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using System;
using NUnit.Framework;
using Org.BouncyCastle.Crypto;
using Org.BouncyCastle.Crypto.Engines;
using Org.BouncyCastle.Crypto.Generators;
using Org.BouncyCastle.Crypto.Parameters;
using Org.BouncyCastle.Security;
using Org.BouncyCastle.Utilities.Encoders;
using Org.BouncyCastle.Utilities.Test;
namespace Org.BouncyCastle.Crypto.Tests
{
/**
* DESede tester
*/
[TestFixture]
public class DesEdeTest
:CipherTest
{
private static readonly 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,
};
private const string input1 = "4e6f77206973207468652074696d6520666f7220616c6c20";
// private const string input2 = "4e6f7720697320746865";
private 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")
};
public DesEdeTest()
: base(tests, new DesEdeEngine(), new DesEdeParameters(new byte[16]))
{
}
private void WrapTest(
int id,
byte[] kek,
byte[] iv,
byte[] input,
byte[] output)
{
IWrapper wrapper = new DesEdeWrapEngine();
wrapper.Init(true, new ParametersWithIV(new DesEdeParameters(kek), iv));
try
{
byte[] cText = wrapper.Wrap(input, 0, input.Length);
if (!AreEqual(cText, output))
{
Fail(": failed wrap test " + id + " expected " + Hex.ToHexString(output)
+ " got " + Hex.ToHexString(cText));
}
}
catch (Exception e)
{
Fail("failed wrap test exception: " + e.ToString(), e);
}
wrapper.Init(false, new DesEdeParameters(kek));
try
{
byte[] pText = wrapper.Unwrap(output, 0, output.Length);
if (!AreEqual(pText, input))
{
Fail("failed unwrap test " + id + " expected " + Hex.ToHexString(input)
+ " got " + Hex.ToHexString(pText));
}
}
catch (Exception e)
{
Fail("failed unwrap test exception: " + e.ToString(), e);
}
}
public override void PerformTest()
{
base.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 (ArgumentException)
{
// expected
}
try
{
DesEdeParameters.IsWeakKey(new byte[4], 0);
Fail("no exception on small key");
}
catch (ArgumentException e)
{
if (!e.Message.Equals("key material too short."))
{
Fail("wrong exception");
}
}
try
{
new DesEdeParameters(weakKey);
Fail("no exception on weak key");
}
catch (ArgumentException e)
{
if (!e.Message.Equals("attempt to create weak DESede key"))
{
Fail("wrong exception");
}
}
}
public override string Name
{
get { return "DESede"; }
}
public static void Main(
string[] args)
{
RunTest(new DesEdeTest());
}
[Test]
public void TestFunction()
{
string resultText = Perform().ToString();
Assert.AreEqual(Name + ": Okay", resultText);
}
}
}
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