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9 amcrypt-ossl
\14 crypt program for Amanda symmetric data encryption using OpenSSL
17 amcrypt-ossl uses OpenSSL to encrypt and decrypt data. OpenSSL is available
18 from www.openssl.org. OpenSSL offers a wide variety of cipher choices
19 ( amcrypt-ossl defaults to 256-bit AES) and can use hardware cryptographic
20 accelerators on several platforms.
21 amcrypt-ossl will search for the OpenSSL program in the following directories:
22 /bin:/usr/bin:/usr/local/bin:/usr/ssl/bin:/usr/local/ssl/bin.
26 amcrypt-ossl uses the same pass phrase to encrypt and decrypt data. It is very
27 important to store and protect the pass phrase properly. Encrypted backup data
28 can only be recovered with the correct passphrase.
29 OpenSSL's key derivation routines use a salt to guard against dictionary
30 attacks on the pass phrase; still it is important to pick a pass phrase that is
31 hard to guess. The Diceware method (see www.diceware.com) can be used to create
32 passphrases that are difficult to guess and easy to remember.
38 /var/lib/amanda/.am_passphrase
39 File containing the pass phrase. It should not be readable by any user
40 other than the Amanda user.
45 amanda(8), amanda.conf(5), openssl(1), amcrypt-ossl-asym(8)
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49 amcrypt Home amcrypt-ossl-asym