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using System;
using System.IO;
using NUnit.Framework;
using Org.BouncyCastle.Crypto;
using Org.BouncyCastle.Crypto.IO;
using Org.BouncyCastle.Crypto.Parameters;
using Org.BouncyCastle.Security;
using Org.BouncyCastle.Utilities;
using Org.BouncyCastle.Utilities.Encoders;
using Org.BouncyCastle.Utilities.Test;
namespace Org.BouncyCastle.Tests
{
/// <remarks>
/// Basic FIPS test class for a block cipher, just to make sure ECB/CBC/OFB/CFB are behaving
/// correctly. Tests from <a href="http://www.itl.nist.gov/fipspubs/fip81.htm">FIPS 81</a>.
/// </remarks>
[TestFixture]
public class FipsDesTest
: ITest
{
private static readonly string[] fips1Tests =
{
"DES/ECB/NoPadding",
"3fa40e8a984d48156a271787ab8883f9893d51ec4b563b53",
"DES/CBC/NoPadding",
"e5c7cdde872bf27c43e934008c389c0f683788499a7c05f6",
"DES/CFB/NoPadding",
"f3096249c7f46e51a69e839b1a92f78403467133898ea622"
};
private static readonly string[] fips2Tests =
{
"DES/CFB8/NoPadding",
"f31fda07011462ee187f",
"DES/OFB8/NoPadding",
"f34a2850c9c64985d684"
};
private static readonly byte[] input1 = Hex.Decode("4e6f77206973207468652074696d6520666f7220616c6c20");
private static readonly byte[] input2 = Hex.Decode("4e6f7720697320746865");
public string Name
{
get { return "FIPSDES"; }
}
public ITestResult doTest(
string algorithm,
byte[] input,
byte[] output)
{
KeyParameter key;
IBufferedCipher inCipher, outCipher;
CipherStream cIn, cOut;
MemoryStream bIn, bOut;
// IvParameterSpec spec = new IvParameterSpec();
byte[] spec = Hex.Decode("1234567890abcdef");
try
{
key = new DesParameters(Hex.Decode("0123456789abcdef"));
inCipher = CipherUtilities.GetCipher(algorithm);
outCipher = CipherUtilities.GetCipher(algorithm);
if (algorithm.StartsWith("DES/ECB"))
{
outCipher.Init(true, key);
}
else
{
outCipher.Init(true, new ParametersWithIV(key, spec));
}
}
catch (Exception e)
{
return new SimpleTestResult(false, Name + ": " + algorithm + " failed initialisation - " + e.ToString(), e);
}
try
{
if (algorithm.StartsWith("DES/ECB"))
{
inCipher.Init(false, key);
}
else
{
inCipher.Init(false, new ParametersWithIV(key, spec));
}
}
catch (Exception e)
{
return new SimpleTestResult(false, Name + ": " + algorithm + " failed initialisation - " + e.ToString(), e);
}
//
// encryption pass
//
bOut = new MemoryStream();
cOut = new CipherStream(bOut, null, outCipher);
try
{
for (int i = 0; i != input.Length / 2; i++)
{
cOut.WriteByte(input[i]);
}
cOut.Write(input, input.Length / 2, input.Length - input.Length / 2);
cOut.Close();
}
catch (IOException e)
{
return new SimpleTestResult(false, Name + ": " + algorithm + " failed encryption - " + e.ToString());
}
byte[] bytes = bOut.ToArray();
if (!Arrays.AreEqual(bytes, output))
{
return new SimpleTestResult(false, Name + ": " + algorithm + " failed encryption - expected "
+ Hex.ToHexString(output) + " got " + Hex.ToHexString(bytes));
}
//
// decryption pass
//
bIn = new MemoryStream(bytes, false);
cIn = new CipherStream(bIn, inCipher, null);
try
{
BinaryReader dIn = new BinaryReader(cIn);
bytes = new byte[input.Length];
for (int i = 0; i != input.Length / 2; i++)
{
bytes[i] = dIn.ReadByte();
}
int remaining = bytes.Length - input.Length / 2;
byte[] extra = dIn.ReadBytes(remaining);
if (extra.Length < remaining)
throw new EndOfStreamException();
extra.CopyTo(bytes, input.Length / 2);
}
catch (Exception e)
{
return new SimpleTestResult(false, Name + ": " + algorithm + " failed encryption - " + e.ToString());
}
if (!Arrays.AreEqual(bytes, input))
{
return new SimpleTestResult(false, Name + ": " + algorithm + " failed decryption - expected "
+ Hex.ToHexString(input) + " got " + Hex.ToHexString(bytes));
}
return new SimpleTestResult(true, Name + ": " + algorithm + " Okay");
}
public ITestResult Perform()
{
for (int i = 0; i != fips1Tests.Length; i += 2)
{
ITestResult result = doTest(fips1Tests[i], input1, Hex.Decode(fips1Tests[i + 1]));
if (!result.IsSuccessful())
{
return result;
}
}
for (int i = 0; i != fips2Tests.Length; i += 2)
{
ITestResult result = doTest(fips2Tests[i], input2, Hex.Decode(fips2Tests[i + 1]));
if (!result.IsSuccessful())
{
return result;
}
}
return new SimpleTestResult(true, Name + ": Okay");
}
public static void MainOld(
string[] args)
{
ITest test = new FipsDesTest();
ITestResult result = test.Perform();
Console.WriteLine(result);
}
[Test]
public void TestFunction()
{
string resultText = Perform().ToString();
Assert.AreEqual(Name + ": Okay", resultText);
}
}
}
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