GNOME Bugzilla – Bug 438710
creating password-protected zip from nautilus menu
Last modified: 2010-01-25 10:28:41 UTC
The bug has been opened on https://bugs.launchpad.net/ubuntu/+source/file-roller/+bug/97114 "Binary package hint: file-roller File-roller should allow creating password-protected zip (or rar or...) files. ... I want to say that when I right-click in a file and select "Create archive...", in the dialog that appears would be nice if there is a option to create password-protected zip. Thanks for your work too."
This is a Nautilus bug, it has nothing to do with File Roller.
this is implemented in recent versions