利用AESJs实现前端加解密

1.加密转码方法

  function encryptMethod(content, key) {
    var sKey = CryptoJS.enc.Utf8.parse(key);
    var sContent = CryptoJS.enc.Utf8.parse(content);
    var encrypted = CryptoJS.AES.encrypt(sContent, sKey, {
      mode: CryptoJS.mode.ECB,
      padding: CryptoJS.pad.Pkcs7
    })
    return encrypted.toString();
  }
  // 调用
  var encryptContents = encrypt(content, key);

2.转码解密方法

function decryptMethod(content, key) {
    var sKey = CryptoJS.enc.Utf8.parse(key);
    var decrypt = CryptoJS.AES.decrypt(content, sKey, {
      mode: CryptoJS.mode.ECB,
      padding: CryptoJS.pad.Pkcs7
    })
    return CryptoJS.enc.Utf8.stringify(decrypt).toString();
  }
  

注意：加密解密时 模式mode 和 填充padding 保持一致！

AES.js源码

!function(t,n){"object"==typeof exports?module.exports=exports=n():"function"==typeof define&&define.amd?define([],n):t.CryptoJS=n()}(this,function(){var t=t||function(t,n){var i=Object.create||function(){function t(){}return function(n){var i;return t.prototype=n,i=new t,t.prototype=null,i}}(),e={},r=e.lib={},o=r.Base=function(){return{extend:function(t){var n=i(this);return t&&n.mixIn(t),n.hasOwnProperty("init")&&this.init!==n.init||(n.init=function(){n.$super.init.apply(this,arguments)}),n.init.prototype=n,n.$super=this,n},create:function(){var t=this.extend();return t.init.apply(t,arguments),t},init:function(){},mixIn:function(t){for(var n in t)t.hasOwnProperty(n)&&(this[n]=t[n]);t.hasOwnProperty("toString")&&(this.toString=t.toString)},clone:function(){return this.init.prototype.extend(this)}}}(),s=r.WordArray=o.extend({init:function(t,i){t=this.words=t||[],i!=n?this.sigBytes=i:this.sigBytes=4*t.length},toString:function(t){return(t||c).stringify(this)},concat:function(t){var n=this.words,i=t.words,e=this.sigBytes,r=t.sigBytes;if(this.clamp(),e%4)for(var o=0;o<r;o++){var s=i[o>>>2]>>>24-o%4*8&255;n[e+o>>>2]|=s<<24-(e+o)%4*8}else for(var o=0;o<r;o+=4)n[e+o>>>2]=i[o>>>2];return this.sigBytes+=r,this},clamp:function(){var n=this.words,i=this.sigBytes;n[i>>>2]&=4294967295<<32-i%4*8,n.length=t.ceil(i/4)},clone:function(){var t=o.clone.call(this);return t.words=this.words.slice(0),t},random:function(n){for(var i,e=[],r=function(n){var n=n,i=987654321,e=4294967295;return function(){i=36969*(65535&i)+(i>>16)&e,n=18e3*(65535&n)+(n>>16)&e;var r=(i<<16)+n&e;return r/=4294967296,r+=.5,r*(t.random()>.5?1:-1)}},o=0;o<n;o+=4){var a=r(4294967296*(i||t.random()));i=987654071*a(),e.push(4294967296*a()|0)}return new s.init(e,n)}}),a=e.enc={},c=a.Hex={stringify:function(t){for(var n=t.words,i=t.sigBytes,e=[],r=0;r<i;r++){var o=n[r>>>2]>>>24-r%4*8&255;e.push((o>>>4).toString(16)),e.push((15&o).toString(16))}return e.join("")},parse:function(t){for(var n=t.length,i=[],e=0;e<n;e+=2)i[e>>>3]|=parseInt(t.substr(e,2),16)<<24-e%8*4;return new s.init(i,n/2)}},u=a.Latin1={stringify:function(t){for(var n=t.words,i=t.sigBytes,e=[],r=0;r<i;r++){var o=n[r>>>2]>>>24-r%4*8&255;e.push(String.fromCharCode(o))}return e.join("")},parse:function(t){for(var n=t.length,i=[],e=0;e<n;e++)i[e>>>2]|=(255&t.charCodeAt(e))<