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/* crypto/evp/p_sign.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>
#ifdef undef
void EVP_SignInit(EVP_MD_CTX *ctx, EVP_MD *type)
{
EVP_DigestInit_ex(ctx,type);
}
void EVP_SignUpdate(EVP_MD_CTX *ctx, unsigned char *data,
unsigned int count)
{
EVP_DigestUpdate(ctx,data,count);
}
#endif
int EVP_SignFinal(EVP_MD_CTX *ctx, unsigned char *sigret, 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;
*siglen=0;
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_SIGNFINAL,EVP_R_WRONG_PUBLIC_KEY_TYPE);
return(0);
}
if (ctx->digest->sign == NULL)
{
EVPerr(EVP_F_EVP_SIGNFINAL,EVP_R_NO_SIGN_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->sign(ctx->digest->type,
NULL, -1, sigret, siglen, &sctmp);
}
else
{
EVP_DigestFinal_ex(&tmp_ctx,&(m[0]),&m_len);
i = ctx->digest->sign(ctx->digest->type,m,m_len,sigret,siglen,
pkey->pkey.ptr);
}
EVP_MD_CTX_cleanup(&tmp_ctx);
return i;
}
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