asp字串加密解密函數

<%
A_Key=split("96,44,63,80",",") '定義密鑰
'*********加密的過程*********
Function EnCrypt(m)
Dim strChar,iKeyChar,iStringChar,I
k=0
for I = 1 to Len(m)
iKeyChar =Cint(A_Key(k))
iStringChar = Asc(mid(m,I,1)) '擷取字元的ASCII碼值
iCryptChar = iKeyChar Xor iStringChar '進行異或運算
'對密鑰進行移位元運算
If k<3 Then
k=k+1
Else
k=0
End If
c = c & Chr(iCryptChar)
next
EnCrypt = c
End Function
'*********解密的過程*********
Function DeCrypt(c)
Dim strChar, iKeyChar, iStringChar, I
k=0
for I = 1 to Len(c)
iKeyChar =Cint(A_Key(k))
iStringChar = Asc(mid(c,I,1))
iDeCryptChar = iKeyChar Xor iStringChar '進行異或運算
'對密鑰進行移位元運算
If k<3 Then
k=k+1
Else
k=0
End If
strDecrypted = strDecrypted & Chr(iDeCryptChar)
next
DeCrypt = strDecrypted
End Function
%>