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  • Committer: Teddy Hogeborn
  • Date: 2015-07-09 20:32:52 UTC
  • Revision ID: teddy@recompile.se-20150709203252-u10p7trfsxc1a9yp
Install client Diffie-Hellman parameters into initramfs.

* debian/control (Package: mandos-client/Recommends): Added
  "gnutls-bin | openssl" (to generate DH parameters).
* debian/mandos-client.postinst (create_dh_params): New function
                                                    called on package
                                                    configure.
* plugins.d/mandos-client.c (main): Bug fix: Work around Debian bug
                                    #633582 also for the
                                    "client-dhparams.pem" file.

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plugins.d/mandos-client.xml
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
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        "http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
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<!ENTITY COMMANDNAME "mandos-client">
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<!ENTITY TIMESTAMP "2015-03-08">
 
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<!ENTITY TIMESTAMP "2015-07-08">
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<!ENTITY % common SYSTEM "../common.ent">
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%common;
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]>
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      <year>2012</year>
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      <year>2013</year>
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      <year>2014</year>
 
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      <year>2015</year>
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      <holder>Teddy Hogeborn</holder>
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      <holder>Björn Påhlsson</holder>
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    </copyright>
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      </arg>
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      <sbr/>
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      <arg>
 
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        <option>--dh-params <replaceable>FILE</replaceable></option>
 
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      </arg>
 
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      <sbr/>
 
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      <arg>
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        <option>--delay <replaceable>SECONDS</replaceable></option>
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      </arg>
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      <sbr/>
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          <para>
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            Sets the number of bits to use for the prime number in the
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            TLS Diffie-Hellman key exchange.  The default value is
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            selected automatically based on the OpenPGP key.
 
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            selected automatically based on the OpenPGP key.  Note
 
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            that if the <option>--dh-params</option> option is used,
 
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            the values from that file will be used instead.
 
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          </para>
 
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        </listitem>
 
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      </varlistentry>
 
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      <varlistentry>
 
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        <term><option>--dh-params=<replaceable
 
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        >FILE</replaceable></option></term>
 
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        <listitem>
 
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          <para>
 
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            Specifies a PEM-encoded PKCS#3 file to read the parameters
 
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            needed by the TLS Diffie-Hellman key exchange from.  If
 
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            this option is not given, or if the file for some reason
 
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            could not be used, the parameters will be generated on
 
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            startup, which will take some time and processing power.
 
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            Those using servers running under time, power or processor
 
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            constraints may want to generate such a file in advance
 
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            and use this option.
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          </para>
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        </listitem>
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      </varlistentry>
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  <refsect1 id="environment">
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    <title>ENVIRONMENT</title>
 
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    <variablelist>
 
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      <varlistentry>
 
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        <term><envar>MANDOSPLUGINHELPERDIR</envar></term>
 
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        <listitem>
 
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          <para>
 
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            This environment variable will be assumed to contain the
 
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            directory containing any helper executables.  The use and
 
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            nature of these helper executables, if any, is
 
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            purposefully not documented.
 
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        </para>
 
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        </listitem>
 
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      </varlistentry>
 
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    </variablelist>
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    <para>
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      This program does not use any environment variables, not even
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      the ones provided by <citerefentry><refentrytitle
 
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      This program does not use any other environment variables, not
 
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      even the ones provided by <citerefentry><refentrytitle
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      >cryptsetup</refentrytitle><manvolnum>8</manvolnum>
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    </citerefentry>.
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    </para>