破解Excel密码保护文件

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