source: terepaima/terepaima-0.4.16/sources/smartCardFunc.cpp

/***************************************************************************
                          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");
}