Creating encrypted Zip archives with OS X
Sadly, OS X doesn’t come with a way to create or open encrypted Zip archives, even from the command line (-hopefully this will change with Leopard- ). The man pages for zip say that it supports it, but when you pass the
-P option, it complains:
zip error: Invalid command arguments (encryption not supported)
Fortunately, MacPorts (formerly DarwinPorts) to the rescue! There’s a version of the command line zip utility in MacPorts that works as advertised.
Install MacPorts, and install the new command line zip utility:
sudo port install zip
Move the old /usr/bin/zip out of the way, and then create encrypted Zip archives to your hearts content.
zip -re myarchive.zip mydir/ Enter password: ********