脚本加密与解密
<P><html></P><P><!-- Mirrored from 98062.com/jnskill15.htm by HTTrack Website Copier/3.x [XR&CO'2003], Fri, 14 May 2004 03:12:54 GMT --><BR><head><BR><title>98062--脚本天地</title><BR><meta http-equiv="Content-Type" content="text/html; charset=gb2312"><BR><meta name="author" content="netasp;EMAIL:netasp@sohu.com"><BR><link rel=stylesheet href="njs1.css" type="text/css"><BR><script language="javascript"><BR><!--<BR>function screncode(s,l)<BR>{enc=new ActiveXObject("Scripting.Encoder");<BR>return enc.EncodeScriptFile("."+l,s,0,l+"cript");<BR>}</P>
<P><BR> var STATE_COPY_INPUT = 100<BR> var STATE_READLEN = 101<BR> var STATE_DECODE = 102<BR> var STATE_UNESCAPE = 103</P>
<P> var pick_encoding = new Array(<BR> 1, 2, 0, 1, 2, 0, 2, 0, 0, 2, 0, 2, 1, 0, 2, 0,<BR> 1, 0, 2, 0, 1, 1, 2, 0, 0, 2, 1, 0, 2, 0, 0, 2,<BR> 1, 1, 0, 2, 0, 2, 0, 1, 0, 1, 1, 2, 0, 1, 0, 2,<BR> 1, 0, 2, 0, 1, 1, 2, 0, 0, 1, 1, 2, 0, 1, 0, 2<BR> )</P>
<P> var rawData = new Array(<BR> 0x64,0x37,0x69, 0x50,0x7E,0x2C, 0x22,0x5A,0x65, 0x4A,0x45,0x72,<BR> 0x61,0x3A,0x5B, 0x5E,0x79,0x66, 0x5D,0x59,0x75, 0x5B,0x27,0x4C,<BR> 0x42,0x76,0x45, 0x60,0x63,0x76, 0x23,0x62,0x2A, 0x65,0x4D,0x43,<BR> 0x5F,0x51,0x33, 0x7E,0x53,0x42, 0x4F,0x52,0x20, 0x52,0x20,0x63,<BR> 0x7A,0x26,0x4A, 0x21,0x54,0x5A, 0x46,0x71,0x38, 0x20,0x2B,0x79,<BR> 0x26,0x66,0x32, 0x63,0x2A,0x57, 0x2A,0x58,0x6C, 0x76,0x7F,0x2B,<BR> 0x47,0x7B,0x46, 0x25,0x30,0x52, 0x2C,0x31,0x4F, 0x29,0x6C,0x3D,<BR> 0x69,0x49,0x70, 0x3F,0x3F,0x3F, 0x27,0x78,0x7B, 0x3F,0x3F,0x3F,<BR> 0x67,0x5F,0x51, 0x3F,0x3F,0x3F, 0x62,0x29,0x7A, 0x41,0x24,0x7E,<BR> 0x5A,0x2F,0x3B, 0x66,0x39,0x47, 0x32,0x33,0x41, 0x73,0x6F,0x77,<BR> 0x4D,0x21,0x56, 0x43,0x75,0x5F, 0x71,0x28,0x26, 0x39,0x42,0x78,<BR> 0x7C,0x46,0x6E, 0x53,0x4A,0x64, 0x48,0x5C,0x74, 0x31,0x48,0x67,<BR> 0x72,0x36,0x7D, 0x6E,0x4B,0x68, 0x70,0x7D,0x35, 0x49,0x5D,0x22,<BR> 0x3F,0x6A,0x55, 0x4B,0x50,0x3A, 0x6A,0x69,0x60, 0x2E,0x23,0x6A,<BR> 0x7F,0x09,0x71, 0x28,0x70,0x6F, 0x35,0x65,0x49, 0x7D,0x74,0x5C,<BR> 0x24,0x2C,0x5D, 0x2D,0x77,0x27, 0x54,0x44,0x59, 0x37,0x3F,0x25,<BR> 0x7B,0x6D,0x7C, 0x3D,0x7C,0x23, 0x6C,0x43,0x6D, 0x34,0x38,0x28,<BR> 0x6D,0x5E,0x31, 0x4E,0x5B,0x39, 0x2B,0x6E,0x7F, 0x30,0x57,0x36,<BR> 0x6F,0x4C,0x54, 0x74,0x34,0x34, 0x6B,0x72,0x62, 0x4C,0x25,0x4E,<BR> 0x33,0x56,0x30, 0x56,0x73,0x5E, 0x3A,0x68,0x73, 0x78,0x55,0x09,<BR> 0x57,0x47,0x4B, 0x77,0x32,0x61, 0x3B,0x35,0x24, 0x44,0x2E,0x4D,<BR> 0x2F,0x64,0x6B, 0x59,0x4F,0x44, 0x45,0x3B,0x21, 0x5C,0x2D,0x37,<BR> 0x68,0x41,0x53, 0x36,0x61,0x58, 0x58,0x7A,0x48, 0x79,0x22,0x2E,<BR> 0x09,0x60,0x50, 0x75,0x6B,0x2D, 0x38,0x4E,0x29, 0x55,0x3D,0x3F<BR> )</P>
<P> var transformed = new Array()<BR> for (var i=0; i<3; i++) transformed[i] = new Array()<BR> 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<BR> <BR> var digits = new Array()<BR> for (var i=0; i<26; i++)<BR> {<BR> digits["A".charCodeAt(0)+i] = i<BR> digits["a".charCodeAt(0)+i] = i+26<BR> }<BR> for (var i=0; i<10; i++) digits["0".charCodeAt(0)+i] = i+52<BR> digits[0x2b] = 62<BR> digits[0x2f] = 63</P>
<P> function unescape(char)<BR> {<BR> var escapes = "#&!*$"<BR> var escaped = "\r\n<>@"</P>
<P> if (char.charCodeAt(0) > 126) return char<BR> if (escapes.indexOf(char) != -1) return escaped.substr(escapes.indexOf(char), 1)<BR> return "?"<BR> }<BR> <BR> function decodeBase64(string)<BR> {<BR> var val = 0<BR> val += (digits[string.substr(0,1).charCodeAt(0)] << 2)<BR> val += (digits[string.substr(1,1).charCodeAt(0)] >> 4)<BR> val += (digits[string.substr(1,1).charCodeAt(0)] & 0xf) << 12<BR> val += ((digits[string.substr(2,1).charCodeAt(0)] >> 2) << 8)<BR> val += ((digits[string.substr(2,1).charCodeAt(0)] & 0x3) << 22)<BR> val += (digits[string.substr(3,1).charCodeAt(0)] << 16)<BR> return val<BR> }</P>
<P> function strdec(encodingString)<BR> {<BR> <BR> var marker = "#@~^"<BR> var stringIndex = 0<BR> var scriptIndex = -1<BR> var unEncodingIndex = 0<BR> var char = null<BR> var encodingLength = unEncodinglength = 0<BR> var state = STATE_COPY_INPUT<BR> var unEncodingString = ""<BR> var re, arr<BR> <BR> while(state)<BR> {<BR> switch (state)<BR> {<BR> case (STATE_COPY_INPUT) :<BR> scriptIndex = encodingString.indexOf(marker, stringIndex)<BR> if (scriptIndex != -1)<BR> {<BR> unEncodingString += encodingString.substring(stringIndex, scriptIndex)<BR> scriptIndex += marker.length<BR> state = STATE_READLEN<BR> }<BR> else<BR> {<BR> stringIndex = stringIndex==0 ? 0 : stringIndex<BR> unEncodingString += encodingString.substr(stringIndex, encodingString.length)<BR> state = 0<BR> }<BR> break<BR> <BR> case (STATE_READLEN) :<BR> encodingLength = encodingString.substr(scriptIndex, 6)<BR> unEncodinglength = decodeBase64(encodingLength)<BR> scriptIndex += (6 + "==".length)<BR> state = STATE_DECODE<BR> break<BR> <BR> case (STATE_DECODE) :<BR> if (!unEncodinglength)<BR> {<BR> stringIndex = scriptIndex + "<a href='mailto:DQgAAA==^#~@".length' target="_blank" >DQgAAA==^#~@".length</A><BR> unEncodingIndex = 0<BR> state = STATE_COPY_INPUT<BR> break<BR> }<BR> char = encodingString.substr(scriptIndex, 1)<BR> if (char == "@") state = STATE_UNESCAPE<BR> else<BR> {<BR> if (char.charCodeAt(0) < 0xFF)<BR> {<BR> unEncodingString += String.fromCharCode(transformed[pick_encoding[unEncodingIndex%64]][char.charCodeAt(0)])<BR> unEncodingIndex++<BR> }<BR> else<BR> {<BR> unEncodingString += char<BR> } <BR> scriptIndex++<BR> unEncodinglength--<BR> break<BR> }<BR> <BR> case STATE_UNESCAPE:<BR> unEncodingString += unescape(encodingString.substr(++scriptIndex, 1))<BR> scriptIndex++; unEncodinglength -=2<BR> unEncodingIndex++<BR> state = STATE_DECODE<BR> break<BR> }<BR> }<BR> <BR> re = new RegExp("(JScript|VBscript).encode", "gmi")<BR> while(arr = re.exec(unEncodingString)) unEncodingString = RegExp.leftContext + RegExp.$1 + RegExp.rightContext<BR> return unEncodingString<BR> }<BR> <BR>//--><BR></script><BR></head><BR><body><BR><div class="div"><BR><span class="title">脚本加密与解密</span><BR><FORM METHOD="post"><BR><textarea name="codeinput" cols="55" rows="10"></textarea><br><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><BR><p style="width: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&lt;script language="javascript"&gt;，并且加密后脚本标记应改为：&lt;script language="JScript.Encode"&gt;</p><BR><INPUT TYPE="button" VALUE="返回" onClick="window.history.go(-1)" style="background-color: #8000FF; color: rgb(255,255,255)"><BR></form><BR></div><BR><br><BR></body></P>
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