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   1 <?xml version="1.0" encoding="ISO-8859-1"?>
   2 <!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"
   3                    "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd"
   4 [
   5   <!-- entities files to use -->
   6   <!ENTITY % global_entities SYSTEM '../entities/global.entities'>
   7   %global_entities;
   8 ]>
   9
  10 <refentry id='amcrypt-ossl.8'>
  11
  12 <refmeta>
  13   <refentrytitle>amcrypt-ossl</refentrytitle>
  14   <manvolnum>8</manvolnum>
  15 &rmi.source;
  16 &rmi.version;
  17 &rmi.manual.8;
  18 </refmeta>
  19 <refnamediv>
  20   <refname>amcrypt-ossl</refname>
  21   <refpurpose>crypt program for &A; symmetric data encryption using OpenSSL</refpurpose>
  22 </refnamediv>
  23 <refentryinfo>
  24 &author.ktill;
  25 </refentryinfo>
  26 <!-- body begins here -->
  27 <refsynopsisdiv>
  28   <cmdsynopsis>
  29     <command>amcrypt-ossl</command>
  30     <arg choice="opt">-d</arg>
  31   </cmdsynopsis>
  32 </refsynopsisdiv>
  33 <refsect1>
  34   <title>DESCRIPTION</title>
  35   <para>
  36     &amcryptossl; uses <emphasis remap='B'>OpenSSL</emphasis> to encrypt
  37     and decrypt data.  OpenSSL is available from <ulink
  38     url="http://www.openssl.org/">www.openssl.org</ulink>. OpenSSL
  39     offers a wide variety of cipher choices (&amcryptossl; defaults to
  40     256-bit AES) and can use hardware cryptographic accelerators on several
  41     platforms.
  42   </para>
  43   <para>
  44     &amcryptossl; will search for the OpenSSL program in the following
  45     directories: /bin:/usr/bin:/usr/local/bin:/usr/ssl/bin:/usr/local/ssl/bin.
  46   </para>
  47 </refsect1>
  48 <refsect1>
  49   <title>PASSPHRASE MANAGEMENT</title>
  50   <para>
  51     &amcryptossl; uses the same pass phrase to encrypt and decrypt data.
  52     It is very important to store and protect the pass phrase properly.
  53     Encrypted backup data can <emphasis remap='B'>only</emphasis> be
  54     recovered with the correct passphrase.
  55   </para>
  56   <para>
  57     OpenSSL's key derivation routines use a salt to guard against
  58     dictionary attacks on the pass phrase; still it is important to pick
  59     a pass phrase that is hard to guess.  The Diceware method (see <ulink
  60     url="http://www.diceware.com/">www.diceware.com</ulink>) can be used to create passphrases
  61     that are difficult to guess and easy to remember.
  62   </para>
  63 </refsect1>
  64 <refsect1>
  65   <title>FILES</title>
  66   <variablelist remap='TP'>
  67     <varlistentry>
  68       <term>/var/lib/amanda/.am_passphrase</term>
  69       <listitem>
  70         <para>
  71           File containing the pass phrase. It should not be readable by any user other than the &A; user.
  72         </para>
  73       </listitem>
  74     </varlistentry>
  75   </variablelist>
  76 </refsect1>
  77
  78 <refsect1>
  79   <title>SEE ALSO</title>
  80   <para>
  81     <citerefentry>
  82       <refentrytitle>amanda</refentrytitle>
  83       <manvolnum>8</manvolnum>
  84     </citerefentry>,
  85     <citerefentry>
  86       <refentrytitle>amanda.conf</refentrytitle>
  87       <manvolnum>5</manvolnum>
  88     </citerefentry>,
  89     <citerefentry>
  90       <refentrytitle>openssl</refentrytitle>
  91       <manvolnum>1</manvolnum>
  92     </citerefentry>,
  93     <citerefentry>
  94       <refentrytitle>amcrypt-ossl-asym</refentrytitle>
  95       <manvolnum>8</manvolnum>
  96     </citerefentry>,
  97     <ulink url="http://wiki.zmanda.com"/>
  98   </para>
  99 </refsect1>
 100
 101 </refentry>