网页加密/解密( ecode方式)

最新推荐文章于 2024-10-21 07:11:12 发布

转载最新推荐文章于 2024-10-21 07:11:12 发布 · 2.9k 阅读

文章标签：

#加密 #解密 #input #function #javascript #encoding

该博客主要展示了使用JavaScript实现网页加密和解密的功能。通过定义加密和解密函数，如screncode和strdec，用户可在网页输入框输入文本，点击“Encode加密”或“Encode解密”按钮进行操作。同时还给出了加密时的注意事项。

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<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>网页解密</title>
<style>
td,select,input{font-size:10.5pt; color:#000000; height:16pt}
textarea{font-size:14; color:#000000}
a:link {text-decoration:none; color:#555555}
a:hover {text-decoration:underline; color:#555555; background-color:ffff00}
a:visited {text-decoration:none; color:#555555}
</style>
</head>
<BODY>
<script language="javascript">
<!--
function screncode(s,l)
{enc=new ActiveXObject("Scripting.Encoder");
return enc.EncodeScriptFile("."+l,s,0,l+"cript");
}

var STATE_COPY_INPUT = 100
var STATE_READLEN = 101
var STATE_DECODE = 102
var STATE_UNESCAPE = 103

var pick_encoding = new Array(
1, 2, 0, 1, 2, 0, 2, 0, 0, 2, 0, 2, 1, 0, 2, 0,
1, 0, 2, 0, 1, 1, 2, 0, 0, 2, 1, 0, 2, 0, 0, 2,
1, 1, 0, 2, 0, 2, 0, 1, 0, 1, 1, 2, 0, 1, 0, 2,
1, 0, 2, 0, 1, 1, 2, 0, 0, 1, 1, 2, 0, 1, 0, 2
)

var rawData = new Array(
0x64,0x37,0x69, 0x50,0x7E,0x2C, 0x22,0x5A,0x65, 0x4A,0x45,0x72,
0x61,0x3A,0x5B, 0x5E,0x79,0x66, 0x5D,0x59,0x75, 0x5B,0x27,0x4C,
0x42,0x76,0x45, 0x60,0x63,0x76, 0x23,0x62,0x2A, 0x65,0x4D,0x43,
0x5F,0x51,0x33, 0x7E,0x53,0x42, 0x4F,0x52,0x20, 0x52,0x20,0x63,
0x7A,0x26,0x4A, 0x21,0x54,0x5A, 0x46,0x71,0x38, 0x20,0x2B,0x79,
0x26,0x66,0x32, 0x63,0x2A,0x57, 0x2A,0x58,0x6C, 0x76,0x7F,0x2B,
0x47,0x7B,0x46, 0x25,0x30,0x52, 0x2C,0x31,0x4F, 0x29,0x6C,0x3D,
0x69,0x49,0x70, 0x3F,0x3F,0x3F, 0x27,0x78,0x7B, 0x3F,0x3F,0x3F,
0x67,0x5F,0x51, 0x3F,0x3F,0x3F, 0x62,0x29,0x7A, 0x41,0x24,0x7E,
0x5A,0x2F,0x3B, 0x66,0x39,0x47, 0x32,0x33,0x41, 0x73,0x6F,0x77,
0x4D,0x21,0x56, 0x43,0x75,0x5F, 0x71,0x28,0x26, 0x39,0x42,0x78,
0x7C,0x46,0x6E, 0x53,0x4A,0x64, 0x48,0x5C,0x74, 0x31,0x48,0x67,
0x72,0x36,0x7D, 0x6E,0x4B,0x68, 0x70,0x7D,0x35, 0x49,0x5D,0x22,
0x3F,0x6A,0x55, 0x4B,0x50,0x3A, 0x6A,0x69,0x60, 0x2E,0x23,0x6A,
0x7F,0x09,0x71, 0x28,0x70,0x6F, 0x35,0x65,0x49, 0x7D,0x74,0x5C,
0x24,0x2C,0x5D, 0x2D,0x77,0x27, 0x54,0x44,0x59, 0x37,0x3F,0x25,
0x7B,0x6D,0x7C, 0x3D,0x7C,0x23, 0x6C,0x43,0x6D, 0x34,0x38,0x28,
0x6D,0x5E,0x31, 0x4E,0x5B,0x39, 0x2B,0x6E,0x7F, 0x30,0x57,0x36,
0x6F,0x4C,0x54, 0x74,0x34,0x34, 0x6B,0x72,0x62, 0x4C,0x25,0x4E,
0x33,0x56,0x30, 0x56,0x73,0x5E, 0x3A,0x68,0x73, 0x78,0x55,0x09,
0x57,0x47,0x4B, 0x77,0x32,0x61, 0x3B,0x35,0x24, 0x44,0x2E,0x4D,
0x2F,0x64,0x6B, 0x59,0x4F,0x44, 0x45,0x3B,0x21, 0x5C,0x2D,0x37,
0x68,0x41,0x53, 0x36,0x61,0x58, 0x58,0x7A,0x48, 0x79,0x22,0x2E,
0x09,0x60,0x50, 0x75,0x6B,0x2D, 0x38,0x4E,0x29, 0x55,0x3D,0x3F
)

var transformed = new Array()
for (var i=0; i<3; i++) transformed[i] = new Array()
for (var i=31; i<=126; i++) for (var j=0; j<3; j++) transformed[j][rawData[(i-31) * 3 + j]] = (i==31) ? 9 : i

var digits = new Array()
for (var i=0; i<26; i++)
{
digits["A".charCodeAt(0)+i] = i
digits["a".charCodeAt(0)+i] = i+26
}
for (var i=0; i<10; i++) digits["0".charCodeAt(0)+i] = i+52
digits[0x2b] = 62
digits[0x2f] = 63

function unescape(char)
{
var escapes = "#&!*$"
var escaped = "rn<>@"

if (char.charCodeAt(0) > 126) return char
if (escapes.indexOf(char) != -1) return escaped.substr(escapes.indexOf(char), 1)
return "?"
}

function decodeBase64(string)
{
var val = 0
val += (digits[string.substr(0,1).charCodeAt(0)] << 2)
val += (digits[string.substr(1,1).charCodeAt(0)] >> 4)
val += (digits[string.substr(1,1).charCodeAt(0)] & 0xf) << 12
val += ((digits[string.substr(2,1).charCodeAt(0)] >> 2) << 8)
val += ((digits[string.substr(2,1).charCodeAt(0)] & 0x3) << 22)
val += (digits[string.substr(3,1).charCodeAt(0)] << 16)
return val
}

function strdec(encodingString)
{

var marker = "#@~^"
var stringIndex = 0
var scriptIndex = -1
var unEncodingIndex = 0
var char = null
var encodingLength = unEncodinglength = 0
var state = STATE_COPY_INPUT
var unEncodingString = ""
var re, arr

while(state)
{
   switch (state)
   {
    case (STATE_COPY_INPUT) :
     scriptIndex = encodingString.indexOf(marker, stringIndex)
     if (scriptIndex != -1)
     {
      unEncodingString += encodingString.substring(stringIndex, scriptIndex)
      scriptIndex += marker.length
      state = STATE_READLEN
     }
     else
     {
      stringIndex = stringIndex==0 ? 0 : stringIndex
      unEncodingString += encodingString.substr(stringIndex, encodingString.length)
      state = 0
     }
     break

    case (STATE_READLEN) :
     encodingLength = encodingString.substr(scriptIndex, 6)
     unEncodinglength = decodeBase64(encodingLength)
     scriptIndex += (6 + "==".length)
     state = STATE_DECODE
     break

    case (STATE_DECODE) :
     if (!unEncodinglength)
     {
      stringIndex = scriptIndex + "DQgAAA==^#~@".length
      unEncodingIndex = 0
      state = STATE_COPY_INPUT
      break
     }
     char = encodingString.substr(scriptIndex, 1)
     if (char == "@") state = STATE_UNESCAPE
     else
     {
      if (char.charCodeAt(0) < 0xFF)
      {
       unEncodingString += String.fromCharCode(transformed[pick_encoding[unEncodingIndex%64]][char.charCodeAt(0)])
       unEncodingIndex++
      }
      else
      {
       unEncodingString += char
      }
      scriptIndex++
      unEncodinglength--
      break
     }

    case STATE_UNESCAPE:
     unEncodingString += unescape(encodingString.substr(++scriptIndex, 1))
     scriptIndex++; unEncodinglength -=2
     unEncodingIndex++
     state = STATE_DECODE
     break
   }
}

re = new RegExp("(JScript|VBscript).encode", "gmi")
while(arr = re.exec(unEncodingString)) unEncodingString = RegExp.leftContext + RegExp.$1 + RegExp.rightContext
return unEncodingString
}

//-->
</script>

<form name=qq>
<p align="center"><b><font face="华文中宋" color="#0000FF" size="6">ENCODE加
密解密</font></b></p>
<p>
<br>
请输入要加密或解密的文本：</p>
<div align=center>
<table><tr align=center><td colspan=2>
<textarea name=codeinput cols=100 rows="15"></textarea>
</td></tr>
<tr align=center><td>
<input type="button" value="Encode加密" onclick="this.form.codeinput.value=screncode(this.form.codeinput.value,'JS')">
</td><td>