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Diffstat (limited to 'openssl/crypto/evp/p_verify.c')
| -rw-r--r-- | openssl/crypto/evp/p_verify.c | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/openssl/crypto/evp/p_verify.c b/openssl/crypto/evp/p_verify.c new file mode 100644 index 000000000..2d46dffe7 --- /dev/null +++ b/openssl/crypto/evp/p_verify.c @@ -0,0 +1,113 @@ +/* crypto/evp/p_verify.c */ +/* 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 <stdio.h> +#include "cryptlib.h" +#include <openssl/evp.h> +#include <openssl/objects.h> +#include <openssl/x509.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; + + 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); + } + + EVP_MD_CTX_init(&tmp_ctx); + EVP_MD_CTX_copy_ex(&tmp_ctx,ctx); + if (ctx->digest->flags & EVP_MD_FLAG_SVCTX) + { + EVP_MD_SVCTX sctmp; + sctmp.mctx = &tmp_ctx; + sctmp.key = pkey->pkey.ptr; + i = ctx->digest->verify(ctx->digest->type, + NULL, -1, sigbuf, siglen, &sctmp); + } + else + { + EVP_DigestFinal_ex(&tmp_ctx,&(m[0]),&m_len); + i = ctx->digest->verify(ctx->digest->type,m,m_len, + sigbuf,siglen,pkey->pkey.ptr); + } + EVP_MD_CTX_cleanup(&tmp_ctx); + return i; + } + |