// Depends on jsbn.js and rng.js

// Version 1.1: support utf-8 encoding in pkcs1pad2
function parseBigInt(b,a){return new BigInteger(b,a)}function linebrk(c,d){var a="";var b=0;while(b+d<c.length){a+=c.substring(b,b+d)+"\n";b+=d}return a+c.substring(b,c.length)}function byte2Hex(a){if(a<16){return"0"+a.toString(16)}else{return a.toString(16)}}function pkcs1pad2(e,h){if(h<e.length+11){alert("Message too long for RSA");return null}var g=new Array();var d=e.length-1;while(d>=0&&h>0){var f=e.charCodeAt(d--);if(f<128){g[--h]=f}else{if((f>127)&&(f<2048)){g[--h]=(f&63)|128;g[--h]=(f>>6)|192}else{g[--h]=(f&63)|128;g[--h]=((f>>6)&63)|128;g[--h]=(f>>12)|224}}}g[--h]=0;var b=new SecureRandom();var a=new Array();while(h>2){a[0]=0;while(a[0]==0){b.nextBytes(a)}g[--h]=a[0]}g[--h]=2;g[--h]=0;return new BigInteger(g)}function RSAKey(){this.n=null;this.e=0;this.d=null;this.p=null;this.q=null;this.dmp1=null;this.dmq1=null;this.coeff=null}function RSASetPublic(b,a){if(b!=null&&a!=null&&b.length>0&&a.length>0){this.n=parseBigInt(b,16);this.e=parseInt(a,16)}else{alert("Invalid RSA public key")}}function RSADoPublic(a){return a.modPowInt(this.e,this.n)}function RSAEncrypt(d){var a=pkcs1pad2(d,(this.n.bitLength()+7)>>3);if(a==null){return null}var e=this.doPublic(a);if(e==null){return null}var b=e.toString(16);if((b.length&1)==0){return b}else{return"0"+b}}RSAKey.prototype.doPublic=RSADoPublic;RSAKey.prototype.setPublic=RSASetPublic;RSAKey.prototype.encrypt=RSAEncrypt;