1706 lines
54 KiB
C#
1706 lines
54 KiB
C#
//
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// CryptoStreamTest.cs - NUnit Test Cases for CryptoStream
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//
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// Author:
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// Sebastien Pouliot <sebastien@ximian.com>
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//
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// (C) 2003 Motus Technologies Inc. (http://www.motus.com)
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// Copyright (C) 2004-2005 Novell, Inc (http://www.novell.com)
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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/* WARNING * WARNING * WARNING * WARNING * WARNING * WARNING * WARNING *
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*
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* DO NOT USE ANY OF THE TEST CASE AS SAMPLES FOR YOUR OWN CODE. MANY
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* CASES CONTAINS ERRORS AND AREN'T SECURE IN THEIR USE.
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*
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* WARNING * WARNING * WARNING * WARNING * WARNING * WARNING * WARNING */
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using NUnit.Framework;
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using System;
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using System.IO;
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using System.Reflection;
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using System.Runtime.InteropServices;
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using System.Security.Cryptography;
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using System.Text;
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namespace MonoTests.System.Security.Cryptography {
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// much useful for debugging
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public class DebugStream : MemoryStream {
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// constructor
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public DebugStream () : base () {}
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public DebugStream (byte[] buffer) : base (buffer) {}
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public DebugStream (int capacity) : base (capacity) {}
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public override bool CanRead {
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get { return base.CanRead; }
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}
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public override bool CanSeek {
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get { return base.CanSeek; }
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}
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public override bool CanWrite {
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get { return base.CanWrite; }
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}
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public override int Capacity {
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get { return base.Capacity; }
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set { base.Capacity = value; }
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}
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public override long Length {
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get { return base.Length; }
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}
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public override long Position {
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get { return base.Position; }
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set { base.Position = value; }
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}
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// methods
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public override void Close ()
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{
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base.Close ();
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}
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public override void Flush ()
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{
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base.Flush ();
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}
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public override byte[] GetBuffer ()
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{
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return base.GetBuffer ();
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}
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public override int Read ([In,Out] byte[] buffer, int offset, int count)
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{
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int len = base.Read (buffer, offset, count);
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return len;
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}
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public override int ReadByte ()
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{
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return base.ReadByte ();
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}
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public override long Seek (long offset, SeekOrigin loc)
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{
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return base.Seek (offset, loc);
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}
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public override void SetLength (long value)
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{
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base.SetLength (value);
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}
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public override byte[] ToArray ()
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{
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return base.ToArray ();
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}
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public override void Write (byte[] buffer, int offset, int count)
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{
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base.Write (buffer, offset, count);
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}
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public override void WriteByte (byte value)
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{
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base.WriteByte (value);
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}
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public override void WriteTo (Stream stream)
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{
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base.WriteTo (stream);
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}
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}
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[TestFixture]
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public class CryptoStreamTest {
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Stream readStream;
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Stream writeStream;
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ICryptoTransform encryptor;
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CryptoStream cs;
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SymmetricAlgorithm aes;
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[SetUp]
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public void SetUp ()
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{
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if (readStream == null) {
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readStream = new MemoryStream (new byte [0], false);
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writeStream = new MemoryStream (new byte [0], true);
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aes = SymmetricAlgorithm.Create ();
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encryptor = aes.CreateEncryptor ();
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}
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}
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public void AssertEquals (string msg, byte[] array1, byte[] array2)
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{
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Assert.AreEqual (array1, array2, msg);
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}
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[Test]
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[ExpectedException (typeof (NullReferenceException))]
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public void StreamNull ()
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{
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cs = new CryptoStream (null, encryptor, CryptoStreamMode.Read);
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}
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[Test]
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[ExpectedException (typeof (NullReferenceException))]
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public void TransformNull ()
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{
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MemoryStream write = new MemoryStream (8);
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byte[] data = {0, 1, 2, 3, 4, 5, 6, 7};
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cs = new CryptoStream (write, null, CryptoStreamMode.Write);
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cs.Write (data, 0, 8);
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}
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[Test]
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public void StreamReadModeRead ()
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{
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cs = new CryptoStream (readStream, encryptor, CryptoStreamMode.Read);
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Assert.IsTrue (cs.CanRead, "Read.CanRead");
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Assert.IsFalse (cs.CanWrite, "Read.CanWrite");
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Assert.IsFalse (cs.CanSeek, "Read.CanSeek");
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}
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[Test]
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[ExpectedException (typeof (ArgumentException))]
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public void StreamReadModeWrite ()
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{
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cs = new CryptoStream (readStream, encryptor, CryptoStreamMode.Write);
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}
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[Test]
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[ExpectedException (typeof (ArgumentException))]
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public void StreamWriteModeRead ()
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{
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// This needs a stream which can't be read from; memory stream won't do that.
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string f = Path.GetTempFileName ();
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FileStream fs = new FileStream (f, FileMode.OpenOrCreate, FileAccess.Write);
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try {
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cs = new CryptoStream (fs, encryptor, CryptoStreamMode.Read);
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} finally {
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fs.Close ();
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File.Delete (f);
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}
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}
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[Test]
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public void StreamWriteModeWrite ()
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{
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cs = new CryptoStream (writeStream, encryptor, CryptoStreamMode.Write);
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Assert.IsFalse (cs.CanRead, "Read.CanRead");
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Assert.IsTrue (cs.CanWrite, "Read.CanWrite");
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Assert.IsFalse (cs.CanSeek, "Read.CanSeek");
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}
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[Test]
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[ExpectedException (typeof (NotSupportedException))]
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public void GetLength ()
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{
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DebugStream debug = new DebugStream ();
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cs = new CryptoStream (debug, encryptor, CryptoStreamMode.Read);
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long x = cs.Length;
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}
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[Test]
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[ExpectedException (typeof (NotSupportedException))]
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public void GetPosition ()
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{
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DebugStream debug = new DebugStream ();
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cs = new CryptoStream (debug, encryptor, CryptoStreamMode.Read);
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long x = cs.Position;
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}
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[Test]
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[ExpectedException (typeof (NotSupportedException))]
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public void SetPosition ()
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{
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DebugStream debug = new DebugStream ();
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cs = new CryptoStream (debug, encryptor, CryptoStreamMode.Read);
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cs.Position = 1;
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}
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[Test]
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[ExpectedException (typeof (NotSupportedException))]
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public void Seek ()
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{
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DebugStream debug = new DebugStream ();
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cs = new CryptoStream (debug, encryptor, CryptoStreamMode.Read);
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cs.Seek (0, SeekOrigin.Begin);
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}
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[Test]
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[ExpectedException (typeof (NotSupportedException))]
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public void SetLength ()
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{
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DebugStream debug = new DebugStream ();
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cs = new CryptoStream (debug, encryptor, CryptoStreamMode.Read);
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cs.SetLength (0);
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}
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[Test]
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// LAMESPEC : [ExpectedException (typeof (NotSupportedException))]
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public void FlushReadStream ()
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{
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cs = new CryptoStream (readStream, encryptor, CryptoStreamMode.Read);
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cs.Flush ();
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}
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[Test]
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public void FlushFinalBlockReadStream ()
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{
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cs = new CryptoStream (readStream, encryptor, CryptoStreamMode.Read);
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cs.FlushFinalBlock ();
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}
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[Test]
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[ExpectedException (typeof (NotSupportedException))]
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public void FlushFinalBlock_Dual ()
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{
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// do no corrupt writeStream in further tests
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using (Stream s = new MemoryStream ()) {
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byte[] data = {0, 1, 2, 3, 4, 5, 6, 7};
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cs = new CryptoStream (s, encryptor, CryptoStreamMode.Write);
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cs.Write (data, 0, data.Length);
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cs.FlushFinalBlock ();
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cs.FlushFinalBlock ();
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}
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}
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[Test]
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// LAMESPEC or MS BUG [ExpectedException (typeof (ObjectDisposedException))]
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[ExpectedException (typeof (NotSupportedException))]
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public void FlushFinalBlock_Disposed ()
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{
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// do no corrupt writeStream in further tests
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using (Stream s = new MemoryStream ()) {
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cs = new CryptoStream (s, encryptor, CryptoStreamMode.Write);
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cs.Clear ();
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cs.FlushFinalBlock ();
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}
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}
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[Test]
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// LAMESPEC or MS BUG [ExpectedException (typeof (ObjectDisposedException))]
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public void Read_Disposed ()
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{
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// do no corrupt readStream in further tests
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using (Stream s = new MemoryStream ()) {
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byte[] buffer = new byte [8];
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cs = new CryptoStream (s, encryptor, CryptoStreamMode.Read);
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cs.Clear ();
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try {
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cs.Read (buffer, 0, 8);
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Assert.Fail ();
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} catch (NotSupportedException) {
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}
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}
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}
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#if !MOBILE
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[Test]
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[ExpectedException (typeof (NotSupportedException))]
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public void Read_Disposed_Break ()
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{
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// do no corrupt readStream in further tests
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using (Stream s = new MemoryStream ()) {
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byte[] buffer = new byte [8];
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cs = new CryptoStream (s, encryptor, CryptoStreamMode.Read);
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int len = cs.Read (buffer, 0, 4);
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Assert.AreEqual (4, len, "Read 4");
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cs.Clear ();
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len = cs.Read (buffer, 3, 4);
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}
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}
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#endif
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[Test]
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[ExpectedException (typeof (NotSupportedException))]
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public void Read_WriteStream ()
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{
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cs = new CryptoStream (writeStream, encryptor, CryptoStreamMode.Write);
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byte[] buffer = new byte [8];
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cs.Read (buffer, 0, 8);
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}
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[Test]
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[ExpectedException (typeof (NullReferenceException))]
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public void Read_NullBuffer ()
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{
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cs = new CryptoStream (readStream, encryptor, CryptoStreamMode.Read);
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cs.Read (null, 0, 8);
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}
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[Test]
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public void Read_EmptyBuffer_ZeroCount ()
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{
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byte[] buffer = new byte [0];
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cs = new CryptoStream (readStream, encryptor, CryptoStreamMode.Read);
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int len = cs.Read (buffer, 0, 0);
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Assert.AreEqual (0, len, "Read 0");
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}
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[Test]
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[ExpectedException (typeof (ArgumentOutOfRangeException))]
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public void Read_NegativeOffset ()
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{
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byte[] buffer = new byte [8];
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cs = new CryptoStream (readStream, encryptor, CryptoStreamMode.Read);
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cs.Read (buffer, -1, 8);
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}
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[Test]
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public void Read_ZeroCount ()
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{
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byte[] buffer = new byte [8];
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cs = new CryptoStream (readStream, encryptor, CryptoStreamMode.Read);
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int len = cs.Read (buffer, 0, 0);
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Assert.AreEqual (0, len, "Read 0");
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}
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[Test]
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[ExpectedException (typeof (ArgumentOutOfRangeException))]
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public void Read_NegativeCount ()
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{
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byte[] buffer = new byte [8];
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cs = new CryptoStream (readStream, encryptor, CryptoStreamMode.Read);
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cs.Read (buffer, 0, -1);
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}
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[Test]
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[ExpectedException (typeof (ArgumentException))]
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public void Read_OverflowCount ()
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{
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byte[] buffer = new byte [8];
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cs = new CryptoStream (readStream, encryptor, CryptoStreamMode.Read);
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cs.Read (buffer, 0, Int32.MaxValue);
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}
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[Test]
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[ExpectedException (typeof (ArgumentException))]
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public void Read_InvalidOffset ()
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{
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byte[] buffer = new byte [8];
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cs = new CryptoStream (readStream, encryptor, CryptoStreamMode.Read);
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cs.Read (buffer, 5, 4);
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}
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[Test]
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[ExpectedException (typeof (ArgumentException))]
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public void Read_OverflowOffset ()
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{
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byte[] buffer = new byte [8];
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cs = new CryptoStream (readStream, encryptor, CryptoStreamMode.Read);
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cs.Read (buffer, Int32.MaxValue, 4);
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}
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[Test]
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[ExpectedException (typeof (NotSupportedException))]
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public void Write_Disposed ()
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{
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// do no corrupt writeStream in further tests
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using (Stream s = new MemoryStream ()) {
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byte[] buffer = new byte [8];
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cs = new CryptoStream (s, encryptor, CryptoStreamMode.Write);
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cs.Clear ();
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cs.Write (buffer, 0, 8);
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}
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}
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[Test]
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[ExpectedException (typeof (NotSupportedException))]
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public void Write_ReadStream ()
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{
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cs = new CryptoStream (readStream, encryptor, CryptoStreamMode.Read);
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byte[] buffer = new byte [8];
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cs.Write (buffer, 0, 8);
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}
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[Test]
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[ExpectedException (typeof (NullReferenceException))]
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public void Write_NullBuffer ()
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{
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cs = new CryptoStream (writeStream, encryptor, CryptoStreamMode.Write);
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cs.Write (null, 0, 8);
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}
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[Test]
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public void Write_EmptyBuffer_ZeroCount ()
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{
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byte[] buffer = new byte [0];
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cs = new CryptoStream (writeStream, encryptor, CryptoStreamMode.Write);
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cs.Write (buffer, 0, 0);
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}
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[Test]
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[ExpectedException (typeof (ArgumentOutOfRangeException))]
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public void Write_NegativeOffset ()
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{
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byte[] buffer = new byte [8];
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cs = new CryptoStream (writeStream, encryptor, CryptoStreamMode.Write);
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cs.Write (buffer, -1, 8);
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}
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[Test]
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[ExpectedException (typeof (ArgumentException))]
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public void Write_OverflowOffset ()
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{
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byte[] buffer = new byte [8];
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cs = new CryptoStream (writeStream, encryptor, CryptoStreamMode.Write);
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cs.Write (buffer, Int32.MaxValue, 8);
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}
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[Test]
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public void Write_ZeroCount ()
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{
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byte[] buffer = new byte [8];
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cs = new CryptoStream (writeStream, encryptor, CryptoStreamMode.Write);
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cs.Write (buffer, 0, 0);
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}
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[Test]
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[ExpectedException (typeof (ArgumentOutOfRangeException))]
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public void Write_NegativeCount ()
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{
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byte[] buffer = new byte [8];
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cs = new CryptoStream (writeStream, encryptor, CryptoStreamMode.Write);
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cs.Write (buffer, 0, -1);
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}
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[Test]
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[ExpectedException (typeof (ArgumentException))]
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public void Write_InvalidOffset ()
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{
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DebugStream debug = new DebugStream ();
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byte[] buffer = new byte [8];
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cs = new CryptoStream (debug, encryptor, CryptoStreamMode.Write);
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cs.Write (buffer, 5, 4);
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}
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[Test]
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[ExpectedException (typeof (ArgumentException))]
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public void Write_OverflowCount ()
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{
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DebugStream debug = new DebugStream ();
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byte[] buffer = new byte [8];
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cs = new CryptoStream (debug, encryptor, CryptoStreamMode.Write);
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cs.Write (buffer, 0, Int32.MaxValue);
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}
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[Test]
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public void FullRoundtripRead ()
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{
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byte[] encrypted;
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using (DebugStream mem1 = new DebugStream ()) {
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byte[] toEncrypt = Encoding.Unicode.GetBytes ("Please encode me!");
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using (CryptoStream crypt = new CryptoStream (mem1, aes.CreateEncryptor (), CryptoStreamMode.Write)) {
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crypt.Write (toEncrypt, 0, toEncrypt.Length);
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crypt.FlushFinalBlock ();
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}
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encrypted = mem1.ToArray ();
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}
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using (DebugStream mem2 = new DebugStream (encrypted)) {
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byte[] buffer = new byte [1024];
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CryptoStream cr = new CryptoStream (mem2, aes.CreateDecryptor (), CryptoStreamMode.Read);
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int len = cr.Read (buffer, 0, buffer.Length);
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cr.Close ();
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Assert.AreEqual (34, len, "Full Length Read");
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Assert.AreEqual ("Please encode me!", Encoding.Unicode.GetString (buffer, 0, len), "Full Block Read");
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}
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}
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// bugzilla 46143 (adapted from test case by Joerg Rosenkranz)
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[Test]
|
|
public void PartialRoundtripRead ()
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{
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byte[] encrypted;
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using (DebugStream mem1 = new DebugStream ()) {
|
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byte[] toEncrypt = Encoding.Unicode.GetBytes ("Please encode me!");
|
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using (CryptoStream crypt = new CryptoStream (mem1, aes.CreateEncryptor (), CryptoStreamMode.Write)) {
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crypt.Write (toEncrypt, 0, toEncrypt.Length);
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crypt.FlushFinalBlock ();
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}
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encrypted = mem1.ToArray ();
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}
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using (DebugStream mem2 = new DebugStream (encrypted)) {
|
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byte[] buffer = new byte [1024];
|
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CryptoStream cr = new CryptoStream (mem2, aes.CreateDecryptor (), CryptoStreamMode.Read);
|
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int len = cr.Read (buffer, 0, 20);
|
|
cr.Clear ();
|
|
cr.Close ();
|
|
Assert.AreEqual (20, len, "Partial Length Read");
|
|
Assert.AreEqual ("Please enc", Encoding.Unicode.GetString (buffer, 0, len), "Partial Block Read");
|
|
}
|
|
}
|
|
|
|
// bugzilla: 40689 (adapted from test case by Henning Westerholt)
|
|
[Test]
|
|
public void WriteOnBlockWithFinal ()
|
|
{
|
|
byte[] desKey = {0, 1, 2, 3, 4, 5, 6, 7};
|
|
byte[] desIV = {0, 1, 2, 3, 4, 5, 6, 7};
|
|
DES des = DES.Create ();
|
|
|
|
MemoryStream msin = new MemoryStream ();
|
|
CryptoStream enc = new CryptoStream (msin, des.CreateEncryptor (desKey, desIV), CryptoStreamMode.Write);
|
|
byte[] data = new byte [2200];
|
|
enc.Write (data, 0, 2200);
|
|
enc.FlushFinalBlock ();
|
|
msin.Position = 0;
|
|
Assert.AreEqual (2208, msin.Length, "Encryped Write Length"); // 2200 + padding
|
|
|
|
MemoryStream msout = new MemoryStream ();
|
|
msout.SetLength (0);
|
|
|
|
byte[] tmp = new byte [1024];
|
|
long readlen = 0;
|
|
long totallen = msin.Length;
|
|
|
|
CryptoStream dec = new CryptoStream (msout, des.CreateDecryptor (desKey, desIV), CryptoStreamMode.Write);
|
|
int len = msin.Read (tmp, 0, 1024);
|
|
while (len > 0) {
|
|
dec.Write (tmp, 0, len);
|
|
readlen += len;
|
|
len = msin.Read (tmp, 0, 1024);
|
|
}
|
|
Assert.AreEqual (2200, msout.Length, "Decryped Write Length");
|
|
|
|
dec.Close ();
|
|
dec.Clear ();
|
|
msout.Close ();
|
|
msin.Close ();
|
|
|
|
Assert.AreEqual (2208, readlen, "Read Length"); // 2200 + padding
|
|
}
|
|
|
|
[Test]
|
|
public void PreGeneratedStreams ()
|
|
{
|
|
byte[] desKey = {0, 1, 2, 3, 4, 5, 6, 7};
|
|
byte[] desIV = {0, 1, 2, 3, 4, 5, 6, 7};
|
|
DES des = DES.Create ();
|
|
|
|
for (int i=0; i < 9; i++) {
|
|
MemoryStream msin = new MemoryStream ();
|
|
CryptoStream enc = new CryptoStream (msin, des.CreateEncryptor (desKey, desIV), CryptoStreamMode.Write);
|
|
byte[] data = new byte [i];
|
|
enc.Write (data, 0, i);
|
|
enc.FlushFinalBlock ();
|
|
|
|
string msg = "PreGeneratedStream #" + i;
|
|
string result = BitConverter.ToString (msin.ToArray ());
|
|
switch (i) {
|
|
case 0:
|
|
Assert.AreEqual ("92-C9-DB-45-30-0B-93-2F", result, msg);
|
|
break;
|
|
case 1:
|
|
Assert.AreEqual ("08-CF-A1-37-BD-56-D0-65", result, msg);
|
|
break;
|
|
case 2:
|
|
Assert.AreEqual ("58-87-D4-9B-2C-27-97-0C", result, msg);
|
|
break;
|
|
case 3:
|
|
Assert.AreEqual ("07-35-90-94-68-7D-51-FB", result, msg);
|
|
break;
|
|
case 4:
|
|
Assert.AreEqual ("BF-00-98-C5-20-71-D0-DB", result, msg);
|
|
break;
|
|
case 5:
|
|
Assert.AreEqual ("1A-55-C8-6E-C1-9B-31-82", result, msg);
|
|
break;
|
|
case 6:
|
|
Assert.AreEqual ("2D-2B-76-41-61-0E-00-0C", result, msg);
|
|
break;
|
|
case 7:
|
|
Assert.AreEqual ("DC-FF-73-D2-7F-D7-48-5D", result, msg);
|
|
break;
|
|
case 8:
|
|
Assert.AreEqual ("E1-B2-46-E5-A7-C7-4C-BC-0E-40-4A-FC-08-92-B1-EB", result, msg);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
private byte[] EmptyStream (PaddingMode mode)
|
|
{
|
|
SymmetricAlgorithm algo = Rijndael.Create ();
|
|
algo.Key = new byte[] { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F };
|
|
algo.IV = new byte[] { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F };
|
|
algo.Padding = mode;
|
|
MemoryStream ms = new MemoryStream ();
|
|
CryptoStream cs = new CryptoStream (ms, algo.CreateEncryptor(), CryptoStreamMode.Write);
|
|
cs.Write (ms.GetBuffer (), 0, (int) ms.Length);
|
|
cs.FlushFinalBlock ();
|
|
cs.Flush ();
|
|
return ms.ToArray ();
|
|
}
|
|
|
|
[Test]
|
|
public void EmptyStreamWithPaddingNone ()
|
|
{
|
|
byte[] result = EmptyStream (PaddingMode.None);
|
|
Assert.AreEqual (0, result.Length, "Result Length");
|
|
}
|
|
|
|
[Test]
|
|
public void EmptyStreamWithPaddingPKCS7 ()
|
|
{
|
|
byte[] expected = { 0x07, 0xFE, 0xEF, 0x74, 0xE1, 0xD5, 0x03, 0x6E, 0x90, 0x0E, 0xEE, 0x11, 0x8E, 0x94, 0x92, 0x93 };
|
|
byte[] result = EmptyStream (PaddingMode.PKCS7);
|
|
Assert.AreEqual (16, result.Length, "Result Length");
|
|
Assert.AreEqual (expected, result, "Result");
|
|
}
|
|
|
|
[Test]
|
|
public void EmptyStreamWithPaddingZeros ()
|
|
{
|
|
byte[] result = EmptyStream (PaddingMode.Zeros);
|
|
Assert.AreEqual (0, result.Length, "Result Length");
|
|
}
|
|
|
|
// bugzilla: 49323 (adapted from test case by Carlos Guzmán Álvarez)
|
|
[Test]
|
|
public void MultiblocksWithPartial ()
|
|
{
|
|
SymmetricAlgorithm tdes = new TripleDESCryptoServiceProvider ();
|
|
tdes.Key = new byte[] {161, 54, 179, 213, 89, 75, 130, 4, 186, 99, 158, 127, 19, 195, 175, 143, 79, 109, 25, 202, 237, 235, 62, 170};
|
|
tdes.IV = new byte[] {193, 227, 54, 132, 68, 172, 55, 91};
|
|
|
|
byte[] fragment = new byte[] {20, 0, 0, 12, 181, 134, 8, 230, 185, 75, 19, 129, 101, 142, 118, 190};
|
|
byte[] mac = new byte[] {42, 148, 229, 58, 185, 249, 154, 131, 157, 79, 176, 168, 143, 71, 0, 118, 5, 10, 95, 8};
|
|
|
|
// Encryption ( fragment + mac [+ padding + padding_length] )
|
|
MemoryStream ms = new MemoryStream ();
|
|
CryptoStream cs = new CryptoStream (ms, tdes.CreateEncryptor (), CryptoStreamMode.Write);
|
|
cs.Write (fragment, 0, fragment.Length);
|
|
cs.Write (mac, 0, mac.Length);
|
|
// Calculate padding_length
|
|
int fragmentLength = fragment.Length + mac.Length + 1;
|
|
int padding = (((fragmentLength / 8) * 8) + 8) - fragmentLength;
|
|
// Write padding length byte
|
|
cs.WriteByte ((byte)padding);
|
|
cs.Close ();
|
|
byte[] encrypted = ms.ToArray ();
|
|
byte[] expected = new byte[] { 0x9c, 0x99, 0x56, 0x8e, 0x75, 0x3e, 0x02, 0x95, 0x5b, 0x5c, 0x46, 0x8b, 0xcf, 0xf8, 0x27, 0x21, 0x53, 0x5f, 0x3d, 0xd8, 0x16, 0x95, 0x82, 0x3d, 0x88, 0x9b, 0x9a, 0x47, 0xda, 0x97, 0x90, 0x86, 0x50, 0x0e, 0x48, 0xee, 0xe7, 0x9b, 0x25, 0x41 };
|
|
Assert.AreEqual (expected, encrypted, "MultiblocksWithPartial");
|
|
}
|
|
|
|
// Adapted from Subba Rao Thirumoorthy email on mono-devel-list (december 2003)
|
|
private byte[] NonMultipleOfBlockSize_Encrypt (ICryptoTransform ct, byte[] data)
|
|
{
|
|
DebugStream stream = new DebugStream ();
|
|
CryptoStream CryptStream = new CryptoStream (stream, ct, CryptoStreamMode.Write);
|
|
|
|
int len = 0;
|
|
long myLength = 0;
|
|
byte[] Buffer = new byte [1024];
|
|
|
|
DebugStream fout = new DebugStream (data);
|
|
while (myLength < data.Length) {
|
|
len = fout.Read (Buffer, 0, 1023);
|
|
if (len == 0)
|
|
break;
|
|
CryptStream.Write (Buffer, 0, len);
|
|
CryptStream.Flush ();
|
|
myLength = myLength + len;
|
|
}
|
|
CryptStream.FlushFinalBlock ();
|
|
// we must ensure that the result is correct
|
|
Assert.AreEqual (64, len, "Length(final)");
|
|
byte[] result = stream.ToArray ();
|
|
string end = BitConverter.ToString (result, 65520, 16);
|
|
Assert.AreEqual ("04-70-19-1D-28-C5-BD-9A-23-C6-60-E2-28-96-38-65", end, "End part");
|
|
|
|
CryptStream.Close();
|
|
stream.Close();
|
|
return result;
|
|
}
|
|
|
|
private byte[] NonMultipleOfBlockSize_Decrypt (ICryptoTransform ct, byte[] data)
|
|
{
|
|
DebugStream stream = new DebugStream (data);
|
|
CryptoStream CryptStream = new CryptoStream (stream, ct, CryptoStreamMode.Read);
|
|
|
|
int len = 0;
|
|
long myLength = 0;
|
|
byte[] Buffer = new Byte [1024];
|
|
|
|
DebugStream fout = new DebugStream ();
|
|
// each returned block must be 1023 bytes long
|
|
// even if this isn't a multiple of the block size
|
|
while ((len = CryptStream.Read (Buffer, 0, 1023)) != 0) {
|
|
fout.Write (Buffer, 0, len);
|
|
fout.Flush ();
|
|
myLength = myLength + len;
|
|
}
|
|
|
|
byte[] result = fout.ToArray ();
|
|
CryptStream.Close ();
|
|
stream.Close ();
|
|
return result;
|
|
}
|
|
|
|
[Test]
|
|
public void NonMultipleOfBlockSize ()
|
|
{
|
|
byte[] key = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16 };
|
|
byte[] iv = { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16 };
|
|
byte[] data = new byte [65536];
|
|
|
|
RijndaelManaged aes = new RijndaelManaged ();
|
|
ICryptoTransform encryptor = aes.CreateEncryptor (key, iv);
|
|
byte[] encdata = NonMultipleOfBlockSize_Encrypt (encryptor, data);
|
|
Assert.AreEqual ((data.Length + (aes.BlockSize >> 3)), encdata.Length, "Encrypted Data Length");
|
|
|
|
ICryptoTransform decryptor = aes.CreateDecryptor (key, iv);
|
|
byte[] decdata = NonMultipleOfBlockSize_Decrypt (decryptor, encdata);
|
|
Assert.AreEqual (data.Length, decdata.Length, "Decrypted Data Length");
|
|
|
|
int i = 0;
|
|
bool b = true;
|
|
while (b && (i < data.Length)) {
|
|
b = (data [i] == decdata [i]);
|
|
i++;
|
|
}
|
|
Assert.IsTrue (b, "NonMultipleOfBlockSize");
|
|
}
|
|
|
|
// bugzilla: 51322 - indirectly related but it explains why my first (unapplied) patch didn't work
|
|
[Test]
|
|
public void DecryptPartial_TransformFinalBlock_required ()
|
|
{
|
|
byte[] key = {0, 1, 2, 3, 4, 5, 6, 7};
|
|
byte[] iv = {0, 1, 2, 3, 4, 5, 6, 7};
|
|
DES des = DES.Create ();
|
|
|
|
byte[] data = Encoding.Unicode.GetBytes ("ximian"); // 12 bytes, 1.5 DES block size
|
|
DebugStream encrypted = new DebugStream ();
|
|
cs = new CryptoStream (encrypted, des.CreateEncryptor (key, iv), CryptoStreamMode.Write);
|
|
cs.Write (data, 0, data.Length);
|
|
cs.Close ();
|
|
|
|
data = encrypted.ToArray ();
|
|
DebugStream decrypted = new DebugStream (data);
|
|
cs = new CryptoStream (decrypted, des.CreateDecryptor (key, iv), CryptoStreamMode.Read);
|
|
int len = cs.Read (data, 0, data.Length);
|
|
cs.Close ();
|
|
Assert.AreEqual (12, len, "Length");
|
|
Assert.AreEqual ("ximian", Encoding.Unicode.GetString (data, 0, len), "Unicode DES Roundtrip");
|
|
}
|
|
|
|
[Test]
|
|
public void DecryptPartial_TransformFinalBlock_2Pass ()
|
|
{
|
|
byte[] key = {0, 1, 2, 3, 4, 5, 6, 7};
|
|
byte[] iv = {0, 1, 2, 3, 4, 5, 6, 7};
|
|
DES des = DES.Create ();
|
|
|
|
byte[] data = Encoding.Unicode.GetBytes ("ximian"); // 12 bytes, 1.5 DES block size
|
|
DebugStream encrypted = new DebugStream ();
|
|
cs = new CryptoStream (encrypted, des.CreateEncryptor (key, iv), CryptoStreamMode.Write);
|
|
cs.Write (data, 0, data.Length);
|
|
cs.Close ();
|
|
|
|
data = encrypted.ToArray ();
|
|
DebugStream decrypted = new DebugStream (data);
|
|
cs = new CryptoStream (decrypted, des.CreateDecryptor (key, iv), CryptoStreamMode.Read);
|
|
int len = cs.Read (data, 0, 6);
|
|
Assert.AreEqual (6, len, "Length (1st pass)");
|
|
Assert.AreEqual ("xim", Encoding.Unicode.GetString (data, 0, len), "Partial DES Roundtrip");
|
|
len += cs.Read (data, 6, 8);
|
|
Assert.AreEqual (12, len, "Length (1st+2nd)");
|
|
Assert.AreEqual ("ximian", Encoding.Unicode.GetString (data, 0, len), "Full DES Roundtrip");
|
|
cs.Close ();
|
|
}
|
|
|
|
// based on http://www.c-sharpcorner.com/Code/2002/May/FileEncryption.asp
|
|
[Test]
|
|
public void WriteByteReadByte ()
|
|
{
|
|
DebugStream original = new DebugStream (Encoding.Unicode.GetBytes ("ximian"));
|
|
|
|
DebugStream encrypted = new DebugStream ();
|
|
byte[] key = {0, 1, 2, 3, 4, 5, 6, 7};
|
|
byte[] iv = {0, 1, 2, 3, 4, 5, 6, 7};
|
|
DES des = DES.Create ();
|
|
cs = new CryptoStream (encrypted, des.CreateEncryptor (key, iv), CryptoStreamMode.Write);
|
|
|
|
int data;
|
|
while ((data = original.ReadByte ()) != -1)
|
|
cs.WriteByte((byte) data);
|
|
cs.Close ();
|
|
|
|
byte[] result = encrypted.ToArray ();
|
|
Assert.AreEqual ("18-EA-93-3F-20-86-D2-AA-78-02-D7-6F-E4-47-17-9C", BitConverter.ToString (result), "Encrypted");
|
|
|
|
encrypted = new DebugStream (result);
|
|
DebugStream decrypted = new DebugStream ();
|
|
cs = new CryptoStream (encrypted, des.CreateDecryptor (key, iv), CryptoStreamMode.Read);
|
|
|
|
while ((data = cs.ReadByte ()) != -1)
|
|
decrypted.WriteByte((byte) data);
|
|
cs.Close ();
|
|
decrypted.Close ();
|
|
|
|
Assert.AreEqual ("ximian", Encoding.Unicode.GetString (decrypted.ToArray ()), "W/R Byte Roundtrip");
|
|
}
|
|
|
|
// based http://www.4guysfromrolla.com/webtech/090501-1.shtml
|
|
|
|
public string EncryptData (ICryptoTransform des, string strData)
|
|
{
|
|
strData = String.Format("{0,5:00000}" + strData, strData.Length);
|
|
byte[] data = Encoding.ASCII.GetBytes (strData);
|
|
|
|
MemoryStream mStream = new MemoryStream (data);
|
|
CryptoStream cs = new CryptoStream (mStream, des, CryptoStreamMode.Read);
|
|
MemoryStream mOut = new MemoryStream ();
|
|
|
|
int bytesRead;
|
|
byte[] output = new byte [1024];
|
|
do {
|
|
bytesRead = cs.Read (output, 0, 1024);
|
|
if (bytesRead != 0)
|
|
mOut.Write (output, 0, bytesRead);
|
|
}
|
|
while (bytesRead > 0);
|
|
|
|
return Convert.ToBase64String (mOut.ToArray ());
|
|
}
|
|
|
|
public string DecryptData (ICryptoTransform des, string strData)
|
|
{
|
|
MemoryStream mOut = new MemoryStream ();
|
|
byte[] data = Convert.FromBase64String (strData);
|
|
CryptoStream cs = new CryptoStream (mOut, des, CryptoStreamMode.Write);
|
|
cs.Write (data, 0, (int)data.Length);
|
|
cs.FlushFinalBlock ();
|
|
return Encoding.ASCII.GetString (mOut.ToArray ()).Substring (5);
|
|
}
|
|
|
|
[Test]
|
|
public void EncryptOnRead ()
|
|
{
|
|
SHA1 sha = SHA1.Create ();
|
|
byte[] vector = sha.ComputeHash (Encoding.ASCII.GetBytes ("s3kr3t"));
|
|
byte[] key = new byte [8];
|
|
Buffer.BlockCopy (vector, 0, key, 0, key.Length);
|
|
byte[] iv = new byte [8];
|
|
Buffer.BlockCopy (vector, 8, iv, 0, iv.Length);
|
|
|
|
DES des = DES.Create ();
|
|
|
|
StringBuilder sb = new StringBuilder ();
|
|
sb.Append ("a");
|
|
string data = sb.ToString ();
|
|
string encdata = EncryptData (des.CreateEncryptor (key, iv), data);
|
|
string decdata = DecryptData (des.CreateDecryptor (key, iv), encdata);
|
|
Assert.AreEqual ("9YVfvrh5yj0=", encdata, "Encrypt-" + data);
|
|
Assert.AreEqual (data, decdata, "Decrypt-" + data);
|
|
|
|
sb.Append ("a");
|
|
data = sb.ToString ();
|
|
encdata = EncryptData (des.CreateEncryptor (key, iv), data);
|
|
decdata = DecryptData (des.CreateDecryptor (key, iv), encdata);
|
|
Assert.AreEqual ("qNe4d0UlkU8=", encdata, "Encrypt-" + data);
|
|
Assert.AreEqual (data, decdata, "Decrypt-" + data);
|
|
|
|
sb.Append ("a");
|
|
data = sb.ToString ();
|
|
encdata = EncryptData (des.CreateEncryptor (key, iv), data);
|
|
decdata = DecryptData (des.CreateDecryptor (key, iv), encdata);
|
|
Assert.AreEqual ("OcernYAQ1NAME/Gny+ZuaA==", encdata, "Encrypt-" + data);
|
|
Assert.AreEqual (data, decdata, "Decrypt-" + data);
|
|
|
|
sb.Append ("a");
|
|
data = sb.ToString ();
|
|
encdata = EncryptData (des.CreateEncryptor (key, iv), data);
|
|
decdata = DecryptData (des.CreateDecryptor (key, iv), encdata);
|
|
Assert.AreEqual ("H5UveR2lds1T+IWN4pks2Q==", encdata, "Encrypt-" + data);
|
|
Assert.AreEqual (data, decdata, "Decrypt-" + data);
|
|
|
|
sb.Append ("a");
|
|
data = sb.ToString ();
|
|
encdata = EncryptData (des.CreateEncryptor (key, iv), data);
|
|
decdata = DecryptData (des.CreateDecryptor (key, iv), encdata);
|
|
Assert.AreEqual ("dDQ3HAVtTbiRwwUqWANaeA==", encdata, "Encrypt-" + data);
|
|
Assert.AreEqual (data, decdata, "Decrypt-" + data);
|
|
|
|
sb.Append ("a");
|
|
data = sb.ToString ();
|
|
encdata = EncryptData (des.CreateEncryptor (key, iv), data);
|
|
decdata = DecryptData (des.CreateDecryptor (key, iv), encdata);
|
|
Assert.AreEqual ("At1r7dVDjJlQidf4QzCNkw==", encdata, "Encrypt-" + data);
|
|
Assert.AreEqual (data, decdata, "Decrypt-" + data);
|
|
|
|
sb.Append ("a");
|
|
data = sb.ToString ();
|
|
encdata = EncryptData (des.CreateEncryptor (key, iv), data);
|
|
decdata = DecryptData (des.CreateDecryptor (key, iv), encdata);
|
|
Assert.AreEqual ("DFDJWJGaNrFVBDXovsq1ew==", encdata, "Encrypt-" + data);
|
|
Assert.AreEqual (data, decdata, "Decrypt-" + data);
|
|
|
|
sb.Append ("a");
|
|
data = sb.ToString ();
|
|
encdata = EncryptData (des.CreateEncryptor (key, iv), data);
|
|
decdata = DecryptData (des.CreateDecryptor (key, iv), encdata);
|
|
Assert.AreEqual ("gM040QGMPOBj3u1lEK4XHQ==", encdata, "Encrypt-" + data);
|
|
Assert.AreEqual (data, decdata, "Decrypt-" + data);
|
|
|
|
sb.Append ("a");
|
|
data = sb.ToString ();
|
|
encdata = EncryptData (des.CreateEncryptor (key, iv), data);
|
|
decdata = DecryptData (des.CreateDecryptor (key, iv), encdata);
|
|
Assert.AreEqual ("P5hRUhrxOWFX0ER/IjJL/Q==", encdata, "Encrypt-" + data);
|
|
Assert.AreEqual (data, decdata, "Decrypt-" + data);
|
|
|
|
sb.Append ("a");
|
|
data = sb.ToString ();
|
|
encdata = EncryptData (des.CreateEncryptor (key, iv), data);
|
|
decdata = DecryptData (des.CreateDecryptor (key, iv), encdata);
|
|
Assert.AreEqual ("uDIaQ1uXtWUIboGFLt306Q==", encdata, "Encrypt-" + data);
|
|
Assert.AreEqual (data, decdata, "Decrypt-" + data);
|
|
|
|
sb.Append ("a");
|
|
data = sb.ToString ();
|
|
encdata = EncryptData (des.CreateEncryptor (key, iv), data);
|
|
decdata = DecryptData (des.CreateDecryptor (key, iv), encdata);
|
|
Assert.AreEqual ("giJKTXfad5Z8hebhXtYZ4hmKX/EC8w6x", encdata, "Encrypt-" + data);
|
|
Assert.AreEqual (data, decdata, "Decrypt-" + data);
|
|
|
|
sb.Append ("a");
|
|
data = sb.ToString ();
|
|
encdata = EncryptData (des.CreateEncryptor (key, iv), data);
|
|
decdata = DecryptData (des.CreateDecryptor (key, iv), encdata);
|
|
Assert.AreEqual ("lBehBplIrjjrlIrMjYcNz1DOoXLHjZdn", encdata, "Encrypt-" + data);
|
|
Assert.AreEqual (data, decdata, "Decrypt-" + data);
|
|
|
|
sb.Append ("a");
|
|
data = sb.ToString ();
|
|
encdata = EncryptData (des.CreateEncryptor (key, iv), data);
|
|
decdata = DecryptData (des.CreateDecryptor (key, iv), encdata);
|
|
Assert.AreEqual ("2elWrUnjmsAOpo2s4voJyZXEJ/rtKB7P", encdata, "Encrypt-" + data);
|
|
Assert.AreEqual (data, decdata, "Decrypt-" + data);
|
|
|
|
sb.Append ("a");
|
|
data = sb.ToString ();
|
|
encdata = EncryptData (des.CreateEncryptor (key, iv), data);
|
|
decdata = DecryptData (des.CreateDecryptor (key, iv), encdata);
|
|
Assert.AreEqual ("GB3BaIZGf9K+T82j7T8Fri2rQ2/YUdSe", encdata, "Encrypt-" + data);
|
|
Assert.AreEqual (data, decdata, "Decrypt-" + data);
|
|
|
|
sb.Append ("a");
|
|
data = sb.ToString ();
|
|
encdata = EncryptData (des.CreateEncryptor (key, iv), data);
|
|
decdata = DecryptData (des.CreateDecryptor (key, iv), encdata);
|
|
Assert.AreEqual ("Gc+wkJL+CVjdJchgcIoi8dkH2BVpHJgB", encdata, "Encrypt-" + data);
|
|
Assert.AreEqual (data, decdata, "Decrypt-" + data);
|
|
|
|
sb.Append ("a");
|
|
data = sb.ToString ();
|
|
encdata = EncryptData (des.CreateEncryptor (key, iv), data);
|
|
decdata = DecryptData (des.CreateDecryptor (key, iv), encdata);
|
|
Assert.AreEqual ("loeuyII/PvWb91M4pFVkyaPxQoQVYpNb", encdata, "Encrypt-" + data);
|
|
Assert.AreEqual (data, decdata, "Decrypt-" + data);
|
|
|
|
sb.Append ("a");
|
|
data = sb.ToString ();
|
|
encdata = EncryptData (des.CreateEncryptor (key, iv), data);
|
|
decdata = DecryptData (des.CreateDecryptor (key, iv), encdata);
|
|
Assert.AreEqual ("PHXmi/sxNIgApXAfdm+Bf54/nCM//N8o", encdata, "Encrypt-" + data);
|
|
Assert.AreEqual (data, decdata, "Decrypt-" + data);
|
|
|
|
sb.Append ("a");
|
|
data = sb.ToString ();
|
|
encdata = EncryptData (des.CreateEncryptor (key, iv), data);
|
|
decdata = DecryptData (des.CreateDecryptor (key, iv), encdata);
|
|
Assert.AreEqual ("xpb+wj/8LmH2ScTg3OU4JOsE5Owj6flF", encdata, "Encrypt-" + data);
|
|
Assert.AreEqual (data, decdata, "Decrypt-" + data);
|
|
|
|
sb.Append ("a");
|
|
data = sb.ToString ();
|
|
encdata = EncryptData (des.CreateEncryptor (key, iv), data);
|
|
decdata = DecryptData (des.CreateDecryptor (key, iv), encdata);
|
|
Assert.AreEqual ("WJz4VfsZ2emzhYWoSf+PNBDpHooxEregqMWnzm4gcqU=", encdata, "Encrypt-" + data);
|
|
Assert.AreEqual (data, decdata, "Decrypt-" + data);
|
|
|
|
sb.Append ("a");
|
|
data = sb.ToString ();
|
|
encdata = EncryptData (des.CreateEncryptor (key, iv), data);
|
|
decdata = DecryptData (des.CreateDecryptor (key, iv), encdata);
|
|
Assert.AreEqual ("PaouZu1iOKbCMRJSu04y/kB+TcOk4yp8K2BOGDs1PPE=", encdata, "Encrypt-" + data);
|
|
Assert.AreEqual (data, decdata, "Decrypt-" + data);
|
|
|
|
sb.Append ("a");
|
|
data = sb.ToString ();
|
|
encdata = EncryptData (des.CreateEncryptor (key, iv), data);
|
|
decdata = DecryptData (des.CreateDecryptor (key, iv), encdata);
|
|
Assert.AreEqual ("qbTDs4dFy7eERdn5vV7JRPk2/m9smtwvZjA6+TmGlkI=", encdata, "Encrypt-" + data);
|
|
Assert.AreEqual (data, decdata, "Decrypt-" + data);
|
|
|
|
sb.Append ("a");
|
|
data = sb.ToString ();
|
|
encdata = EncryptData (des.CreateEncryptor (key, iv), data);
|
|
decdata = DecryptData (des.CreateDecryptor (key, iv), encdata);
|
|
Assert.AreEqual ("f2FsphcpM7Fu90S5V17ptly44lL4GvFCCaFdnnU4twk=", encdata, "Encrypt-" + data);
|
|
Assert.AreEqual (data, decdata, "Decrypt-" + data);
|
|
|
|
sb.Append ("a");
|
|
data = sb.ToString ();
|
|
encdata = EncryptData (des.CreateEncryptor (key, iv), data);
|
|
decdata = DecryptData (des.CreateDecryptor (key, iv), encdata);
|
|
Assert.AreEqual ("imD+ntHsUmp9ALJedzC1JmAJY0r2O4KkP8271+XuG4g=", encdata, "Encrypt-" + data);
|
|
Assert.AreEqual (data, decdata, "Decrypt-" + data);
|
|
|
|
sb.Append ("a");
|
|
data = sb.ToString ();
|
|
encdata = EncryptData (des.CreateEncryptor (key, iv), data);
|
|
decdata = DecryptData (des.CreateDecryptor (key, iv), encdata);
|
|
Assert.AreEqual ("80QLLUmHwx1fcEYGeFz1WXlS13kUy994sQLI6GhcjuM=", encdata, "Encrypt-" + data);
|
|
Assert.AreEqual (data, decdata, "Decrypt-" + data);
|
|
|
|
sb.Append ("a");
|
|
data = sb.ToString ();
|
|
encdata = EncryptData (des.CreateEncryptor (key, iv), data);
|
|
decdata = DecryptData (des.CreateDecryptor (key, iv), encdata);
|
|
Assert.AreEqual ("DtIIlj8BCOppmIgQ9AEdUj7pBB49S/9Q38kbWLjwiVs=", encdata, "Encrypt-" + data);
|
|
Assert.AreEqual (data, decdata, "Decrypt-" + data);
|
|
|
|
sb.Append ("a");
|
|
data = sb.ToString ();
|
|
encdata = EncryptData (des.CreateEncryptor (key, iv), data);
|
|
decdata = DecryptData (des.CreateDecryptor (key, iv), encdata);
|
|
Assert.AreEqual ("LNkprYaaUFtyan204OzX+a2pzOb/Pg5WXzXJ6WWB1rQ=", encdata, "Encrypt-" + data);
|
|
Assert.AreEqual (data, decdata, "Decrypt-" + data);
|
|
|
|
sb.Append ("a");
|
|
data = sb.ToString ();
|
|
encdata = EncryptData (des.CreateEncryptor (key, iv), data);
|
|
decdata = DecryptData (des.CreateDecryptor (key, iv), encdata);
|
|
Assert.AreEqual ("FRgx9m2lT2PxtYSIdRwc+SznJetNiRk1MEIZDl3D13pvo2yOtJ1MSQ==", encdata, "Encrypt-" + data);
|
|
Assert.AreEqual (data, decdata, "Decrypt-" + data);
|
|
|
|
sb.Append ("a");
|
|
data = sb.ToString ();
|
|
encdata = EncryptData (des.CreateEncryptor (key, iv), data);
|
|
decdata = DecryptData (des.CreateDecryptor (key, iv), encdata);
|
|
Assert.AreEqual ("V7JlnpJscrdIpX4z5S+/Q5WDjKzK4aB5TiqI3JZOYJ+KE1CWQNNeow==", encdata, "Encrypt-" + data);
|
|
Assert.AreEqual (data, decdata, "Decrypt-" + data);
|
|
|
|
sb.Append ("a");
|
|
data = sb.ToString ();
|
|
encdata = EncryptData (des.CreateEncryptor (key, iv), data);
|
|
decdata = DecryptData (des.CreateDecryptor (key, iv), encdata);
|
|
Assert.AreEqual ("wVwPv1c2KQynbwiOBCAhmQlReOQT52qFR34AX4dtjEeQ1oCQ1N1tHg==", encdata, "Encrypt-" + data);
|
|
Assert.AreEqual (data, decdata, "Decrypt-" + data);
|
|
|
|
sb.Append ("a");
|
|
data = sb.ToString ();
|
|
encdata = EncryptData (des.CreateEncryptor (key, iv), data);
|
|
decdata = DecryptData (des.CreateDecryptor (key, iv), encdata);
|
|
Assert.AreEqual ("Zi+G0yfmuFjSjP455pjVeKBDDWB4qvTb0K0h20UtflrYG6wcWqUzDw==", encdata, "Encrypt-" + data);
|
|
Assert.AreEqual (data, decdata, "Decrypt-" + data);
|
|
|
|
sb.Append ("a");
|
|
data = sb.ToString ();
|
|
encdata = EncryptData (des.CreateEncryptor (key, iv), data);
|
|
decdata = DecryptData (des.CreateDecryptor (key, iv), encdata);
|
|
Assert.AreEqual ("0hGoonZ8jrLhMNDKBuWrlvFnq15ZLvnyq+Ilq8r4aYUEDxttQMwi5w==", encdata, "Encrypt-" + data);
|
|
Assert.AreEqual (data, decdata, "Decrypt-" + data);
|
|
}
|
|
|
|
// based on System.Security assembly XmlDsigBase64TransformTest
|
|
|
|
[Test]
|
|
public void FromBase64_Write ()
|
|
{
|
|
string expected = "http://www.go-mono.com/";
|
|
byte[] data = Encoding.UTF8.GetBytes (expected);
|
|
string temp = Convert.ToBase64String (data, 0, data.Length);
|
|
data = Encoding.UTF8.GetBytes (temp);
|
|
|
|
DebugStream debug = new DebugStream ();
|
|
ICryptoTransform base64 = new FromBase64Transform ();
|
|
cs = new CryptoStream (debug, base64, CryptoStreamMode.Write);
|
|
cs.Write (data, 0, data.Length);
|
|
cs.FlushFinalBlock ();
|
|
byte[] encoded = debug.ToArray ();
|
|
|
|
string result = Encoding.UTF8.GetString (encoded);
|
|
Assert.AreEqual (expected, result, "FromBase64_Write");
|
|
}
|
|
|
|
[Test]
|
|
public void FromBase64_Read ()
|
|
{
|
|
byte[] original = Encoding.UTF8.GetBytes ("aHR0cDovL3d3dy5nby1tb25vLmNvbS8=");
|
|
DebugStream debug = new DebugStream (original);
|
|
|
|
ICryptoTransform base64 = new FromBase64Transform ();
|
|
cs = new CryptoStream (debug, base64, CryptoStreamMode.Read);
|
|
|
|
byte[] data = new byte [1024];
|
|
int length = cs.Read (data, 0, data.Length);
|
|
cs.Close ();
|
|
|
|
string result = Encoding.UTF8.GetString (data, 0, length);
|
|
Assert.AreEqual ("http://www.go-mono.com/", result, "ToBase64_Read");
|
|
}
|
|
|
|
[Test]
|
|
public void ToBase64_Write ()
|
|
{
|
|
byte[] data = Encoding.UTF8.GetBytes ("http://www.go-mono.com/");
|
|
|
|
DebugStream debug = new DebugStream ();
|
|
ICryptoTransform base64 = new ToBase64Transform ();
|
|
cs = new CryptoStream (debug, base64, CryptoStreamMode.Write);
|
|
cs.Write (data, 0, data.Length);
|
|
cs.FlushFinalBlock ();
|
|
byte[] encoded = debug.ToArray ();
|
|
|
|
string result = Encoding.UTF8.GetString (encoded);
|
|
Assert.AreEqual ("aHR0cDovL3d3dy5nby1tb25vLmNvbS8=", result, "ToBase64_Write");
|
|
}
|
|
|
|
[Test]
|
|
public void ToBase64_Read ()
|
|
{
|
|
byte[] original = Encoding.UTF8.GetBytes ("http://www.go-mono.com/");
|
|
DebugStream debug = new DebugStream (original);
|
|
|
|
ICryptoTransform base64 = new ToBase64Transform ();
|
|
cs = new CryptoStream (debug, base64, CryptoStreamMode.Read);
|
|
|
|
byte[] data = new byte [1024];
|
|
int length = cs.Read (data, 0, data.Length);
|
|
cs.Close ();
|
|
|
|
string result = Encoding.UTF8.GetString (data, 0, length);
|
|
Assert.AreEqual ("aHR0cDovL3d3dy5nby1tb25vLmNvbS8=", result, "ToBase64_Read");
|
|
}
|
|
|
|
// Cascaded CryptoStream - like sample in book .NET Framework Security, chapter 30
|
|
|
|
[Test]
|
|
public void CascadedCryptoStream_Write ()
|
|
{
|
|
DebugStream debug = new DebugStream ();
|
|
|
|
// calculate both the hash (before encryption) and encrypt in one Write operation
|
|
byte[] key = {0, 1, 2, 3, 4, 5, 6, 7};
|
|
byte[] iv = {0, 1, 2, 3, 4, 5, 6, 7};
|
|
DES des = DES.Create ();
|
|
CryptoStream cse = new CryptoStream (debug, des.CreateEncryptor (key, iv), CryptoStreamMode.Write);
|
|
|
|
MD5 hash = MD5.Create ();
|
|
CryptoStream csh = new CryptoStream (cse, hash, CryptoStreamMode.Write);
|
|
|
|
byte[] data = Encoding.UTF8.GetBytes ("http://www.go-mono.com/");
|
|
csh.Write (data, 0, data.Length);
|
|
csh.FlushFinalBlock ();
|
|
|
|
byte[] result = debug.ToArray ();
|
|
Assert.AreEqual ("8C-24-76-74-09-79-2B-D3-47-C3-32-F5-F3-1A-5E-57-04-33-2E-B8-50-77-B2-A1", BitConverter.ToString (result), "Encrypted");
|
|
byte[] digest = hash.Hash;
|
|
Assert.AreEqual ("71-04-12-D1-95-01-CF-F9-8D-8F-F8-0D-F9-AA-11-7D", BitConverter.ToString (digest), "Hash");
|
|
}
|
|
[Test]
|
|
public void CascadedCryptoStream_Read ()
|
|
{
|
|
byte[] encdata = new byte[] { 0x8C, 0x24, 0x76, 0x74, 0x09, 0x79, 0x2B, 0xD3, 0x47, 0xC3, 0x32, 0xF5, 0xF3, 0x1A, 0x5E, 0x57, 0x04, 0x33, 0x2E, 0xB8, 0x50, 0x77, 0xB2, 0xA1 };
|
|
DebugStream debug = new DebugStream (encdata);
|
|
|
|
// decrypt data and validate its hash in one Read operation
|
|
byte[] key = {0, 1, 2, 3, 4, 5, 6, 7};
|
|
byte[] iv = {0, 1, 2, 3, 4, 5, 6, 7};
|
|
DES des = DES.Create ();
|
|
CryptoStream csd = new CryptoStream (debug, des.CreateDecryptor (key, iv), CryptoStreamMode.Read);
|
|
|
|
MD5 hash = MD5.Create ();
|
|
CryptoStream csh = new CryptoStream (csd, hash, CryptoStreamMode.Read);
|
|
|
|
byte[] data = new byte [1024];
|
|
int length = csh.Read (data, 0, data.Length);
|
|
csh.Close ();
|
|
|
|
string result = Encoding.UTF8.GetString (data, 0, length);
|
|
Assert.AreEqual ("http://www.go-mono.com/", result, "Decrypted");
|
|
byte[] digest = hash.Hash;
|
|
Assert.AreEqual ("71-04-12-D1-95-01-CF-F9-8D-8F-F8-0D-F9-AA-11-7D", BitConverter.ToString (digest), "Hash Validation");
|
|
}
|
|
|
|
// bugzilla: 60573 - the number of block is not reduced for encryptors
|
|
|
|
[Test]
|
|
public void EncryptorWriteBlocks ()
|
|
{
|
|
DebugStream debug = new DebugStream ();
|
|
|
|
byte[] key = {0, 1, 2, 3, 4, 5, 6, 7};
|
|
byte[] iv = {0, 1, 2, 3, 4, 5, 6, 7};
|
|
DES des = DES.Create ();
|
|
CryptoStream cse = new CryptoStream (debug, des.CreateEncryptor (key, iv), CryptoStreamMode.Write);
|
|
|
|
byte[] data = new byte [64];
|
|
cse.Write (data, 0, 64);
|
|
Assert.AreEqual (64, debug.Length, "Length");
|
|
cse.Close ();
|
|
}
|
|
|
|
[Test]
|
|
public void DecryptorWriteBlocks ()
|
|
{
|
|
DebugStream debug = new DebugStream ();
|
|
|
|
byte[] key = {0, 1, 2, 3, 4, 5, 6, 7};
|
|
byte[] iv = {0, 1, 2, 3, 4, 5, 6, 7};
|
|
DES des = DES.Create ();
|
|
CryptoStream csd = new CryptoStream (debug, des.CreateDecryptor (key, iv), CryptoStreamMode.Write);
|
|
|
|
byte[] data = new byte [64] { 0xE1, 0xB2, 0x46, 0xE5, 0xA7, 0xC7, 0x4C, 0xBC, 0xD5, 0xF0, 0x8E, 0x25, 0x3B, 0xFA, 0x23, 0x80, 0x03, 0x16, 0x18, 0x17, 0xA3, 0x59, 0xBA, 0xAC, 0xFC, 0x47, 0x57, 0x2A, 0xF9, 0x44, 0x07, 0x84, 0x20, 0x74, 0x06, 0x38, 0xC2, 0xF3, 0xA1, 0xCE, 0x8C, 0x73, 0xB1, 0xE3, 0x75, 0x03, 0x66, 0x89, 0xF0, 0x4E, 0x98, 0x68, 0xB1, 0xBD, 0x85, 0x25, 0xFF, 0x4B, 0x11, 0x74, 0xEF, 0x14, 0xC8, 0xE9 };
|
|
csd.Write (data, 0, 64);
|
|
Assert.AreEqual (56, debug.Length, "Length");
|
|
// last block is kept for later processing
|
|
}
|
|
|
|
[Test]
|
|
public void PaddingModeNone ()
|
|
{
|
|
byte[] Key = new byte [16];
|
|
byte[] IV = new byte [16];
|
|
byte[] Buffer = new byte [64];
|
|
|
|
Rijndael alg = Rijndael.Create ();
|
|
alg.Mode = CipherMode.CBC;
|
|
alg.Padding = PaddingMode.None;
|
|
|
|
MemoryStream cms = new MemoryStream ();
|
|
ICryptoTransform ct = alg.CreateDecryptor (Key, IV);
|
|
CryptoStream cs = new CryptoStream (cms, ct, CryptoStreamMode.Write);
|
|
cs.Write (Buffer, 0, 64);
|
|
cs.Close ();
|
|
|
|
Assert.AreEqual (64, cms.ToArray ().Length, "Length");
|
|
}
|
|
|
|
private void WriteByte (PaddingMode mode, bool padded)
|
|
{
|
|
byte[] Key = new byte[16];
|
|
byte[] IV = new byte[16];
|
|
byte[] Buffer = new byte[64];
|
|
|
|
Rijndael alg = Rijndael.Create ();
|
|
alg.Mode = CipherMode.CBC;
|
|
alg.Padding = mode;
|
|
|
|
MemoryStream cms = new MemoryStream ();
|
|
ICryptoTransform ct = alg.CreateEncryptor (Key, IV);
|
|
CryptoStream cs = new CryptoStream (cms, ct, CryptoStreamMode.Write);
|
|
for (int i = 0; i < Buffer.Length; i++)
|
|
cs.WriteByte (Buffer[i]);
|
|
cs.Close ();
|
|
|
|
byte[] result = cms.ToArray ();
|
|
// if padded then add one block, if not then it's the original length
|
|
int len = padded ? 80: 64;
|
|
Assert.AreEqual (len, result.Length, mode.ToString () + ".Encrypted.Length");
|
|
|
|
cms = new MemoryStream ();
|
|
ct = alg.CreateDecryptor (Key, IV);
|
|
cs = new CryptoStream (cms, ct, CryptoStreamMode.Write);
|
|
for (int i = 0; i < result.Length; i++)
|
|
cs.WriteByte (result[i]);
|
|
cs.Close ();
|
|
|
|
byte[] plaintext = cms.ToArray ();
|
|
Assert.AreEqual (64, plaintext.Length, mode.ToString () + ".Decrypted.Length");
|
|
|
|
Assert.AreEqual (Buffer, plaintext, mode.ToString () + ".Date");
|
|
}
|
|
|
|
[Test]
|
|
public void WriteByte ()
|
|
{
|
|
WriteByte (PaddingMode.None, false);
|
|
WriteByte (PaddingMode.Zeros, false);
|
|
WriteByte (PaddingMode.PKCS7, true); // related to bug #81597
|
|
WriteByte (PaddingMode.ANSIX923, true);
|
|
WriteByte (PaddingMode.ISO10126, true);
|
|
}
|
|
|
|
[Test]
|
|
public void ReadModeDispose_FinalBlock ()
|
|
{
|
|
using (SHA1 sha1 = SHA1.Create()) {
|
|
using (MemoryStream mem = new MemoryStream(new byte[] { 1, 2, 3 }, false))
|
|
using (CryptoStream cs = new CryptoStream(mem, sha1, CryptoStreamMode.Read))
|
|
{
|
|
}
|
|
byte b = sha1.Hash [0]; // This will throw if TransformFinalBlock not called in sha1
|
|
GC.KeepAlive (b); // just the warning...
|
|
}
|
|
}
|
|
|
|
[Test]
|
|
public void CustomDisposeCalled ()
|
|
{
|
|
using (MemoryStream mem = new MemoryStream(new byte[] { 1, 2, 3 }, false)) {
|
|
MyCryptoStream cs;
|
|
using (cs = new MyCryptoStream (mem, SHA1.Create()))
|
|
{
|
|
}
|
|
Assert.IsTrue (cs.DisposeCalled, "#1");
|
|
}
|
|
}
|
|
|
|
[Test]
|
|
public void ExplicitFlush ()
|
|
{
|
|
// Tests that explicitly calling Flush does not call Flush in the underlying stream
|
|
MyStream ms = new MyStream ();
|
|
using (CryptoStream cs = new CryptoStream (ms, SHA1.Create (), CryptoStreamMode.Read)) {
|
|
ms.FlushCounterEnabled = true;
|
|
cs.Flush ();
|
|
ms.FlushCounterEnabled = false;
|
|
}
|
|
Assert.IsTrue (ms.FlushCounter == 0);
|
|
}
|
|
|
|
[Test]
|
|
public void ImplicitFlush ()
|
|
{
|
|
// Tests that Dispose() calls Flush on the underlying stream
|
|
MyStream ms = new MyStream ();
|
|
ms.FlushCounterEnabled = true;
|
|
using (CryptoStream cs = new CryptoStream (ms, SHA1.Create (), CryptoStreamMode.Read)) {
|
|
}
|
|
Assert.IsTrue (ms.FlushCounter == 1);
|
|
}
|
|
|
|
[Test]
|
|
public void ImplicitFlushCascade ()
|
|
{
|
|
// Tests that Dispose() calls FlushFinalBlock() on the underlying stream
|
|
MyStream ms = new MyStream ();
|
|
ms.FlushCounterEnabled = true;
|
|
CryptoStream cs1 = new CryptoStream (ms, SHA1.Create (), CryptoStreamMode.Read);
|
|
using (CryptoStream cs = new CryptoStream (cs1, SHA1.Create (), CryptoStreamMode.Read)) {
|
|
}
|
|
Assert.IsTrue (ms.FlushCounter == 1);
|
|
}
|
|
|
|
[Test]
|
|
[ExpectedException (typeof (ArgumentException))]
|
|
public void Ctor_InvalidEnumValue ()
|
|
{
|
|
CryptoStream cs = new CryptoStream (Stream.Null, SHA1.Create (), (CryptoStreamMode) 0xff);
|
|
}
|
|
|
|
[Test]
|
|
public void OutputBlock_Smaller ()
|
|
{
|
|
// The OutputBlockSize is smaller than the InputBlockSize
|
|
using (CryptoStream cs = new CryptoStream(Stream.Null, new MyCryptAlgorithm(), CryptoStreamMode.Write)) {
|
|
byte[] buffer = new byte[512 * 1024];
|
|
cs.Write(buffer, 0, buffer.Length);
|
|
}
|
|
}
|
|
|
|
class MyCryptoStream : CryptoStream {
|
|
public bool DisposeCalled { get; private set;}
|
|
|
|
public MyCryptoStream(Stream stream, ICryptoTransform transform)
|
|
: base(stream, transform, CryptoStreamMode.Read)
|
|
{
|
|
}
|
|
|
|
protected override void Dispose(bool disposing)
|
|
{
|
|
base.Dispose(disposing);
|
|
DisposeCalled = true;
|
|
}
|
|
}
|
|
|
|
class ExpandTransform : ICryptoTransform {
|
|
|
|
public bool CanReuseTransform {
|
|
get { return true; }
|
|
}
|
|
|
|
public bool CanTransformMultipleBlocks {
|
|
get; private set;
|
|
}
|
|
|
|
public int InputBlockSize {
|
|
get { return 1; }
|
|
}
|
|
|
|
public int OutputBlockSize {
|
|
get; private set;
|
|
}
|
|
|
|
public ExpandTransform (bool canTranformMultipleBlocks, int outputBlockSize)
|
|
{
|
|
this.CanTransformMultipleBlocks = canTranformMultipleBlocks;
|
|
this.OutputBlockSize = outputBlockSize;
|
|
}
|
|
|
|
public void Dispose ()
|
|
{
|
|
}
|
|
|
|
public int TransformBlock (byte [] inputBuffer, int inputOffset, int inputCount, byte [] outputBuffer, int outputOffset)
|
|
{
|
|
var ret = 0;
|
|
for (var i = 0; i < inputCount; i++, inputOffset++) {
|
|
for (var j = 0; j < OutputBlockSize; j++, outputOffset++, ret++) {
|
|
outputBuffer [outputOffset] = inputBuffer [inputOffset];
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
public byte [] TransformFinalBlock (byte [] inputBuffer, int inputOffset, int inputCount)
|
|
{
|
|
var outputBuffer = new byte [inputCount * OutputBlockSize];
|
|
TransformBlock (inputBuffer, inputOffset, inputCount, outputBuffer, 0);
|
|
return outputBuffer;
|
|
}
|
|
}
|
|
|
|
static string[] expand_values = {
|
|
"00-01-02-03-04-05-06-07",
|
|
"00-00-01-01-02-02-03-03-04-04-05-05-06-06-07-07",
|
|
"00-00-00-01-01-01-02-02-02-03-03-03-04-04-04-05-05-05-06-06-06-07-07-07",
|
|
"00-00-00-00-01-01-01-01-02-02-02-02-03-03-03-03-04-04-04-04-05-05-05-05-06-06-06-06-07-07-07-07",
|
|
"00-01-02-03-04-05-06-07",
|
|
"00-00-01-01-02-02-03-03-04-04-05-05-06-06-07-07",
|
|
"00-00-00-01-01-01-02-02-02-03-03-03-04-04-04-05-05-05-06-06-06-07-07-07",
|
|
"00-00-00-00-01-01-01-01-02-02-02-02-03-03-03-03-04-04-04-04-05-05-05-05-06-06-06-06-07-07-07-07"
|
|
};
|
|
|
|
[Test]
|
|
public void Expand ()
|
|
{
|
|
int n = 0;
|
|
foreach (var transformMultiple in new [] { false, true }) {
|
|
foreach (var outputBlockSize in new [] { 1, 2, 3, 4 }) {
|
|
var expantedStream = new MemoryStream ();
|
|
var inputData = new byte [] { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07 };
|
|
|
|
using (var stream = new CryptoStream (expantedStream, new ExpandTransform (transformMultiple, outputBlockSize), CryptoStreamMode.Write)) {
|
|
stream.Write (inputData, 0, inputData.Length);
|
|
}
|
|
expantedStream.Close ();
|
|
|
|
string value = BitConverter.ToString (expantedStream.ToArray ());
|
|
Assert.AreEqual (expand_values [n++], value);
|
|
}
|
|
}
|
|
}
|
|
|
|
class CompressTransform : ICryptoTransform {
|
|
public bool CanReuseTransform {
|
|
get { return true; }
|
|
}
|
|
|
|
public bool CanTransformMultipleBlocks {
|
|
get { return true; }
|
|
}
|
|
|
|
public int InputBlockSize {
|
|
get; private set;
|
|
}
|
|
|
|
public int OutputBlockSize {
|
|
get { return 1; }
|
|
}
|
|
|
|
public CompressTransform (int inputBlockSize)
|
|
{
|
|
this.InputBlockSize = inputBlockSize;
|
|
}
|
|
|
|
public void Dispose ()
|
|
{
|
|
}
|
|
|
|
private int bufferedCount = 0;
|
|
|
|
public int TransformBlock (byte [] inputBuffer, int inputOffset, int inputCount, byte [] outputBuffer, int outputOffset)
|
|
{
|
|
var ret = 0;
|
|
for (var i = 0; i < inputCount; i++, inputOffset++) {
|
|
if (++bufferedCount == InputBlockSize) {
|
|
outputBuffer [outputOffset++] = inputBuffer [inputOffset];
|
|
ret++;
|
|
bufferedCount = 0;
|
|
}
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
public byte [] TransformFinalBlock (byte [] inputBuffer, int inputOffset, int inputCount)
|
|
{
|
|
var outputBuffer = new byte [inputCount * OutputBlockSize];
|
|
var ret = TransformBlock (inputBuffer, inputOffset, inputCount, outputBuffer, 0);
|
|
byte[] result = new byte [ret];
|
|
Array.Copy (outputBuffer, result, ret);
|
|
return result;
|
|
}
|
|
}
|
|
|
|
static string[] compress_values = {
|
|
"00-01-02-03-04-05-06-07-08-09-0A-0B-0C-0D-0E-0F-10-11-12-13-14-15-16-17-18-19-1A-1B-1C-1D-1E-1F",
|
|
"01-03-05-07-09-0B-0D-0F-11-13-15-17-19-1B-1D-1F",
|
|
"02-05-08-0B-0E-11-14-17-1A-1D",
|
|
"03-07-0B-0F-13-17-1B-1F",
|
|
};
|
|
|
|
[Test]
|
|
public void Compress ()
|
|
{
|
|
int n = 0;
|
|
foreach (var inputBlockSize in new [] { 1, 2, 3, 4 }) {
|
|
var inputData = new byte [] {
|
|
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
|
|
0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
|
|
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
|
|
0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
|
|
};
|
|
|
|
using (var stream = new CryptoStream (new MemoryStream (inputData), new CompressTransform (inputBlockSize), CryptoStreamMode.Read)) {
|
|
var buffer = new byte [inputData.Length];
|
|
var ret = stream.Read (buffer, 0, buffer.Length);
|
|
string value = BitConverter.ToString (buffer, 0, ret);
|
|
Assert.AreEqual (compress_values [n++], value);
|
|
}
|
|
}
|
|
}
|
|
|
|
class MyCryptAlgorithm : ICryptoTransform {
|
|
public bool CanReuseTransform { get { return true; } }
|
|
public bool CanTransformMultipleBlocks { get { return false; } }
|
|
public int InputBlockSize { get { return 128 * 1024; } }
|
|
public int OutputBlockSize { get { return 64 * 1024; } }
|
|
|
|
public int TransformBlock(byte[] inputBuffer, int inputOffset, int inputCount, byte[] outputBuffer, int outputOffset)
|
|
{
|
|
return this.OutputBlockSize;
|
|
}
|
|
|
|
public byte[] TransformFinalBlock(byte[] inputBuffer, int inputOffset, int inputCount)
|
|
{
|
|
return new byte[this.OutputBlockSize];
|
|
}
|
|
|
|
public void Dispose() {}
|
|
}
|
|
|
|
class MyStream : Stream {
|
|
public bool FlushCounterEnabled;
|
|
public int FlushCounter;
|
|
|
|
public override bool CanRead
|
|
{
|
|
get {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
public override bool CanSeek
|
|
{
|
|
get {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
public override bool CanWrite
|
|
{
|
|
get {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
public override long Length
|
|
{
|
|
get {
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
public override long Position
|
|
{
|
|
get {
|
|
return 0;
|
|
}
|
|
set {
|
|
}
|
|
}
|
|
|
|
public override void Flush ()
|
|
{
|
|
if (FlushCounterEnabled)
|
|
FlushCounter++;
|
|
}
|
|
|
|
public override int Read (byte[] buffer, int offset, int count)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
public override int ReadByte ()
|
|
{
|
|
return -1;
|
|
}
|
|
|
|
public override long Seek (long offset, SeekOrigin origin)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
public override void SetLength (long value)
|
|
{
|
|
}
|
|
|
|
public override void Write (byte[] buffer, int offset, int count)
|
|
{
|
|
}
|
|
|
|
public override void WriteByte (byte value)
|
|
{
|
|
}
|
|
}
|
|
}
|
|
}
|