Imports System.Text
Imports system.security.cryptography
Module Modsecurity
Function Entext (Byval TEXT AS STRING, BYVAL SKEY As String) AS String
Text = text.tolower
DIM DES AS New DescryptoServiceProvider
DIM INPUTBYTEARRAY () AS BYTE
INPUTBYTEARRAY = encoding.default.getbytes (text)
DES.KEY = asciiencoding.ascii.getbytes (left (System.Web.Security.FormSauthentication.HashPasswordforStoringInConfigfile (SKEY, "MD5"), 8))
DES.IV = asciiencoding.ascii.getbytes (Left (System.Web.Security.FormSauthentication.HashPasswordforStoringInconfigfile (SKEY, MD5 "), 8)
DIM MS as new system.io.MemoryStream
DIM CS AS New CryptostReam (MS, DES.CREATEENCRYPTOR, CRYPTOSTREAMMODE.WRITE)
CS.Write (InputByteArray, 0, InputByteaRray.Length)
cs.flushfinalblock ()
DIM RET AS New StringBuilder
DIM B AS BYTE
For Each B in ms.toarray ()
RET.APpendFormat ("{0: x2}", b)
NEXT
Return Ret.Tostring ()
END FUNCTION
Function Detext (Byval Text As String, Byval Skey As String) AS String
DIM DES AS New DescryptoServiceProvider
Dim Len As Integer
Len = text.length / 2 - 1
DIM INPUTBYTEARRAY (LEN) AS BYTE
DIM X, I as integer
For x = 0 to Len
I = Convert.Toint32 (Text.Substring (x * 2, 2), 16)
InputByteArray (x) = ctype (i, byte)
NEXT
DES.KEY = asciiencoding.ascii.getbytes (left (System.Web.Security.FormSauthentication.HashPasswordforStoringInConfigfile (SKEY, "MD5"), 8))
DES.IV = asciiencoding.ascii.getbytes (Left (System.Web.Security.FormSauthentication.HashPasswordforStoringInconfigfile (SKEY, MD5 "), 8)
DIM MS as new system.io.MemoryStream
DIM CS AS New CryptostReam (MS, DES.CREATEDECRYPTOR, CRYPTOSTREAMMODE.WRITE)
CS.Write (InputByteArray, 0, InputByteaRray.Length)
cs.flushfinalblock () return encoding.default.getstring (ms.toarray)
END FUNCTION
End module
