amcryptsimple.8

开源备份软件源码 AMANDA, the Advanced Maryland Automatic Network Disk Archiver, is a backup system that a

.\"     Title: amcryptsimple
.\"    Author: 
.\" Generator: DocBook XSL Stylesheets v1.73.2 <http://docbook.sf.net/>
.\"      Date: 05/13/2008
.\"    Manual: 
.\"    Source: 
.\"
.TH "AMCRYPTSIMPLE" "8" "05/13/2008" "" ""
.\" disable hyphenation
.nh
.\" disable justification (adjust text to left margin only)
.ad l
.SH "NAME"
amcryptsimple - reference simple crypt program for Amanda symmetric data encryption
.SH "SYNOPSIS"
.HP 14
\fBamcryptsimple\fR  to be called by \fIAmanda\fR only 
.SH "DESCRIPTION"
.PP

\fBamcryptsimple\fR
calls
\fBgpg\fR
to perform symmetric data encryption on
\fIAmanda\fR
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
\fIAmanda\fR
data and uses the same passphrase to decrypt the
\fIAmanda\fR
backup data\.
\fBamcryptsimple\fR
uses AES256 as the symmetric cipher\.
.SH "HOW TO CREATE PASSPHRASE"


Store  the  passphrase  inside the home\-directory of the AMANDA\-user($amanda_user) and protect it with proper permissions:

   echo my_secret_passphrase > ~$amanda_user/\.am_passphrase
   chown $amanda_user:disk ~$amanda_user/\.am_passphrase
   chmod 700 ~$amanda_user/\.am_passphrase
.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,
\fIAmanda\fR
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 "AUTHOR"
.PP
The tool and its documentation was written by Zmanda, Inc (http://www\.zmanda\.com/)\.
.SH "SEE ALSO"
.PP
\fBamanda\fR(8),
\fBamanda.conf\fR(5),
\fBamcrypt\fR(8),
\fBamgpgcrypt\fR(8),
\fBamrestore\fR(8),
\fBgpg\fR(1),
\fI\%http://wiki.zmanda.com\fR