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83 lines
3.3 KiB
XML
83 lines
3.3 KiB
XML
<?xml version="1.0"?>
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<!--*-nxml-*-->
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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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<!-- SPDX-License-Identifier: LGPL-2.1-or-later -->
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<refentry id="systemd-tpm2-setup.service" conditional='ENABLE_BOOTLOADER'
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xmlns:xi="http://www.w3.org/2001/XInclude">
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<refentryinfo>
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<title>systemd-tpm2-setup.service</title>
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<productname>systemd</productname>
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</refentryinfo>
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<refmeta>
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<refentrytitle>systemd-tpm2-setup.service</refentrytitle>
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<manvolnum>8</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>systemd-tpm2-setup.service</refname>
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<refname>systemd-tpm2-setup-early.service</refname>
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<refname>systemd-tpm2-setup</refname>
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<refpurpose>Set up the TPM2 Storage Root Key (SRK) at boot</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<para><filename>systemd-tpm2-setup.service</filename></para>
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<para><filename>/usr/lib/systemd/systemd-tpm2-setup</filename></para>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para><filename>systemd-tpm2-setup.service</filename> and
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<filename>systemd-tpm2-setup-early.service</filename> are services that generate the Storage Root Key
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(SRK) if it hasn't been generated yet, and stores it in the TPM.</para>
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<para>The services will store the public key of the SRK key pair in a PEM file in
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<filename>/run/systemd/tpm2-srk-public-key.pem</filename> and
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<filename>/var/lib/systemd/tpm2-srk-public-key.pem</filename>. It will also store it in TPM2B_PUBLIC
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format in <filename>/run/systemd/tpm2-srk-public-key.tpm2_public</filename> and
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<filename>/var/lib/systemd/tpm2-srk-public-key.tpm2b_public</filename>.</para>
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<para><filename>systemd-tpm2-setup-early.service</filename> runs very early at boot (possibly in the
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initrd), and writes the SRK public key to <filename>/run/systemd/tpm2-srk-public-key.*</filename> (as
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<filename>/var/</filename> is generally not accessible this early yet), while
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<filename>systemd-tpm2-setup.service</filename> runs during a later boot phase and saves the public key
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to <filename>/var/lib/systemd/tpm2-srk-public-key.*</filename>.</para>
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</refsect1>
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<refsect1>
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<title>Files</title>
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<variablelist>
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<varlistentry>
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<term><filename>/run/systemd/tpm2-srk-public-key.pem</filename></term>
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<term><filename>/run/systemd/tpm2-srk-public-key.tpm2b_public</filename></term>
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<listitem><para>The SRK public key in PEM and TPM2B_PUBLIC format, written during early boot.</para>
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<xi:include href="version-info.xml" xpointer="v255"/></listitem>
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</varlistentry>
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<varlistentry>
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<term><filename>/var/lib/systemd/tpm2-srk-public-key.pem</filename></term>
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<term><filename>/var/lib/systemd/tpm2-srk-public-key.tpm2_public</filename></term>
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<listitem><para>The SRK public key in PEM and TPM2B_PUBLIC format, written during later boot (once
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<filename>/var/</filename> is available).</para>
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<xi:include href="version-info.xml" xpointer="v255"/></listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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<refsect1>
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<title>See Also</title>
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<para>
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<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>
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</para>
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</refsect1>
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</refentry>
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