Excel密码保护的解除方法与解除原理

核心提示： Sub PasswordBreaker() 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,

　　Sub PasswordBreaker()
　　 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

第三步：再点击“宏”→“查看宏”，选择“宏名”下的“PasswordBreaker”并点击“执行”，密码就现形了(图4)。