARAM params[])
617 if (digest != NULL && digest->get_params != NULL)
618 return digest->get_params(params);
622 const OSSL_PARAM *EVP_MD_gettable_params(const EVP_MD *digest)
624 if (digest != NULL && digest->gettable_params != NULL)
625 return digest->gettable_params(
626 ossl_provider_ctx(EVP_MD_provider(digest)));
630 int EVP_MD_CTX_set_params(EVP_MD_CTX *ctx, const OSSL_PARAM params[])
632 EVP_PKEY_CTX *pctx = ctx->pctx;
634 /* If we have a pctx then we should try that first */
636 && (pctx->operation == EVP_PKEY_OP_VERIFYCTX
637 || pctx->operation == EVP_PKEY_OP_SIGNCTX)
638 && pctx->op.sig.sigprovctx != NULL
639 && pctx->op.sig.signature->set_ctx_md_params != NULL)
640 return pctx->op.sig.signature->set_ctx_md_params(pctx->op.sig.sigprovctx,
643 if (ctx->digest != NULL && ctx->digest->set_ctx_params != NULL)
644 return ctx->digest->set_ctx_params(ctx->provctx, params);
649 const OSSL_PARAM *EVP_MD_settable_ctx_params(const EVP_MD *md)
651 if (md != NULL && md->settable_ctx_params != NULL)
652 return md->settable_ctx_params(ossl_provider_ctx(EVP_MD_provider(md)));
656 const OSSL_PARAM *EVP_MD_CTX_settable_params(EVP_MD_CTX *ctx)
663 /* If we have a pctx then we should try that first */
666 && (pctx->operation == EVP_PKEY_OP_VERIFYCTX
667 || pctx->operation == EVP_PKEY_OP_SIGNCTX)
668 && pctx->op.sig.sigprovctx != NULL
669 && pctx->op.sig.signature->settable_ctx_md_params != NULL)
670 return pctx->op.sig.signature->settable_ctx_md_params(
671 pctx->op.sig.sigprovctx);
673 if (ctx->digest != NULL && ctx->digest->settable_ctx_params != NULL)
674 return ctx->digest->settable_ctx_params(
675 ossl_provider_ctx(EVP_MD_provider(ctx->digest)));
680 int EVP_MD_CTX_get_params(EVP_MD_CTX *ctx, OSSL_PARAM params[])
682 EVP_PKEY_CTX *pctx = ctx->pctx;
684 /* If we have a pctx then we should try that first */
686 && (pctx->operation == EVP_PKEY_OP_VERIFYCTX
687 || pctx->operation == EVP_PKEY_OP_SIGNCTX)
688 && pctx->op.sig.sigprovctx != NULL
689 && pctx->op.sig.signature->get_ctx_md_params != NULL)
690 return pctx->op.sig.signature->get_ctx_md_params(pctx->op.sig.sigprovctx,
693 if (ctx->digest != NULL && ctx->digest->get_params != NULL)
694 return ctx->digest->get_ctx_params(ctx->provctx, params);
699 const OSSL_PARAM *EVP_MD_gettable_ctx_params(const EVP_MD *md)
701 if (md != NULL && md->gettable_ctx_params != NULL)
702 return md->gettable_ctx_params(ossl_provider_ctx(EVP_MD_provider(md)));
706 const OSSL_PARAM *EVP_MD_CTX_gettable_params(EVP_MD_CTX *ctx)
713 /* If we have a pctx then we should try that first */
716 && (pctx->operation == EVP_PKEY_OP_VERIFYCTX
717 || pctx->operation == EVP_PKEY_OP_SIGNCTX)
718 && pctx->op.sig.sigprovctx != NULL
719 && pctx->op.sig.signature->gettable_ctx_md_params != NULL)
720 return pctx->op.sig.signature->gettable_ctx_md_params(
721 pctx->op.sig.sigprovctx);
723 if (ctx->digest != NULL
724 && ctx->digest->gettable_ctx_params != NULL)
725 return ctx->digest->gettable_ctx_params(
726 ossl_provider_ctx(EVP_MD_provider(ctx->digest)));
731 /* TODO(3.0): Remove legacy code below - only used by engines & DigestSign */
732 int EVP_MD_CTX_ctrl(EVP_MD_CTX *ctx, int cmd, int p1, void *p2)
734 int ret = EVP_CTRL_RET_UNSUPPORTED;
737 OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
740 ERR_raise(ERR_LIB_EVP, ERR_R_PASSED_NULL_PARAMETER);
744 if (ctx->digest != NULL && ctx->digest->prov == NULL)
748 case EVP_MD_CTRL_XOF_LEN:
750 params[0] = OSSL_PARAM_construct_size_t(OSSL_DIGEST_PARAM_XOFLEN, &sz);
752 case EVP_MD_CTRL_MICALG:
754 params[0] = OSSL_PARAM_construct_utf8_string(OSSL_DIGEST_PARAM_MICALG,
757 case EVP_CTRL_SSL3_MASTER_SECRET:
758 params[0] = OSSL_PARAM_construct_octet_string(OSSL_DIGEST_PARAM_SSL3_MS,
766 ret = EVP_MD_CTX_set_params(ctx, params);
768 ret = EVP_MD_CTX_get_params(ctx, params);
772 /* TODO(3.0): Remove legacy code below */
774 if (ctx->digest->md_ctrl == NULL) {
775 ERR_raise(ERR_LIB_EVP, EVP_R_CTRL_NOT_IMPLEMENTED);
779 ret = ctx->digest->md_ctrl(ctx, cmd, p1, p2);
786 EVP_MD *evp_md_new(void)
788 EVP_MD *md = OPENSSL_zalloc(sizeof(*md));
791 md->lock = CRYPTO_THREAD_lock_new();
792 if (md->lock == NULL) {
802 * FIPS module note: since internal fetches will be entirely
803 * provider based, we know that none of its code depends on legacy
804 * NIDs or any functionality that use them.
807 /* TODO(3.x) get rid of the need for legacy NIDs */
808 static void set_legacy_nid(const char *name, void *vlegacy_nid)
811 int *legacy_nid = vlegacy_nid;
813 * We use lowest level function to get the associated method, because
814 * higher level functions such as EVP_get_digestbyname() have changed
815 * to look at providers too.
817 const void *legacy_method = OBJ_NAME_get(name, OBJ_NAME_TYPE_MD_METH);
819 if (*legacy_nid == -1) /* We found a clash already */
822 if (legacy_method == NULL)
824 nid = EVP_MD_nid(legacy_method);
825 if (*legacy_nid != NID_undef && *legacy_nid != nid) {
833 static void *evp_md_from_dispatch(int name_id,
834 const OSSL_DISPATCH *fns,
840 /* EVP_MD_fetch() will set the legacy NID if available */
841 if ((md = evp_md_new()) == NULL) {
842 EVPerr(0, ERR_R_MALLOC_FAILURE);
847 /* TODO(3.x) get rid of the need for legacy NIDs */
848 md->type = NID_undef;
849 evp_names_do_all(prov, name_id, set_legacy_nid, &md->type);
850 if (md->type == -1) {
851 ERR_raise(ERR_LIB_EVP, ERR_R_INTERNAL_ERROR);
857 md->name_id = name_id;
859 for (; fns->function_id != 0; fns++) {
860 switch (fns->function_id) {
861 case OSSL_FUNC_DIGEST_NEWCTX:
862 if (md->newctx == NULL) {
863 md->newctx = OSSL_FUNC_digest_newctx(fns);
867 case OSSL_FUNC_DIGEST_INIT:
868 if (md->dinit == NULL) {
869 md->dinit = OSSL_FUNC_digest_init(fns);
873 case OSSL_FUNC_DIGEST_UPDATE:
874 if (md->dupdate == NULL) {
875 md->dupdate = OSSL_FUNC_digest_update(fns);
879 case OSSL_FUNC_DIGEST_FINAL:
880 if (md->dfinal == NULL) {
881 md->dfinal = OSSL_FUNC_digest_final(fns);
885 case OSSL_FUNC_DIGEST_DIGEST:
886 if (md->digest == NULL)
887 md->digest = OSSL_FUNC_digest_digest(fns);
888 /* We don't increment fnct for this as it is stand alone */
890 case OSSL_FUNC_DIGEST_FREECTX:
891 if (md->freectx == NULL) {
892 md->freectx = OSSL_FUNC_digest_freectx(fns);
896 case OSSL_FUNC_DIGEST_DUPCTX:
897 if (md->dupctx == NULL)
898 md->dupctx = OSSL_FUNC_digest_dupctx(fns);
900 case OSSL_FUNC_DIGEST_GET_PARAMS:
901 if (md->get_params == NULL)
902 md->get_params = OSSL_FUNC_digest_get_params(fns);
904 case OSSL_FUNC_DIGEST_SET_CTX_PARAMS:
905 if (md->set_ctx_params == NULL)
906 md->set_ctx_params = OSSL_FUNC_digest_set_ctx_params(fns);
908 case OSSL_FUNC_DIGEST_GET_CTX_PARAMS:
909 if (md->get_ctx_params == NULL)
910 md->get_ctx_params = OSSL_FUNC_digest_get_ctx_params(fns);
912 case OSSL_FUNC_DIGEST_GETTABLE_PARAMS:
913 if (md->gettable_params == NULL)
914 md->gettable_params = OSSL_FUNC_digest_gettable_params(fns);
916 case OSSL_FUNC_DIGEST_SETTABLE_CTX_PARAMS:
917 if (md->settable_ctx_params == NULL)
918 md->settable_ctx_params =
919 OSSL_FUNC_digest_settable_ctx_params(fns);
921 case OSSL_FUNC_DIGEST_GETTABLE_CTX_PARAMS:
922 if (md->gettable_ctx_params == NULL)
923 md->gettable_ctx_params =
924 OSSL_FUNC_digest_gettable_ctx_params(fns);
928 if ((fncnt != 0 && fncnt != 5)
929 || (fncnt == 0 && md->digest == NULL)) {
931 * In order to be a consistent set of functions we either need the
932 * whole set of init/update/final etc functions or none of them.
933 * The "digest" function can standalone. We at least need one way to
937 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_PROVIDER_FUNCTIONS);
942 ossl_provider_up_ref(prov);
947 static int evp_md_up_ref(void *md)
949 return EVP_MD_up_ref(md);
952 static void evp_md_free(void *md)
957 EVP_MD *EVP_MD_fetch(OSSL_LIB_CTX *ctx, const char *algorithm,
958 const char *properties)
961 evp_generic_fetch(ctx, OSSL_OP_DIGEST, algorithm, properties,
962 evp_md_from_dispatch, evp_md_up_ref, evp_md_free);
967 int EVP_MD_up_ref(EVP_MD *md)
971 CRYPTO_UP_REF(&md->refcnt, &ref, md->lock);
975 void EVP_MD_free(EVP_MD *md)
982 CRYPTO_DOWN_REF(&md->refcnt, &i, md->lock);
985 ossl_provider_free(md->prov);
986 CRYPTO_THREAD_lock_free(md->lock);
990 void EVP_MD_do_all_provided(OSSL_LIB_CTX *libctx,
991 void (*fn)(EVP_MD *mac, void *arg),
994 evp_generic_do_all(libctx, OSSL_OP_DIGEST,
995 (void (*)(void *, void *))fn, arg,
996 evp_md_from_dispatch, evp_md_free);