Merge pull request #2127 from joelmartinez/mdoc-multiassembly-squashed
[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 // Copyright (C) 2004-2005 Novell, Inc (http://www.novell.com)
9 //
10 // Permission is hereby granted, free of charge, to any person obtaining
11 // a copy of this software and associated documentation files (the
12 // "Software"), to deal in the Software without restriction, including
13 // without limitation the rights to use, copy, modify, merge, publish,
14 // distribute, sublicense, and/or sell copies of the Software, and to
15 // permit persons to whom the Software is furnished to do so, subject to
16 // the following conditions:
17 // 
18 // The above copyright notice and this permission notice shall be
19 // included in all copies or substantial portions of the Software.
20 // 
21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
22 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
23 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
24 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
25 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
26 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
27 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
28 //
29
30 using System.Runtime.InteropServices;
31 using System.Security.Permissions;
32
33 namespace System.Security.Cryptography {
34
35         // Note: This class isn't used by Mono as all algorithms are provided with
36         // 100% managed implementations.
37
38         [ComVisible (true)]
39         public sealed class CryptoAPITransform : ICryptoTransform {
40
41                 private bool m_disposed;
42
43                 internal CryptoAPITransform () 
44                 {
45                         m_disposed = false;
46                 }
47
48
49                 public bool CanReuseTransform {
50                         get { return true; }
51                 }
52
53                 public bool CanTransformMultipleBlocks {
54                         get { return true; }
55                 }
56
57                 public int InputBlockSize {
58                         get { return 0; }
59                 }
60
61                 public IntPtr KeyHandle {
62                         [SecurityPermission (SecurityAction.Demand, UnmanagedCode = true)]
63                         get { return IntPtr.Zero; }
64                 }
65
66                 public int OutputBlockSize {
67                         get { return 0; }
68                 }
69
70                 public void Dispose ()
71                 {
72                         Dispose (true);
73                         GC.SuppressFinalize (this);  // Finalization is now unnecessary
74                 }
75
76                 public void Clear () 
77                 {
78                         Dispose (false);
79                 }
80
81                 private void Dispose (bool disposing) 
82                 {
83                         if (!m_disposed) {
84                                 // dispose unmanaged objects
85                                 if (disposing) {
86                                         // dispose managed objects
87                                 }
88                                 m_disposed = true;
89                         }
90                 }
91
92                 public int TransformBlock (byte[] inputBuffer, int inputOffset, int inputCount, byte[] outputBuffer, int outputOffset)
93                 {
94                         return 0;
95                 }
96
97                 public byte[] TransformFinalBlock (byte[] inputBuffer, int inputOffset, int inputCount)
98                 {
99                         // Reset (); should be called here before returning final data
100                         return null;
101                 }
102
103                 [ComVisible (false)]
104                 public void Reset ()
105                 {
106                 }
107         }
108 }