/* crypto/evp/p_lib.c */
/* Copyright (C) 1995-1996 Eric Young (eay@mincom.oz.au)
 * All rights reserved.
 * 
 * This file is part of an SSL implementation written
 * by Eric Young (eay@mincom.oz.au).
 * The implementation was written so as to conform with Netscapes SSL
 * specification.  This library and applications are
 * FREE FOR COMMERCIAL AND NON-COMMERCIAL USE
 * as long as the following conditions are aheared to.
 * 
 * Copyright remains Eric Young's, and as such any Copyright notices in
 * the code are not to be removed.  If this code is used in a product,
 * Eric Young should be given attribution as the author of the parts 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 software developed by Eric Young (eay@mincom.oz.au)
 * 
 * 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 "objects.h"
#include "envelope.h"
#include "asn1_mac.h"
#include "x509.h"

/* EVPerr(EVP_F_D2I_PKEY,EVP_R_UNSUPORTED_CIPHER); */
/* EVPerr(EVP_F_D2I_PKEY,EVP_R_IV_TOO_LARGE); */

int EVP_PKEY_size(pkey)
EVP_PKEY *pkey;
	{
	if (pkey->type == EVP_PKEY_RSA)
		return(RSA_size(pkey->pkey.rsa));
	else if (pkey->type == EVP_PKEY_DSA)
		return(DSA_size(pkey->pkey.dsa));
	return(0);
	}

EVP_PKEY *EVP_PKEY_new()
	{
	EVP_PKEY *ret;

	ret=(EVP_PKEY *)Malloc(sizeof(EVP_PKEY));
	if (ret == NULL)
		{
		EVPerr(EVP_F_EVP_PKEY_NEW,ERR_R_MALLOC_FAILURE);
		return(NULL);
		}
	ret->type=EVP_PKEY_NONE;
	ret->references=1;
	ret->pkey.ptr=NULL;
	ret->attributes=NULL;
	return(ret);
	}

void EVP_PKEY_free(x)
EVP_PKEY *x;
	{
	int i;

	if (x == NULL) return;

	i=CRYPTO_add(&x->references,-1,CRYPTO_LOCK_EVP_PKEY);
	if (i > 0) return;
#ifdef REF_CHECK
	if (i < 0)
		{
		fprintf(stderr,"EVP_PKEY_free, bad reference count\n");
		abort();
		}
#endif

	switch (x->type)
		{
	case EVP_PKEY_RSA:
	case EVP_PKEY_RSA2:
		RSA_free(x->pkey.rsa);
		break;
	case EVP_PKEY_DSA:
	case EVP_PKEY_DSA2:
	case EVP_PKEY_DSA3:
		DSA_free(x->pkey.dsa);
		break;
	case EVP_PKEY_DH:
		DH_free(x->pkey.dh);
		break;
		}
	Free((char *)x);
	}
