Add Password to Report Editing

Summary

Can I add a password to a file to prevent some from opening/editing it?

Content

Hi all - is it possible to add a password to a OTBI or BIP file to prevent anyone from opening it to view the code/set-up or to edit it?  I, as well as others on our team, work on some confidential projects and do not want others to be able to modify the report and see the code that we have set-up, which could in turn tell people information they shouldn't know (EX: List of employees that might receive a special bonus, specific person numbers are used to pull salary information and using formulas to do specific calculations).