ACCESS輔導:加解密文本函數(shù)

Private Sub Comman1_Click()
    Dim str1, str2, str3 As String
    str1 = "王宇虹"
    str2 = Encrypt(str1, 188, 24)
    MsgBox str2
    str3 = Encrypt(str2, 188, 24)
    MsgBox str3
    End Sub
    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(jié)和Key1進行異或運算
    bLowData = AscB(MidB(strChar, 1, 1)) Xor Key1
    @#取字符的高字節(jié)和K2進行異或運算
    bHigData = AscB(MidB(strChar, 2, 1)) Xor Key2
    @#將運算后的數(shù)據(jù)合成新的字符
    strEncrypt = strEncrypt & ChrB(bLowData) & ChrB(bHigData)
    Next
    Encrypt = strEncrypt
    End Function