crack excel workbook and worksheet protection

1, workbook protection

1.1, open the file using a file compression

1.2, open the directory can be seen in the following directories xl

 

 

1.3, open workbook.xml, find workbookProtection, delete the contents of this tag

2, sheet protection

2.1, see the following documents open worksheet directory

2.2, open sheet1.xml delete sheetProtection on it