'\" t
.\"     Title: amcryptsimple
.\"    Author: Kevin Till <kevin.till@zmanda.com>
.\" Generator: DocBook XSL Stylesheets v1.78.1 <http://docbook.sf.net/>
.\"      Date: 12/01/2017
.\"    Manual: System Administration Commands
.\"    Source: Amanda 3.5.1
.\"  Language: English
.\"
.TH "AMCRYPTSIMPLE" "8" "12/01/2017" "Amanda 3\&.5\&.1" "System Administration Commands"
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.SH "NAME"
amcryptsimple \- reference simple crypt program for Amanda symmetric data encryption
.SH "SYNOPSIS"
.HP \w'\fBamcryptsimple\fR\ 'u
\fBamcryptsimple\fR  to be called by Amanda only 
.SH "DESCRIPTION"
.PP
\fBamcryptsimple\fR
calls
\fBgpg\fR
to perform symmetric data encryption on Amanda backup\&.
\fBamcryptsimple\fR
will search for the gpg program in the following directories: /usr/local/bin:/usr/bin:/usr/sbin:/bin:/sbin
.PP
\fBamcryptsimple\fR
uses one passphrase to encrypt the Amanda data and uses the same passphrase to decrypt the Amanda backup data\&.
\fBamcryptsimple\fR
uses AES256 as the symmetric cipher\&.
.SH "HOW TO CREATE PASSPHRASE"
.PP
Store the passphrase inside the home\-directory of the Amanda user ($amanda_user) and protect it with proper permissions:
.sp
.nf
echo my_secret_passphrase > ~$amanda_user/\&.am_passphrase
chown $amanda_user:disk ~$amanda_user/\&.am_passphrase
chmod 700 ~$amanda_user/\&.am_passphrase
.fi
.SH "NOTES"
.PP
Choose a good passphrase and protect it properly\&. Backup data can only be restored with the passphrase\&. There is no backdoor\&.
.PP
If storing and securing passphrase in your environment presents challenges, Amanda provide public\-key data encryption through
\fBamgpgcrypt\fR\&. Public\-key encryption uses the public key to encrypt and uses the private key to decrypt\&.
.SH "SEE ALSO"
.PP
\fBamanda\fR(8),
\fBamanda.conf\fR(5),
\fBamcrypt\fR(8),
\fBamgpgcrypt\fR(8),
\fBamrestore\fR(8),
\fBgpg\fR(1)
.PP
The Amanda Wiki:
: http://wiki.zmanda.com/
.SH "AUTHOR"
.PP
\fBKevin Till\fR <\&kevin\&.till@zmanda\&.com\&>
.RS 4
Zmanda, Inc\&. (http://www\&.zmanda\&.com)
.RE