tests/test-aes128.c

   1 /*
   2  * Copyright (c) 2009, 2010, 2013, 2014 Nicira, Inc.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at:
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 #include <config.h>
  18 #undef NDEBUG
  19 #include "aes128.h"
  20 #include <ctype.h>
  21 #include "ovstest.h"
  22 #include "util.h"
  23
  24 static void
  25 hex_to_uint8(const char *input, uint8_t *output, size_t n)
  26 {
  27     size_t i;
  28
  29     if (strlen(input) != n * 2) {
  30         goto error;
  31     }
  32     for (i = 0; i < n; i++) {
  33         bool ok;
  34
  35         output[i] = hexits_value(&input[i * 2], 2, &ok);
  36         if (!ok) {
  37             goto error;
  38         }
  39     }
  40     return;
  41
  42 error:
  43     ovs_fatal(0, "\"%s\" is not exactly %"PRIuSIZE" hex digits", input, n * 2);
  44 }
  45
  46 static void
  47 test_aes128_main(int argc, char *argv[])
  48 {
  49     struct aes128 aes;
  50     uint8_t plaintext[16];
  51     uint8_t ciphertext[16];
  52     uint8_t key[16];
  53     size_t i;
  54
  55     if (argc != 3) {
  56         ovs_fatal(0, "usage: %s KEY PLAINTEXT, where KEY and PLAINTEXT each "
  57                   "consist of 32 hex digits", argv[0]);
  58     }
  59
  60     hex_to_uint8(argv[1], key, 16);
  61     hex_to_uint8(argv[2], plaintext, 16);
  62
  63     aes128_schedule(&aes, key);
  64     aes128_encrypt(&aes, plaintext, ciphertext);
  65     for (i = 0; i < 16; i++) {
  66         printf("%02x", ciphertext[i]);
  67     }
  68     putchar('\n');
  69 }
  70
  71 OVSTEST_REGISTER("test-aes128", test_aes128_main);