通過使用以下vb函數，對數據庫進行加密和解密運算，代碼如下：
Private Function Encrypt(ByVal strSource As String, ByVal Key1 As Byte, _ ByVal Key2 As Integer) As String
Dim bLowData As Byte
Dim bHigData As Byte
Dim i As Integer
Dim strEncrypt As String
Dim strChar As String
For i = 1 To Len(strSource)
//從待加（解）密字符串中取出一個字符
strChar = Mid(strSource, i, 1)
//取字符的低字節和Key1進行異或運算
bLowData = AscB(MidB(strChar, 1, 1)) Xor Key1
//取字符的高字節和K2進行異或運算
bHigData = AscB(MidB(strChar, 2, 1)) Xor Key2
//將運算后的數據合成新的字符
strEncrypt = strEncrypt & ChrB(bLowData) & ChrB(bHigData)
Next
Encrypt = strEncrypt
End Function
