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Encrypting contents of bzipped tarballs

Frybread
Frybread asked
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Last Modified: 2010-04-22
I have a crude backup system for our office network consisting of a bash script that runs nightly at 3 AM, makes bzipped tarballs of some major directories and their sub-directories, and then creates a new folder to store these bzipped tarballs.

Once or twice a month on a Friday afternoon, I'll SSH into the server and create .iso files containing these bzipped tarballs and burn them to CD's.

Anyone with the smallest amount of computer knowledge could easily figure out how to unpack and view all this data if they got hold of any of these CD's.

How do I go about encrypting all this data prior to the tarballing and bzipping?
Can I work some encryption commands into my bash script that will do this for me?
What should I read up about in order to accomplish the creation of encrypted bzipped tarballs.

Thanks for you time and help.

Fry
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Top Expert 2005
Commented:
You could do such chain:
tar the data, then encrypt it (with gpg), then bzip2 it.
tar [options] | gpg -c | bzip2 > output.encrypted.tar.bz2

or use zip or rar for that purpose (instead tar/bzip2)

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