sjcl.js

"use strict";var sjcl={cipher:{},hash:{},mode:{},misc:{},codec:{},exception:{corrupt:function(a){this.toString=function(){return"CORRUPT: "+this.message};this.message=a},invalid:function(a){this.toString=function(){return"INVALID: "+this.message};this.message=a},bug:function(a){this.toString=function(){return"BUG: "+this.message};this.message=a}}};
sjcl.bitArray={bitSlice:function(a,b,c){a=sjcl.bitArray.j(a.slice(b/32),32-(b&31)).slice(1);return c===undefined?a:sjcl.bitArray.clamp(a,c-b)},concat:function(a,b){if(a.length===0||b.length===0)return a.concat(b);var c=a[a.length-1],d=sjcl.bitArray.getPartial(c);return d===32?a.concat(b):sjcl.bitArray.j(b,d,c|0,a.slice(0,a.length-1))},bitLength:function(a){var b=a.length;if(b===0)return 0;return(b-1)*32+sjcl.bitArray.getPartial(a[b-1])},clamp:function(a,b){if(a.length*32<b)return a;a=a.slice(0,Math.ceil(b/
32));var c=a.length;b&=31;if(c>0&&b)a[c-1]=sjcl.bitArray.partial(b,a[c-1]&2147483648>>b-1,1);return a},partial:function(a,b,c){if(a===32)return b;return(c?b|0:b<<32-a)+a*0x10000000000},getPartial:function(a){return Math.round(a/0x10000000000)||32},equal:function(a,b){if(sjcl.bitArray.bitLength(a)!==sjcl.bitArray.bitLength(b))return false;var c=0,d;for(d=0;d<a.length;d++)c|=a[d]^b[d];return c===0},j:function(a,b,c,d){var e;e=0;if(d===undefined)d=[];for(;b>=32;b-=32){d.push(c);c=0}if(b===0)return d.concat(a);
for(e=0;e<a.length;e++){d.push(c|a[e]>>>b);c=a[e]<<32-b}e=a.length?a[a.length-1]:0;a=sjcl.bitArray.getPartial(e);d.push(sjcl.bitArray.partial(b+a&31,b+a>32?c:d.pop(),1));return d},l:function(a,b){return[a[0]^b[0],a[1]^b[1],a[2]^b[2],a[3]^b[3]]}};
sjcl.codec.utf8String={fromBits:function(a){var b="",c=sjcl.bitArray.bitLength(a),d,e;for(d=0;d<c/8;d++){if((d&3)===0)e=a[d/4];b+=String.fromCharCode(e>>>24);e<<=8}return decodeURIComponent(escape(b))},toBits:function(a){a=unescape(encodeURIComponent(a));var b=[],c,d=0;for(c=0;c<a.length;c++){d=d<<8|a.charCodeAt(c);if((c&3)===3){b.push(d);d=0}}c&3&&b.push(sjcl.bitArray.partial(8*(c&3),d));return b}};
sjcl.codec.base64={g:"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/",fromBits:function(a,b){var c="",d,e=0,i=sjcl.codec.base64.g,f=0,g=sjcl.bitArray.bitLength(a);for(d=0;c.length*6<g;){c+=i.charAt((f^a[d]>>>e)>>>26);if(e<6){f=a[d]<<6-e;e+=26;d++}else{f<<=6;e-=6}}for(;c.length&3&&!b;)c+="=";return c},toBits:function(a){a=a.replace(/\s|=/g,"");var b=[],c,d=0,e=sjcl.codec.base64.g,i=0,f;for(c=0;c<a.length;c++){f=e.indexOf(a.charAt(c));if(f<0)throw new sjcl.exception.invalid("this isn't base64!");
if(d>26){d-=26;b.push(i^f>>>d);i=f<<32-d}else{d+=6;i^=f<<32-d}}d&56&&b.push(sjcl.bitArray.partial(d&56,i,1));return b}};sjcl.hash.sha256=function(a){this.e[0]||this.k();if(a){this.d=a.d.slice(0);this.b=a.b.slice(0);this.a=a.a}else this.reset()};sjcl.hash.sha256.hash=function(a){return(new sjcl.hash.sha256).update(a).finalize()};
sjcl.hash.sha256.prototype={blockSize:512,reset:function(){this.d=this.i.slice(0);this.b=[];this.a=0;return this},update:function(a){if(typeof a==="string")a=sjcl.codec.utf8String.toBits(a);var b,c=this.b=sjcl.bitArray.concat(this.b,a);b=this.a;a=this.a=b+sjcl.bitArray.bitLength(a);for(b=512+b&-512;b<=a;b+=512)this.f(c.splice(0,16));return this},finalize:function(){var a,b=this.b,c=this.d;b=sjcl.bitArray.concat(b,[sjcl.bitArray.partial(1,1)]);for(a=b.length+2;a&15;a++)b.push(0);b.push(Math.floor(this.a/
4294967296));for(b.push(this.a|0);b.length;)this.f(b.splice(0,16));this.reset();return c},i:[],e:[],k:function(){function a(e){return(e-Math.floor(e))*0x100000000|0}var b=0,c=2,d;a:for(;b<64;c++){for(d=2;d*d<=c;d++)if(c%d===0)continue a;if(b<8)this.i[b]=a(Math.pow(c,0.5));this.e[b]=a(Math.pow(c,1/3));b++}},f:function(a){var b,c,d=a.slice(0),e=this.d,i=this.e,f=e[0],g=e[1],j=e[2],l=e[3],h=e[4],m=e[5],k=e[6],n=e[7];for(a=0;a<64;a++){if(a<16)b=d[a];else{b=d[a+1&15];c=d[a+14&15];b=d[a&15]=(b>>>7^b>>>18^
b>>>3^b<<25^b<<14)+(c>>>17^c>>>19^c>>>10^c<<15^c<<13)+d[a&15]+d[a+9&15]|0}b=b+n+(h>>>6^h>>>11^h>>>25^h<<26^h<<21^h<<7)+(k^h&(m^k))+i[a];n=k;k=m;m=h;h=l+b|0;l=j;j=g;g=f;f=b+(g&j^l&(g^j))+(g>>>2^g>>>13^g>>>22^g<<30^g<<19^g<<10)|0}e[0]=e[0]+f|0;e[1]=e[1]+g|0;e[2]=e[2]+j|0;e[3]=e[3]+l|0;e[4]=e[4]+h|0;e[5]=e[5]+m|0;e[6]=e[6]+k|0;e[7]=e[7]+n|0}};
sjcl.misc.hmac=function(a,b){this.h=b=b||sjcl.hash.sha256;var c=[[],[]],d=b.prototype.blockSize/32;this.c=[new b,new b];if(a.length>d)a=b.hash(a);for(b=0;b<d;b++){c[0][b]=a[b]^909522486;c[1][b]=a[b]^1549556828}this.c[0].update(c[0]);this.c[1].update(c[1])};sjcl.misc.hmac.prototype.encrypt=sjcl.misc.hmac.prototype.mac=function(a,b){a=(new this.h(this.c[0])).update(a,b).finalize();return(new this.h(this.c[1])).update(a).finalize()};