/* 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 undefvoid 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);	}#endifint 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;	}