/*

 * Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies).

 * All rights reserved.

 * This component and the accompanying materials are made available

 * under the terms of the License "Eclipse Public License v1.0"

 * which accompanies this distribution, and is available

 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

 *

 * Initial Contributors:

 * Nokia Corporation - initial contribution.

 *

 * Contributors:

 *

 * Description: 

 * Generates C code that initialises a variable to hold some random data.

 *

 */

 /**

  @file

 */

 #include <openssl/rand.h>

 static void gen_random(int len)

     {

     unsigned char data[len];

     int i, j;

     RAND_bytes(data, len);

     printf("unsigned char random[] =");

     for (i = 0 ; i < sizeof(data) ; i += 16)

         {

         printf("\n\t\"");

         for (j = i ; j < sizeof(data) && j < (i + 16) ; ++j)

             {

             printf("\\x%02x", data[j]);

             }

         printf("\"");

         }

     printf(";\n");

     }

 static void badUsage()

     {

     printf("gen_random [BYTES]\n");

     exit(1);

     }

 int main(int argc, char* argv[])

     {

     int bytes = 256;

     if (argc > 2)

         badUsage();

     else if (argc == 2)

         {

         bytes = atoi(argv[1]);

         if (bytes < 1)

             badUsage();

         }

     gen_random(bytes);

     return 0;

     }