tests/test-arcfour.c

   1 /*
   2  * Copyright (C) 2005, 2010-2017 Free Software Foundation, Inc.
   3  * Written by Simon Josefsson
   4  *
   5  * This program is free software: you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 3 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  17
  18 #include <config.h>
  19
  20 #include <stdio.h>
  21 #include <string.h>
  22 #include "arcfour.h"
  23
  24 int
  25 main (int argc, char *argv[])
  26 {
  27   arcfour_context ctx;
  28   /* Test vector from Cryptlib via Libgcrypt labeled there: "from the
  29      State/Commerce Department". */
  30   static char key_1[] = { 0x61, 0x8A, 0x63, 0xD2, 0xFB };
  31   static char plaintext_1[] = { 0xDC, 0xEE, 0x4C, 0xF9, 0x2C };
  32   static const char ciphertext_1[] = { 0xF1, 0x38, 0x29, 0xC9, 0xDE };
  33   char scratch[16];
  34
  35   arcfour_setkey (&ctx, key_1, sizeof (key_1));
  36   arcfour_stream (&ctx, plaintext_1, scratch, sizeof (plaintext_1));
  37   if (memcmp (scratch, ciphertext_1, sizeof (ciphertext_1)))
  38     {
  39       size_t i;
  40       printf ("expected:\n");
  41       for (i = 0; i < 5; i++)
  42         printf ("%02x ", scratch[i] & 0xFF);
  43       printf ("\ncomputed:\n");
  44       for (i = 0; i < 5; i++)
  45         printf ("%02x ", ciphertext_1[i] & 0xFF);
  46       printf ("\n");
  47       return 1;
  48     }
  49
  50   /* decrypt */
  51
  52   arcfour_setkey (&ctx, key_1, sizeof (key_1));
  53   arcfour_stream (&ctx, scratch, scratch, sizeof (plaintext_1));
  54   if (memcmp (scratch, plaintext_1, sizeof (plaintext_1)))
  55     {
  56       size_t i;
  57       printf ("expected:\n");
  58       for (i = 0; i < 5; i++)
  59         printf ("%02x ", plaintext_1[i] & 0xFF);
  60       printf ("\ncomputed:\n");
  61       for (i = 0; i < 5; i++)
  62         printf ("%02x ", scratch[i] & 0xFF);
  63       printf ("\n");
  64       return 1;
  65     }
  66
  67
  68   return 0;
  69 }