This commit was manufactured by cvs2svn to create branch 'mono-1-0'.
[mono.git] / mcs / class / corlib / System.Security.Cryptography / CryptoAPITransform.cs
1 //
2 // System.Security.Cryptography CryptoAPITransform.cs
3 //
4 // Authors:
5 //      Thomas Neidhart (tome@sbox.tugraz.at)
6 //      Sebastien Pouliot (sebastien@ximian.com)
7 //
8 // (C) 2004 Novell (http://www.novell.com)
9 //\r
10
11 //
12 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
13 //
14 // Permission is hereby granted, free of charge, to any person obtaining
15 // a copy of this software and associated documentation files (the
16 // "Software"), to deal in the Software without restriction, including
17 // without limitation the rights to use, copy, modify, merge, publish,
18 // distribute, sublicense, and/or sell copies of the Software, and to
19 // permit persons to whom the Software is furnished to do so, subject to
20 // the following conditions:
21 // 
22 // The above copyright notice and this permission notice shall be
23 // included in all copies or substantial portions of the Software.
24 // 
25 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
29 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
30 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
31 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
32 //
33
34 using System;
35
36 namespace System.Security.Cryptography {
37
38         // Note: This class isn't used by Mono as all algorithms are provided with
39         // 100% managed implementations.
40
41         public sealed class CryptoAPITransform : ICryptoTransform {
42
43                 private bool m_disposed;
44
45                 internal CryptoAPITransform () 
46                 {
47                         m_disposed = false;
48                 }
49
50                 ~CryptoAPITransform () 
51                 {
52                         Dispose (false);
53                 }
54
55                 public bool CanReuseTransform {
56                         get { return true; }
57                 }
58
59                 public bool CanTransformMultipleBlocks {
60                         get { return true; }
61                 }
62
63                 public int InputBlockSize {
64                         get { return 0; }
65                 }
66
67                 public IntPtr KeyHandle {
68                         get { return IntPtr.Zero; }
69                 }
70
71                 public int OutputBlockSize {
72                         get { return 0; }
73                 }
74
75                 void IDisposable.Dispose () 
76                 {
77                         Dispose (true);
78                         GC.SuppressFinalize (this);  // Finalization is now unnecessary
79                 }
80
81                 public void Clear() 
82                 {
83                         Dispose (false);
84                 }
85
86                 private void Dispose (bool disposing) 
87                 {
88                         if (!m_disposed) {
89                                 // dispose unmanaged objects
90                                 if (disposing) {
91                                         // dispose managed objects
92                                 }
93                                 m_disposed = true;
94                         }
95                 }
96
97                 public int TransformBlock (byte[] inputBuffer, int inputOffset, int inputCount, byte[] outputBuffer, int outputOffset)
98                 {
99                         return 0;
100                 }
101
102                 public byte[] TransformFinalBlock (byte[] inputBuffer, int inputOffset, int inputCount)
103                 {
104                         return null;
105                 }
106         }
107 }