tests/test-arcfour.c

   1 /*
   2  * Copyright (C) 2005, 2010-2024 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 <https://www.gnu.org/licenses/>.  */
  17
  18 #include <config.h>
  19
  20 #include "arcfour.h"
  21
  22 #include <stdio.h>
  23 #include <string.h>
  24
  25 int
  26 main (int argc, char *argv[])
  27 {
  28   arcfour_context ctx;
  29   /* Test vector from Cryptlib via Libgcrypt labeled there: "from the
  30      State/Commerce Department". */
  31   static char key_1[] = { 0x61, 0x8A, 0x63, 0xD2, 0xFB };
  32   static char plaintext_1[] = { 0xDC, 0xEE, 0x4C, 0xF9, 0x2C };
  33   static const char ciphertext_1[] = { 0xF1, 0x38, 0x29, 0xC9, 0xDE };
  34   char scratch[16];
  35
  36   arcfour_setkey (&ctx, key_1, sizeof (key_1));
  37   arcfour_stream (&ctx, plaintext_1, scratch, sizeof (plaintext_1));
  38   if (memcmp (scratch, ciphertext_1, sizeof (ciphertext_1)))
  39     {
  40       size_t i;
  41       printf ("expected:\n");
  42       for (i = 0; i < 5; i++)
  43         printf ("%02x ", scratch[i] & 0xFF);
  44       printf ("\ncomputed:\n");
  45       for (i = 0; i < 5; i++)
  46         printf ("%02x ", ciphertext_1[i] & 0xFF);
  47       printf ("\n");
  48       return 1;
  49     }
  50
  51   /* decrypt */
  52
  53   arcfour_setkey (&ctx, key_1, sizeof (key_1));
  54   arcfour_stream (&ctx, scratch, scratch, sizeof (plaintext_1));
  55   if (memcmp (scratch, plaintext_1, sizeof (plaintext_1)))
  56     {
  57       size_t i;
  58       printf ("expected:\n");
  59       for (i = 0; i < 5; i++)
  60         printf ("%02x ", plaintext_1[i] & 0xFF);
  61       printf ("\ncomputed:\n");
  62       for (i = 0; i < 5; i++)
  63         printf ("%02x ", scratch[i] & 0xFF);
  64       printf ("\n");
  65       return 1;
  66     }
  67
  68
  69   return 0;
  70 }