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//
// System.Security.Cryptography CryptoStream.cs
//
// Author:
// Thomas Neidhart (tome@sbox.tugraz.at)
//
using System;
using System.IO;
namespace System.Security.Cryptography
{
public class CryptoStream : Stream
{
private CryptoStreamMode _mode;
public CryptoStream(Stream stream, ICryptoTransform transform, CryptoStreamMode mode)
{
_mode = mode;
}
public override bool CanRead
{
get {
switch (_mode) {
case CryptoStreamMode.Read:
return true;
case CryptoStreamMode.Write:
return false;
default:
return false;
}
}
}
public override bool CanSeek
{
get {
return false;
}
}
public override bool CanWrite
{
get {
switch (_mode) {
case CryptoStreamMode.Read:
return false;
case CryptoStreamMode.Write:
return true;
default:
return false;
}
}
}
public override long Length
{
get {
throw new NotSupportedException("Length property not supported by CryptoStream");
}
}
public override long Position
{
get {
throw new NotSupportedException("Position property not supported by CryptoStream");
}
set {
throw new NotSupportedException("Position property not supported by CryptoStream");
}
}
[MonoTODO]
public override int Read(byte[] buffer, int offset, int count)
{
// TODO: implement
return 0;
}
[MonoTODO]
public override void Write(byte[] buffer, int offset, int count)
{
// TODO: implement
}
[MonoTODO]
public override void Flush()
{
// TODO: implement
}
[MonoTODO]
public void FlushFinalBlock()
{
if (_mode != CryptoStreamMode.Write)
throw new NotSupportedException("cannot flush a non-writeable CryptoStream");
// TODO: implement
}
public override long Seek(long offset, SeekOrigin origin)
{
throw new NotSupportedException("cannot seek a CryptoStream");
}
public override void SetLength(long value)
{
// LAMESPEC: should throw NotSupportedException like Seek??
return;
}
} // CryptoStream
} // System.Security.Cryptography
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