jsrsa.min.js 3.8 KB

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  1. var b64map="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";var b64pad="=";var base64DecodeChars=new Array(-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,62,-1,-1,-1,63,52,53,54,55,56,57,58,59,60,61,-1,-1,-1,-1,-1,-1,-1,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,-1,-1,-1,-1,-1,-1,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,-1,-1,-1,-1,-1);function btoa(str){var out,i,len;var c1,c2,c3;len=str.length;i=0;out="";while(i<len){c1=str.charCodeAt(i++)&255;if(i==len){out+=b64map.charAt(c1>>2);out+=b64map.charAt((c1&3)<<4);out+="==";break}c2=str.charCodeAt(i++);if(i==len){out+=b64map.charAt(c1>>2);out+=b64map.charAt((c1&3)<<4|(c2&240)>>4);out+=b64map.charAt((c2&15)<<2);out+="=";break}c3=str.charCodeAt(i++);out+=b64map.charAt(c1>>2);out+=b64map.charAt((c1&3)<<4|(c2&240)>>4);out+=b64map.charAt((c2&15)<<2|(c3&192)>>6);out+=b64map.charAt(c3&63)}return out}function atob(str){var c1,c2,c3,c4;var i,len,out;len=str.length;i=0;out="";while(i<len){do{c1=base64DecodeChars[str.charCodeAt(i++)&255]}while(i<len&&c1==-1);if(c1==-1)break;do{c2=base64DecodeChars[str.charCodeAt(i++)&255]}while(i<len&&c2==-1);if(c2==-1)break;out+=String.fromCharCode(c1<<2|(c2&48)>>4);do{c3=str.charCodeAt(i++)&255;if(c3==61)return out;c3=base64DecodeChars[c3]}while(i<len&&c3==-1);if(c3==-1)break;out+=String.fromCharCode((c2&15)<<4|(c3&60)>>2);do{c4=str.charCodeAt(i++)&255;if(c4==61)return out;c4=base64DecodeChars[c4]}while(i<len&&c4==-1);if(c4==-1)break;out+=String.fromCharCode((c3&3)<<6|c4)}return out}function hex2b64(h){var i;var c;var ret="";for(i=0;i+3<=h.length;i+=3){c=parseInt(h.substring(i,i+3),16);ret+=b64map.charAt(c>>6)+b64map.charAt(c&63)}if(i+1==h.length){c=parseInt(h.substring(i,i+1),16);ret+=b64map.charAt(c<<2)}else if(i+2==h.length){c=parseInt(h.substring(i,i+2),16);ret+=b64map.charAt(c>>2)+b64map.charAt((c&3)<<4)}while((ret.length&3)>0)ret+=b64pad;return ret}function hexToBytes(hex){for(var bytes=[],c=0;c<hex.length;c+=2)bytes.push(parseInt(hex.substr(c,2),16));return bytes}function bytesToHex(bytes){for(var hex=[],i=0;i<bytes.length;i++){hex.push((bytes[i]>>>4).toString(16));hex.push((bytes[i]&15).toString(16))}return hex.join("")}function b64tohex(str){for(var i=0,bin=atob(str.replace(/[ \r\n]+$/,"")),hex=[];i<bin.length;++i){var tmp=bin.charCodeAt(i).toString(16);if(tmp.length===1)tmp="0"+tmp;hex[hex.length]=tmp}return hex.join("")}function addPreZero(num,length){var t=(num+"").length,s="";for(var i=0;i<length-t;i++){s+="0"}return s+num}JSEncrypt.prototype.getkeylength=function(){return this.key.n.bitLength()+7>>3};JSEncrypt.prototype.decryptUnicodeLong=function(string){var k=this.getKey();var maxLength=(k.n.bitLength()+7>>3)*2;try{var hexString=b64tohex(string);var decryptedString="";var rexStr=".{1,"+maxLength+"}";var rex=new RegExp(rexStr,"g");var subStrArray=hexString.match(rex);if(subStrArray){subStrArray.forEach(function(entry){decryptedString+=k.decrypt(entry)});return decryptedString}}catch(ex){console.log("加密错误:"+ex.message);return false}};JSEncrypt.prototype.encryptUnicodeLong=function(string){var k=this.getKey();var maxLength=(k.n.bitLength()+7>>3)-11;try{var subStr="",encryptedString="";var subStart=0,subEnd=0;var bitLen=0,tmpPoint=0;for(var i=0,len=string.length;i<len;i++){var charCode=string.charCodeAt(i);if(charCode<=127){bitLen+=1}else if(charCode<=2047){bitLen+=2}else if(charCode<=65535){bitLen+=3}else{bitLen+=4}if(bitLen>maxLength){subStr=string.substring(subStart,subEnd);encryptedString+=k.encrypt(subStr);subStart=subEnd;bitLen=bitLen-tmpPoint}else{subEnd=i;tmpPoint=bitLen}}subStr=string.substring(subStart,len);encryptedString+=k.encrypt(subStr);return hex2b64(encryptedString)}catch(ex){console.log("解密错误:"+ex.message);return false}};