X-Git-Url: https://git.openssl.org/?a=blobdiff_plain;f=crypto%2Fevp%2Fp_verify.c;h=956b089572db3595ef61b212ccd58b23ee517520;hb=5cae2d349b561a84dbfc93d6b6abc5fb7263fb7c;hp=8db46412f3771720b9afde5faa46a4dcfc133dc9;hpb=ee1d9ec019a7584482bd95891404f1cad66a4a0a;p=openssl.git diff --git a/crypto/evp/p_verify.c b/crypto/evp/p_verify.c index 8db46412f3..956b089572 100644 --- a/crypto/evp/p_verify.c +++ b/crypto/evp/p_verify.c @@ -1,119 +1,55 @@ -/* crypto/evp/p_verify.c */ -/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) - * All rights reserved. +/* + * Copyright 1995-2016 The OpenSSL Project Authors. 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.] + * 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 -#include "cryptlib.h" +#include "internal/cryptlib.h" #include #include #include +#include "internal/evp_int.h" int EVP_VerifyFinal(EVP_MD_CTX *ctx, const unsigned char *sigbuf, - unsigned int siglen, EVP_PKEY *pkey) - { - unsigned char m[EVP_MAX_MD_SIZE]; - unsigned int m_len; - int i,ok=0,v; - MS_STATIC EVP_MD_CTX tmp_ctx; + unsigned int siglen, EVP_PKEY *pkey) +{ + unsigned char m[EVP_MAX_MD_SIZE]; + unsigned int m_len = 0; + int i = 0; + EVP_PKEY_CTX *pkctx = NULL; - EVP_MD_CTX_init(&tmp_ctx); - EVP_MD_CTX_copy_ex(&tmp_ctx,ctx); - EVP_DigestFinal_ex(&tmp_ctx,&(m[0]),&m_len); - EVP_MD_CTX_cleanup(&tmp_ctx); - - if (ctx->digest->flags & EVP_MD_FLAG_PKEY_METHOD_SIGNATURE) - { - EVP_PKEY_CTX *pkctx = NULL; - i = -1; - pkctx = EVP_PKEY_CTX_new(pkey, NULL); - if (!pkctx) - goto err; - if (EVP_PKEY_verify_init(pkctx) <= 0) - goto err; - if (EVP_PKEY_CTX_set_signature_md(pkctx, ctx->digest) <= 0) - goto err; - i = EVP_PKEY_verify(pkctx, sigbuf, siglen, m, m_len); - err: - EVP_PKEY_CTX_free(pkctx); - return i; - } - - for (i=0; i<4; i++) - { - v=ctx->digest->required_pkey_type[i]; - if (v == 0) break; - if (pkey->type == v) - { - ok=1; - break; - } - } - if (!ok) - { - EVPerr(EVP_F_EVP_VERIFYFINAL,EVP_R_WRONG_PUBLIC_KEY_TYPE); - return(-1); - } - if (ctx->digest->verify == NULL) - { - EVPerr(EVP_F_EVP_VERIFYFINAL,EVP_R_NO_VERIFY_FUNCTION_CONFIGURED); - return(0); - } - - return(ctx->digest->verify(ctx->digest->type,m,m_len, - sigbuf,siglen,pkey->pkey.ptr)); - } + if (EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_FINALISE)) { + if (!EVP_DigestFinal_ex(ctx, m, &m_len)) + goto err; + } else { + int rv = 0; + EVP_MD_CTX *tmp_ctx = EVP_MD_CTX_new(); + if (tmp_ctx == NULL) { + EVPerr(EVP_F_EVP_VERIFYFINAL, ERR_R_MALLOC_FAILURE); + return 0; + } + rv = EVP_MD_CTX_copy_ex(tmp_ctx, ctx); + if (rv) + rv = EVP_DigestFinal_ex(tmp_ctx, m, &m_len); + EVP_MD_CTX_free(tmp_ctx); + if (!rv) + return 0; + } + i = -1; + pkctx = EVP_PKEY_CTX_new(pkey, NULL); + if (pkctx == NULL) + goto err; + if (EVP_PKEY_verify_init(pkctx) <= 0) + goto err; + if (EVP_PKEY_CTX_set_signature_md(pkctx, EVP_MD_CTX_md(ctx)) <= 0) + goto err; + i = EVP_PKEY_verify(pkctx, sigbuf, siglen, m, m_len); + err: + EVP_PKEY_CTX_free(pkctx); + return i; +}