public void testFF1w()
{
byte[] key = Hex.Decode("EF4359D8D580AA4F7F036D6F04FC6A942B7E151628AED2A6");
byte[] plainText = Hex.Decode("0327035100210215");
byte[] cipherText = Hex.Decode("022701f80217020a");
byte[] tweak = Hex.Decode("39383736353433323130");
FpeEngine fpeEngine = new FpeFf1Engine();
fpeEngine.Init(true, new FpeParameters(new KeyParameter(key), 1024, tweak));
byte[] enc = new byte[plainText.Length];
fpeEngine.ProcessBlock(plainText, 0, plainText.Length, enc, 0);
AreEqual(cipherText, enc);
fpeEngine.Init(false, new FpeParameters(new KeyParameter(key), 1024, tweak));
fpeEngine.ProcessBlock(cipherText, 0, cipherText.Length, enc, 0);
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 testFF1()
{
for (int i = 0; i < ff1Samples.Length; ++i)
{
testFF1Sample(ff1Samples[i]);
}
byte[] key = Hex.Decode("EF4359D8D580AA4F7F036D6F04FC6A942B7E151628AED2A6");
byte[] plainText = Hex.Decode("0327035100210215");
byte[] tweak = Hex.Decode("39383736353433323130");
FpeEngine fpeEngine = new FpeFf1Engine();
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.ProcessBlock(new byte[] { 1 }, 0, 1, plainText, 0);
Fail("no exception");
}
catch (ArgumentException e)
{
IsEquals("input too short", e.Message);
}
}
private void testFF1Sample(FFSample ff1)
{
FpeEngine fpeEngine = new FpeFf1Engine();
fpeEngine.Init(true, new FpeParameters(new KeyParameter(ff1.getKey()), ff1.getRadix(), ff1.getTweak()));
byte[] plain = ff1.getPlaintext();
byte[] enc = new byte[plain.Length];
fpeEngine.ProcessBlock(plain, 0, plain.Length, enc, 0);
IsTrue(AreEqual(ff1.getCiphertext(), enc));
fpeEngine.Init(false, new FpeParameters(new KeyParameter(ff1.getKey()), ff1.getRadix(), ff1.getTweak()));
fpeEngine.ProcessBlock(ff1.getCiphertext(), 0, ff1.getCiphertext().Length, enc, 0);
IsTrue(AreEqual(ff1.getPlaintext(), enc));
}
public void testFF1Bounds()
{
byte[] key = Hex.Decode("339BB5B1F2D44BAABF87CA1B7380CDC8");
byte[] tweak = Hex.Decode("3F096DE35BFA31");
FpeEngine fpeEngine = new FpeFf1Engine();
try
{
IAlphabetMapper alphabetMapper = new BasicAlphabetMapper("ABCDEFGHI");
fpeEngine.Init(true, new FpeParameters(new KeyParameter(key),
alphabetMapper.Radix, tweak));
process(fpeEngine, new byte[] { 1, 2, 3 });
Fail("no exception");
}
catch (ArgumentException e)
{
IsEquals("input too short", e.Message);
}
try
{
IAlphabetMapper alphabetMapper = new BasicAlphabetMapper("ABCD");
fpeEngine.Init(true, new FpeParameters(new KeyParameter(key),
alphabetMapper.Radix, tweak));
process(fpeEngine, new byte[] { 1, 2, 3 });
Fail("no exception");
}
catch (ArgumentException e)
{
IsEquals("input too short", e.Message);
}
}