
/*
* Copyright (c) 2013-2016 Rony Shapiro <ronys@pwsafe.org>.
* All rights reserved. Use of the code is allowed under the
* Artistic License 2.0 terms, as specified in the LICENSE file
* distributed with this code, or available from
* http://www.opensource.org/licenses/artistic-license-2.0.php
*/
// AESTest.cpp: Unit test for AES implementation

#ifdef WIN32
#include "../ui/Windows/stdafx.h"
#endif

#include "core/AES.h"
#include "gtest/gtest.h"

TEST(AESTest, aes_test)
{
  static const struct { 
    int keylen;
    unsigned char key[32], pt[16], ct[16];
  } tests[] = {
    { 16,
      { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 
        0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f }, 
      { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77,
        0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff },
      { 0x69, 0xc4, 0xe0, 0xd8, 0x6a, 0x7b, 0x04, 0x30, 
        0xd8, 0xcd, 0xb7, 0x80, 0x70, 0xb4, 0xc5, 0x5a }
    }, { 
      24,
      { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 
        0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
        0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17 },
      { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77,
        0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff },
      { 0xdd, 0xa9, 0x7c, 0xa4, 0x86, 0x4c, 0xdf, 0xe0, 
        0x6e, 0xaf, 0x70, 0xa0, 0xec, 0x0d, 0x71, 0x91 }
    }, {
      32,
      { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 
        0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
        0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 
        0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f },
      { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77,
        0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff },
      { 0x8e, 0xa2, 0xb7, 0xca, 0x51, 0x67, 0x45, 0xbf, 
        0xea, 0xfc, 0x49, 0x90, 0x4b, 0x49, 0x60, 0x89 }
    }
  };

  AES *tf;

  unsigned char tmp[2][16];
  size_t i;
  int y;

  for (i = 0; i < (int)(sizeof(tests) / sizeof(tests[0])); i++) {
    tf = new AES(tests[i].key, tests[i].keylen);

    tf->Encrypt(tests[i].pt, tmp[0]);
    tf->Decrypt(tmp[0], tmp[1]);
    if (memcmp(tmp[0], tests[i].ct, 16) != 0 || memcmp(tmp[1], tests[i].pt, 16) != 0) {
      delete tf;
      FAIL() << "Test vector " << i;
    }

    /* now see if we can encrypt all zero bytes 1000 times, decrypt and come back where we started */
    for (y = 0; y < 16; y++) tmp[0][y] = 0;
    for (y = 0; y < 1000; y++) tf->Encrypt(tmp[0], tmp[0]);
    for (y = 0; y < 1000; y++) tf->Decrypt(tmp[0], tmp[0]);
    for (y = 0; y < 16; y++) if (tmp[0][y] != 0) {delete tf; FAIL() << "Encrypt/Decrypt zeros failed";}

    delete tf;
  }
  SUCCEED();
}
