Excel—“撤銷工作表保護密碼”的破解並獲取原始密碼

Excel—“撤銷工作表保護密碼”的破解並獲取原始密碼
在日常工作中，您是否遇到過這樣的情況：您用Excel編制的報表、表格、程序等，在單元格中設置了公式、函數等，爲了防止其他人修改您的設置或者防止您自己無意中修改，您可能會使用Excel的工作表保護功能，但時間久了保護密碼容易忘記，這該怎麼辦？有時您從網上下載的Excel格式的小程序，您想修改，但是作者加了工作表保護密碼，怎麼辦？您只要按照以下步驟操作，Excel工作表保護密碼瞬間即破！
    1、打開您需要破解保護密碼的Excel文件；
    2、依次點擊菜單欄上的工具---宏----錄製新宏，輸入宏名字如:aa；
    3、停止錄製(這樣得到一個空宏)；
    4、依次點擊菜單欄上的工具---宏----宏,選aa,點編輯按鈕；
5、刪除窗口中的所有字符(只有幾個),替換爲下面的內容；

從橫線下開始複製
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Option Explicit

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
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複製到橫線以上
    6、關閉編輯窗口；
    7、依次點擊菜單欄上的工具---宏-----宏,選AllInternalPasswords,運行,確定兩次； 
    等一會,就會出現以下對話框：這就是Excel密碼對應的原始密碼(此密碼和原先設置的密碼都能打開此文檔。如果是別人的文檔，你又想恢復密碼設置，就可以用此密碼進行保護，他就能用他設置的密碼打開，你可以試試，很有趣的。字母一定要大寫)：



 

再點擊確定。Excel的原始密碼就被清除了!!