這里提供了vbscript的加密vbscript encode后 的解密函數(shù)，通過javascript實現(xiàn)：

在線解密：vbscript.encode 解密函數(shù)

<SCRIPT language=JScript>

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 = "\r\n<>@"

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>

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