root / trunk / web / dojo / dojox / encoding / digests / SHA1.js
History | View | Annotate | Download (2.91 KB)
1 |
/*
|
---|---|
2 |
Copyright (c) 2004-2010, The Dojo Foundation All Rights Reserved.
|
3 |
Available via Academic Free License >= 2.1 OR the modified BSD license.
|
4 |
see: http://dojotoolkit.org/license for details
|
5 |
*/
|
6 |
|
7 |
|
8 |
if(!dojo._hasResource["dojox.encoding.digests.SHA1"]){ |
9 |
dojo._hasResource["dojox.encoding.digests.SHA1"]=true; |
10 |
dojo.provide("dojox.encoding.digests.SHA1");
|
11 |
dojo.require("dojox.encoding.digests._base");
|
12 |
(function(){
|
13 |
var _1=dojox.encoding.digests;
|
14 |
var _2=8,_3=(1<<_2)-1; |
15 |
function R(n,c){ |
16 |
return (n<<c)|(n>>>(32-c)); |
17 |
}; |
18 |
function FT(t,b,c,d){ |
19 |
if(t<20){ |
20 |
return (b&c)|((~b)&d);
|
21 |
} |
22 |
if(t<40){ |
23 |
return b^c^d;
|
24 |
} |
25 |
if(t<60){ |
26 |
return (b&c)|(b&d)|(c&d);
|
27 |
} |
28 |
return b^c^d;
|
29 |
}; |
30 |
function KT(t){ |
31 |
return (t<20)?1518500249:(t<40)?1859775393:(t<60)?-1894007588:-899497514; |
32 |
}; |
33 |
function _4(x,_5){ |
34 |
x[_5>>5]|=128<<(24-_5%32); |
35 |
x[((_5+64>>9)<<4)+15]=_5; |
36 |
var w=new Array(80),a=1732584193,b=-271733879,c=-1732584194,d=271733878,e=-1009589776; |
37 |
for(var i=0;i<x.length;i+=16){ |
38 |
var _6=a,_7=b,_8=c,_9=d,_a=e;
|
39 |
for(var j=0;j<80;j++){ |
40 |
if(j<16){ |
41 |
w[j]=x[i+j]; |
42 |
}else{
|
43 |
w[j]=R(w[j-3]^w[j-8]^w[j-14]^w[j-16],1); |
44 |
} |
45 |
var t=_1.addWords(_1.addWords(R(a,5),FT(j,b,c,d)),_1.addWords(_1.addWords(e,w[j]),KT(j))); |
46 |
e=d; |
47 |
d=c; |
48 |
c=R(b,30);
|
49 |
b=a; |
50 |
a=t; |
51 |
} |
52 |
a=_1.addWords(a,_6); |
53 |
b=_1.addWords(b,_7); |
54 |
c=_1.addWords(c,_8); |
55 |
d=_1.addWords(d,_9); |
56 |
e=_1.addWords(e,_a); |
57 |
} |
58 |
return [a,b,c,d,e];
|
59 |
}; |
60 |
function _b(_c,_d){ |
61 |
var wa=_e(_d);
|
62 |
if(wa.length>16){ |
63 |
wa=_4(wa,_d.length*_2); |
64 |
} |
65 |
var _f=new Array(16),_10=new Array(16); |
66 |
for(var i=0;i<16;i++){ |
67 |
_f[i]=wa[i]^909522486;
|
68 |
_10[i]=wa[i]^1549556828;
|
69 |
} |
70 |
var _11=_4(_f.concat(_e(_c)),512+_c.length*_2); |
71 |
return _4(_10.concat(_11),512+160); |
72 |
}; |
73 |
function _e(s){ |
74 |
var wa=[];
|
75 |
for(var i=0,l=s.length*_2;i<l;i+=_2){ |
76 |
wa[i>>5]|=(s.charCodeAt(i/_2)&_3)<<(32-_2-i%32); |
77 |
} |
78 |
return wa;
|
79 |
}; |
80 |
function _12(wa){ |
81 |
var h="0123456789abcdef",s=[]; |
82 |
for(var i=0,l=wa.length*4;i<l;i++){ |
83 |
s.push(h.charAt((wa[i>>2]>>((3-i%4)*8+4))&15),h.charAt((wa[i>>2]>>((3-i%4)*8))&15)); |
84 |
} |
85 |
return s.join(""); |
86 |
}; |
87 |
function _13(wa){ |
88 |
var s=[];
|
89 |
for(var i=0,l=wa.length*32;i<l;i+=_2){ |
90 |
s.push(String.fromCharCode((wa[i>>5]>>>(32-_2-i%32))&_3)); |
91 |
} |
92 |
return s.join(""); |
93 |
}; |
94 |
function _14(wa){ |
95 |
var p="=",tab="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/",s=[]; |
96 |
for(var i=0,l=wa.length*4;i<l;i+=3){ |
97 |
var t=(((wa[i>>2]>>8*(3-i%4))&255)<<16)|(((wa[i+1>>2]>>8*(3-(i+1)%4))&255)<<8)|((wa[i+2>>2]>>8*(3-(i+2)%4))&255); |
98 |
for(var j=0;j<4;j++){ |
99 |
if(i*8+j*6>wa.length*32){ |
100 |
s.push(p); |
101 |
}else{
|
102 |
s.push(tab.charAt((t>>6*(3-j))&63)); |
103 |
} |
104 |
} |
105 |
} |
106 |
return s.join(""); |
107 |
}; |
108 |
_1.SHA1=function(_15,_16){ |
109 |
var out=_16||_1.outputTypes.Base64;
|
110 |
var wa=_4(_e(_15),_15.length*_2);
|
111 |
switch(out){
|
112 |
case _1.outputTypes.Raw:
|
113 |
return wa;
|
114 |
case _1.outputTypes.Hex:
|
115 |
return _12(wa);
|
116 |
case _1.outputTypes.String:
|
117 |
return _13(wa);
|
118 |
default:
|
119 |
return _14(wa);
|
120 |
} |
121 |
}; |
122 |
_1.SHA1._hmac=function(_17,key,_18){ |
123 |
var out=_18||_1.outputTypes.Base64;
|
124 |
var wa=_b(_17,key);
|
125 |
switch(out){
|
126 |
case _1.outputTypes.Raw:
|
127 |
return wa;
|
128 |
case _1.outputTypes.Hex:
|
129 |
return _12(wa);
|
130 |
case _1.outputTypes.String:
|
131 |
return _13(wa);
|
132 |
default:
|
133 |
return _14(wa);
|
134 |
} |
135 |
}; |
136 |
})(); |
137 |
} |