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153 lines
6 KiB
C
153 lines
6 KiB
C
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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* All rights reserved.
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*
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* This package is an SSL implementation written
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* by Eric Young (eay@cryptsoft.com).
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* The implementation was written so as to conform with Netscapes SSL.
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*
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* This library is free for commercial and non-commercial use as long as
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* the following conditions are aheared to. The following conditions
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* apply to all code found in this distribution, be it the RC4, RSA,
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation
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* included with this distribution is covered by the same copyright terms
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* except that the holder is Tim Hudson (tjh@cryptsoft.com).
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*
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* Copyright remains Eric Young's, and as such any Copyright notices in
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* the code are not to be removed.
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* If this package is used in a product, Eric Young should be given attribution
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* as the author of the parts of the library used.
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* This can be in the form of a textual message at program startup or
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* in documentation (online or textual) provided with the package.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* "This product includes cryptographic software written by
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* Eric Young (eay@cryptsoft.com)"
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* The word 'cryptographic' can be left out if the rouines from the library
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* being used are not cryptographic related :-).
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* 4. If you include any Windows specific code (or a derivative thereof) from
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* the apps directory (application code) you must include an acknowledgement:
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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*
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* The licence and distribution terms for any publically available version or
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* derivative of this code cannot be changed. i.e. this code cannot simply be
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* copied and put under another distribution licence
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* [including the GNU Public Licence.] */
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#include <openssl/x509.h>
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#include <openssl/asn1.h>
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#include <openssl/digest.h>
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#include <openssl/err.h>
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#include <openssl/evp.h>
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#include <openssl/obj.h>
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#include "internal.h"
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int x509_digest_sign_algorithm(EVP_MD_CTX *ctx, X509_ALGOR *algor) {
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EVP_PKEY *pkey = EVP_PKEY_CTX_get0_pkey(ctx->pctx);
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if (pkey == NULL) {
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OPENSSL_PUT_ERROR(ASN1, ASN1_R_CONTEXT_NOT_INITIALISED);
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return 0;
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}
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if (EVP_PKEY_id(pkey) == EVP_PKEY_RSA) {
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int pad_mode;
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if (!EVP_PKEY_CTX_get_rsa_padding(ctx->pctx, &pad_mode)) {
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return 0;
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}
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/* RSA-PSS has special signature algorithm logic. */
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if (pad_mode == RSA_PKCS1_PSS_PADDING) {
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return x509_rsa_ctx_to_pss(ctx, algor);
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}
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}
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if (EVP_PKEY_id(pkey) == EVP_PKEY_ED25519) {
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return X509_ALGOR_set0(algor, OBJ_nid2obj(NID_ED25519), V_ASN1_UNDEF, NULL);
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}
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/* Default behavior: look up the OID for the algorithm/hash pair and encode
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* that. */
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const EVP_MD *digest = EVP_MD_CTX_md(ctx);
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if (digest == NULL) {
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OPENSSL_PUT_ERROR(ASN1, ASN1_R_CONTEXT_NOT_INITIALISED);
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return 0;
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}
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int sign_nid;
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if (!OBJ_find_sigid_by_algs(&sign_nid, EVP_MD_type(digest),
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EVP_PKEY_id(pkey))) {
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OPENSSL_PUT_ERROR(ASN1, ASN1_R_DIGEST_AND_KEY_TYPE_NOT_SUPPORTED);
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return 0;
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}
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/* RSA signature algorithms include an explicit NULL parameter. Others omit
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* it. */
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int paramtype =
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(EVP_PKEY_id(pkey) == EVP_PKEY_RSA) ? V_ASN1_NULL : V_ASN1_UNDEF;
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X509_ALGOR_set0(algor, OBJ_nid2obj(sign_nid), paramtype, NULL);
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return 1;
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}
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int x509_digest_verify_init(EVP_MD_CTX *ctx, X509_ALGOR *sigalg,
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EVP_PKEY *pkey) {
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/* Convert the signature OID into digest and public key OIDs. */
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int sigalg_nid = OBJ_obj2nid(sigalg->algorithm);
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int digest_nid, pkey_nid;
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if (!OBJ_find_sigid_algs(sigalg_nid, &digest_nid, &pkey_nid)) {
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OPENSSL_PUT_ERROR(ASN1, ASN1_R_UNKNOWN_SIGNATURE_ALGORITHM);
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return 0;
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}
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/* Check the public key OID matches the public key type. */
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if (pkey_nid != EVP_PKEY_id(pkey)) {
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OPENSSL_PUT_ERROR(ASN1, ASN1_R_WRONG_PUBLIC_KEY_TYPE);
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return 0;
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}
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/* NID_undef signals that there are custom parameters to set. */
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if (digest_nid == NID_undef) {
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if (sigalg_nid == NID_rsassaPss) {
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return x509_rsa_pss_to_ctx(ctx, sigalg, pkey);
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}
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if (sigalg_nid == NID_ED25519) {
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if (sigalg->parameter != NULL) {
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OPENSSL_PUT_ERROR(X509, X509_R_INVALID_PARAMETER);
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return 0;
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}
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return EVP_DigestVerifyInit(ctx, NULL, NULL, NULL, pkey);
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}
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OPENSSL_PUT_ERROR(ASN1, ASN1_R_UNKNOWN_SIGNATURE_ALGORITHM);
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return 0;
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}
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/* Otherwise, initialize with the digest from the OID. */
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const EVP_MD *digest = EVP_get_digestbynid(digest_nid);
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if (digest == NULL) {
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OPENSSL_PUT_ERROR(ASN1, ASN1_R_UNKNOWN_MESSAGE_DIGEST_ALGORITHM);
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return 0;
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}
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return EVP_DigestVerifyInit(ctx, NULL, digest, NULL, pkey);
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}
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