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Check if a password for encrypted ms office document is correct

I am writing a Python program to decrypt a MS Office encrypted document. Referencing This GitHub Repo for reference. Now what I want to do is try bunch of commonly used passwords against the document....
3
votes
5answers
6k views

Password protect an excel file for a period of time?

I'm trying to find a way to password protect an Excel file (.xlsm) beyond the built-in password encryption options. Ideally: Enter the password File works for a week(/other period of time) After a ...
6
votes
2answers
16k views

Excel 2007 Encryption Strength

With a strong password of 10+ characters, mixed case, etc... is the encryption of an Excel 2007 document secure enough to create reasonably strong defense against a brute force attack? What ...