private static byte[] Mac_des_3des(GPKey key, byte[] text, int offset, int length, byte[] iv)
{
if (length == -1)
{
length = text.Length - offset;
}
try
{
//Cipher cipher1 = Cipher.getInstance(DES_CBC_CIPHER);
//cipher1.init(Cipher.ENCRYPT_MODE, key.getKey(Type.DES), new IvParameterSpec(iv));
//Cipher cipher2 = Cipher.getInstance(DES3_CBC_CIPHER);
//cipher2.init(Cipher.ENCRYPT_MODE, key.getKey(Type.DES3), new IvParameterSpec(iv));
byte[] result = Arrays.Clone(iv);
byte[] temp;
if (length > 8)
{
temp = GPCrypto.DoEncrypt_DES_CBC(key.GetKey(KeyType.DES).GetEncoded(), text, offset, length - 8, iv);
Array.Copy(temp, temp.Length - 8, result, 0, 8);
}
temp = GPCrypto.DoEncrypt_DES3_CBC(key.GetKey(KeyType.DES3).GetEncoded(), text, (offset + length) - 8, 8, result);
Array.Copy(temp, temp.Length - 8, result, 0, 8);
return(result);
}
catch (Exception e)
{
//e.printStackTrace();
throw new Exception("MAC computation failed.", e);
}
}
private static byte[] Scp03_key_check_value(GPKey key)
{
try
{
byte[] cv = GPCrypto.DoEncrypt_AES_CBC(key.GetKey().GetEncoded(), GPCrypto.one_bytes_16);
//Cipher c = Cipher.getInstance(AES_CBC_CIPHER);
//c.init(Cipher.ENCRYPT_MODE, key.getKey(), iv_null_aes);
//byte[] cv = c.doFinal(one_bytes_16);
return(Arrays.CopyOfRange(cv, 0, 3));
}
catch (Exception e)
{
throw new Exception("Could not calculate key check value: ", e);
}
}
//public static IvParameterSpec iv_null_des = new IvParameterSpec(null_bytes_8);
//public static IvParameterSpec iv_null_aes = new IvParameterSpec(null_bytes_16);
public static byte[] Kcv_3des(GPKey key)
{
try
{
byte[] check = DoEncrypt_DES3_ECB(key.GetKey().GetEncoded(), null_bytes_8);
//Cipher cipher = Cipher.getInstance("DESede/ECB/NoPadding");
//cipher.init(Cipher.ENCRYPT_MODE, key.getKey());
//byte check[] = cipher.doFinal(GPCrypto.null_bytes_8);
return(Arrays.CopyOf(check, 3));
}
catch (Exception e)
{
throw new Exception("Could not calculate KCV", e);
}
}
private static byte[] Mac_3des(GPKey key, byte[] text, byte[] iv)
{
byte[] d = Pad80(text, 8);
return(Mac_3des(key.GetKey(), d, 0, d.Length, iv));
}