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用Javascript实现数据加密解密效果

 2009-04-22 20:04:50 来源:WEB开发网   
核心提示:加密.hta代码(完全可以保存为html,执行效果一样) 程序代码<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN"><head><meta http-equiv="Content-Type" cont

加密.hta代码(完全可以保存为html,执行效果一样)


 程序代码
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>设置加密邮件内容</title>
<script type="text/javascript">
function itArt(){
     this.html="Hello";
     this.CSS="color:#000;width:640px;text-indent:20px;padding:5px;border:solid 5px #666;margin:5px;background:#CCC;margin-left:auto;margin-right:auto";
     this.length=0;
}

itArt.PRototype = {
     init:function(){
         this.length=this.html.length;
     },
     play:function(){
         this.init();
         this.setPassWord();
         this.echo();
     },
     setHtml:function(v){
         this.html=v;
     },
     setPassword:function(){
         var tmp="";
         for(var i=0;i<this.length;i++){
             tmp+="$"+this.html.charCodeAt(i);
         }
         this.html=tmp;
         tmp="";
         for(var i=0;i<this.html.length;i+=3){
             tmp+=" "+this.html.substr(i,3);
         }
         this.html=tmp;
         tmp="";
         for(var i=0;i<this.html.length;i++){
             tmp+=" "+this.html.charCodeAt(i);
         }
         this.html=tmp;
     },
     echo:function(){
         var t=document.createElement("div");
         t.innerHTML=this.html;
         if(window.ActiveXObject)
             t.style.cssText=this.css;
         else
             t.setAttribute("style",this.css);
         //不想用DOM删掉子元素了,反正各浏览器都支持
         document.getElementById("x100").innerHTML="";
         document.getElementById("x100").appendChild(t);
     }
}
function setPassword(t){
     if(t!=""){
         var demo=new itArt();
         demo.setHtml(t);
         demo.play();
     }else{
         alert("请输入内容开始加密");
     }
}
window.onload=function(){
     setPassword("你好,猜猜我给你的密文是什么? 哈哈,猜不到吧");
}
</script>
</head>
<body>
<textarea style="display:block;color:#000;width:640px;height:280px;text-indent:20px;border:solid 5px #666;margin:5px;background:#FFF;margin-left:auto;margin-right:auto" ondblclick="setPassword(this.value);" title="双击开始加密">你好,猜猜我给你的密文是什么? 哈哈,猜不到吧</textarea>
<div id="x100">
</div>
</body>
</html>


解密

 程序代码


<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>获取加密邮件内容</title>
<script type="text/Javascript">
function itArt(){
     this.html="Hello";
     this.css="color:#000;width:640px;text-indent:20px;padding:5px;border:solid 5px #666;margin:5px;background:#CCC;margin-left:auto;margin-right:auto";
     this.length=0;
}

itArt.prototype = {
     init:function(){
         this.length=this.html.length;
     },
     play:function(){
         this.init();
         this.setPassword();
         this.echo();
     },
     setHtml:function(v){
         this.html=v;
     },
     setPassword:function(){
         var tmp=this.html.split(" "),tmps="";
         for(i=0;i<tmp.length;i++){
             tmps+=String.fromCharCode(tmp[i]);
         }
         this.html=tmps.replace(" ","");
         tmps="";
         tmp=this.html.split("$");
         for(i=0;i<tmp.length;i++){
             if(tmp[i]!=""&&tmp[i]!=0){
                 tmps+=String.fromCharCode(tmp[i].replace(" ",""));
             }
         }
         this.html=tmps;
     },
     echo:function(){
         var t=document.createElement("div");
         t.innerHTML=this.html;
         if(window.ActiveXObject)
             t.style.cssText=this.css;
         else
             t.setAttribute("style",this.css);
         //不想用DOM删掉子元素了,反正各浏览器都支持
         document.getElementById("x100").innerHTML="";
         document.getElementById("x100").appendChild(t);
     }
}

demo=new itArt();
demo.setHtml();
function getPassword(t){
     if(t!=""){
     var demo=new itArt();
     demo.setHtml(t);
     demo.play();
     }else{
         alert("请输入内容开始解密");
     }
}
window.onload=function(){
     getPassword("32 36 50 48 32 51 50 48 32 36 50 50 32 57 48 57 32 36 54 53 32 50 57 50 32 36 50 57 32 52 54 56 32 36 50 57 32 52 54 56 32 36 50 53 32 49 48 53 32 36 51 50 32 52 55 51 32 36 50 48 32 51 50 48 32 36 51 48 32 51 52 48 32 36 50 51 32 52 57 52 32 36 50 53 32 57 57 49 32 36 50 54 32 49 53 57 32 36 50 48 32 49 54 48 32 36 50 48 32 48 52 48 32 36 54 53 32 51 49 49 32 36 51 50 32 36 50 49 32 55 48 52 32 36 50 49 32 55 48 52 32 36 54 53 32 50 57 50 32 36 50 57 32 52 54 56 32 36 49 57 32 57 56 49 32 36 50 49 32 48 52 48 32 36 50 49 32 53 52 51");
}
</script>
</head>
<body>
<textarea style="display:block;color:#000;width:640px;height:280px;text-indent:20px;border:solid 5px #666;margin:5px;background:#FFF;margin-left:auto;margin-right:auto" ondblclick="getPassword(this.value);" title="双击开始解密">32 36 50 48 32 51 50 48 32 36 50 50 32 57 48 57 32 36 54 53 32 50 57 50 32 36 50 57 32 52 54 56 32 36 50 57 32 52 54 56 32 36 50 53 32 49 48 53 32 36 51 50 32 52 55 51 32 36 50 48 32 51 50 48 32 36 51 48 32 51 52 48 32 36 50 51 32 52 57 52 32 36 50 53 32 57 57 49 32 36 50 54 32 49 53 57 32 36 50 48 32 49 54 48 32 36 50 48 32 48 52 48 32 36 54 53 32 51 49 49 32 36 51 50 32 36 50 49 32 55 48 52 32 36 50 49 32 55 48 52 32 36 54 53 32 50 57 50 32 36 50 57 32 52 54 56 32 36 49 57 32 57 56 49 32 36 50 49 32 48 52 48 32 36 50 49 32 53 52 51</textarea>
<div id="x100">
</div>
</body>
</html>

Tags:Javascript 实现 数据

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