/* Livebox H235 to Unlock key converter
 * (C) 2004 Evariste Hardy
 *
 * 1. Get a shell on Livebox (there are dozen of flaws to do that)
 * 2. Use "redboot_fconfig_get --parameter h235_key /dev/mtd4" to get your
 * H235 key
 * 3. Use this tool to get your unlock key
 * 4. Use the unlock key in http://configuration.adsl/brdgoff.html
 */

#include <string.h>
#include <stdlib.h>
#include <stdio.h>

char unlock[17];

int
main (int argc, char *argv[])
{
  printf
    ("\nLivebox H235 to unlock key converter\n(C) 2004 Evariste Hardy\n\n");

  if (argc != 2 || (strlen (argv[1]) != 16))
    {
      printf ("Use %s H235KEY\nH235 key is 16 chars large\n", argv[0]);
      exit (1);
    }

  unlock[1] = argv[1][4];
  unlock[0] = argv[1][9];
  unlock[2] = argv[1][1];
  unlock[3] = argv[1][12];
  unlock[4] = argv[1][14];
  unlock[5] = argv[1][5];
  unlock[6] = argv[1][13];
  unlock[7] = argv[1][6];
  unlock[8] = argv[1][15];
  unlock[9] = argv[1][3];
  unlock[10] = argv[1][8];
  unlock[11] = argv[1][0];
  unlock[12] = argv[1][7];
  unlock[13] = argv[1][10];
  unlock[14] = argv[1][2];
  unlock[15] = argv[1][11];

  printf ("Your unlock key is %s\n", unlock);

  return 0;
}