blob: dc9bafea3ab228c1ffabd0ebb53a99e5d08affce (
plain)
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
71
|
/**
* SHABase
*
* An ActionScript 3 abstract class for the SHA family of hash functions
* Copyright (c) 2007 Henri Torgemane
*
* See LICENSE.txt for full license information.
*/
package com.hurlant.crypto.hash
{
import flash.utils.ByteArray;
import flash.utils.Endian;
public class SHABase implements IHash
{
public function SHABase() { }
public var pad_size:int = 40;
public function getInputSize():uint
{
return 64;
}
public function getHashSize():uint
{
return 0;
}
public function getPadSize():int
{
return pad_size;
}
public function hash(src:ByteArray):ByteArray
{
var savedLength:uint = src.length;
var savedEndian:String = src.endian;
src.endian = Endian.BIG_ENDIAN;
var len:uint = savedLength *8;
// pad to nearest int.
while (src.length%4!=0) {
src[src.length]=0;
}
// convert ByteArray to an array of uint
src.position=0;
var a:Array = [];
for (var i:uint=0;i<src.length;i+=4) {
a.push(src.readUnsignedInt());
}
var h:Array = core(a, len);
var out:ByteArray = new ByteArray;
var words:uint = getHashSize()/4;
for (i=0;i<words;i++) {
out.writeUnsignedInt(h[i]);
}
// unpad, to leave the source untouched.
src.length = savedLength;
src.endian = savedEndian;
return out;
}
protected function core(x:Array, len:uint):Array {
return null;
}
public function toString():String {
return "sha";
}
}
}
|
