1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
|
//
// Mono.Security.Cryptography.MD2CryptoServiceProvider
//
// Authors:
// Sebastien Pouliot (spouliot@motus.com)
//
// Copyright (C) 2003 Motus Technologies Inc. (http://www.motus.com)
//
using System;
using System.Security.Cryptography;
namespace Mono.Security.Cryptography {
public class MD2CryptoServiceProvider : MD2 {
private CapiHash hash;
public MD2CryptoServiceProvider ()
{
hash = null;
}
~MD2CryptoServiceProvider ()
{
Dispose (true);
}
// 2 cases:
// a. we were calculing a hash and want to abort
// b. we haven't started yet
public override void Initialize ()
{
State = 0;
if (hash == null) {
hash = new CapiHash (CryptoAPI.CALG_MD2);
}
}
protected override void Dispose (bool disposing)
{
if (hash != null) {
hash.Dispose ();
hash = null;
// there's no unmanaged resources (so disposing isn't used)
}
}
protected override void HashCore (byte[] rgb, int ibStart, int cbSize)
{
if (State == 0)
Initialize ();
if (hash == null)
throw new ObjectDisposedException ("MD2CryptoServiceProvider");
State = 1;
hash.HashCore (rgb, ibStart, cbSize);
}
protected override byte[] HashFinal ()
{
if (hash == null)
throw new ObjectDisposedException ("MD2CryptoServiceProvider");
State = 0;
byte[] result = hash.HashFinal ();
Dispose (false);
return result;
}
}
}
|
