private ByteArray GenerateExAuthMAC2(ByteArray command, ByteArray terminalCryptogram)
{
ByteArray input = command.Extract(0, 5) + terminalCryptogram + new ByteArray("80 00 00");
ByteArray mac_key_left = _sessionKeys.SignKey.MSB(8); //MSB mac key
ByteArray mac_key_right = _sessionKeys.SignKey.LSB(8);
ByteArray iv = new ByteArray(8, 0x00);
//ByteArray result = input.EncodeAsData(SessionKeys.SignKey, new ByteArray(8), PaddingMode.None, CipherMode.CBC);
//ByteArray result = input.EncodeAsData(mac_key_left + mac_key_right, iv, PaddingMode.None, CipherMode.CBC);
//ByteArray result_comp = result.LSB(8);
ByteArray apdu_left = input.MSB(8);
ByteArray apdu_right = input.LSB(8);
ByteArray result1 = apdu_left.SimpleEncodeAsData(mac_key_left, iv, PaddingMode.None, CipherMode.CBC);
ByteArray result2 = result1.XOR(apdu_right);
ByteArray result3 = result2.SimpleEncodeAsData(mac_key_left, iv, PaddingMode.None, CipherMode.CBC);
ByteArray result4 = result3.SimpleDecodeAsData(mac_key_right, iv, PaddingMode.None, CipherMode.CBC);
ByteArray result5 = result4.SimpleEncodeAsData(mac_key_left, iv, PaddingMode.None, CipherMode.CBC);
Logger.Log("[JavaCard] Wyliczanie MAC dla APDU {0} (kolejne wyniki algorytmu DES)\n{1}\n{2}\n{3}\n{4}\n{5}", input, result1, result2, result3, result4, result5);
return(result5);
}
private ByteArray GenerateTerminalCryptogram(ByteArray terminalRandom, ByteArray cardRandom)
{
ByteArray padding = new ByteArray("80 00 00 00 00 00 00 00");
//ByteArray input = cardRandom + terminalRandom + padding;
//ByteArray result = input.EncodeAsData(SessionKeys.AuthEncKey, new ByteArray(8, 0x00), PaddingMode.None, CipherMode.CBC);
//return result.LSB(8);
ByteArray key_left = _sessionKeys.AuthEncKey.MSB(8); //MSB mac key
ByteArray key_right = _sessionKeys.AuthEncKey.LSB(8);
ByteArray iv = new ByteArray(8, 0x00);
ByteArray result1 = cardRandom.SimpleEncodeAsData(key_left, iv, PaddingMode.None, CipherMode.CBC);
ByteArray result2 = result1.SimpleDecodeAsData(key_right, iv, PaddingMode.None, CipherMode.CBC);
ByteArray result3 = result2.SimpleEncodeAsData(key_left, iv, PaddingMode.None, CipherMode.CBC);
ByteArray result4 = result3.XOR(terminalRandom);
ByteArray result5 = result4.SimpleEncodeAsData(key_left, iv, PaddingMode.None, CipherMode.CBC);
ByteArray result6 = result5.SimpleDecodeAsData(key_right, iv, PaddingMode.None, CipherMode.CBC);
ByteArray result7 = result6.SimpleEncodeAsData(key_left, iv, PaddingMode.None, CipherMode.CBC);
ByteArray result8 = result7.XOR(padding);
ByteArray result9 = result8.SimpleEncodeAsData(key_left, iv, PaddingMode.None, CipherMode.CBC);
ByteArray result10 = result9.SimpleDecodeAsData(key_right, iv, PaddingMode.None, CipherMode.CBC);
ByteArray result11 = result10.SimpleEncodeAsData(key_left, iv, PaddingMode.None, CipherMode.CBC);
Logger.Log("[JavaCard] Wyliczanie terminal Cryptogram (kolejne wyniki algorytmu DES)\n{0}\n{1}\n{2}\n{3}\n{4}\n{5}\n{6}\n{7}\n{8}\n{9}\n{10}", result1, result2, result3, result4, result5, result6, result7, result8, result9, result10, result11);
return(result11);
}