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  • Committer: Teddy Hogeborn
  • Date: 2019-02-10 03:50:20 UTC
  • mto: (237.7.594 trunk)
  • mto: This revision was merged to the branch mainline in revision 370.
  • Revision ID: teddy@recompile.se-20190210035020-nttr1tybgwwixueu
http://bugs.debian.org/879538
http://bugs.debian.org/916673
Show debconf note about new TLS key IDs

If mandos-client did not see TLS keys and had to create them, or if
mandos sees GnuTLS version 3.6.6 or later, show an important notice on
package installation about the importance of adding the new key_id
options to clients.conf on the Mandos server.

* debian/control (Package: mandos, Package: mandos-client): Depend on
                                                            debconf.
* debian/mandos-client.lintian-overrides: Override warnings.
* debian/mandos-client.postinst (create_keys): Show notice if new TLS
                                               key files were created.
* debian/mandos-client.templates: New.
* debian/mandos.lintian-overrides: Override warnings.
* debian/mandos.postinst (configure): If GnuTLS 3.6.6 or later is
                                      detected, show an important
                                      notice (once) about the new
                                      key_id option required in
                                      clients.conf.
* debian/mandos.templates: New.

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intro.xml
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<?xml version="1.0" encoding="UTF-8"?>
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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 TIMESTAMP "2019-08-04">
 
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<!ENTITY TIMESTAMP "2019-02-09">
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<!ENTITY % common SYSTEM "common.ent">
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%common;
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]>
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      <year>2016</year>
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      <year>2017</year>
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      <year>2018</year>
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      <year>2019</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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    </para>
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    <para>
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      So, at boot time, the Mandos client will ask for its encrypted
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      data over the network, decrypt the data to get the password, use
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      the password to decrypt the root file system, and the client can
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      then continue booting.
 
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      data over the network, decrypt it to get the password, use it to
 
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      decrypt the root file, and continue booting.
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    </para>
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    <para>
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      Now, of course the initial RAM disk image is not on the
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      long, and will no longer give out the encrypted key.  The timing
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      here is the only real weak point, and the method, frequency and
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      timeout of the server’s checking can be adjusted to any desired
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      level of paranoia.
 
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      level of paranoia
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    </para>
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    <para>
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      (The encrypted keys on the Mandos server is on its normal file
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      plugin requirements.
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    </para>
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  </refsect1>
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  <refsect1 id="systemd">
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    <title>SYSTEMD</title>
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    <para>
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      More advanced startup systems like <citerefentry><refentrytitle
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      >systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
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      already have their own plugin-like mechanisms for allowing
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      multiple agents to independently retrieve a password and deliver
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      it to the subsystem requesting a password to unlock the root
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      file system.  On these systems, it would make no sense to run
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      <citerefentry><refentrytitle>plugin-runner</refentrytitle
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      ><manvolnum>8mandos</manvolnum></citerefentry>, the plugins of
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      which would largely duplicate the work of (and conflict with)
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      the existing systems prompting for passwords.
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    </para>
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    <para>
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      As for <citerefentry><refentrytitle>systemd</refentrytitle
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      ><manvolnum>1</manvolnum></citerefentry> in particular, it has
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      its own <ulink
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      url="https://www.freedesktop.org/wiki/Software/systemd/PasswordAgents/"
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      >Password Agents</ulink> system.  Mandos uses this via its
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      <citerefentry><refentrytitle>password-agent</refentrytitle
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      ><manvolnum>8mandos</manvolnum></citerefentry> program, which
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      is run instead of <citerefentry><refentrytitle
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      >plugin-runner</refentrytitle><manvolnum>8mandos</manvolnum
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      ></citerefentry> when <citerefentry><refentrytitle
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      >systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>
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      is used during system startup.
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    </para>
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  </refsect1>
 
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  <refsect1 id="bugs">
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    <title>BUGS</title>
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    <xi:include href="bugs.xml"/>
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      <manvolnum>8</manvolnum></citerefentry>,
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      <citerefentry><refentrytitle>plugin-runner</refentrytitle>
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      <manvolnum>8mandos</manvolnum></citerefentry>,
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      <citerefentry><refentrytitle>password-agent</refentrytitle>
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      <manvolnum>8mandos</manvolnum></citerefentry>,
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      <citerefentry><refentrytitle>mandos-client</refentrytitle>
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      <manvolnum>8mandos</manvolnum></citerefentry>,
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      <citerefentry><refentrytitle>password-prompt</refentrytitle>