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AMCRYPT(8)		System Administration Commands		    AMCRYPT(8)

NAME
       amcrypt - reference crypt program for Amanda symmetric data encryption

SYNOPSIS
       amcrypt

DESCRIPTION
       amcrypt requires	aespipe, uuencode and gpg to work. Aespipe is
       available from :	http://loop-aes.sourceforge.net

       amcrypt will search for the aespipe program in the following
       directories: /usr/bin:/usr/local/bin:/sbin:/usr/sbin.

       amcrypt calls amaespipe and pass	the passphrase through file descriptor
       3. The passphrase should	be stored in ~amanda/.am_passphrase.

HOW TO CREATE ENCRYPTION KEYS FOR AMCRYPT
       1. Create 65 random encryption keys and encrypt those keys using	gpg.
       Reading from /dev/random	may take indefinitely long if kernel's random
       entropy pool is empty. If that happens, do some other work on some
       other console (use keyboard, mouse and disks).

       head -c 2925 /dev/random	| uuencode -m -	| head -n 66 | tail -n 65 \ |
       gpg --symmetric -a > ~amanda/.gnupg/am_key.gpg

       This will ask for a passphrase. Remember	this passphrase	as you will
       need it in the next step.

       2. Store	the passphrase inside the home-directory of the	AMANDA-user
       and protect it with proper permissions:
       echo my_secret_passphrase > ~amanda/.am_passphrase
       chown amanda:disk ~amanda/.am_passphrase
       chmod 700 ~amanda/.am_passphrase

KEY AND	PASSPHRASE
       amcrypt uses the	same key to encrypt and	decrypt	data.

       It is very important to store and protect the key and the passphrase
       properly. Encrypted backup data can only	be recovered with the correct
       key and passphrase.

SEE ALSO
       amanda(8), amanda.conf(5), aespipe(1), amaespipe(8), gpg(1)

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

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

Amanda 3.3.9			  02/09/2016			    AMCRYPT(8)

NAME | SYNOPSIS | DESCRIPTION | HOW TO CREATE ENCRYPTION KEYS FOR AMCRYPT | KEY AND PASSPHRASE | SEE ALSO | AUTHOR

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