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在 Excel 中恢复工作表保护密码

tag-icon • tag-icon microsoft-excel vba password-recovery
在 Excel 中恢复工作表保护密码

我有一个 Excel 工作簿。

两年前我为其中一个工作表设置了密码保护选项。现在我忘记了密码。有什么方法可以恢复该 Excel 工作表的密码吗？

答案1

您无法恢复密码，但您可以取消保护工作表（用于保护工作表的哈希在旧版本的 Excel 中很容易发生冲突，因此在这里产生冲突非常快）。

有一些脚本可以在很短的时间内强行打开您的工作表。

例如，请看这里： http://www.theofficeexperts.com/VBASamples/Excel02.htm

代码如下：

Sub PasswordBreaker()
  'Author unknown but submitted by brettdj of www.experts-exchange.com

  Dim i As Integer, j As Integer, k As Integer
  Dim l As Integer, m As Integer, n As Integer
  Dim i1 As Integer, i2 As Integer, i3 As Integer
  Dim i4 As Integer, i5 As Integer, i6 As Integer
  On Error Resume Next
  For i = 65 To 66: For j = 65 To 66: For k = 65 To 66
  For l = 65 To 66: For m = 65 To 66: For i1 = 65 To 66
  For i2 = 65 To 66: For i3 = 65 To 66: For i4 = 65 To 66
  For i5 = 65 To 66: For i6 = 65 To 66: For n = 32 To 126


 ActiveSheet.Unprotect Chr(i) & Chr(j) & Chr(k) & _
      Chr(l) & Chr(m) & Chr(i1) & Chr(i2) & Chr(i3) & _
      Chr(i4) & Chr(i5) & Chr(i6) & Chr(n)
  If ActiveSheet.ProtectContents = False Then
      MsgBox "One usable password is " & Chr(i) & Chr(j) & _
          Chr(k) & Chr(l) & Chr(m) & Chr(i1) & Chr(i2) & _
          Chr(i3) & Chr(i4) & Chr(i5) & Chr(i6) & Chr(n)
   ActiveWorkbook.Sheets(1).Select
   Range("a1").FormulaR1C1 = Chr(i) & Chr(j) & _
          Chr(k) & Chr(l) & Chr(m) & Chr(i1) & Chr(i2) & _
          Chr(i3) & Chr(i4) & Chr(i5) & Chr(i6) & Chr(n)
       Exit Sub
  End If
  Next: Next: Next: Next: Next: Next
  Next: Next: Next: Next: Next: Next


End Sub

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