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package org.bouncycastle.crypto.test;
import org.bouncycastle.crypto.KeyGenerationParameters;
import org.bouncycastle.crypto.Wrapper;
import org.bouncycastle.crypto.engines.DESedeEngine;
import org.bouncycastle.crypto.engines.DESedeWrapEngine;
import org.bouncycastle.crypto.generators.DESedeKeyGenerator;
import org.bouncycastle.crypto.params.DESedeParameters;
import org.bouncycastle.crypto.params.KeyParameter;
import org.bouncycastle.crypto.params.ParametersWithIV;
import org.bouncycastle.util.encoders.Hex;
import org.bouncycastle.util.test.SimpleTest;
import java.security.SecureRandom;
/**
* DESede tester
*/
public class DESedeTest
extends CipherTest
{
static private byte[] weakKey = // first 8 bytes non-weak
{
(byte)0x06,(byte)0x01,(byte)0x01,(byte)0x01, (byte)0x01,(byte)0x01,(byte)0x01,(byte)0x01,
(byte)0x1f,(byte)0x1f,(byte)0x1f,(byte)0x1f, (byte)0x0e,(byte)0x0e,(byte)0x0e,(byte)0x0e,
(byte)0xe0,(byte)0xe0,(byte)0xe0,(byte)0xe0, (byte)0xf1,(byte)0xf1,(byte)0xf1,(byte)0xf1,
};
static String input1 = "4e6f77206973207468652074696d6520666f7220616c6c20";
static String input2 = "4e6f7720697320746865";
static SimpleTest[] tests =
{
new BlockCipherVectorTest(0, new DESedeEngine(),
new DESedeParameters(Hex.decode("0123456789abcdef0123456789abcdef")),
input1, "3fa40e8a984d48156a271787ab8883f9893d51ec4b563b53"),
new BlockCipherVectorTest(1, new DESedeEngine(),
new DESedeParameters(Hex.decode("0123456789abcdeffedcba9876543210")),
input1, "d80a0d8b2bae5e4e6a0094171abcfc2775d2235a706e232c"),
new BlockCipherVectorTest(2, new DESedeEngine(),
new DESedeParameters(Hex.decode("0123456789abcdef0123456789abcdef0123456789abcdef")),
input1, "3fa40e8a984d48156a271787ab8883f9893d51ec4b563b53"),
new BlockCipherVectorTest(3, new DESedeEngine(),
new DESedeParameters(Hex.decode("0123456789abcdeffedcba98765432100123456789abcdef")),
input1, "d80a0d8b2bae5e4e6a0094171abcfc2775d2235a706e232c")
};
DESedeTest()
{
super(tests, new DESedeEngine(), new KeyParameter(new byte[16]));
}
private void wrapTest(
int id,
byte[] kek,
byte[] iv,
byte[] in,
byte[] out)
{
Wrapper wrapper = new DESedeWrapEngine();
wrapper.init(true, new ParametersWithIV(new KeyParameter(kek), iv));
try
{
byte[] cText = wrapper.wrap(in, 0, in.length);
if (!areEqual(cText, out))
{
fail(": failed wrap test " + id + " expected " + new String(Hex.encode(out)) + " got " + new String(Hex.encode(cText)));
}
}
catch (Exception e)
{
fail("failed wrap test exception: " + e.toString(), e);
}
wrapper.init(false, new KeyParameter(kek));
try
{
byte[] pText = wrapper.unwrap(out, 0, out.length);
if (!areEqual(pText, in))
{
fail("failed unwrap test " + id + " expected " + new String(Hex.encode(in)) + " got " + new String(Hex.encode(pText)));
}
}
catch (Exception e)
{
fail("failed unwrap test exception: " + e.toString(), e);
}
}
public void performTest()
throws Exception
{
super.performTest();
byte[] kek1 = Hex.decode("255e0d1c07b646dfb3134cc843ba8aa71f025b7c0838251f");
byte[] iv1 = Hex.decode("5dd4cbfc96f5453b");
byte[] in1 = Hex.decode("2923bf85e06dd6ae529149f1f1bae9eab3a7da3d860d3e98");
byte[] out1 = Hex.decode("690107618ef092b3b48ca1796b234ae9fa33ebb4159604037db5d6a84eb3aac2768c632775a467d4");
wrapTest(1, kek1, iv1, in1, out1);
//
// key generation
//
SecureRandom random = new SecureRandom();
DESedeKeyGenerator keyGen = new DESedeKeyGenerator();
keyGen.init(new KeyGenerationParameters(random, 112));
byte[] kB = keyGen.generateKey();
if (kB.length != 16)
{
fail("112 bit key wrong length.");
}
keyGen.init(new KeyGenerationParameters(random, 168));
kB = keyGen.generateKey();
if (kB.length != 24)
{
fail("168 bit key wrong length.");
}
try
{
keyGen.init(new KeyGenerationParameters(random, 200));
fail("invalid key length not detected.");
}
catch (IllegalArgumentException e)
{
// expected
}
try
{
DESedeParameters.isWeakKey(new byte[4], 0);
fail("no exception on small key");
}
catch (IllegalArgumentException e)
{
if (!e.getMessage().equals("key material too short."))
{
fail("wrong exception");
}
}
try
{
new DESedeParameters(weakKey);
fail("no exception on weak key");
}
catch (IllegalArgumentException e)
{
if (!e.getMessage().equals("attempt to create weak DESede key"))
{
fail("wrong exception");
}
}
}
public String getName()
{
return "DESede";
}
public static void main(
String[] args)
{
runTest(new DESedeTest());
}
}
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