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Full Discussion: How to use GPG for myself on Thumb drive?
Top Forums UNIX for Dummies Questions & Answers How to use GPG for myself on Thumb drive? Post 302249789 by Perderabo on Wednesday 22nd of October 2008 05:51:03 AM
Old 10-22-2008
I do this all the time. I just use:
gpg -e --cipher-algo AES-256 plaintext.file
to encrypt a file. I don't have any key files nor gpg config files. It just prompts me for a passphrase and I use a multi-word phase.

to decrypt I just use:
gpg encrypted.file

and again I get prompted for a passphrase. This can move files around between linux and xp. It works for Solaris 10 too. I have not yet been able to mount a thumb drive on Solaris 8 though.

Any of those disk scrubbing program is adequate in my opinion. But I like to take old disk drives apart. I get a handful of screws and a few jumpers and those really cool magnets. I have not yet retired a thumb drive, but I would probably do the disk scubber followed by just breaking it up.

Also, take a look at: www.ironkey.com
The company I work for rejected it because it is only AES-128 but I think that was too paranoid.
 

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LEARN ABOUT CENTOS

amcryptsimple

AMCRYPTSIMPLE(8)					  System Administration Commands					  AMCRYPTSIMPLE(8)

NAME

       amcryptsimple - reference simple crypt program for Amanda symmetric data encryption

SYNOPSIS

       amcryptsimple  to be called by Amanda only

DESCRIPTION

       amcryptsimple calls gpg to perform symmetric data encryption on Amanda backup.  amcryptsimple will search for the gpg program in the
       following directories: /usr/local/bin:/usr/bin:/usr/sbin:/bin:/sbin

       amcryptsimple uses one passphrase to encrypt the Amanda data and uses the same passphrase to decrypt the Amanda backup data.  amcryptsimple
       uses AES256 as the symmetric cipher.

HOW TO CREATE PASSPHRASE

       Store the passphrase inside the home-directory of the Amanda user ($amanda_user) and protect it with proper permissions:

       echo my_secret_passphrase > ~$amanda_user/.am_passphrase
       chown $amanda_user:disk ~$amanda_user/.am_passphrase
       chmod 700 ~$amanda_user/.am_passphrase

NOTES

       Choose a good passphrase and protect it properly. Backup data can only be restored with the passphrase. There is no backdoor.

       If storing and securing passphrase in your environment presents challenges, Amanda provide public-key data encryption through amgpgcrypt.
       Public-key encryption uses the public key to encrypt and uses the private key to decrypt.

SEE ALSO

       amanda(8), amanda.conf(5), amcrypt(8), amgpgcrypt(8), amrestore(8), gpg(1)

       The Amanda Wiki: : http://wiki.zmanda.com/

AUTHOR

       Kevin Till <kevin.till@zmanda.com>
	   Zmanda, Inc. (http://www.zmanda.com)

Amanda 3.3.3							    01/10/2013							  AMCRYPTSIMPLE(8)
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