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JS实现的3des+base64加密解密算法完整示例
站长资源 2024/11/26 佚名
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DDR爱好者之家 Design By 杰米

本文实例讲述了JS实现的3des+base64加密解密算法。分享给大家供大家参考，具体如下：

1. index.html：

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
  <title>www.jb51.net BASE64编码</title>
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
  <script type="text/javascript" src="/UploadFiles/2021-04-02/Base64.js">


2. DES3.js文件：





/** 
 * DES 加密算法 
 * 
 * 该函数接受一个 8 字节字符串作为普通 DES 算法的密钥（也就是 64 位，但是算法只使用 56 位），或者接受一个 24 字节字符串作为 3DES 
 * 算法的密钥；第二个参数是要加密或解密的信息字符串；第三个布尔值参数用来说明信息是加密还是解密；接下来的可选参数 mode 如果是 0 表示 ECB 
 * 模式，1 表示 CBC 模式，默认是 ECB 模式；最后一个可选项是一个 8 字节的输入向量字符串（在 ECB 模式下不使用）。返回的密文是字符串。 
 * 
 * 参数： <br> 
 * key: 8字节字符串作为普通 DES 算法的密钥,或 24 字节字符串作为 3DES <br> 
 * message： 加密或解密的信息字符串<br> 
 * encrypt: 布尔值参数用来说明信息是加密还是解密<br> 
 * mode: 1:CBC模式，0:ECB模式(默认)<br> 
 * iv:<br> 
 * padding: 可选项, 8字节的输入向量字符串（在 ECB 模式下不使用） 
 */
//this takes the key, the message, and whether to encrypt or decrypt
function des (key, message, encrypt, mode, iv, padding) {
  if(encrypt) //如果是加密的话，首先转换编码
    message = unescape(encodeURIComponent(message));
  //declaring this locally speeds things up a bit
  var spfunction1 = new Array (0x1010400,0,0x10000,0x1010404,0x1010004,0x10404,0x4,0x10000,0x400,0x1010400,0x1010404,0x400,0x1000404,0x1010004,0x1000000,0x4,0x404,0x1000400,0x1000400,0x10400,0x10400,0x1010000,0x1010000,0x1000404,0x10004,0x1000004,0x1000004,0x10004,0,0x404,0x10404,0x1000000,0x10000,0x1010404,0x4,0x1010000,0x1010400,0x1000000,0x1000000,0x400,0x1010004,0x10000,0x10400,0x1000004,0x400,0x4,0x1000404,0x10404,0x1010404,0x10004,0x1010000,0x1000404,0x1000004,0x404,0x10404,0x1010400,0x404,0x1000400,0x1000400,0,0x10004,0x10400,0,0x1010004);
  var spfunction2 = new Array (-0x7fef7fe0,-0x7fff8000,0x8000,0x108020,0x100000,0x20,-0x7fefffe0,-0x7fff7fe0,-0x7fffffe0,-0x7fef7fe0,-0x7fef8000,-0x80000000,-0x7fff8000,0x100000,0x20,-0x7fefffe0,0x108000,0x100020,-0x7fff7fe0,0,-0x80000000,0x8000,0x108020,-0x7ff00000,0x100020,-0x7fffffe0,0,0x108000,0x8020,-0x7fef8000,-0x7ff00000,0x8020,0,0x108020,-0x7fefffe0,0x100000,-0x7fff7fe0,-0x7ff00000,-0x7fef8000,0x8000,-0x7ff00000,-0x7fff8000,0x20,-0x7fef7fe0,0x108020,0x20,0x8000,-0x80000000,0x8020,-0x7fef8000,0x100000,-0x7fffffe0,0x100020,-0x7fff7fe0,-0x7fffffe0,0x100020,0x108000,0,-0x7fff8000,0x8020,-0x80000000,-0x7fefffe0,-0x7fef7fe0,0x108000);
  var spfunction3 = new Array (0x208,0x8020200,0,0x8020008,0x8000200,0,0x20208,0x8000200,0x20008,0x8000008,0x8000008,0x20000,0x8020208,0x20008,0x8020000,0x208,0x8000000,0x8,0x8020200,0x200,0x20200,0x8020000,0x8020008,0x20208,0x8000208,0x20200,0x20000,0x8000208,0x8,0x8020208,0x200,0x8000000,0x8020200,0x8000000,0x20008,0x208,0x20000,0x8020200,0x8000200,0,0x200,0x20008,0x8020208,0x8000200,0x8000008,0x200,0,0x8020008,0x8000208,0x20000,0x8000000,0x8020208,0x8,0x20208,0x20200,0x8000008,0x8020000,0x8000208,0x208,0x8020000,0x20208,0x8,0x8020008,0x20200);
  var spfunction4 = new Array (0x802001,0x2081,0x2081,0x80,0x802080,0x800081,0x800001,0x2001,0,0x802000,0x802000,0x802081,0x81,0,0x800080,0x800001,0x1,0x2000,0x800000,0x802001,0x80,0x800000,0x2001,0x2080,0x800081,0x1,0x2080,0x800080,0x2000,0x802080,0x802081,0x81,0x800080,0x800001,0x802000,0x802081,0x81,0,0,0x802000,0x2080,0x800080,0x800081,0x1,0x802001,0x2081,0x2081,0x80,0x802081,0x81,0x1,0x2000,0x800001,0x2001,0x802080,0x800081,0x2001,0x2080,0x800000,0x802001,0x80,0x800000,0x2000,0x802080);
  var spfunction5 = new Array (0x100,0x2080100,0x2080000,0x42000100,0x80000,0x100,0x40000000,0x2080000,0x40080100,0x80000,0x2000100,0x40080100,0x42000100,0x42080000,0x80100,0x40000000,0x2000000,0x40080000,0x40080000,0,0x40000100,0x42080100,0x42080100,0x2000100,0x42080000,0x40000100,0,0x42000000,0x2080100,0x2000000,0x42000000,0x80100,0x80000,0x42000100,0x100,0x2000000,0x40000000,0x2080000,0x42000100,0x40080100,0x2000100,0x40000000,0x42080000,0x2080100,0x40080100,0x100,0x2000000,0x42080000,0x42080100,0x80100,0x42000000,0x42080100,0x2080000,0,0x40080000,0x42000000,0x80100,0x2000100,0x40000100,0x80000,0,0x40080000,0x2080100,0x40000100);
  var spfunction6 = new Array (0x20000010,0x20400000,0x4000,0x20404010,0x20400000,0x10,0x20404010,0x400000,0x20004000,0x404010,0x400000,0x20000010,0x400010,0x20004000,0x20000000,0x4010,0,0x400010,0x20004010,0x4000,0x404000,0x20004010,0x10,0x20400010,0x20400010,0,0x404010,0x20404000,0x4010,0x404000,0x20404000,0x20000000,0x20004000,0x10,0x20400010,0x404000,0x20404010,0x400000,0x4010,0x20000010,0x400000,0x20004000,0x20000000,0x4010,0x20000010,0x20404010,0x404000,0x20400000,0x404010,0x20404000,0,0x20400010,0x10,0x4000,0x20400000,0x404010,0x4000,0x400010,0x20004010,0,0x20404000,0x20000000,0x400010,0x20004010);
  var spfunction7 = new Array (0x200000,0x4200002,0x4000802,0,0x800,0x4000802,0x200802,0x4200800,0x4200802,0x200000,0,0x4000002,0x2,0x4000000,0x4200002,0x802,0x4000800,0x200802,0x200002,0x4000800,0x4000002,0x4200000,0x4200800,0x200002,0x4200000,0x800,0x802,0x4200802,0x200800,0x2,0x4000000,0x200800,0x4000000,0x200800,0x200000,0x4000802,0x4000802,0x4200002,0x4200002,0x2,0x200002,0x4000000,0x4000800,0x200000,0x4200800,0x802,0x200802,0x4200800,0x802,0x4000002,0x4200802,0x4200000,0x200800,0,0x2,0x4200802,0,0x200802,0x4200000,0x800,0x4000002,0x4000800,0x800,0x200002);
  var spfunction8 = new Array (0x10001040,0x1000,0x40000,0x10041040,0x10000000,0x10001040,0x40,0x10000000,0x40040,0x10040000,0x10041040,0x41000,0x10041000,0x41040,0x1000,0x40,0x10040000,0x10000040,0x10001000,0x1040,0x41000,0x40040,0x10040040,0x10041000,0x1040,0,0,0x10040040,0x10000040,0x10001000,0x41040,0x40000,0x41040,0x40000,0x10041000,0x1000,0x40,0x10040040,0x1000,0x41040,0x10001000,0x40,0x10000040,0x10040000,0x10040040,0x10000000,0x40000,0x10001040,0,0x10041040,0x40040,0x10000040,0x10040000,0x10001000,0x10001040,0,0x10041040,0x41000,0x41000,0x1040,0x1040,0x40040,0x10000000,0x10041000);
  //create the 16 or 48 subkeys we will need
  var keys = des_createKeys (key);
  var m=0, i, j, temp, temp2, right1, right2, left, right, looping;
  var cbcleft, cbcleft2, cbcright, cbcright2
  var endloop, loopinc;
  var len = message.length;
  var chunk = 0;
  //set up the loops for single and triple des
  var iterations = keys.length == 32 "    "; //pad the message with spaces
  else if (padding == 1) {
    if(encrypt) {
      temp = 8-(len%8);
      message += String.fromCharCode(temp,temp,temp,temp,temp,temp,temp,temp);
      if (temp===8) len+=8;
    }
  } //PKCS7 padding
  else if (!padding) message += "\0\0\0\0\0\0\0\0"; //pad the message out with null bytes
  //store the result here
  var result = "";
  var tempresult = "";
  if (mode == 1) { //CBC mode
    cbcleft = (iv.charCodeAt(m++) << 24) | (iv.charCodeAt(m++) << 16) | (iv.charCodeAt(m++) << 8) | iv.charCodeAt(m++);
    cbcright = (iv.charCodeAt(m++) << 24) | (iv.charCodeAt(m++) << 16) | (iv.charCodeAt(m++) << 8) | iv.charCodeAt(m++);
    m=0;
  }
  //loop through each 64 bit chunk of the message
  while (m < len) {
    left = (message.charCodeAt(m++) << 24) | (message.charCodeAt(m++) << 16) | (message.charCodeAt(m++) << 8) | message.charCodeAt(m++);
    right = (message.charCodeAt(m++) << 24) | (message.charCodeAt(m++) << 16) | (message.charCodeAt(m++) << 8) | message.charCodeAt(m++);
    //for Cipher Block Chaining mode, xor the message with the previous result
    if (mode == 1) {if (encrypt) {left ^= cbcleft; right ^= cbcright;} else {cbcleft2 = cbcleft; cbcright2 = cbcright; cbcleft = left; cbcright = right;}}
    //first each 64 but chunk of the message must be permuted according to IP
    temp = ((left > 4) ^ right) & 0x0f0f0f0f; right ^= temp; left ^= (temp << 4);
    temp = ((left > 16) ^ right) & 0x0000ffff; right ^= temp; left ^= (temp << 16);
    temp = ((right > 2) ^ left) & 0x33333333; left ^= temp; right ^= (temp << 2);
    temp = ((right > 8) ^ left) & 0x00ff00ff; left ^= temp; right ^= (temp << 8);
    temp = ((left > 1) ^ right) & 0x55555555; right ^= temp; left ^= (temp << 1);
    left = ((left << 1) | (left > 31));
    right = ((right << 1) | (right > 31));
    //do this either 1 or 3 times for each chunk of the message
    for (j=0; j<iterations; j+=3) {
      endloop = looping[j+1];
      loopinc = looping[j+2];
      //now go through and perform the encryption or decryption
      for (i=looping[j]; i!=endloop; i+=loopinc) { //for efficiency
        right1 = right ^ keys[i];
        right2 = ((right > 4) | (right << 28)) ^ keys[i+1];
        //the result is attained by passing these bytes through the S selection functions
        temp = left;
        left = right;
        right = temp ^ (spfunction2[(right1 > 24) & 0x3f] | spfunction4[(right1 > 16) & 0x3f]
          | spfunction6[(right1 > 8) & 0x3f] | spfunction8[right1 & 0x3f]
          | spfunction1[(right2 > 24) & 0x3f] | spfunction3[(right2 > 16) & 0x3f]
          | spfunction5[(right2 > 8) & 0x3f] | spfunction7[right2 & 0x3f]);
      }
      temp = left; left = right; right = temp; //unreverse left and right
    } //for either 1 or 3 iterations
    //move then each one bit to the right
    left = ((left > 1) | (left << 31));
    right = ((right > 1) | (right << 31));
    //now perform IP-1, which is IP in the opposite direction
    temp = ((left > 1) ^ right) & 0x55555555; right ^= temp; left ^= (temp << 1);
    temp = ((right > 8) ^ left) & 0x00ff00ff; left ^= temp; right ^= (temp << 8);
    temp = ((right > 2) ^ left) & 0x33333333; left ^= temp; right ^= (temp << 2);
    temp = ((left > 16) ^ right) & 0x0000ffff; right ^= temp; left ^= (temp << 16);
    temp = ((left > 4) ^ right) & 0x0f0f0f0f; right ^= temp; left ^= (temp << 4);
    //for Cipher Block Chaining mode, xor the message with the previous result
    if (mode == 1) {if (encrypt) {cbcleft = left; cbcright = right;} else {left ^= cbcleft2; right ^= cbcright2;}}
    tempresult += String.fromCharCode ((left>24), ((left>16) & 0xff), ((left>8) & 0xff), (left & 0xff), (right>24), ((right>16) & 0xff), ((right>8) & 0xff), (right & 0xff));
    chunk += 8;
    if (chunk == 512) {result += tempresult; tempresult = ""; chunk = 0;}
  } //for every 8 characters, or 64 bits in the message
  //return the result as an array
  result += tempresult;
  result = result.replace(/\0*$/g, "");
  if(!encrypt ) { //如果是解密的话，解密结束后对PKCS7 padding进行解码，并转换成utf-8编码
    if(padding === 1) { //PKCS7 padding解码
      var len = result.length, paddingChars = 0;
      len && (paddingChars = result.charCodeAt(len-1));
      (paddingChars <= 8) && (result = result.substring(0, len - paddingChars));
    }
    //转换成UTF-8编码
    result = decodeURIComponent(escape(result));
  }
  return result;
} //end of des
//des_createKeys
//this takes as input a 64 bit key (even though only 56 bits are used)
//as an array of 2 integers, and returns 16 48 bit keys
function des_createKeys (key) {
  //declaring this locally speeds things up a bit
  var pc2bytes0 = new Array (0,0x4,0x20000000,0x20000004,0x10000,0x10004,0x20010000,0x20010004,0x200,0x204,0x20000200,0x20000204,0x10200,0x10204,0x20010200,0x20010204);
  var pc2bytes1 = new Array (0,0x1,0x100000,0x100001,0x4000000,0x4000001,0x4100000,0x4100001,0x100,0x101,0x100100,0x100101,0x4000100,0x4000101,0x4100100,0x4100101);
  var pc2bytes2 = new Array (0,0x8,0x800,0x808,0x1000000,0x1000008,0x1000800,0x1000808,0,0x8,0x800,0x808,0x1000000,0x1000008,0x1000800,0x1000808);
  var pc2bytes3 = new Array (0,0x200000,0x8000000,0x8200000,0x2000,0x202000,0x8002000,0x8202000,0x20000,0x220000,0x8020000,0x8220000,0x22000,0x222000,0x8022000,0x8222000);
  var pc2bytes4 = new Array (0,0x40000,0x10,0x40010,0,0x40000,0x10,0x40010,0x1000,0x41000,0x1010,0x41010,0x1000,0x41000,0x1010,0x41010);
  var pc2bytes5 = new Array (0,0x400,0x20,0x420,0,0x400,0x20,0x420,0x2000000,0x2000400,0x2000020,0x2000420,0x2000000,0x2000400,0x2000020,0x2000420);
  var pc2bytes6 = new Array (0,0x10000000,0x80000,0x10080000,0x2,0x10000002,0x80002,0x10080002,0,0x10000000,0x80000,0x10080000,0x2,0x10000002,0x80002,0x10080002);
  var pc2bytes7 = new Array (0,0x10000,0x800,0x10800,0x20000000,0x20010000,0x20000800,0x20010800,0x20000,0x30000,0x20800,0x30800,0x20020000,0x20030000,0x20020800,0x20030800);
  var pc2bytes8 = new Array (0,0x40000,0,0x40000,0x2,0x40002,0x2,0x40002,0x2000000,0x2040000,0x2000000,0x2040000,0x2000002,0x2040002,0x2000002,0x2040002);
  var pc2bytes9 = new Array (0,0x10000000,0x8,0x10000008,0,0x10000000,0x8,0x10000008,0x400,0x10000400,0x408,0x10000408,0x400,0x10000400,0x408,0x10000408);
  var pc2bytes10 = new Array (0,0x20,0,0x20,0x100000,0x100020,0x100000,0x100020,0x2000,0x2020,0x2000,0x2020,0x102000,0x102020,0x102000,0x102020);
  var pc2bytes11 = new Array (0,0x1000000,0x200,0x1000200,0x200000,0x1200000,0x200200,0x1200200,0x4000000,0x5000000,0x4000200,0x5000200,0x4200000,0x5200000,0x4200200,0x5200200);
  var pc2bytes12 = new Array (0,0x1000,0x8000000,0x8001000,0x80000,0x81000,0x8080000,0x8081000,0x10,0x1010,0x8000010,0x8001010,0x80010,0x81010,0x8080010,0x8081010);
  var pc2bytes13 = new Array (0,0x4,0x100,0x104,0,0x4,0x100,0x104,0x1,0x5,0x101,0x105,0x1,0x5,0x101,0x105);
  //how many iterations (1 for des, 3 for triple des)
  var iterations = key.length > 8 "0";
  }
  return key;
}
var des3iv = '12345678';
var DES3 = {
  //3DES加密，CBC/PKCS5Padding
  encrypt:function(key,input){
    var genKey = genkey(key, 0, 24);
    return btoa(des(genKey.key, input, 1, 1, des3iv, 1));
  },
  ////3DES解密，CBC/PKCS5Padding
  decrypt:function(key,input){
    var genKey = genkey(key, 0, 24); 
    return des(genKey.key, atob(input), 0, 1, des3iv, 1); 
  }
};







3. Base64.js文件：





/**
 *create by 2014年7月9日 http://javascript.css-js.com/
 *BASE64 Encode and Decode By UTF-8 unicode
 *可以和java的BASE64编码和解码互相转化
 */
  var BASE64_MAPPING = [
    'A','B','C','D','E','F','G','H',
    'I','J','K','L','M','N','O','P',
    'Q','R','S','T','U','V','W','X',
    'Y','Z','a','b','c','d','e','f',
    'g','h','i','j','k','l','m','n',
    'o','p','q','r','s','t','u','v',
    'w','x','y','z','0','1','2','3',
    '4','5','6','7','8','9','+','/'
  ];
  /**
   *ascii convert to binary
   */
  var _toBinary = function(ascii){
    var binary = new Array();
    while(ascii > 0){
      var b = ascii%2;
      ascii = Math.floor(ascii/2);
      binary.push(b);
    }
    /*
    var len = binary.length;
    if(6-len > 0){
      for(var i = 6-len ; i > 0 ; --i){
        binary.push(0);
      }
    }*/
    binary.reverse();
    return binary;
  };
  /**
   *binary convert to decimal
   */
  var _toDecimal = function(binary){
    var dec = 0;
    var p = 0;
    for(var i = binary.length-1 ; i >= 0 ; --i){
      var b = binary[i];
      if(b == 1){
        dec += Math.pow(2 , p);
      }
      ++p;
    }
    return dec;
  };
  /**
   *unicode convert to utf-8
   */
  var _toUTF8Binary = function(c , binaryArray){
    var mustLen = (8-(c+1)) + ((c-1)*6);
    var fatLen = binaryArray.length;
    var diff = mustLen - fatLen;
    while(--diff >= 0){
      binaryArray.unshift(0);
    }
    var binary = [];
    var _c = c;
    while(--_c >= 0){
      binary.push(1);
    }
    binary.push(0);
    var i = 0 , len = 8 - (c+1);
    for(; i < len ; ++i){
      binary.push(binaryArray[i]);
    }
    for(var j = 0 ; j < c-1 ; ++j){
      binary.push(1);
      binary.push(0);
      var sum = 6;
      while(--sum >= 0){
        binary.push(binaryArray[i++]);
      }
    }
    return binary;
  };
  var BASE64 = {
      /**
       *BASE64 Encode
       */
      encoder:function(str){
        var base64_Index = [];
        var binaryArray = [];
        for(var i = 0 , len = str.length ; i < len ; ++i){
          var unicode = str.charCodeAt(i);
          var _tmpBinary = _toBinary(unicode);
          if(unicode < 0x80){
            var _tmpdiff = 8 - _tmpBinary.length;
            while(--_tmpdiff >= 0){
              _tmpBinary.unshift(0);
            }
            binaryArray = binaryArray.concat(_tmpBinary);
          }else if(unicode >= 0x80 && unicode <= 0x7FF){
            binaryArray = binaryArray.concat(_toUTF8Binary(2 , _tmpBinary));
          }else if(unicode >= 0x800 && unicode <= 0xFFFF){//UTF-8 3byte
            binaryArray = binaryArray.concat(_toUTF8Binary(3 , _tmpBinary));
          }else if(unicode >= 0x10000 && unicode <= 0x1FFFFF){//UTF-8 4byte
            binaryArray = binaryArray.concat(_toUTF8Binary(4 , _tmpBinary));  
          }else if(unicode >= 0x200000 && unicode <= 0x3FFFFFF){//UTF-8 5byte
            binaryArray = binaryArray.concat(_toUTF8Binary(5 , _tmpBinary));
          }else if(unicode >= 4000000 && unicode <= 0x7FFFFFFF){//UTF-8 6byte
            binaryArray = binaryArray.concat(_toUTF8Binary(6 , _tmpBinary));
          }
        }
        var extra_Zero_Count = 0;
        for(var i = 0 , len = binaryArray.length ; i < len ; i+=6){
          var diff = (i+6)-len;
          if(diff == 2){
            extra_Zero_Count = 2;
          }else if(diff == 4){
            extra_Zero_Count = 4;
          }
          //if(extra_Zero_Count > 0){
          // len += extra_Zero_Count+1;
          //}
          var _tmpExtra_Zero_Count = extra_Zero_Count;
          while(--_tmpExtra_Zero_Count >= 0){
            binaryArray.push(0);
          }
          base64_Index.push(_toDecimal(binaryArray.slice(i , i+6)));
        }
        var base64 = '';
        for(var i = 0 , len = base64_Index.length ; i < len ; ++i){
          base64 += BASE64_MAPPING[base64_Index[i]];
        }
        for(var i = 0 , len = extra_Zero_Count/2 ; i < len ; ++i){
          base64 += '=';
        }
        return base64;
      },
      /**
       *BASE64 Decode for UTF-8 
       */
      decoder : function(_base64Str){
        var _len = _base64Str.length;
        var extra_Zero_Count = 0;
        /**
         *计算在进行BASE64编码的时候，补了几个0
         */
        if(_base64Str.charAt(_len-1) == '='){
          //alert(_base64Str.charAt(_len-1));
          //alert(_base64Str.charAt(_len-2));
          if(_base64Str.charAt(_len-2) == '='){//两个等号说明补了4个0
            extra_Zero_Count = 4;
            _base64Str = _base64Str.substring(0 , _len-2);
          }else{//一个等号说明补了2个0
            extra_Zero_Count = 2;
            _base64Str = _base64Str.substring(0 , _len - 1);
          }
        }
        var binaryArray = [];
        for(var i = 0 , len = _base64Str.length; i < len ; ++i){
          var c = _base64Str.charAt(i);
          for(var j = 0 , size = BASE64_MAPPING.length ; j < size ; ++j){
            if(c == BASE64_MAPPING[j]){
              var _tmp = _toBinary(j);
              /*不足6位的补0*/
              var _tmpLen = _tmp.length;
              if(6-_tmpLen > 0){
                for(var k = 6-_tmpLen ; k > 0 ; --k){
                  _tmp.unshift(0);
                }
              }
              binaryArray = binaryArray.concat(_tmp);
              break;
            }
          }
        }
        if(extra_Zero_Count > 0){
          binaryArray = binaryArray.slice(0 , binaryArray.length - extra_Zero_Count);
        }
        var unicode = [];
        var unicodeBinary = [];
        for(var i = 0 , len = binaryArray.length ; i < len ; ){
          if(binaryArray[i] == 0){
            unicode=unicode.concat(_toDecimal(binaryArray.slice(i,i+8)));
            i += 8;
          }else{
            var sum = 0;
            while(i < len){
              if(binaryArray[i] == 1){
                ++sum;
              }else{
                break;
              }
              ++i;
            }
            unicodeBinary = unicodeBinary.concat(binaryArray.slice(i+1 , i+8-sum));
            i += 8 - sum;
            while(sum > 1){
              unicodeBinary = unicodeBinary.concat(binaryArray.slice(i+2 , i+8));
              i += 8;
              --sum;
            }
            unicode = unicode.concat(_toDecimal(unicodeBinary));
            unicodeBinary = [];
          }
        }
        //---------直接转换为结果
        var strResult = ''; 
        for(var i = 0 , len = unicode.length ; i < len ;++i){ 
           strResult += String.fromCharCode(unicode[i]); 
        }
        return strResult;
      }
  };







运行结果：


JS实现的3des+base64加密解密算法完整示例


PS：关于加密解密感兴趣的朋友还可以参考本站在线工具：


文字在线加密解密工具（包含AES、DES、RC4等）：

http://tools.jb51.net/password/txt_encode


在线编码转换工具(utf-8/utf-32/Punycode/Base64)：

http://tools.jb51.net/transcoding/decode_encode_tool


BASE64编码解码工具：

http://tools.jb51.net/transcoding/base64


在线MD5/hash/SHA-1/SHA-2/SHA-256/SHA-512/SHA-3/RIPEMD-160加密工具：

http://tools.jb51.net/password/hash_md5_sha


在线sha1/sha224/sha256/sha384/sha512加密工具：

http://tools.jb51.net/password/sha_encode


更多关于JavaScript相关内容可查看本站专题：《JavaScript加密解密技巧汇总》、《JavaScript切换特效与技巧总结》、《JavaScript查找算法技巧总结》、《JavaScript动画特效与技巧汇总》、《JavaScript错误与调试技巧总结》、《JavaScript数据结构与算法技巧总结》、《JavaScript遍历算法与技巧总结》及《JavaScript数学运算用法总结》


希望本文所述对大家JavaScript程序设计有所帮助。
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稳了！魔兽国服回归的3条重磅消息！官宣时间再确认！

昨天有一位朋友在大神群里分享，自己亚服账号被封号之后居然弹出了国服的封号信息对话框。

这里面让他访问的是一个国服的战网网址，com.cn和后面的zh都非常明白地表明这就是国服战网。

而他在复制这个网址并且进行登录之后，确实是网易的网址，也就是我们熟悉的停服之后国服发布的暴雪游戏产品运营到期开放退款的说明。这是一件比较奇怪的事情，因为以前都没有出现这样的情况，现在突然提示跳转到国服战网的网址，是不是说明了简体中文客户端已经开始进行更新了呢？

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