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root / trunk / web / dojo / dojox / encoding / crypto / SimpleAES.js @ 12

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/*
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        Copyright (c) 2004-2010, The Dojo Foundation All Rights Reserved.
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        Available via Academic Free License >= 2.1 OR the modified BSD license.
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        see: http://dojotoolkit.org/license for details
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*/
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if(!dojo._hasResource["dojox.encoding.crypto.SimpleAES"]){
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dojo._hasResource["dojox.encoding.crypto.SimpleAES"]=true;
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dojo.provide("dojox.encoding.crypto.SimpleAES");
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dojo.require("dojox.encoding.base64");
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dojo.require("dojox.encoding.crypto._base");
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(function(){
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var _1=[99,124,119,123,242,107,111,197,48,1,103,43,254,215,171,118,202,130,201,125,250,89,71,240,173,212,162,175,156,164,114,192,183,253,147,38,54,63,247,204,52,165,229,241,113,216,49,21,4,199,35,195,24,150,5,154,7,18,128,226,235,39,178,117,9,131,44,26,27,110,90,160,82,59,214,179,41,227,47,132,83,209,0,237,32,252,177,91,106,203,190,57,74,76,88,207,208,239,170,251,67,77,51,133,69,249,2,127,80,60,159,168,81,163,64,143,146,157,56,245,188,182,218,33,16,255,243,210,205,12,19,236,95,151,68,23,196,167,126,61,100,93,25,115,96,129,79,220,34,42,144,136,70,238,184,20,222,94,11,219,224,50,58,10,73,6,36,92,194,211,172,98,145,149,228,121,231,200,55,109,141,213,78,169,108,86,244,234,101,122,174,8,186,120,37,46,28,166,180,198,232,221,116,31,75,189,139,138,112,62,181,102,72,3,246,14,97,53,87,185,134,193,29,158,225,248,152,17,105,217,142,148,155,30,135,233,206,85,40,223,140,161,137,13,191,230,66,104,65,153,45,15,176,84,187,22];
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var _2=[[0,0,0,0],[1,0,0,0],[2,0,0,0],[4,0,0,0],[8,0,0,0],[16,0,0,0],[32,0,0,0],[64,0,0,0],[128,0,0,0],[27,0,0,0],[54,0,0,0]];
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function _3(_4,w){
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var Nb=4;
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var Nr=w.length/Nb-1;
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var _5=[[],[],[],[]];
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for(var i=0;i<4*Nb;i++){
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_5[i%4][Math.floor(i/4)]=_4[i];
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}
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_5=_6(_5,w,0,Nb);
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for(var _7=1;_7<Nr;_7++){
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_5=_8(_5,Nb);
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_5=_9(_5,Nb);
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_5=_a(_5,Nb);
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_5=_6(_5,w,_7,Nb);
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}
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_5=_8(_5,Nb);
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_5=_9(_5,Nb);
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_5=_6(_5,w,Nr,Nb);
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var _b=new Array(4*Nb);
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for(var i=0;i<4*Nb;i++){
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_b[i]=_5[i%4][Math.floor(i/4)];
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}
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return _b;
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};
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function _8(s,Nb){
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for(var r=0;r<4;r++){
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for(var c=0;c<Nb;c++){
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s[r][c]=_1[s[r][c]];
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}
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}
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return s;
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};
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function _9(s,Nb){
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var t=new Array(4);
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for(var r=1;r<4;r++){
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for(var c=0;c<4;c++){
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t[c]=s[r][(c+r)%Nb];
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}
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for(var c=0;c<4;c++){
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s[r][c]=t[c];
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}
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}
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return s;
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};
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function _a(s,Nb){
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for(var c=0;c<4;c++){
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var a=new Array(4);
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var b=new Array(4);
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for(var i=0;i<4;i++){
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a[i]=s[i][c];
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b[i]=s[i][c]&128?s[i][c]<<1^283:s[i][c]<<1;
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}
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s[0][c]=b[0]^a[1]^b[1]^a[2]^a[3];
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s[1][c]=a[0]^b[1]^a[2]^b[2]^a[3];
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s[2][c]=a[0]^a[1]^b[2]^a[3]^b[3];
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s[3][c]=a[0]^b[0]^a[1]^a[2]^b[3];
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}
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return s;
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};
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function _6(_c,w,_d,Nb){
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for(var r=0;r<4;r++){
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for(var c=0;c<Nb;c++){
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_c[r][c]^=w[_d*4+c][r];
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}
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}
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return _c;
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};
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function _e(_f){
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var Nb=4;
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var Nk=_f.length/4;
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var Nr=Nk+6;
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var w=new Array(Nb*(Nr+1));
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var _10=new Array(4);
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for(var i=0;i<Nk;i++){
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var r=[_f[4*i],_f[4*i+1],_f[4*i+2],_f[4*i+3]];
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w[i]=r;
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}
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for(var i=Nk;i<(Nb*(Nr+1));i++){
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w[i]=new Array(4);
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for(var t=0;t<4;t++){
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_10[t]=w[i-1][t];
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}
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if(i%Nk==0){
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_10=_11(_12(_10));
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for(var t=0;t<4;t++){
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_10[t]^=_2[i/Nk][t];
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}
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}else{
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if(Nk>6&&i%Nk==4){
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_10=_11(_10);
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}
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}
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for(var t=0;t<4;t++){
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w[i][t]=w[i-Nk][t]^_10[t];
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}
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}
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return w;
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};
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function _11(w){
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for(var i=0;i<4;i++){
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w[i]=_1[w[i]];
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}
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return w;
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};
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function _12(w){
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w[4]=w[0];
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for(var i=0;i<4;i++){
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w[i]=w[i+1];
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}
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return w;
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};
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function _13(_14,_15,_16){
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if(!(_16==128||_16==192||_16==256)){
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return "";
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}
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var _17=_16/8;
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var _18=new Array(_17);
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for(var i=0;i<_17;i++){
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_18[i]=_15.charCodeAt(i)&255;
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}
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var key=_3(_18,_e(_18));
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key=key.concat(key.slice(0,_17-16));
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var _19=16;
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var _1a=new Array(_19);
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var _1b=(new Date()).getTime();
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for(var i=0;i<4;i++){
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_1a[i]=(_1b>>>i*8)&255;
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}
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for(var i=0;i<4;i++){
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_1a[i+4]=(_1b/4294967296>>>i*8)&255;
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}
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var _1c=_e(key);
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var _1d=Math.ceil(_14.length/_19);
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var _1e=new Array(_1d);
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for(var b=0;b<_1d;b++){
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for(var c=0;c<4;c++){
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_1a[15-c]=(b>>>c*8)&255;
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}
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for(var c=0;c<4;c++){
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_1a[15-c-4]=(b/4294967296>>>c*8);
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}
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var _1f=_3(_1a,_1c);
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var _20=b<_1d-1?_19:(_14.length-1)%_19+1;
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var ct="";
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for(var i=0;i<_20;i++){
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var _21=_14.charCodeAt(b*_19+i);
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var _22=_21^_1f[i];
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ct+=((_22<16)?"0":"")+_22.toString(16);
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}
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_1e[b]=ct;
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}
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var _23="";
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for(var i=0;i<8;i++){
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_23+=((_1a[i]<16)?"0":"")+_1a[i].toString(16);
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}
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return _23+" "+_1e.join(" ");
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};
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function _24(s){
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var ret=[];
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s.replace(/(..)/g,function(str){
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ret.push(parseInt(str,16));
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});
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return ret;
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};
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function _25(_26,_27,_28){
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if(!(_28==128||_28==192||_28==256)){
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return "";
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}
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var _29=_28/8;
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var _2a=new Array(_29);
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for(var i=0;i<_29;i++){
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_2a[i]=_27.charCodeAt(i)&255;
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}
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var _2b=_e(_2a);
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var key=_3(_2a,_2b);
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key=key.concat(key.slice(0,_29-16));
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var _2c=_e(key);
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_26=_26.split(" ");
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var _2d=16;
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var _2e=new Array(_2d);
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var _2f=_26[0];
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_2e=_24(_2f);
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var _30=new Array(_26.length-1);
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for(var b=1;b<_26.length;b++){
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for(var c=0;c<4;c++){
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_2e[15-c]=((b-1)>>>c*8)&255;
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}
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for(var c=0;c<4;c++){
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_2e[15-c-4]=((b/4294967296-1)>>>c*8)&255;
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}
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var _31=_3(_2e,_2c);
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var pt="";
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var tmp=_24(_26[b]);
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for(var i=0;i<tmp.length;i++){
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var _32=_26[b].charCodeAt(i);
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var _33=tmp[i]^_31[i];
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pt+=String.fromCharCode(_33);
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}
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_30[b-1]=pt;
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}
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return _30.join("");
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};
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function _34(str){
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return str.replace(/[\0\t\n\v\f\r\xa0!-]/g,function(c){
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return "!"+c.charCodeAt(0)+"!";
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});
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};
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function _35(str){
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return str.replace(/!\d\d?\d?!/g,function(c){
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return String.fromCharCode(c.slice(1,-1));
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});
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};
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dojox.encoding.crypto.SimpleAES=new (function(){
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this.encrypt=function(_36,key){
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return _13(_36,key,256);
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};
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this.decrypt=function(_37,key){
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return _25(_37,key,256);
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};
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})();
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})();
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}