113 lines
7.9 KiB
JavaScript
113 lines
7.9 KiB
JavaScript
/* A JavaScript implementation of the SHA family of hashes, as defined in FIPS
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* PUB 180-2 as well as the corresponding HMAC implementation as defined in
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* FIPS PUB 198a
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*
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* Version 1.3 Copyright Brian Turek 2008-2010
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* Distributed under the BSD License
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* See http://jssha.sourceforge.net/ for more information
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*
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* Several functions taken from Paul Johnson
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*/
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(function(){var charSize=8,b64pad="",hexCase=0,str2binb=function(a){var b=[],mask=(1<<charSize)-1,length=a.length*charSize,i;for(i=0;i<length;i+=charSize){b[i>>5]|=(a.charCodeAt(i/charSize)&mask)<<(32-charSize-(i%32))}return b},hex2binb=function(a){var b=[],length=a.length,i,num;for(i=0;i<length;i+=2){num=parseInt(a.substr(i,2),16);if(!isNaN(num)){b[i>>3]|=num<<(24-(4*(i%8)))}else{return"INVALID HEX STRING"}}return b},binb2hex=function(a){var b=(hexCase)?"0123456789ABCDEF":"0123456789abcdef",str="",length=a.length*4,i,srcByte;for(i=0;i<length;i+=1){srcByte=a[i>>2]>>((3-(i%4))*8);str+=b.charAt((srcByte>>4)&0xF)+b.charAt(srcByte&0xF)}return str},binb2b64=function(a){var b="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"+"0123456789+/",str="",length=a.length*4,i,j,triplet;for(i=0;i<length;i+=3){triplet=(((a[i>>2]>>8*(3-i%4))&0xFF)<<16)|(((a[i+1>>2]>>8*(3-(i+1)%4))&0xFF)<<8)|((a[i+2>>2]>>8*(3-(i+2)%4))&0xFF);for(j=0;j<4;j+=1){if(i*8+j*6<=a.length*32){str+=b.charAt((triplet>>6*(3-j))&0x3F)}else{str+=b64pad}}}return str},rotl=function(x,n){return(x<<n)|(x>>>(32-n))},parity=function(x,y,z){return x^y^z},ch=function(x,y,z){return(x&y)^(~x&z)},maj=function(x,y,z){return(x&y)^(x&z)^(y&z)},safeAdd_2=function(x,y){var a=(x&0xFFFF)+(y&0xFFFF),msw=(x>>>16)+(y>>>16)+(a>>>16);return((msw&0xFFFF)<<16)|(a&0xFFFF)},safeAdd_5=function(a,b,c,d,e){var f=(a&0xFFFF)+(b&0xFFFF)+(c&0xFFFF)+(d&0xFFFF)+(e&0xFFFF),msw=(a>>>16)+(b>>>16)+(c>>>16)+(d>>>16)+(e>>>16)+(f>>>16);return((msw&0xFFFF)<<16)|(f&0xFFFF)},coreSHA1=function(f,g){var W=[],a,b,c,d,e,T,i,t,appendedMessageLength,H=[0x67452301,0xefcdab89,0x98badcfe,0x10325476,0xc3d2e1f0],K=[0x5a827999,0x5a827999,0x5a827999,0x5a827999,0x5a827999,0x5a827999,0x5a827999,0x5a827999,0x5a827999,0x5a827999,0x5a827999,0x5a827999,0x5a827999,0x5a827999,0x5a827999,0x5a827999,0x5a827999,0x5a827999,0x5a827999,0x5a827999,0x6ed9eba1,0x6ed9eba1,0x6ed9eba1,0x6ed9eba1,0x6ed9eba1,0x6ed9eba1,0x6ed9eba1,0x6ed9eba1,0x6ed9eba1,0x6ed9eba1,0x6ed9eba1,0x6ed9eba1,0x6ed9eba1,0x6ed9eba1,0x6ed9eba1,0x6ed9eba1,0x6ed9eba1,0x6ed9eba1,0x6ed9eba1,0x6ed9eba1,0x8f1bbcdc,0x8f1bbcdc,0x8f1bbcdc,0x8f1bbcdc,0x8f1bbcdc,0x8f1bbcdc,0x8f1bbcdc,0x8f1bbcdc,0x8f1bbcdc,0x8f1bbcdc,0x8f1bbcdc,0x8f1bbcdc,0x8f1bbcdc,0x8f1bbcdc,0x8f1bbcdc,0x8f1bbcdc,0x8f1bbcdc,0x8f1bbcdc,0x8f1bbcdc,0x8f1bbcdc,0xca62c1d6,0xca62c1d6,0xca62c1d6,0xca62c1d6,0xca62c1d6,0xca62c1d6,0xca62c1d6,0xca62c1d6,0xca62c1d6,0xca62c1d6,0xca62c1d6,0xca62c1d6,0xca62c1d6,0xca62c1d6,0xca62c1d6,0xca62c1d6,0xca62c1d6,0xca62c1d6,0xca62c1d6,0xca62c1d6];f[g>>5]|=0x80<<(24-(g%32));f[(((g+65)>>9)<<4)+15]=g;appendedMessageLength=f.length;for(i=0;i<appendedMessageLength;i+=16){a=H[0];b=H[1];c=H[2];d=H[3];e=H[4];for(t=0;t<80;t+=1){if(t<16){W[t]=f[t+i]}else{W[t]=rotl(W[t-3]^W[t-8]^W[t-14]^W[t-16],1)}if(t<20){T=safeAdd_5(rotl(a,5),ch(b,c,d),e,K[t],W[t])}else if(t<40){T=safeAdd_5(rotl(a,5),parity(b,c,d),e,K[t],W[t])}else if(t<60){T=safeAdd_5(rotl(a,5),maj(b,c,d),e,K[t],W[t])}else{T=safeAdd_5(rotl(a,5),parity(b,c,d),e,K[t],W[t])}e=d;d=c;c=rotl(b,30);b=a;a=T}H[0]=safeAdd_2(a,H[0]);H[1]=safeAdd_2(b,H[1]);H[2]=safeAdd_2(c,H[2]);H[3]=safeAdd_2(d,H[3]);H[4]=safeAdd_2(e,H[4])}return H},jsSHA=function(a,b){this.sha1=null;this.strBinLen=null;this.strToHash=null;if("HEX"===b){if(0!==(a.length%2)){return"TEXT MUST BE IN BYTE INCREMENTS"}this.strBinLen=a.length*4;this.strToHash=hex2binb(a)}else if(("ASCII"===b)||('undefined'===typeof(b))){this.strBinLen=a.length*charSize;this.strToHash=str2binb(a)}else{return"UNKNOWN TEXT INPUT TYPE"}};jsSHA.prototype={getHash:function(a){var b=null,message=this.strToHash.slice();switch(a){case"HEX":b=binb2hex;break;case"B64":b=binb2b64;break;default:return"FORMAT NOT RECOGNIZED"}if(null===this.sha1){this.sha1=coreSHA1(message,this.strBinLen)}return b(this.sha1)},getHMAC:function(a,b,c){var d,keyToUse,i,retVal,keyBinLen,keyWithIPad=[],keyWithOPad=[];switch(c){case"HEX":d=binb2hex;break;case"B64":d=binb2b64;break;default:return"FORMAT NOT RECOGNIZED"}if("HEX"===b){if(0!==(a.length%2)){return"KEY MUST BE IN BYTE INCREMENTS"}keyToUse=hex2binb(a);keyBinLen=a.length*4}else if("ASCII"===b){keyToUse=str2binb(a);keyBinLen=a.length*charSize}else{return"UNKNOWN KEY INPUT TYPE"}if(64<(keyBinLen/8)){keyToUse=coreSHA1(keyToUse,keyBinLen);keyToUse[15]&=0xFFFFFF00}else if(64>(keyBinLen/8)){keyToUse[15]&=0xFFFFFF00}for(i=0;i<=15;i+=1){keyWithIPad[i]=keyToUse[i]^0x36363636;keyWithOPad[i]=keyToUse[i]^0x5C5C5C5C}retVal=coreSHA1(keyWithIPad.concat(this.strToHash),512+this.strBinLen);retVal=coreSHA1(keyWithOPad.concat(retVal),672);return(d(retVal))}};window.jsSHA=jsSHA}());
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/*
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* passy.js - implementation of passy algorithm javascript, by Stephen Waits
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*
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* The MIT License
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*
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* Copyright (c) 2010 Stephen Waits <steve@waits.net>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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/*
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* Given a "text" (i.e. "amazon.com") and a "secret" (i.e. "mypassword") return an
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* array of four Passy'fied passwords.
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*/
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var passy = function(text,secret)
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{
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/*
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* function to make a password out of a hexadecimal string "0123456789abcdef".
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*
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* + substitutes symbols for every other digit [0-9]
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* + capitalize every other alpha [a-f]
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*
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*/
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var passify = function(hexstr)
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{
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// lookup table to convert a single character to a symbol
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var symtab = { "1":"!", "2":"@", "3":"#", "4":"$", "5":"%", "6":"^", "7":"&", "8":"*", "9":"(", "0":")" };
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// convert every other numerical character to a symbol
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var odd = true;
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for(i=0;i<hexstr.length;++i)
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{
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// is this a digit-character?
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if ( /[0-9]/.test(hexstr[i]) )
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{
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if ( odd )
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{
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// substitute symbol for odd digit-characters, leave even digit-characters alone!
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hexstr = hexstr.slice(0,i) + symtab[hexstr[i]] + hexstr.slice(i+1,hexstr.length);
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}
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// flip odd toggle
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odd = !odd;
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}
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}
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// alternate uppercase/lowercase for alpha characters
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odd = true;
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for(i=0;i<hexstr.length;++i)
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{
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// is this an alpha-character?
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if ( /[a-f]/i.test(hexstr[i]) )
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{
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// set odd alpha-characters to uppercase, and even alpha-characters to lowercase
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hexstr =
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hexstr.slice(0,i) +
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( odd ? hexstr[i].toUpperCase() : hexstr[i].toLowerCase()) +
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hexstr.slice(i+1,hexstr.length);
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// flip odd toggle
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odd = !odd;
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}
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}
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// finished
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return hexstr;
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}
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// get hmac
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var hmac = new jsSHA(text.toLowerCase(), "ASCII").getHMAC(secret, "ASCII", "HEX");
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// split into four 10 character strings and "passify", and return the array
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// include the unpassified versions afterward
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return [
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passify(hmac.slice( 0,10)),
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passify(hmac.slice(10,20)),
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passify(hmac.slice(20,30)),
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passify(hmac.slice(30,40)),
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hmac.slice( 0,10),
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hmac.slice(10,20),
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hmac.slice(20,30),
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hmac.slice(30,40)];
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}
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