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- /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
- *
- * This package is an SSL implementation written
- * by Eric Young (eay@cryptsoft.com).
- * The implementation was written so as to conform with Netscapes SSL.
- *
- * This library is free for commercial and non-commercial use as long as
- * the following conditions are aheared to. The following conditions
- * apply to all code found in this distribution, be it the RC4, RSA,
- * lhash, DES, etc., code; not just the SSL code. The SSL documentation
- * included with this distribution is covered by the same copyright terms
- * except that the holder is Tim Hudson (tjh@cryptsoft.com).
- *
- * Copyright remains Eric Young's, and as such any Copyright notices in
- * the code are not to be removed.
- * If this package is used in a product, Eric Young should be given attribution
- * as the author of the parts of the library used.
- * This can be in the form of a textual message at program startup or
- * in documentation (online or textual) provided with the package.
- *
- * 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 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 acknowledgement:
- * "This product includes cryptographic software written by
- * Eric Young (eay@cryptsoft.com)"
- * The word 'cryptographic' can be left out if the rouines from the library
- * being used are not cryptographic related :-).
- * 4. If you include any Windows specific code (or a derivative thereof) from
- * the apps directory (application code) you must include an acknowledgement:
- * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
- *
- * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
- * ANY EXPRESS 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 AUTHOR OR 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.
- *
- * The licence and distribution terms for any publically available version or
- * derivative of this code cannot be changed. i.e. this code cannot simply be
- * copied and put under another distribution licence
- * [including the GNU Public Licence.] */
-
- #include <openssl/evp.h>
-
- #include <assert.h>
-
- #include <openssl/asn1.h>
- #include <openssl/err.h>
- #include <openssl/obj.h>
- #include <openssl/x509.h>
-
- #include "internal.h"
-
-
- int EVP_DigestSignAlgorithm(EVP_MD_CTX *ctx, X509_ALGOR *algor) {
- const EVP_MD *digest;
- EVP_PKEY *pkey;
- int sign_nid, paramtype;
-
- digest = EVP_MD_CTX_md(ctx);
- pkey = EVP_PKEY_CTX_get0_pkey(ctx->pctx);
- if (!digest || !pkey) {
- OPENSSL_PUT_ERROR(EVP, EVP_R_CONTEXT_NOT_INITIALISED);
- return 0;
- }
-
- if (pkey->ameth->digest_sign_algorithm) {
- switch (pkey->ameth->digest_sign_algorithm(ctx, algor)) {
- case EVP_DIGEST_SIGN_ALGORITHM_ERROR:
- return 0;
- case EVP_DIGEST_SIGN_ALGORITHM_SUCCESS:
- return 1;
- case EVP_DIGEST_SIGN_ALGORITHM_DEFAULT:
- /* Use default behavior. */
- break;
- default:
- assert(0);
- }
- }
-
- /* Default behavior: look up the OID for the algorithm/hash pair and encode
- * that. */
- if (!OBJ_find_sigid_by_algs(&sign_nid, EVP_MD_type(digest),
- pkey->ameth->pkey_id)) {
- OPENSSL_PUT_ERROR(EVP, EVP_R_DIGEST_AND_KEY_TYPE_NOT_SUPPORTED);
- return 0;
- }
-
- if (pkey->ameth->pkey_flags & ASN1_PKEY_SIGPARAM_NULL) {
- paramtype = V_ASN1_NULL;
- } else {
- paramtype = V_ASN1_UNDEF;
- }
-
- X509_ALGOR_set0(algor, OBJ_nid2obj(sign_nid), paramtype, NULL);
- return 1;
- }
-
- int EVP_DigestVerifyInitFromAlgorithm(EVP_MD_CTX *ctx,
- X509_ALGOR *algor,
- EVP_PKEY *pkey) {
- int digest_nid, pkey_nid;
- const EVP_PKEY_ASN1_METHOD *ameth;
- const EVP_MD *digest;
-
- /* Convert signature OID into digest and public key OIDs */
- if (!OBJ_find_sigid_algs(OBJ_obj2nid(algor->algorithm), &digest_nid,
- &pkey_nid)) {
- OPENSSL_PUT_ERROR(EVP, EVP_R_UNKNOWN_SIGNATURE_ALGORITHM);
- return 0;
- }
-
- /* Check public key OID matches public key type */
- ameth = EVP_PKEY_asn1_find(NULL, pkey_nid);
- if (ameth == NULL || ameth->pkey_id != pkey->ameth->pkey_id) {
- OPENSSL_PUT_ERROR(EVP, EVP_R_WRONG_PUBLIC_KEY_TYPE);
- return 0;
- }
-
- /* NID_undef signals that there are custom parameters to set. */
- if (digest_nid == NID_undef) {
- if (!pkey->ameth || !pkey->ameth->digest_verify_init_from_algorithm) {
- OPENSSL_PUT_ERROR(EVP, EVP_R_UNKNOWN_SIGNATURE_ALGORITHM);
- return 0;
- }
-
- return pkey->ameth->digest_verify_init_from_algorithm(ctx, algor, pkey);
- }
-
- /* Otherwise, initialize with the digest from the OID. */
- digest = EVP_get_digestbynid(digest_nid);
- if (digest == NULL) {
- OPENSSL_PUT_ERROR(EVP, EVP_R_UNKNOWN_MESSAGE_DIGEST_ALGORITHM);
- return 0;
- }
-
- return EVP_DigestVerifyInit(ctx, NULL, digest, NULL, pkey);
- }
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