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<?xml version="1.0" encoding="utf-8" standalone="no"?>
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
"http://www.oasis-open.org/docbook/xml/4.5/docbookx.dtd" [
<!ENTITY % aptent SYSTEM "apt.ent">
%aptent;
<!ENTITY % aptverbatiment SYSTEM "apt-verbatim.ent">
%aptverbatiment;
]>
<refentry>
<refentryinfo>
&apt-author.jgunthorpe;
&apt-author.team;
&apt-email;
&apt-product;
<!-- The last update date -->
<date>2012-05-21T00:00:00Z</date>
</refentryinfo>
<refmeta>
<refentrytitle>apt-key</refentrytitle>
<manvolnum>8</manvolnum>
<refmiscinfo class="manual">APT</refmiscinfo>
</refmeta>
<!-- Man page title -->
<refnamediv>
<refname>apt-key</refname>
<refpurpose>APT key management utility</refpurpose>
</refnamediv>
&synopsis-command-apt-key;
<refsect1><title>Description</title>
<para>
<command>apt-key</command> is used to manage the list of keys used
by apt to authenticate packages. Packages which have been
authenticated using these keys will be considered trusted.
</para>
</refsect1>
<refsect1><title>Commands</title>
<variablelist>
<varlistentry><term><option>add</option> <option>&synopsis-param-filename;</option></term>
<listitem>
<para>
Add a new key to the list of trusted keys.
The key is read from the filename given with the parameter
&synopsis-param-filename; or if the filename is <literal>-</literal>
from standard input.
</para>
</listitem>
</varlistentry>
<varlistentry><term><option>del</option> <option>&synopsis-param-keyid;</option></term>
<listitem>
<para>
Remove a key from the list of trusted keys.
</para>
</listitem>
</varlistentry>
<varlistentry><term><option>export</option> <option>&synopsis-param-keyid;</option></term>
<listitem>
<para>
Output the key &synopsis-param-keyid; to standard output.
</para>
</listitem>
</varlistentry>
<varlistentry><term><option>exportall</option></term>
<listitem>
<para>
Output all trusted keys to standard output.
</para>
</listitem>
</varlistentry>
<varlistentry><term><option>list</option></term>
<listitem>
<para>
List trusted keys.
</para>
</listitem>
</varlistentry>
<varlistentry><term><option>finger</option></term>
<listitem>
<para>
List fingerprints of trusted keys.
</para>
</listitem>
</varlistentry>
<varlistentry><term><option>adv</option></term>
<listitem>
<para>
Pass advanced options to gpg. With adv --recv-key you can download the
public key.
</para>
</listitem>
</varlistentry>
<varlistentry><term><option>update</option></term>
<listitem>
<para>
Update the local keyring with the archive keyring and remove from
the local keyring the archive keys which are no longer valid.
The archive keyring is shipped in the <literal>archive-keyring</literal> package of your
distribution, e.g. the <literal>ubuntu-archive-keyring</literal> package in Ubuntu.
</para>
</listitem>
</varlistentry>
<varlistentry><term><option>net-update</option></term>
<listitem>
<para>
Work similar to the <command>update</command> command above, but get the
archive keyring from an URI instead and validate it against a master key.
This requires an installed &wget; and an APT build configured to have
a server to fetch from and a master keyring to validate.
APT in Debian does not support this command and relies on
<command>update</command> instead, but Ubuntu's APT does.
</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1><title>Options</title>
<para>Note that options need to be defined before the commands described in the previous section.</para>
<variablelist>
<varlistentry><term><option>--keyring</option> <option>&synopsis-param-filename;</option></term>
<listitem><para>With this option it is possible to specify a specific keyring
file the command should operate on. The default is that a command is executed
on the <filename>trusted.gpg</filename> file as well as on all parts in the
<filename>trusted.gpg.d</filename> directory, though <filename>trusted.gpg</filename>
is the primary keyring which means that e.g. new keys are added to this one.
</para></listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1><title>Files</title>
<variablelist>
&file-trustedgpg;
<varlistentry><term><filename>/etc/apt/trustdb.gpg</filename></term>
<listitem><para>Local trust database of archive keys.</para></listitem>
</varlistentry>
<varlistentry><term><filename>/usr/share/keyrings/ubuntu-archive-keyring.gpg</filename></term>
<listitem><para>Keyring of Ubuntu archive trusted keys.</para></listitem>
</varlistentry>
<varlistentry><term><filename>/usr/share/keyrings/ubuntu-archive-removed-keys.gpg</filename></term>
<listitem><para>Keyring of Ubuntu archive removed trusted keys.</para></listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1><title>See Also</title>
<para>
&apt-get;, &apt-secure;
</para>
</refsect1>
&manbugs;
&manauthor;
</refentry>
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