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))));
}
