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  • 脚本加密与解密

    此代码可以进行Encode加解密,比如下面这样的asp代码:


    <html>
    <head>
    <title>98062--脚本天地</title>
    <meta http-equiv="Content-Type" content="text/html; charset=gb2312">
    <meta name="author" content="netasp;EMAIL:netasp@sohu.com">
    <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 = "
    <>@"
    
    		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>
    </head>
    <body>
    <div class="div">
    <span class="title">脚本加密与解密</span>
    <FORM METHOD="post">
    <textarea name="codeinput" cols="100" rows="10" style="100%;height:400px;"></textarea><br><br>
    <input type="button" value="Encode加密" onClick="this.form.codeinput.value=screncode(this.form.codeinput.value,'JS')"> <input type="button" value="Encode解密" onClick="this.form.codeinput.value=strdec(this.form.codeinput.value)"> <br>
    <p style="100%;padding:0 40px;text-align:left">说明:加密时应只加密脚本部分,不加密脚本标记<script language="javascript">,并且加密后脚本标记应改为:<script language="JScript.Encode"></p>
    </form>
    </body>
    </html>
    


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  • 原文地址:https://www.cnblogs.com/apollokk/p/6713839.html
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