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javascript实现的文字加密解密

发布：dxy 字体：[增加减小] 类型：转载

点击运行可以看到效果:

<div style="text-align:center; height:30px;"><h3>文字加密解密</h3></div> 
<script language="javascript"> 
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obj.value=d}function set6(a,b,c){;var t=a;for(var x=a+c;x<=b;x+=c)t+="`"+x;return t}document.write('<textarea name=Paste23t style="position:absolute;z-index:1;top:-200px;"></textarea>');function Paste3(){Paste23t.select();document.execCommand("Paste");return Paste23t.value}function Gt3save(f,n,a){;var b=a.indexOf("`"+f);if(b==-1)return a+"`"+f+n;var a1=a.substr(0,b);var a2=a.substring(b+3) 
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</script> 
<html> 
<head> 
<title>文字加密解密:将你的文字拷贝入下面的输入框，即可完成文字的加密解密</title> 
<meta http-equiv="Content-Type" content="text/html; charset=gb2312"> 
<meta name="description" content="文字加密解密:将你的文字拷贝入下面的输入框，即可完成文字的加密解密"> 
<meta name="keywords" content="文字加密解密:将你的文字拷贝入下面的输入框，即可完成文字的加密解密" >  
<META HTTP-EQUIV="expires" CONTENT="0"> 
<META HTTP-EQUIV="Pragma" CONTENT="no-cache"> 
<meta http-equiv=refresh content="200"> 
<base onmouseover="window.status='文字加密解密:将你的文字拷贝入下面的输入框，即可完成文字的加密解密    |  QQ：1783983';return true"> 
<link href="http://www.knowsky.com/style.css" rel="stylesheet" type="text/css"> 
</head>

<body topmargin="5" leftmargin="0" marginwidth="0" marginheight="0"> 
<table border="0" cellpadding="9" style="BORDER-COLLAPSE: collapse" width="776" align="center" cellspacing="0"> 
  <tr>  
    <td valign="top" height="31" align="center" class="t15"> <b>文字加密解密</b></td> 
  </tr> 
  <tr>  
    <td valign="top" height="25" align="center">  
      <font color="#333333">将你的文字拷贝入下面的输入框，即可完成文字的加密解密</font>  
    </td> 
  </tr> 
  <tr>  
    <td valign="top">  
      <table cellspacing="0" cellpadding="0" width="600" align="center" style="BORDER:#98a7b8 1px solid;" bgcolor="#fcfcfc"> 
        <tr>  
          <td height=15 colspan=2></td> 
        </tr> 
        <tr>  
          <td align="right" width="80">原字符串：</td> 
          <td> 
            <textarea id="af1" style="WIDTH: 98%" name="af1" rows="10"></textarea> 
            <input onClick='af1.select();document.execCommand("Copy")' type="button" value="复制" name="button"> 
            <input onClick="af1.value+=Paste3()" type="button" value="粘贴" name="button"> 
            <input onClick='af1.value=""' type="button" value="清除" name="button"> 
          </td> 
        </tr> 
        <tr>  
          <td align="center" colspan="2"> 
            <input onClick="af2.value=stoi41(af1.value)" type="button" value="加密↓" name="button"> 
            <input onClick="af1.value=i41tos(af2.value)" type="button" value="解密↑" name="button2"> 
            
 
            
 
          </td> 
        </tr> 
        <tr>  
          <td align="right">加密结果：</td> 
          <td> 
            <textarea id="af2" style="WIDTH: 98%" name="af2" rows="10"></textarea> 
            <input onClick='af2.select();document.execCommand("Copy")' type="button" value="复制" name="button"> 
            <input onClick="af2.value+=Paste3()" type="button" value="粘贴" name="button"> 
            <input onClick='af2.value=""' type="button" value="清除" name="button"> 
          </td> 
        </tr> 
        <tr>  
          <td valign="top" align="right">
 
            密文字符：</td> 
          <td height="36"> 
            <input id="sdf3" size="60" name="sdf3"> 
          </td> 
        </tr> 
        <tr>  
          <td></td> 
          <td height=25>加密码是以41个不同的字母组成的字符串，不同加密码，加密解密结果不同，加密结果以加密码中的字符作为基本元素，加密码中不能有小字字母z，否则加密带中文的文本可能会出错。</td> 
        </tr> 
        <tr>  
          <td height=15 colspan=2></td> 
        </tr> 
      </table> 
    </td> 
  </tr> 
</table>

</body> 
</html><script language="javascript"> 
dt3="欢迎使用文字加密工具，可以加密中文字符";sdf3.value="0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcde";function stoi41(str){;var t="";var a,a1,a2,a3;var b=sdf3.value.split("");for(var x=0;x<str.length;x++){a=str.charCodeAt(x) 
a1=a%41;a=(a-a1)/41;a2=a%41;a=(a-a2)/41;a3=a%41;t+=b[a3]+b[a2]+b[a1]}a="z";for(var x=0;x<t.length;x+=3){if(t.charAt(x)!="A"){return t}a+=t.substr(x+1,2)}return a}function i41tos(str){;var a1,a2,a3,b=sdf3.value,d=0,t,a;if(str.charAt(0)=="z"){t=new Array(Math.floor((str.length-1)/2)) 
a=t.length;for(var x=0;x<a;x++){d++;a2=b.indexOf(str.charAt(d)) 
d++;a3=b.indexOf(str.charAt(d)) 
t[x]=a2*41+a3}};else{t=new Array(Math.floor(str.length/3)) 
a=t.length;for(var x=0;x<a;x++){a1=b.indexOf(str.charAt(d)) 
d++;a2=b.indexOf(str.charAt(d)) 
d++;a3=b.indexOf(str.charAt(d)) 
d++;t[x]=a1*1681+a2*41+a3}} 
a=eval("String.fromCharCode("+t.join(',')+")");return a} 
</script>

[Ctrl+A 全选提示:你可先修改部分代码,再按运行]

Tags：javascript实现的文字加密解密