public function testTripleDesEncryptDecrypt()
{
$key = '0123456789ABCDEFFEDCBA9876543210';
$data = '0123456789ABCDEF';
$expected = $data;
$actual = Utility::tripleDesDecrypt(Utility::tripleDesEncrypt($data, $key), $key, true);
$this->assertEquals($expected, $actual);
}
public function testDecryptSwipe()
{
$encryptedData = 'EE83560CE7D7A276196EF815A8E5D58838336A87CE90052B35BE5C78D49BCED40BE2531A3F6FF89E7DFDCF8E73747EEB92712F56CA47CA1A04EB8C41DFDF57C24E4ECF9A1C56C121BE467045CE8DA7EFA6F3D91F65D4247FF8588BE9AE6C082E6BA4A9F03EFDF21B4E4ECF9A1C56C121A37A63AFE2FD0F2B';
$bdk = 'FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF';
$ksn = new KeySerialNumber('FFFFFFFFFFFFFFE00024');
$expected = '2542343030323437393437303731373439335E4645524E414E44455A2F4D415243555320432020202020205E313330323230313030303030202020202020202030303133363030303030303F3B343030323437393437303731373439333D31333032323031303030303031333630303030303F0000000000';
$derivedKey = DerivedKey::getNowKey($ksn, $bdk);
$actual = Utility::tripleDesDecrypt($encryptedData, $derivedKey);
$this->assertEquals($expected, $actual);
}
public function testDecryptDukptTrack2()
{
$encryptedHexData = 'AB3B10A3FBC230FBFB941FAC9E82649981AE79F2632156E775A06AEDAFAF6F0A184318C5209E55AD';
$ksn = '62994901190000000002';
$bdk = '0123456789ABCDEFFEDCBA9876543210';
$key = new KeySerialNumber($ksn);
$encryptionKey = DerivedKey::calculateDataEncryptionRequestKey($key, $bdk);
$actual = Utility::hex2bin(Utility::removePadding(Utility::tripleDesDecrypt($encryptedHexData, $encryptionKey, true)));
$expected = ";4266841088889999=080910110000046?0";
$this->assertEquals($expected, $actual);
}
/**
* 3-DES Decrypt in EDE-CBC3 Mode
*
* @param string $hexEncryptedData
* Encrypted Data in hexadecimal representation
* @param string $hexKey
* Key in hexadecimal representation
* @param bool $useDesModeCBC3
* Use DES CBC3 Mode
*
* @return string
* Decrypted data in hexadecimal representation
*/
public static function tripleDesDecrypt($hexEncryptedData, $hexKey, $useDesModeCBC3 = false)
{
//fix Crypt Library padding
$hexKey = $hexKey . substr($hexKey, 0, 16);
if ($useDesModeCBC3) {
$crypt3DES = new \Crypt_TripleDES(CRYPT_DES_MODE_CBC3);
// IDTech uses mode CRYPT_DES_MODE_CBC3
} else {
$crypt3DES = new \Crypt_TripleDES(CRYPT_DES_MODE_ECB);
// Chinese uses mode CRYPT_DES_MODE_ECB
}
$crypt3DES->setKey(Utility::hex2bin($hexKey));
$crypt3DES->disablePadding();
return strtoupper(bin2hex($crypt3DES->decrypt(Utility::hex2bin($hexEncryptedData))));
}
