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//
// System.Security.Cryptography CryptoAPITransform.cs
//
// Authors:
// Thomas Neidhart (tome@sbox.tugraz.at)
// Sebastien Pouliot (sebastien@ximian.com)
//
// Copyright (C) 2004-2005 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System.Runtime.InteropServices;
using System.Security.Permissions;
namespace System.Security.Cryptography {
// Note: This class isn't used by Mono as all algorithms are provided with
// 100% managed implementations.
#if NET_2_0
[ComVisible (true)]
#endif
public sealed class CryptoAPITransform : ICryptoTransform {
private bool m_disposed;
internal CryptoAPITransform ()
{
m_disposed = false;
}
#if ! NET_2_0
~CryptoAPITransform ()
{
Dispose (false);
}
#endif
public bool CanReuseTransform {
get { return true; }
}
public bool CanTransformMultipleBlocks {
get { return true; }
}
public int InputBlockSize {
get { return 0; }
}
public IntPtr KeyHandle {
[SecurityPermission (SecurityAction.Demand, UnmanagedCode = true)]
get { return IntPtr.Zero; }
}
public int OutputBlockSize {
get { return 0; }
}
void IDisposable.Dispose ()
{
Dispose (true);
GC.SuppressFinalize (this); // Finalization is now unnecessary
}
public void Clear ()
{
Dispose (false);
}
private void Dispose (bool disposing)
{
if (!m_disposed) {
// dispose unmanaged objects
if (disposing) {
// dispose managed objects
}
m_disposed = true;
}
}
public int TransformBlock (byte[] inputBuffer, int inputOffset, int inputCount, byte[] outputBuffer, int outputOffset)
{
return 0;
}
public byte[] TransformFinalBlock (byte[] inputBuffer, int inputOffset, int inputCount)
{
// Reset (); should be called here before returning final data
return null;
}
#if NET_2_0
[ComVisible (false)]
public void Reset ()
{
}
#endif
}
}
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