/* 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 #include #include #include #include #include #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_DigestSignAlgorithm, 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_DigestSignAlgorithm, 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_DigestVerifyInitFromAlgorithm, 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_DigestVerifyInitFromAlgorithm, 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_DigestVerifyInitFromAlgorithm, 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_DigestVerifyInitFromAlgorithm, EVP_R_UNKNOWN_MESSAGE_DIGEST_ALGORITHM); return 0; } return EVP_DigestVerifyInit(ctx, NULL, digest, NULL, pkey); }