PeaZip is a desktop archive and file manager that uses many robust encryption standards (AES256). With PeaZip, you can split files and join them back, compare files, hash files, generate random passwords, etc.
PeaZip supports all major archive file formats, here are some of them:
It can also handle the following formats:
To install PeaZip on Ubuntu 11.04/10.10/10.04, run these commands from the Terminal (Ctrl+Alt+T):
dpkg -i peazip_3.9.LINUX.GTK2-2_all.deb
You can then start PeaZip using the dash (Ubuntu 11.04):
Or open it from the Accessories category.