【超凡博俗 之 数码人生】

就好像我在我英文博客提及的那样，今天我接到一个在财务部门的同事的电话，说让我帮助看一看他手头上的一个Excel文件。他想修改一下那个文件，但是所有可供修改的选项，如 Insert, Delete 等都被灰掉了。他问我是不是可能他的文件太大了，而不能够再插入新的表单了。

我要求他把那个大文件传给我，我打开一看，发现所有的 worksheets 都被保护了，这就是他不能修改的原因。我问他是谁做的这个文件，他说是一个已经离开公司的人干的。显然，我们是没有办法找到那个人得知密码了。我试了几个常见的密码，未果。 当然，我可以告诉他另生成一个新文件，然后一个一个sheet地将内容拷贝到新的文件里。不过，看在他以前“偷偷”告诉过我一两个好股票，而且他下午说他又急着要的的份上，我自告奋勇地答应给他“破解密码”试试。

你们知道的，我以前从来不在 Excel 表单里加密码，所以对此毫无知识。不过，这并不阻挡我祭用谷歌大法。果然，用 “unprotect Excel without password” 搜出一堆。意外的是，第一个链接就解决了这个问题。

根据这个网站 http://mcgimpsey.com/excel/removepwords…. 的作者所说，好像 Excel 里的密码可以通过一个VBA Macro 反计算出来，我已经将这个 Macro 代码附在下文。

当然，如果不想拷贝再粘帖下列代码，你也可以直接从他的网站下载一个叫 allinternalpasswords.xls 的文件，然后用你的 Excel打开。这个文件并没有什么可视的表格，但会显示一个工具栏，上只有一个按钮让你开始运行下述代码。

具体做法：先打开你忘记密码的文件，然后再打开你下载的这个解密小文件，但你看到一个警告时，则表示你的 Excel 安全设定很高。这样的话，你必须先降低你的安全设定，再重启 Excel 来重复上述过程。

如果你看见一个新的工具条，点击上面的那个 Remove Password 按钮来运行解密代码，如果你不能找到那个工具条，也没有关系，从你的菜单里找到 Macro 选项，然后从那运行下面这段解码代码。运行代码后，大概半分钟左右（决定于具体文件和密码）你就会看到你忘记的密码了。祝你好运！

VBA MACRO 代码如下:

 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

标签关键词： Excel-tips, Microsoft Office