Org.BouncyCastle.Crypto.Modes.CfbBlockCipher.ProcessBlock C# (CSharp) Method

        public int ProcessBlock(
            byte[]	input,
            int		inOff,
            byte[]	output,
            int		outOff)
        {
            return (encrypting)
				?	EncryptBlock(input, inOff, output, outOff)
				:	DecryptBlock(input, inOff, output, outOff);
        }

		public virtual ITestResult Perform()
		{
			KeyParameter key = new KeyParameter(Hex.Decode("0011223344556677"));
			byte[] input = Hex.Decode("4e6f7720");
			byte[] out1 = new byte[4];
			byte[] out2 = new byte[4];


			IBlockCipher ofb = new OfbBlockCipher(new DesEngine(), 32);

			ofb.Init(true, new ParametersWithIV(key, Hex.Decode("1122334455667788")));

			ofb.ProcessBlock(input, 0, out1, 0);

			ofb.Init(false, new ParametersWithIV(key, Hex.Decode("1122334455667788")));
			ofb.ProcessBlock(out1, 0, out2, 0);

			if (!Arrays.AreEqual(out2, input))
			{
				return new SimpleTestResult(false, Name + ": test 1 - in != out");
			}

			ofb.Init(true, new ParametersWithIV(key, Hex.Decode("11223344")));

			ofb.ProcessBlock(input, 0, out1, 0);

			ofb.Init(false, new ParametersWithIV(key, Hex.Decode("0000000011223344")));
			ofb.ProcessBlock(out1, 0, out2, 0);

			if (!Arrays.AreEqual(out2, input))
			{
				return new SimpleTestResult(false, Name + ": test 2 - in != out");
			}

			IBlockCipher cfb = new CfbBlockCipher(new DesEngine(), 32);

			cfb.Init(true, new ParametersWithIV(key, Hex.Decode("1122334455667788")));

			cfb.ProcessBlock(input, 0, out1, 0);

			cfb.Init(false, new ParametersWithIV(key, Hex.Decode("1122334455667788")));
			cfb.ProcessBlock(out1, 0, out2, 0);

			if (!Arrays.AreEqual(out2, input))
			{
				return new SimpleTestResult(false, Name + ": test 3 - in != out");
			}

			cfb.Init(true, new ParametersWithIV(key, Hex.Decode("11223344")));

			cfb.ProcessBlock(input, 0, out1, 0);

			cfb.Init(false, new ParametersWithIV(key, Hex.Decode("0000000011223344")));
			cfb.ProcessBlock(out1, 0, out2, 0);

			if (!Arrays.AreEqual(out2, input))
			{
				return new SimpleTestResult(false, Name + ": test 4 - in != out");
			}

			return new SimpleTestResult(true, Name + ": Okay");
		}