-/* m_sigver.c */
-/* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
- * project 2006.
- */
-/* ====================================================================
- * Copyright (c) 2006,2007 The OpenSSL Project. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. All advertising materials mentioning features or use of this
- * software must display the following acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
- *
- * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
- * endorse or promote products derived from this software without
- * prior written permission. For written permission, please contact
- * licensing@OpenSSL.org.
- *
- * 5. Products derived from this software may not be called "OpenSSL"
- * nor may "OpenSSL" appear in their names without prior written
- * permission of the OpenSSL Project.
- *
- * 6. Redistributions of any form whatsoever must retain the following
- * acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
- *
- * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
- * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
- * OF THE POSSIBILITY OF SUCH DAMAGE.
- * ====================================================================
- *
- * This product includes cryptographic software written by Eric Young
- * (eay@cryptsoft.com). This product includes software written by Tim
- * Hudson (tjh@cryptsoft.com).
+/*
+ * Copyright 2006-2018 The OpenSSL Project Authors. All Rights Reserved.
*
+ * Licensed under the Apache License 2.0 (the "License"). You may not use
+ * this file except in compliance with the License. You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
*/
#include <stdio.h>
-#include "cryptlib.h"
+#include "internal/cryptlib.h"
#include <openssl/evp.h>
#include <openssl/objects.h>
#include <openssl/x509.h>
-#include "evp_locl.h"
+#include "crypto/evp.h"
+#include "internal/provider.h"
+#include "evp_local.h"
+
+#ifndef FIPS_MODE
+
+static int update(EVP_MD_CTX *ctx, const void *data, size_t datalen)
+{
+ EVPerr(EVP_F_UPDATE, EVP_R_ONLY_ONESHOT_SUPPORTED);
+ return 0;
+}
+
+/*
+ * If we get the "NULL" md then the name comes back as "UNDEF". We want to use
+ * NULL for this.
+ */
+static const char *canon_mdname(const char *mdname)
+{
+ if (mdname != NULL && strcmp(mdname, "UNDEF") == 0)
+ return NULL;
+
+ return mdname;
+}
static int do_sigver_init(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx,
- const EVP_MD *type, ENGINE *e, EVP_PKEY *pkey,
- int ver)
- {
- if (ctx->pctx == NULL)
- ctx->pctx = EVP_PKEY_CTX_new(pkey, e);
- if (ctx->pctx == NULL)
- return 0;
-
- if (type == NULL)
- {
- int def_nid;
- if (EVP_PKEY_get_default_digest_nid(pkey, &def_nid) > 0)
- type = EVP_get_digestbynid(def_nid);
- }
-
- if (type == NULL)
- {
- EVPerr(EVP_F_DO_SIGVER_INIT, EVP_R_NO_DEFAULT_DIGEST);
- return 0;
- }
-
- if (ver)
- {
- if (ctx->pctx->pmeth->verifyctx_init)
- {
- if (ctx->pctx->pmeth->verifyctx_init(ctx->pctx, ctx) <=0)
- return 0;
- ctx->pctx->operation = EVP_PKEY_OP_VERIFYCTX;
- }
- else if (EVP_PKEY_verify_init(ctx->pctx) <= 0)
- return 0;
- }
- else
- {
- if (ctx->pctx->pmeth->signctx_init)
- {
- if (ctx->pctx->pmeth->signctx_init(ctx->pctx, ctx) <= 0)
- return 0;
- ctx->pctx->operation = EVP_PKEY_OP_SIGNCTX;
- }
- else if (EVP_PKEY_sign_init(ctx->pctx) <= 0)
- return 0;
- }
- if (EVP_PKEY_CTX_set_signature_md(ctx->pctx, type) <= 0)
- return 0;
- if (pctx)
- *pctx = ctx->pctx;
- if (!EVP_DigestInit_ex(ctx, type, e))
- return 0;
- return 1;
- }
+ const EVP_MD *type, const char *mdname,
+ const char *props, ENGINE *e, EVP_PKEY *pkey,
+ int ver)
+{
+ EVP_PKEY_CTX *locpctx = NULL;
+ EVP_SIGNATURE *signature = NULL;
+ EVP_KEYMGMT *tmp_keymgmt = NULL;
+ const char *supported_sig = NULL;
+ char locmdname[80] = ""; /* 80 chars should be enough */
+ void *provkey = NULL;
+ int ret;
+
+ if (ctx->provctx != NULL) {
+ if (!ossl_assert(ctx->digest != NULL)) {
+ ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
+ return 0;
+ }
+ if (ctx->digest->freectx != NULL)
+ ctx->digest->freectx(ctx->provctx);
+ ctx->provctx = NULL;
+ }
+
+ if (ctx->pctx == NULL)
+ ctx->pctx = EVP_PKEY_CTX_new(pkey, e);
+ if (ctx->pctx == NULL)
+ return 0;
+
+ locpctx = ctx->pctx;
+ evp_pkey_ctx_free_old_ops(locpctx);
+
+ /*
+ * TODO when we stop falling back to legacy, this and the ERR_pop_to_mark()
+ * calls can be removed.
+ */
+ ERR_set_mark();
+
+ if (locpctx->keytype == NULL)
+ goto legacy;
+
+ /*
+ * Ensure that the key is provided, either natively, or as a cached export.
+ * If not, go legacy
+ */
+ tmp_keymgmt = locpctx->keymgmt;
+ provkey = evp_pkey_export_to_provider(locpctx->pkey, locpctx->libctx,
+ &tmp_keymgmt, locpctx->propquery);
+ if (provkey == NULL)
+ goto legacy;
+ if (!EVP_KEYMGMT_up_ref(tmp_keymgmt)) {
+ ERR_clear_last_mark();
+ ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
+ goto err;
+ }
+ EVP_KEYMGMT_free(locpctx->keymgmt);
+ locpctx->keymgmt = tmp_keymgmt;
+
+ if (locpctx->keymgmt->query_operation_name != NULL)
+ supported_sig =
+ locpctx->keymgmt->query_operation_name(OSSL_OP_SIGNATURE);
+
+ /*
+ * If we didn't get a supported sig, assume there is one with the
+ * same name as the key type.
+ */
+ if (supported_sig == NULL)
+ supported_sig = locpctx->keytype;
+
+ /*
+ * Because we cleared out old ops, we shouldn't need to worry about
+ * checking if signature is already there.
+ */
+ signature = EVP_SIGNATURE_fetch(locpctx->libctx, supported_sig,
+ locpctx->propquery);
+
+ if (signature == NULL
+ || (EVP_KEYMGMT_provider(locpctx->keymgmt)
+ != EVP_SIGNATURE_provider(signature))) {
+ /*
+ * We don't need to free ctx->keymgmt here, as it's not necessarily
+ * tied to this operation. It will be freed by EVP_PKEY_CTX_free().
+ */
+ EVP_SIGNATURE_free(signature);
+ goto legacy;
+ }
+
+ /*
+ * TODO remove this when legacy is gone
+ * If we don't have the full support we need with provided methods,
+ * let's go see if legacy does.
+ */
+ ERR_pop_to_mark();
+
+ /* No more legacy from here down to legacy: */
+
+ if (pctx != NULL)
+ *pctx = locpctx;
+
+ locpctx->op.sig.signature = signature;
+ locpctx->operation = ver ? EVP_PKEY_OP_VERIFYCTX
+ : EVP_PKEY_OP_SIGNCTX;
+ locpctx->op.sig.sigprovctx
+ = signature->newctx(ossl_provider_ctx(signature->prov));
+ if (locpctx->op.sig.sigprovctx == NULL) {
+ ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
+ goto err;
+ }
+ if (type != NULL) {
+ ctx->reqdigest = type;
+ if (mdname == NULL)
+ mdname = canon_mdname(EVP_MD_name(type));
+ } else {
+ if (mdname == NULL
+ && EVP_PKEY_get_default_digest_name(locpctx->pkey, locmdname,
+ sizeof(locmdname)))
+ mdname = canon_mdname(locmdname);
+
+ if (mdname != NULL) {
+ /*
+ * This might be requested by a later call to EVP_MD_CTX_md().
+ * In that case the "explicit fetch" rules apply for that
+ * function (as per man pages), i.e. the ref count is not updated
+ * so the EVP_MD should not be used beyound the lifetime of the
+ * EVP_MD_CTX.
+ */
+ ctx->reqdigest = ctx->fetched_digest =
+ EVP_MD_fetch(locpctx->libctx, mdname, props);
+ }
+ }
+
+ if (ver) {
+ if (signature->digest_verify_init == NULL) {
+ ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
+ goto err;
+ }
+ ret = signature->digest_verify_init(locpctx->op.sig.sigprovctx,
+ mdname, props, provkey);
+ } else {
+ if (signature->digest_sign_init == NULL) {
+ ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
+ goto err;
+ }
+ ret = signature->digest_sign_init(locpctx->op.sig.sigprovctx,
+ mdname, props, provkey);
+ }
+
+ return ret ? 1 : 0;
+ err:
+ evp_pkey_ctx_free_old_ops(locpctx);
+ locpctx->operation = EVP_PKEY_OP_UNDEFINED;
+ return 0;
+
+ legacy:
+ /*
+ * TODO remove this when legacy is gone
+ * If we don't have the full support we need with provided methods,
+ * let's go see if legacy does.
+ */
+ ERR_pop_to_mark();
+
+ if (ctx->pctx->pmeth == NULL) {
+ EVPerr(0, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+ return 0;
+ }
+
+ if (!(ctx->pctx->pmeth->flags & EVP_PKEY_FLAG_SIGCTX_CUSTOM)) {
+
+ if (type == NULL) {
+ int def_nid;
+ if (EVP_PKEY_get_default_digest_nid(pkey, &def_nid) > 0)
+ type = EVP_get_digestbynid(def_nid);
+ }
+
+ if (type == NULL) {
+ EVPerr(EVP_F_DO_SIGVER_INIT, EVP_R_NO_DEFAULT_DIGEST);
+ return 0;
+ }
+ }
+
+ if (ver) {
+ if (ctx->pctx->pmeth->verifyctx_init) {
+ if (ctx->pctx->pmeth->verifyctx_init(ctx->pctx, ctx) <= 0)
+ return 0;
+ ctx->pctx->operation = EVP_PKEY_OP_VERIFYCTX;
+ } else if (ctx->pctx->pmeth->digestverify != 0) {
+ ctx->pctx->operation = EVP_PKEY_OP_VERIFY;
+ ctx->update = update;
+ } else if (EVP_PKEY_verify_init(ctx->pctx) <= 0) {
+ return 0;
+ }
+ } else {
+ if (ctx->pctx->pmeth->signctx_init) {
+ if (ctx->pctx->pmeth->signctx_init(ctx->pctx, ctx) <= 0)
+ return 0;
+ ctx->pctx->operation = EVP_PKEY_OP_SIGNCTX;
+ } else if (ctx->pctx->pmeth->digestsign != 0) {
+ ctx->pctx->operation = EVP_PKEY_OP_SIGN;
+ ctx->update = update;
+ } else if (EVP_PKEY_sign_init(ctx->pctx) <= 0) {
+ return 0;
+ }
+ }
+ if (EVP_PKEY_CTX_set_signature_md(ctx->pctx, type) <= 0)
+ return 0;
+ if (pctx)
+ *pctx = ctx->pctx;
+ if (ctx->pctx->pmeth->flags & EVP_PKEY_FLAG_SIGCTX_CUSTOM)
+ return 1;
+ if (!EVP_DigestInit_ex(ctx, type, e))
+ return 0;
+ /*
+ * This indicates the current algorithm requires
+ * special treatment before hashing the tbs-message.
+ */
+ if (ctx->pctx->pmeth->digest_custom != NULL)
+ return ctx->pctx->pmeth->digest_custom(ctx->pctx, ctx);
+
+ return 1;
+}
+
+int EVP_DigestSignInit_ex(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx,
+ const char *mdname, const char *props, EVP_PKEY *pkey)
+{
+ return do_sigver_init(ctx, pctx, NULL, mdname, props, NULL, pkey, 0);
+}
int EVP_DigestSignInit(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx,
- const EVP_MD *type, ENGINE *e, EVP_PKEY *pkey)
- {
- return do_sigver_init(ctx, pctx, type, e, pkey, 0);
- }
+ const EVP_MD *type, ENGINE *e, EVP_PKEY *pkey)
+{
+ return do_sigver_init(ctx, pctx, type, NULL, NULL, e, pkey, 0);
+}
+
+int EVP_DigestVerifyInit_ex(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx,
+ const char *mdname, const char *props,
+ EVP_PKEY *pkey)
+{
+ return do_sigver_init(ctx, pctx, NULL, mdname, props, NULL, pkey, 1);
+}
int EVP_DigestVerifyInit(EVP_MD_CTX *ctx, EVP_PKEY_CTX **pctx,
- const EVP_MD *type, ENGINE *e, EVP_PKEY *pkey)
- {
- return do_sigver_init(ctx, pctx, type, e, pkey, 1);
- }
-
-
-int EVP_DigestSignFinal(EVP_MD_CTX *ctx, unsigned char *sigret, size_t *siglen)
- {
- int sctx, r = 0;
- if (ctx->pctx->pmeth->signctx)
- sctx = 1;
- else
- sctx = 0;
- if (sigret)
- {
- MS_STATIC EVP_MD_CTX tmp_ctx;
- unsigned char md[EVP_MAX_MD_SIZE];
- unsigned int mdlen;
- EVP_MD_CTX_init(&tmp_ctx);
- if (!EVP_MD_CTX_copy_ex(&tmp_ctx,ctx))
- return 0;
- if (sctx)
- r = tmp_ctx.pctx->pmeth->signctx(tmp_ctx.pctx,
- sigret, siglen, &tmp_ctx);
- else
- r = EVP_DigestFinal_ex(&tmp_ctx,md,&mdlen);
- EVP_MD_CTX_cleanup(&tmp_ctx);
- if (sctx || !r)
- return r;
- if (EVP_PKEY_sign(ctx->pctx, sigret, siglen, md, mdlen) <= 0)
- return 0;
- }
- else
- {
- if (sctx)
- {
- if (ctx->pctx->pmeth->signctx(ctx->pctx,
- sigret, siglen, ctx) <= 0)
- return 0;
- }
- else if (EVP_PKEY_sign(ctx->pctx, sigret, siglen, NULL,
- EVP_MD_size(ctx->digest)) <= 0)
- return 0;
- }
- return 1;
- }
-
-int EVP_DigestVerifyFinal(EVP_MD_CTX *ctx, unsigned char *sig, size_t siglen)
- {
- MS_STATIC EVP_MD_CTX tmp_ctx;
- unsigned char md[EVP_MAX_MD_SIZE];
- int r;
- unsigned int mdlen;
- int vctx;
- if (ctx->pctx->pmeth->signctx)
- vctx = 1;
- else
- vctx = 0;
- EVP_MD_CTX_init(&tmp_ctx);
- if (!EVP_MD_CTX_copy_ex(&tmp_ctx,ctx))
- return -1;
- if (vctx)
- {
- r = tmp_ctx.pctx->pmeth->verifyctx(tmp_ctx.pctx,
- sig, siglen, &tmp_ctx);
- }
- else
- r = EVP_DigestFinal_ex(&tmp_ctx,md,&mdlen);
- EVP_MD_CTX_cleanup(&tmp_ctx);
- if (vctx || !r)
- return r;
- return EVP_PKEY_verify(ctx->pctx, sig, siglen, md, mdlen);
- }
+ const EVP_MD *type, ENGINE *e, EVP_PKEY *pkey)
+{
+ return do_sigver_init(ctx, pctx, type, NULL, NULL, e, pkey, 1);
+}
+#endif /* FIPS_MDOE */
+
+int EVP_DigestSignUpdate(EVP_MD_CTX *ctx, const void *data, size_t dsize)
+{
+ EVP_PKEY_CTX *pctx = ctx->pctx;
+
+ if (pctx == NULL
+ || pctx->operation != EVP_PKEY_OP_SIGNCTX
+ || pctx->op.sig.sigprovctx == NULL
+ || pctx->op.sig.signature == NULL)
+ goto legacy;
+
+ if (pctx->op.sig.signature->digest_sign_update == NULL) {
+ ERR_raise(ERR_LIB_EVP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+ return 0;
+ }
+
+ return pctx->op.sig.signature->digest_sign_update(pctx->op.sig.sigprovctx,
+ data, dsize);
+
+ legacy:
+ return EVP_DigestUpdate(ctx, data, dsize);
+}
+
+int EVP_DigestVerifyUpdate(EVP_MD_CTX *ctx, const void *data, size_t dsize)
+{
+ EVP_PKEY_CTX *pctx = ctx->pctx;
+
+ if (pctx == NULL
+ || pctx->operation != EVP_PKEY_OP_VERIFYCTX
+ || pctx->op.sig.sigprovctx == NULL
+ || pctx->op.sig.signature == NULL)
+ goto legacy;
+
+ if (pctx->op.sig.signature->digest_verify_update == NULL) {
+ ERR_raise(ERR_LIB_EVP, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
+ return 0;
+ }
+
+ return pctx->op.sig.signature->digest_verify_update(pctx->op.sig.sigprovctx,
+ data, dsize);
+
+ legacy:
+ return EVP_DigestUpdate(ctx, data, dsize);
+}
+
+#ifndef FIPS_MODE
+int EVP_DigestSignFinal(EVP_MD_CTX *ctx, unsigned char *sigret,
+ size_t *siglen)
+{
+ int sctx = 0, r = 0;
+ EVP_PKEY_CTX *pctx = ctx->pctx;
+
+ if (pctx == NULL
+ || pctx->operation != EVP_PKEY_OP_SIGNCTX
+ || pctx->op.sig.sigprovctx == NULL
+ || pctx->op.sig.signature == NULL)
+ goto legacy;
+
+ return pctx->op.sig.signature->digest_sign_final(pctx->op.sig.sigprovctx,
+ sigret, siglen, SIZE_MAX);
+
+ legacy:
+ if (pctx == NULL || pctx->pmeth == NULL) {
+ ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
+ return 0;
+ }
+
+ if (pctx->pmeth->flags & EVP_PKEY_FLAG_SIGCTX_CUSTOM) {
+ if (sigret == NULL)
+ return pctx->pmeth->signctx(pctx, sigret, siglen, ctx);
+ if (ctx->flags & EVP_MD_CTX_FLAG_FINALISE)
+ r = pctx->pmeth->signctx(pctx, sigret, siglen, ctx);
+ else {
+ EVP_PKEY_CTX *dctx = EVP_PKEY_CTX_dup(pctx);
+
+ if (dctx == NULL)
+ return 0;
+ r = dctx->pmeth->signctx(dctx, sigret, siglen, ctx);
+ EVP_PKEY_CTX_free(dctx);
+ }
+ return r;
+ }
+ if (pctx->pmeth->signctx != NULL)
+ sctx = 1;
+ else
+ sctx = 0;
+ if (sigret != NULL) {
+ unsigned char md[EVP_MAX_MD_SIZE];
+ unsigned int mdlen = 0;
+
+ if (ctx->flags & EVP_MD_CTX_FLAG_FINALISE) {
+ if (sctx)
+ r = pctx->pmeth->signctx(pctx, sigret, siglen, ctx);
+ else
+ r = EVP_DigestFinal_ex(ctx, md, &mdlen);
+ } else {
+ EVP_MD_CTX *tmp_ctx = EVP_MD_CTX_new();
+
+ if (tmp_ctx == NULL)
+ return 0;
+ if (!EVP_MD_CTX_copy_ex(tmp_ctx, ctx)) {
+ EVP_MD_CTX_free(tmp_ctx);
+ return 0;
+ }
+ if (sctx)
+ r = tmp_ctx->pctx->pmeth->signctx(tmp_ctx->pctx,
+ sigret, siglen, tmp_ctx);
+ else
+ r = EVP_DigestFinal_ex(tmp_ctx, md, &mdlen);
+ EVP_MD_CTX_free(tmp_ctx);
+ }
+ if (sctx || !r)
+ return r;
+ if (EVP_PKEY_sign(pctx, sigret, siglen, md, mdlen) <= 0)
+ return 0;
+ } else {
+ if (sctx) {
+ if (pctx->pmeth->signctx(pctx, sigret, siglen, ctx) <= 0)
+ return 0;
+ } else {
+ int s = EVP_MD_size(ctx->digest);
+
+ if (s < 0 || EVP_PKEY_sign(pctx, sigret, siglen, NULL, s) <= 0)
+ return 0;
+ }
+ }
+ return 1;
+}
+
+int EVP_DigestSign(EVP_MD_CTX *ctx, unsigned char *sigret, size_t *siglen,
+ const unsigned char *tbs, size_t tbslen)
+{
+ EVP_PKEY_CTX *pctx = ctx->pctx;
+
+ if (pctx != NULL
+ && pctx->operation == EVP_PKEY_OP_SIGNCTX
+ && pctx->op.sig.sigprovctx != NULL
+ && pctx->op.sig.signature != NULL) {
+ if (pctx->op.sig.signature->digest_sign != NULL)
+ return pctx->op.sig.signature->digest_sign(pctx->op.sig.sigprovctx,
+ sigret, siglen, SIZE_MAX,
+ tbs, tbslen);
+ } else {
+ /* legacy */
+ if (ctx->pctx->pmeth != NULL && ctx->pctx->pmeth->digestsign != NULL)
+ return ctx->pctx->pmeth->digestsign(ctx, sigret, siglen, tbs, tbslen);
+ }
+
+ if (sigret != NULL && EVP_DigestSignUpdate(ctx, tbs, tbslen) <= 0)
+ return 0;
+ return EVP_DigestSignFinal(ctx, sigret, siglen);
+}
+
+int EVP_DigestVerifyFinal(EVP_MD_CTX *ctx, const unsigned char *sig,
+ size_t siglen)
+{
+ unsigned char md[EVP_MAX_MD_SIZE];
+ int r = 0;
+ unsigned int mdlen = 0;
+ int vctx = 0;
+ EVP_PKEY_CTX *pctx = ctx->pctx;
+
+ if (pctx == NULL
+ || pctx->operation != EVP_PKEY_OP_VERIFYCTX
+ || pctx->op.sig.sigprovctx == NULL
+ || pctx->op.sig.signature == NULL)
+ goto legacy;
+
+ return pctx->op.sig.signature->digest_verify_final(pctx->op.sig.sigprovctx,
+ sig, siglen);
+
+ legacy:
+ if (pctx == NULL || pctx->pmeth == NULL) {
+ ERR_raise(ERR_LIB_EVP, EVP_R_INITIALIZATION_ERROR);
+ return 0;
+ }
+
+ if (pctx->pmeth->verifyctx != NULL)
+ vctx = 1;
+ else
+ vctx = 0;
+ if (ctx->flags & EVP_MD_CTX_FLAG_FINALISE) {
+ if (vctx)
+ r = pctx->pmeth->verifyctx(pctx, sig, siglen, ctx);
+ else
+ r = EVP_DigestFinal_ex(ctx, md, &mdlen);
+ } else {
+ EVP_MD_CTX *tmp_ctx = EVP_MD_CTX_new();
+ if (tmp_ctx == NULL)
+ return -1;
+ if (!EVP_MD_CTX_copy_ex(tmp_ctx, ctx)) {
+ EVP_MD_CTX_free(tmp_ctx);
+ return -1;
+ }
+ if (vctx)
+ r = tmp_ctx->pctx->pmeth->verifyctx(tmp_ctx->pctx,
+ sig, siglen, tmp_ctx);
+ else
+ r = EVP_DigestFinal_ex(tmp_ctx, md, &mdlen);
+ EVP_MD_CTX_free(tmp_ctx);
+ }
+ if (vctx || !r)
+ return r;
+ return EVP_PKEY_verify(pctx, sig, siglen, md, mdlen);
+}
+
+int EVP_DigestVerify(EVP_MD_CTX *ctx, const unsigned char *sigret,
+ size_t siglen, const unsigned char *tbs, size_t tbslen)
+{
+ EVP_PKEY_CTX *pctx = ctx->pctx;
+
+ if (pctx != NULL
+ && pctx->operation == EVP_PKEY_OP_VERIFYCTX
+ && pctx->op.sig.sigprovctx != NULL
+ && pctx->op.sig.signature != NULL) {
+ if (pctx->op.sig.signature->digest_verify != NULL)
+ return pctx->op.sig.signature->digest_verify(pctx->op.sig.sigprovctx,
+ sigret, siglen,
+ tbs, tbslen);
+ } else {
+ /* legacy */
+ if (ctx->pctx->pmeth != NULL && ctx->pctx->pmeth->digestverify != NULL)
+ return ctx->pctx->pmeth->digestverify(ctx, sigret, siglen, tbs, tbslen);
+ }
+
+ if (EVP_DigestVerifyUpdate(ctx, tbs, tbslen) <= 0)
+ return -1;
+ return EVP_DigestVerifyFinal(ctx, sigret, siglen);
+}
+#endif /* FIPS_MODE */
projects / openssl.git / blobdiff