某EXCEL...

Public Sub AllInternalPasswords()
' Breaks worksheet and workbook structure passwords. Bob McCormick
' probably originator of base code algorithm modified for coverage
' of workbook structure / windows passwords and for multiple passwords
'
' Norman Harker and JE McGimpsey 27-Dec-2002 (Version 1.1)
' Modified 2003-Apr-04 by JEM: All msgs to constants, and
' eliminate one Exit Sub (Version 1.1.1)
' Reveals hashed passwords NOT original passwords
Const DBLSPACE As String = vbNewLine & vbNewLine
Const AUTHORS As String = DBLSPACE & vbNewLine & _
"Adapted from Bob McCormick base code by" & _
"Norman Harker and JE McGimpsey"
Const HEADER As String = "AllInternalPasswords User Message"
Const VERSION As String = DBLSPACE & "Version 1.1.1 2003-Apr-04"
Const REPBACK As String = DBLSPACE & "Please report failure " & _
"to the microsoft.public.excel.programming newsgroup."
Const ALLCLEAR As String = DBLSPACE & "The workbook should " & _
"now be free of all password protection, so make sure you:" & _
DBLSPACE & "SAVE IT NOW!" & DBLSPACE & "and also" & _
DBLSPACE & "BACKUP!, BACKUP!!, BACKUP!!!" & _
DBLSPACE & "Also, remember that the password was " & _
"put there for a reason. Don't stuff up crucial formulas " & _
"or data." & DBLSPACE & "Access and use of some data " & _
"may be an offense. If in doubt, don't."
Const MSGNOPWORDS1 As String = "There were no passwords on " & _
"sheets, or workbook structure or windows." & AUTHORS & VERSION
Const MSGNOPWORDS2 As String = "There was no protection to " & _
"workbook structure or windows." & DBLSPACE & _
"Proceeding to unprotect sheets." & AUTHORS & VERSION
Const MSGTAKETIME As String = "After pressing OK button this " & _
"will take some time." & DBLSPACE & "Amount of time " & _
"depends on how many different passwords, the " & _
"passwords, and your computer's specification." & DBLSPACE & _
"Just be patient! Make me a coffee!" & AUTHORS & VERSION
Const MSGPWORDFOUND1 As String = "You had a Worksheet " & _
"Structure or Windows Password set." & DBLSPACE & _
"The password found was: " & DBLSPACE & "$$" & DBLSPACE & _
"Note it down for potential future use in other workbooks by " & _
"the same person who set this password." & DBLSPACE & _
"Now to check and clear other passwords." & AUTHORS & VERSION
Const MSGPWORDFOUND2 As String = "You had a Worksheet " & _
"password set." & DBLSPACE & "The password found was: " & _
DBLSPACE & "$$" & DBLSPACE & "Note it down for potential " & _
"future use in other workbooks by same person who " & _
"set this password." & DBLSPACE & "Now to check and clear " & _
"other passwords." & AUTHORS & VERSION
Const MSGONLYONE As String = "Only structure / windows " & _
"protected with the password that was just found." & _
ALLCLEAR & AUTHORS & VERSION & REPBACK
Dim w1 As Worksheet, w2 As Worksheet
Dim i As Integer, j As Integer, k As Integer, l As Integer
Dim m As Integer, n As Integer, i1 As Integer, i2 As Integer
Dim i3 As Integer, i4 As Integer, i5 As Integer, i6 As Integer
Dim PWord1 As String
Dim ShTag As Boolean, WinTag As Boolean

Application.ScreenUpdating = False
With ActiveWorkbook
    WinTag = .ProtectStructure Or .ProtectWindows
End With
ShTag = False
For Each w1 In Worksheets
    ShTag = ShTag Or w1.ProtectContents
Next w1
If Not ShTag And Not WinTag Then
    MsgBox MSGNOPWORDS1, vbInformation, HEADER
    Exit Sub
End If
MsgBox MSGTAKETIME, vbInformation, HEADER
If Not WinTag Then
    MsgBox MSGNOPWORDS2, vbInformation, HEADER
Else
    On Error Resume Next
    Do 'dummy do loop
        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
            With ActiveWorkbook
                .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 .ProtectStructure = False And _
                    .ProtectWindows = False Then
                    PWord1 = Chr(i) & Chr(j) & Chr(k) & Chr(l) & _
                        Chr(m) & Chr(i1) & Chr(i2) & Chr(i3) & _
                        Chr(i4) & Chr(i5) & Chr(i6) & Chr(n)
                        MsgBox Application.Substitute(MSGPWORDFOUND1, _
                                "$$", PWord1), vbInformation, HEADER
                        Exit Do 'Bypass all for...nexts
                End If
            End With
        Next: Next: Next: Next: Next: Next
        Next: Next: Next: Next: Next: Next
    Loop Until True
    On Error GoTo 0
End If
If WinTag And Not ShTag Then
    MsgBox MSGONLYONE, vbInformation, HEADER
    Exit Sub
End If
On Error Resume Next
For Each w1 In Worksheets
'Attempt clearance with PWord1
    w1.Unprotect PWord1
Next w1
On Error GoTo 0
ShTag = False
For Each w1 In Worksheets
'Checks for all clear ShTag triggered to 1 if not.
    ShTag = ShTag Or w1.ProtectContents
Next w1
If ShTag Then
    For Each w1 In Worksheets
    With w1
        If .ProtectContents Then
            On Error Resume Next
            Do 'Dummy do loop
                For i = 65 To 66: For j = 65 To 66: For k = 65 To 66
                For l = 65 To 66: For m = 65 To 66: For i1 = 65 To 66
                For i2 = 65 To 66: For i3 = 65 To 66: For i4 = 65 To 66
                For i5 = 65 To 66: For i6 = 65 To 66: For n = 32 To 126
                    .Unprotect Chr(i) & Chr(j) & Chr(k) & _
                    Chr(l) & Chr(m) & Chr(i1) & Chr(i2) & Chr(i3) & _
                    Chr(i4) & Chr(i5) & Chr(i6) & Chr(n)
                    If Not .ProtectContents Then
                        PWord1 = Chr(i) & Chr(j) & Chr(k) & Chr(l) & _
                        Chr(m) & Chr(i1) & Chr(i2) & Chr(i3) & _
                        Chr(i4) & Chr(i5) & Chr(i6) & Chr(n)
                        MsgBox Application.Substitute(MSGPWORDFOUND2, _
                            "$$", PWord1), vbInformation, HEADER
                        'leverage finding Pword by trying on other sheets
                        For Each w2 In Worksheets
                            w2.Unprotect PWord1
                        Next w2
                        Exit Do 'Bypass all for...nexts
                    End If
                Next: Next: Next: Next: Next: Next
                Next: Next: Next: Next: Next: Next
            Loop Until True
            On Error GoTo 0
        End If
    End With
    Next w1
End If
MsgBox ALLCLEAR & AUTHORS & VERSION & REPBACK, vbInformation, HEADER
End Sub