/***************************************************************************
                          smartCard.cpp  -  description
                             -------------------
    begin                : vie sep 24 2004
    copyright            : (C) 2004 by Antonio Araujo, 
                                       Victor Bravo
                                       Jorge Redondo
  
    email                : antonioaraujo@funmrd.gov.ve
                           victorb@funmrd.gov.ve
			   redondo@funmrd.gov.ve
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/
 
 
#include "smartCardFunc.h" 
 


// convierte el formato biginteger_t PKCS#11 a BIGNUM OpenSSL
// "to" deberia ser la direccion de un puntero inicializado en NULL para
// recibir el BIGNUM. por ejemplo:
//	biginteger_t	from;
// 	BIGNUM	*foo = NULL;
//	cvt_bigint2bn(&from, &foo);

//static 
int cvt_bigint2bn(biginteger_t *from, BIGNUM **to)
{
	BIGNUM	*temp = NULL;
	printf("\n");
	printf("inside cvt_bigint2bn\n");

	int i;
	printf("modulus: ");
	for (i=0; i < (int)from->big_value_len; i++) 
	{
		printf("%02X ", from->big_value[i]);		
	}
	printf("\n");
	
	
	if (from == NULL || to == NULL)
		return (-1);
		
	printf("\ncalling BN_bin2bn\n");
	temp = BN_bin2bn((const unsigned char *)from->big_value, (int)from->big_value_len, *to);
	
	//printf("verifica if (temp == NULL)\n");
	if (temp == NULL)
	{
		printf("temp == NULL\n");	
		return (-1);
	}
	*to = temp;
	return (0);
}

// funcion para copiar una plantilla de atributos a un biginteger_t
void copy_attr_to_bigint(CK_ATTRIBUTE_PTR attr, biginteger_t *big)
{
	printf("copy_attr_to_bigint\n");
	
	big->big_value = (CK_BYTE *) attr->pValue;
	printf("big->big_value = (CK_BYTE *) attr->pValue\n");
	
	big->big_value_len = (CK_ULONG) attr->ulValueLen;
	printf("big->big_value_len = (CK_ULONG) attr->ulValueLen\n");
}