(function(){"use strict";var Enc=window.Encoding={};Enc.bufToBase64=function(u8){var bin="";u8.forEach(function(i){bin+=String.fromCharCode(i)});return btoa(bin)};Enc.strToBase64=function(str){return btoa(Enc.strToBin(str))};function _base64ToBin(b64){return atob(Enc.urlBase64ToBase64(b64))}Enc._base64ToBin=_base64ToBin;Enc.base64ToBuf=function(b64){return Enc.binToBuf(_base64ToBin(b64))};Enc.base64ToStr=function(b64){return Enc.binToStr(_base64ToBin(b64))};Enc.urlBase64ToBase64=function(u64){var r=u64%4;if(2===r){u64+="=="}else if(3===r){u64+="="}return u64.replace(/-/g,"+").replace(/_/g,"/")};Enc.base64ToUrlBase64=function(b64){return b64.replace(/\+/g,"-").replace(/\//g,"_").replace(/=/g,"")};Enc.bufToUrlBase64=function(buf){return Enc.base64ToUrlBase64(Enc.bufToBase64(buf))};Enc.strToUrlBase64=function(str){return Enc.bufToUrlBase64(Enc.strToBuf(str))};Enc.bufToHex=function(u8){var hex=[];var i,h;var len=u8.byteLength||u8.length;for(i=0;i<len;i+=1){h=u8[i].toString(16);if(2!==h.length){h="0"+h}hex.push(h)}return hex.join("").toLowerCase()};Enc.numToHex=function(d){d=d.toString(16);if(d.length%2){return"0"+d}return d};Enc.strToHex=function(str){return Enc._binToHex(Enc.strToBin(str))};Enc._binToHex=function(bin){return bin.split("").map(function(ch){var h=ch.charCodeAt(0).toString(16);if(2!==h.length){h="0"+h}return h}).join("")};Enc.hexToBuf=function(hex){var arr=[];hex.match(/.{2}/g).forEach(function(h){arr.push(parseInt(h,16))});return"undefined"!==typeof Uint8Array?new Uint8Array(arr):arr};Enc.hexToStr=function(hex){return Enc.binToStr(_hexToBin(hex))};function _hexToBin(hex){return hex.replace(/([0-9A-F]{2})/gi,function(_,p1){return String.fromCharCode("0x"+p1)})}Enc._hexToBin=_hexToBin;Enc.bufToBin=function(buf){var bin="";buf.forEach(function(ch){bin+=String.fromCharCode(ch)});return bin};Enc.strToBin=function(str){var escstr=encodeURIComponent(str);var binstr=escstr.replace(/%([0-9A-F]{2})/g,function(_,p1){return String.fromCharCode("0x"+p1)});return binstr};Enc.binToBuf=function(bin){var arr=bin.split("").map(function(ch){return ch.charCodeAt(0)});return"undefined"!==typeof Uint8Array?new Uint8Array(arr):arr};Enc.strToBuf=function(str){return Enc.binToBuf(Enc.strToBin(str))};Enc.binToStr=function(binstr){var escstr=binstr.replace(/(.)/g,function(m,p){var code=p.charCodeAt(0).toString(16).toUpperCase();if(code.length<2){code="0"+code}return"%"+code});return decodeURIComponent(escstr)};Enc.bufToStr=function(buf){return Enc.binToStr(Enc.bufToBin(buf))};Enc.base64ToHex=function(b64){return Enc.bufToHex(Enc.base64ToBuf(b64))};Enc.hexToBase64=function(hex){return btoa(Enc._hexToBin(hex))}})();