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Public Function StringEnDeCodecn(strSource As String, MA) As String
On Error GoTo ErrEnDeCode
  Dim X As Single, CHARNUM As Long, RANDOMINTEGER As Integer, SINGLECHAR As String * 1
  Dim strTmp As String
  If MA < 0 Then MA = MA * (-1)
  X = Rnd(-MA)
  For i = 1 To Len(strSource) Step 1 'È¡µ¥×Ö½ÚÄÚÈÝ
  SINGLECHAR = Mid(strSource, i, 1)
  CHARNUM = Asc(SINGLECHAR)
g: RANDOMINTEGER = Int(127 * Rnd)
  If RANDOMINTEGER < 30 Or RANDOMINTEGER > 100 Then GoTo g
  CHARNUM = CHARNUM Xor RANDOMINTEGER
  strTmp = strTmp & Chr(CHARNUM)
  Next i
  StringEnDeCodecn = strTmp
  Exit Function
ErrEnDeCode:
  StringEnDeCodecn = ""
  MsgBox "´íÎó·¢Éú£º" & Err.Number & "\" & Err.Description
End Function


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Private Sub Command1_Click()
tmp = StringEnDeCodecn(Text1.Text, 75)
Text1.Text = tmp
End Sub

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