VBA特殊加密

'移除VBA密码保护
Sub 移除VBA密码保护()
  Dim FileName As String
  FileName =
Application.GetOpenFilename("Excel文件（*.xls & *.xla）,*.xls;*.xla", ,
"VBA破解")
  If FileName = CStr(False) Then
     Exit Sub
  Else
    
VBAPassword FileName, False
  End If
End Sub

'设置VBA密码保护
Sub 设置VBA密码保护()
  Dim FileName As String
  FileName =
Application.GetOpenFilename("Excel文件（*.xls & *.xla）,*.xls;*.xla", ,
"VBA破解")
  If FileName = CStr(False) Then
     Exit Sub
  Else
    
VBAPassword FileName, True
  End If
End Sub

Private Function VBAPassword(FileName As String, Optional Protect As Boolean
= False)
    If Dir(FileName) = "" Then
       Exit Function
   
Else
       FileCopy FileName, FileName & ".bak"
    End If

    Dim GetData As String * 5
    Open FileName For Binary As #1
   
Dim CMGs As Long
    Dim DPBo As Long
    For i = 1 To LOF(1)
       
Get #1, i, GetData
        If GetData = "CMG=""" Then CMGs = i
        If
GetData = "[Host" Then DPBo = i - 2: Exit For
    Next
    
    If
CMGs = 0 Then
       MsgBox "请先对VBA编码设置一个保护密码...", 32, "提示"
       Exit
Function
    End If
    
    If Protect = False Then
       Dim St
As String * 2
       Dim s20 As String * 1
       
      
'取得一个0D0A十六进制字串
       Get #1, CMGs - 2, St
    
      
'取得一个20十六制字串
       Get #1, DPBo + 16, s20
    
      
'替换加密部份机码
       For i = CMGs To DPBo Step 2
           Put #1, i,
St
       Next
       
       '加入不配对符号
       If (DPBo - CMGs) Mod
2 <> 0 Then
          Put #1, DPBo + 1, s20
       End If
      
MsgBox "文件解密成功......", 32, "提示"
    Else
       Dim MMs As String *
5
       MMs = "DPB="""
       Put #1, CMGs, MMs
       MsgBox
"对文件特殊加密成功......", 32, "提示"
    End If
    Close #1
End Function