2 .\" Title: amcrypt-ossl
3 .\" Author: Kevin Till <kevin.till@zmanda.com>
4 .\" Generator: DocBook XSL Stylesheets v1.76.1 <http://docbook.sf.net/>
6 .\" Manual: System Administration Commands
7 .\" Source: Amanda 3.3.2
10 .TH "AMCRYPT\-OSSL" "8" "07/25/2012" "Amanda 3\&.3\&.2" "System Administration Commands"
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12 .\" * Define some portability stuff
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15 .\" http://bugs.debian.org/507673
16 .\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
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21 .\" * set default formatting
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28 .\" * MAIN CONTENT STARTS HERE *
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31 amcrypt-ossl \- crypt program for Amanda symmetric data encryption using OpenSSL
33 .HP \w'\fBamcrypt\-ossl\fR\ 'u
34 \fBamcrypt\-ossl\fR [\-d]
41 to encrypt and decrypt data\&. OpenSSL is available from
42 www\&.openssl\&.org\&. OpenSSL offers a wide variety of cipher choices (
44 defaults to 256\-bit AES) and can use hardware cryptographic accelerators on several platforms\&.
48 will search for the OpenSSL program in the following directories: /bin:/usr/bin:/usr/local/bin:/usr/ssl/bin:/usr/local/ssl/bin\&.
49 .SH "PASSPHRASE MANAGEMENT"
53 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
55 be recovered with the correct passphrase\&.
57 OpenSSL\*(Aqs 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
58 www\&.diceware\&.com) can be used to create passphrases that are difficult to guess and easy to remember\&.
61 /var/lib/amanda/\&.am_passphrase
63 File containing the pass phrase\&. It should not be readable by any user other than the Amanda user\&.
70 \fBamcrypt-ossl-asym\fR(8)
73 : http://wiki.zmanda.com/
76 \fBKevin Till\fR <\&kevin\&.till@zmanda\&.com\&>
78 Zmanda, Inc\&. (http://www\&.zmanda\&.com)
84 \%http://www.openssl.org/
89 \%http://www.diceware.com/