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package org.bouncycastle.crypto.test;
import org.bouncycastle.crypto.BlockCipher;
import org.bouncycastle.crypto.BufferedBlockCipher;
import org.bouncycastle.crypto.CipherParameters;
import org.bouncycastle.crypto.DataLengthException;
import org.bouncycastle.crypto.InvalidCipherTextException;
import org.bouncycastle.crypto.engines.AESEngine;
import org.bouncycastle.crypto.modes.NISTCTSBlockCipher;
import org.bouncycastle.crypto.modes.SICBlockCipher;
import org.bouncycastle.crypto.params.KeyParameter;
import org.bouncycastle.crypto.params.ParametersWithIV;
import org.bouncycastle.util.encoders.Hex;
import org.bouncycastle.util.test.SimpleTest;
/**
* CTS tester
*/
public class NISTCTSTest
extends SimpleTest
{
private static KeyParameter key = new KeyParameter(Hex.decode("000102030405060708090a0b0c0d0e0f"));
private static byte[] iv = Hex.decode("101112131415161718191a1b1c1d1e1f");
private static byte[] singleBlock = Hex.decode("4920616d206f6e6520626c6f636b2e2e");
private static byte[] singleOut = Hex.decode("8aad2098847a2d74ac87de22745d2537");
private static byte[] twoBlock = Hex.decode("4920616d206174206c656173742074776f20626c6f636b73206c6f6e672e2e2e");
private static byte[] cs1TwoBlockOut = Hex.decode("3f07fd5816c3b96349eb9f6a074909d67237eb8aa9a7467b8a388c61d0e8f35a");
private static byte[] cs2TwoBlockOut = Hex.decode("3f07fd5816c3b96349eb9f6a074909d67237eb8aa9a7467b8a388c61d0e8f35a");
private static byte[] cs3TwoBlockOut = Hex.decode("7237eb8aa9a7467b8a388c61d0e8f35a3f07fd5816c3b96349eb9f6a074909d6");
private static byte[] notQuiteTwo = Hex.decode("4920616d206e6f742071756974652074776f2e2e2e");
private static byte[] cs1NotQuiteTwoBlockOut = Hex.decode("22ecf2ac77f098097ca69b72e3a46e9ca21bb5ebbc");
private static byte[] cs2NotQuiteTwoBlockOut = Hex.decode("f098097ca69b72e3a46e9ca21bb5ebbc22ecf2ac77");
private static byte[] cs3NotQuiteTwoBlockOut = Hex.decode("f098097ca69b72e3a46e9ca21bb5ebbc22ecf2ac77");
static byte[] in1 = Hex.decode("4e6f7720697320746865207420");
static byte[] in2 = Hex.decode("000102030405060708090a0b0c0d0e0fff0102030405060708090a0b0c0d0e0f0aaa");
static byte[] out1 = Hex.decode("9952f131588465033fa40e8a98");
static byte[] out2 = Hex.decode("358f84d01eb42988dc34efb994");
static byte[] out3 = Hex.decode("170171cfad3f04530c509b0c1f0be0aefbd45a8e3755a873bff5ea198504b71683c6");
private void testCTS(
int id,
int type,
BlockCipher cipher,
CipherParameters params,
byte[] input,
byte[] output)
throws Exception
{
byte[] out = new byte[input.length];
BufferedBlockCipher engine = new NISTCTSBlockCipher(type, cipher);
engine.init(true, params);
int len = engine.processBytes(input, 0, input.length, out, 0);
engine.doFinal(out, len);
if (!areEqual(output, out))
{
fail(id + " failed encryption expected " + new String(Hex.encode(output)) + " got " + new String(Hex.encode(out)));
}
engine.init(false, params);
len = engine.processBytes(output, 0, output.length, out, 0);
engine.doFinal(out, len);
if (!areEqual(input, out))
{
fail(id + " failed decryption expected " + new String(Hex.encode(input)) + " got " + new String(Hex.encode(out)));
}
}
private void testExceptions() throws InvalidCipherTextException
{
BufferedBlockCipher engine = new NISTCTSBlockCipher(NISTCTSBlockCipher.CS1, new AESEngine());
CipherParameters params = new KeyParameter(new byte[engine.getBlockSize()]);
engine.init(true, params);
byte[] out = new byte[engine.getOutputSize(engine.getBlockSize())];
engine.processBytes(new byte[engine.getBlockSize() - 1], 0, engine.getBlockSize() - 1, out, 0);
try
{
engine.doFinal(out, 0);
fail("Expected CTS encrypt error on < 1 block input");
} catch(DataLengthException e)
{
// Expected
}
engine.init(true, params);
engine.processBytes(new byte[engine.getBlockSize()], 0, engine.getBlockSize(), out, 0);
try
{
engine.doFinal(out, 0);
} catch(DataLengthException e)
{
fail("Unexpected CTS encrypt error on == 1 block input");
}
engine.init(false, params);
engine.processBytes(new byte[engine.getBlockSize() - 1], 0, engine.getBlockSize() - 1, out, 0);
try
{
engine.doFinal(out, 0);
fail("Expected CTS decrypt error on < 1 block input");
} catch(DataLengthException e)
{
// Expected
}
engine.init(false, params);
engine.processBytes(new byte[engine.getBlockSize()], 0, engine.getBlockSize(), out, 0);
try
{
engine.doFinal(out, 0);
} catch(DataLengthException e)
{
fail("Unexpected CTS decrypt error on == 1 block input");
}
}
public String getName()
{
return "CTS";
}
public void performTest()
throws Exception
{
testCTS(1, NISTCTSBlockCipher.CS1, new AESEngine(), new ParametersWithIV(key, iv), singleBlock, singleOut);
testCTS(2, NISTCTSBlockCipher.CS2, new AESEngine(), new ParametersWithIV(key, iv), singleBlock, singleOut);
testCTS(3, NISTCTSBlockCipher.CS3, new AESEngine(), new ParametersWithIV(key, iv), singleBlock, singleOut);
testCTS(4, NISTCTSBlockCipher.CS1, new AESEngine(), new ParametersWithIV(key, iv), twoBlock, cs1TwoBlockOut);
testCTS(5, NISTCTSBlockCipher.CS2, new AESEngine(), new ParametersWithIV(key, iv), twoBlock, cs2TwoBlockOut);
testCTS(6, NISTCTSBlockCipher.CS3, new AESEngine(), new ParametersWithIV(key, iv), twoBlock, cs3TwoBlockOut);
testCTS(7, NISTCTSBlockCipher.CS1, new AESEngine(), new ParametersWithIV(key, iv), notQuiteTwo, cs1NotQuiteTwoBlockOut);
testCTS(8, NISTCTSBlockCipher.CS2, new AESEngine(), new ParametersWithIV(key, iv), notQuiteTwo, cs2NotQuiteTwoBlockOut);
testCTS(9, NISTCTSBlockCipher.CS3, new AESEngine(), new ParametersWithIV(key, iv), notQuiteTwo, cs3NotQuiteTwoBlockOut);
testExceptions();
}
public static void main(
String[] args)
{
runTest(new NISTCTSTest());
}
}
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