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RIOT/tests/unittests/tests-hashes/tests-hashes-md5.c 2.24 KB
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  /*
   * Copyright (C) 2015 Freie Universitรคt Berlin
   *
   * This file is subject to the terms and conditions of the GNU Lesser
   * General Public License v2.1. See the file LICENSE in the top level
   * directory for more details.
   */
  
  /**
   * @ingroup     unittests
   * @{
   *
   * @file
   * @brief       Test cases for the MD5 hash implementation
   *
   * @author      Hauke Petersen <hauke.petersen@fu-berlin.de>
   *
   * @}
   */
  
  #include <stdio.h>
  #include <string.h>
  
  #include "embUnit/embUnit.h"
  
  #include "hashes/md5.h"
  
  #define MD5_DIGEST_LENGTH           (16U)
  
  static int calc_and_compare_hash(const char *str, const char *expected)
  {
      uint8_t hash[MD5_DIGEST_LENGTH];
      char tmp[(2 * MD5_DIGEST_LENGTH) + 1];
  
      /* calculate hash */
      md5(hash, (const uint8_t *)str, strlen(str));
      /* copy hash to string */
      for (size_t i = 0; i < MD5_DIGEST_LENGTH; i++) {
          sprintf(&(tmp[i * 2]), "%02x", hash[i]);
      }
      tmp[MD5_DIGEST_LENGTH * 2] = '\0';
      /* compare with result string */
      return strncmp(tmp, expected, strlen(tmp));
  }
  
  /* test cases copied from appendix A.5 of RFC 1321 */
  static void test_hashes_md5(void)
  {
      TEST_ASSERT(calc_and_compare_hash("",
                  "d41d8cd98f00b204e9800998ecf8427e") == 0);
      TEST_ASSERT(calc_and_compare_hash("a",
                  "0cc175b9c0f1b6a831c399e269772661") == 0);
      TEST_ASSERT(calc_and_compare_hash("abc",
                  "900150983cd24fb0d6963f7d28e17f72") == 0);
      TEST_ASSERT(calc_and_compare_hash("message digest",
                  "f96b697d7cb7938d525a2f31aaf161d0") == 0);
      TEST_ASSERT(calc_and_compare_hash("abcdefghijklmnopqrstuvwxyz",
                  "c3fcd3d76192e4007dfb496cca67e13b") == 0);
      TEST_ASSERT(calc_and_compare_hash(
                  "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789",
                  "d174ab98d277d9f5a5611c2c9f419d9f") == 0);
      TEST_ASSERT(calc_and_compare_hash(
                  "12345678901234567890123456789012345678901234567890123456789012345678901234567890",
                  "57edf4a22be3c955ac49da2e2107b67a") == 0);
  }
  
  Test *tests_hashes_md5_tests(void)
  {
      EMB_UNIT_TESTFIXTURES(fixtures) {
          new_TestFixture(test_hashes_md5),
      };
  
      EMB_UNIT_TESTCALLER(test_hashes_md5, NULL, NULL, fixtures);
  
      return (Test *)&test_hashes_md5;
  }