NAME

       amcrypt-ossl - crypt program for Amanda symmetric data encryption using OpenSSL

SYNOPSIS

       amcrypt-ossl [-d]

DESCRIPTION

       amcrypt-ossl uses OpenSSL to encrypt and decrypt data. OpenSSL is available from
       www.openssl.org. OpenSSL offers a wide variety of cipher choices ( amcrypt-ossl defaults
       to 256-bit AES) and can use hardware cryptographic accelerators on several platforms.

       amcrypt-ossl will search for the OpenSSL program in the following directories:
       /bin:/usr/bin:/usr/local/bin:/usr/ssl/bin:/usr/local/ssl/bin.

PASSPHRASE MANAGEMENT

       amcrypt-ossl uses the same pass phrase to encrypt and decrypt data. It is very important
       to store and protect the pass phrase properly. Encrypted backup data can only be recovered
       with the correct passphrase.

       OpenSSL's key derivation routines use a salt to guard against dictionary attacks on the
       pass phrase; still it is important to pick a pass phrase that is hard to guess. The
       Diceware method (see www.diceware.com) can be used to create passphrases that are
       difficult to guess and easy to remember.

FILES

       /var/lib/amanda/.am_passphrase
           File containing the pass phrase. It should not be readable by any user other than the
           Amanda user.

SEE ALSO

       amanda(8), amanda.conf(5), openssl(1), amcrypt-ossl-asym(8)

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

AUTHOR

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

NOTES

        1. www.openssl.org
           http://www.openssl.org/

        2. www.diceware.com
           http://www.diceware.com/