方法三破解：Excel工作表保护密码

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