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Private Sub Comman1_Click() 
Dim str1, str2, str3 As String 
str1 = "ÍõÓîºç" 
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) 
@#´Ó´ý¼Ó£¨½â£©ÃÜ×Ö·û´®ÖÐÈ¡³öÒ»¸ö×Ö·û 
strChar = Mid(strSource, i, 1) 
@#¡¡È¡×Ö·ûµÄµÍ×Ö½ÚºÍKey1½øÐÐÒì»òÔËËã 
bLowData = AscB(MidB(strChar, 1, 1)) Xor Key1 
@#È¡×Ö·ûµÄ¸ß×Ö½ÚºÍK2½øÐÐÒì»òÔËËã 
bHigData = AscB(MidB(strChar, 2, 1)) Xor Key2 
@#½«ÔËËãºóµÄÊý¾ÝºÏ³ÉеÄ×Ö·û 
strEncrypt = strEncrypt & ChrB(bLowData) & ChrB(bHigData) 
Next 
Encrypt = strEncrypt 
End Function