/* 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 x509_digest_sign_algorithm(EVP_MD_CTX *ctx, X509_ALGOR *algor) { EVP_PKEY *pkey = EVP_PKEY_CTX_get0_pkey(ctx->pctx); if (pkey == NULL) { OPENSSL_PUT_ERROR(ASN1, ASN1_R_CONTEXT_NOT_INITIALISED); return 0; } if (EVP_PKEY_id(pkey) == EVP_PKEY_RSA) { int pad_mode; if (!EVP_PKEY_CTX_get_rsa_padding(ctx->pctx, &pad_mode)) { return 0; } /* RSA-PSS has special signature algorithm logic. */ if (pad_mode == RSA_PKCS1_PSS_PADDING) { return x509_rsa_ctx_to_pss(ctx, algor); } } if (EVP_PKEY_id(pkey) == EVP_PKEY_ED25519) { return X509_ALGOR_set0(algor, OBJ_nid2obj(NID_ED25519), V_ASN1_UNDEF, NULL); } /* Default behavior: look up the OID for the algorithm/hash pair and encode * that. */ const EVP_MD *digest = EVP_MD_CTX_md(ctx); if (digest == NULL) { OPENSSL_PUT_ERROR(ASN1, ASN1_R_CONTEXT_NOT_INITIALISED); return 0; } int sign_nid; if (!OBJ_find_sigid_by_algs(&sign_nid, EVP_MD_type(digest), EVP_PKEY_id(pkey))) { OPENSSL_PUT_ERROR(ASN1, ASN1_R_DIGEST_AND_KEY_TYPE_NOT_SUPPORTED); return 0; } /* RSA signature algorithms include an explicit NULL parameter. Others omit * it. */ int paramtype = (EVP_PKEY_id(pkey) == EVP_PKEY_RSA) ? V_ASN1_NULL : V_ASN1_UNDEF; X509_ALGOR_set0(algor, OBJ_nid2obj(sign_nid), paramtype, NULL); return 1; } int x509_digest_verify_init(EVP_MD_CTX *ctx, X509_ALGOR *sigalg, EVP_PKEY *pkey) { /* Convert the signature OID into digest and public key OIDs. */ int sigalg_nid = OBJ_obj2nid(sigalg->algorithm); int digest_nid, pkey_nid; if (!OBJ_find_sigid_algs(sigalg_nid, &digest_nid, &pkey_nid)) { OPENSSL_PUT_ERROR(ASN1, ASN1_R_UNKNOWN_SIGNATURE_ALGORITHM); return 0; } /* Check the public key OID matches the public key type. */ if (pkey_nid != EVP_PKEY_id(pkey)) { OPENSSL_PUT_ERROR(ASN1, ASN1_R_WRONG_PUBLIC_KEY_TYPE); return 0; } /* NID_undef signals that there are custom parameters to set. */ if (digest_nid == NID_undef) { if (sigalg_nid == NID_rsassaPss) { return x509_rsa_pss_to_ctx(ctx, sigalg, pkey); } if (sigalg_nid == NID_ED25519) { if (sigalg->parameter != NULL) { OPENSSL_PUT_ERROR(X509, X509_R_INVALID_PARAMETER); return 0; } return EVP_DigestVerifyInit(ctx, NULL, NULL, NULL, pkey); } OPENSSL_PUT_ERROR(ASN1, ASN1_R_UNKNOWN_SIGNATURE_ALGORITHM); return 0; } /* RSA signature algorithms include an explicit NULL parameter but we also * accept omitted values for compatibility. Other algorithms must omit it. */ if (sigalg->parameter != NULL && (pkey_nid != EVP_PKEY_RSA || sigalg->parameter->type != V_ASN1_NULL)) { OPENSSL_PUT_ERROR(X509, X509_R_INVALID_PARAMETER); return 0; } /* Otherwise, initialize with the digest from the OID. */ const EVP_MD *digest = EVP_get_digestbynid(digest_nid); if (digest == NULL) { OPENSSL_PUT_ERROR(ASN1, ASN1_R_UNKNOWN_MESSAGE_DIGEST_ALGORITHM); return 0; } return EVP_DigestVerifyInit(ctx, NULL, digest, NULL, pkey); }