private void testFF3_1w()
{
byte[] key = Hex.Decode("EF4359D8D580AA4F7F036D6F04FC6A942B7E151628AED2A6");
byte[] plainText = Hex.Decode("0327035100210215");
byte[] cipherText = Hex.Decode("02fb024900310220");
byte[] tweak = Hex.Decode("39383736353433");
FpeEngine fpeEngine = new FpeFf3_1Engine();
fpeEngine.Init(true, new FpeParameters(new KeyParameter(key), 1024, tweak));
byte[] enc = new byte[plainText.Length];
fpeEngine.ProcessBlock(plainText, 0, plainText.Length, enc, 0);
IsTrue("enc failed: " + Hex.ToHexString(enc), AreEqual(cipherText, enc));
fpeEngine.Init(false, new FpeParameters(new KeyParameter(key), 1024, tweak));
fpeEngine.ProcessBlock(cipherText, 0, cipherText.Length, enc, 0);
IsTrue(AreEqual(plainText, enc));
byte[] outPt = Hex.Decode("03270F5100210215");
try
{
fpeEngine.ProcessBlock(outPt, 0, outPt.Length, enc, 0);
}
catch (ArgumentException e)
{
IsEquals("input data outside of radix", e.Message);
}
}
private void testFF3_1_255()
{
byte[] key = Hex.Decode("339BB5B1F2D44BAABF87CA1B7380CDC8");
byte[] tweak = Hex.Decode("3F096DE35BFA31");
int radix = 256;
FpeEngine fpeEngine = new FpeFf3_1Engine();
fpeEngine.Init(true, new FpeParameters(new KeyParameter(key), radix, tweak));
ulong valueToEncrypt = 0x31009155FFL;
byte[] bytes = Hex.Decode("00000031009155FF");
byte[] enc = new byte[bytes.Length];
//Encrypt
fpeEngine.ProcessBlock(bytes, 0, bytes.Length, enc, 0);
IsTrue(Arrays.AreEqual(Hex.Decode("18fa139dc978a681"), enc));
//Decrypt
fpeEngine.Init(false, new FpeParameters(new KeyParameter(key), radix, tweak));
fpeEngine.ProcessBlock(enc, 0, enc.Length, enc, 0);
IsTrue(Arrays.AreEqual(bytes, enc));
}
private void testFF3_1Sample(FFSample ff3_1)
{
FpeEngine fpeEngine = new FpeFf3_1Engine();
fpeEngine.Init(true, new FpeParameters(new KeyParameter(ff3_1.getKey()), ff3_1.getRadix(), ff3_1.getTweak()));
byte[] plain = ff3_1.getPlaintext();
byte[] enc = new byte[plain.Length];
fpeEngine.ProcessBlock(plain, 0, plain.Length, enc, 0);
IsTrue(AreEqual(ff3_1.getCiphertext(), enc));
fpeEngine.Init(false, new FpeParameters(new KeyParameter(ff3_1.getKey()), ff3_1.getRadix(), ff3_1.getTweak()));
fpeEngine.ProcessBlock(ff3_1.getCiphertext(), 0, plain.Length, enc, 0);
IsTrue(AreEqual(ff3_1.getPlaintext(), enc));
}
public void testFF3_1()
{
for (int i = 0; i < ff3_1Samples.Length; ++i)
{
testFF3_1Sample(ff3_1Samples[i]);
}
byte[] key = Hex.Decode("EF4359D8D580AA4F7F036D6F04FC6A942B7E151628AED2A6");
byte[] plainText = Hex.Decode("0327035100210215");
byte[] tweak = Hex.Decode("39383736353433");
FpeEngine fpeEngine = new FpeFf3_1Engine();
fpeEngine.Init(true, new FpeParameters(new KeyParameter(key), 24, tweak));
try
{
fpeEngine.ProcessBlock(plainText, 0, plainText.Length, plainText, 0);
Fail("no exception");
}
catch (ArgumentException e)
{
IsEquals("input data outside of radix", e.Message);
}
try
{
fpeEngine.Init(true, new FpeParameters(new KeyParameter(key), 24, Hex.Decode("beef")));
Fail("no exception");
}
catch (ArgumentException e)
{
IsEquals("tweak should be 56 bits", e.Message);
}
}
private void ff3_1Test(IAlphabetMapper alphabetMapper, String skey, String stweak, String input, String output)
{
FpeEngine fpeEncEngine = new FpeFf3_1Engine();
FpeEngine fpeDecEngine = new FpeFf3_1Engine();
byte[] key = Hex.Decode(skey);
byte[] tweak = Hex.Decode(stweak);
int radix = alphabetMapper.Radix;
fpeEncEngine.Init(true, new FpeParameters(new KeyParameter(key), radix, tweak));
fpeDecEngine.Init(false, new FpeParameters(new KeyParameter(key), radix, tweak));
byte[] bytes = alphabetMapper.ConvertToIndexes(input.ToCharArray());
byte[] encryptedBytes = process(fpeEncEngine, bytes);
IsEquals(output, new String(alphabetMapper.ConvertToChars(encryptedBytes)));
byte[] decryptedBytes = process(fpeDecEngine, encryptedBytes);
IsTrue(Arrays.AreEqual(bytes, decryptedBytes));
char[] chars = alphabetMapper.ConvertToChars(decryptedBytes);
IsEquals(input, new String(chars));
}