I have 2 old documents in ODT format that I either made a typo or forgot the actual password for them. I want to recover the password or simply remove it. What steps (If available) are there to remove such password (and remind me of not put passwords to documents).
I found 2 interesting links. From the links Libreoffice seems to use AES (http://en.wikipedia.org/wiki/AES_(cipher) ) as of LibreOffice 3.5. Before that it was blowfish.
Max pwd Accent OFFICE Length Time Estimate (same conditions) 5 27m03s 6 1d19h 7 173d3h 8 45y197d
First, install xmlcopyeditor from the repositories. Open the content.xml file by right clicking the document from the file manager and choosing Archive Manager as the application.
Open content.xml with xml copy editor, press F11 to properly display the full document and find protected=true. Change it to false and your document will no longer me protected.
It's possible to edit the file with a text editor but it tends to choke and lock up your system for a while.