Secure Boot: Difference between revisions

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~~Secure Boot can be enabled on NixOS using the project [https~~:~~//github.com/nix~~-~~community/lanzaboote Lanzaboote].~~ Secure Boot is a ~~UEFI feature~~ that only ~~allows trusted~~ operating ~~systems~~ to boot. Lanzaboote has two components: <code>lzbt</code> and <code>stub</code>. <code>lzbt</code> signs and installs the boot files on the ESP. <code>stub</code> is a UEFI application that loads the kernel and initrd from the ESP.

Secure Boot usually refers to a platform firmware capability to verify the boot components and ensure that only your own operating system is allowed to boot.

~~{{warning|Lanzaboote is still in development and requires some prerequisites and precautions. Currently it's only available for nixos~~-~~unstable. For more information~~, ~~please see~~ the ~~GitHub repository or~~ the ~~Quick Start guide~~.}}

Secure Boot has multiple implementations, the most well known one is UEFI Secure Boot, which relies on the UEFI platform firmware, but other implementations can exist on embedded systems.

~~== Requirements ==~~

[[Category:Security]]

[[Category:Booting]]

The Secure Boot ~~implementation~~ of ~~Lanzaboote requires a system installed in UEFI mode together with systemd-boot enabled. This can be checked by running~~ <code>bootctl ~~status~~</code>:

== Checking Secure Boot status ==

<~~syntaxHighlight~~ lang=console>

The easiest way to check if your machine has Secure Boot enabled is through the use of [[Systemd]]'s <code>bootctl</code>. There is no need to be using [[Systemd/boot|systemd-boot]] as your bootloader for this command to work. <syntaxhighlight lang="console">

$ bootctl status

System:

Firmware: UEFI 2.70 (~~Lenovo 0~~.~~4720~~)

Firmware: UEFI 2.80 (American Megatrends 5.25)

Secure Boot: ~~disabled~~ (~~disabled~~)

Firmware Arch: x64

TPM2 Support: yes

Secure Boot: enabled (user)

Boot into FW: supported

TPM2 Support: yes

Measured UKI: yes

Boot into FW: supported

...

</syntaxhighlight>The system above has secure boot enabled and enforced. Other values include <code>disabled (setup)</code> for Setup Mode, <code>disabled (disabled)</code> or <code>disabled (unsupported)</code>. The unsupported tag only appears if your device firmware does not support Secure Boot at all.

If you see <code>disabled (disabled)</code>, this means you will need to enable Secure Boot in your UEFI firmware settings before proceeding to use one of the projects outlined below.

~~Current Boot Loader~~:

~~Product: systemd-boot 251.7~~

== Enabling Secure Boot on NixOS ==

...

On NixOS, there are currently two main ways to enable Secure Boot, [[Lanzaboote]] and [[Limine]]. See their respective wiki pages for step by step instructions on each.

~~</syntaxHighlight>~~

~~It is recommended to enable a BIOS password and full disc encryption to prevent attacks against UEFI and~~ Secure Boot.

For Secure Boot to be most effective, there are certain conditions which should also be met. The most important are:

~~== Setup ==~~

# The UEFI firmware is protected by a strong password to prevent an untrusted drive from being booted or Secure Boot being disabled.

# Full disk encryption is enabled so that your drive cannot simply be read by putting it another another machine.

# Ideally, default OEM/third party keys are not in use as these have been shown to weaken the security of Secure Boot significantly.<ref>https://habr.com/ru/articles/446238/</ref> However, this may brick some devices which use Microsoft-signed OpROMS for certain hardware during the boot process, particularly some laptops, so you must be certain before removing them. It may be impossible to fix if, for example, the GPU relies on these OpROMS.

~~Follow the instructions in the~~ [https://~~github~~.~~com~~/~~nix-community~~/~~lanzaboote~~/~~blob~~/~~master/docs/QUICK_START.md Quick Start guide~~].

== See Also ==

[https://wiki.archlinux.org/title/Unified_Extensible_Firmware_Interface/Secure_Boot Arch Wiki/Secure Boot] Extensive information on Secure Boot including using UKIs.

</translate>

~~[[Category:Security]]~~

~~[[Category:System]]~~

@@ Line 1: / Line 1: @@
-Secure Boot can be enabled on NixOS using the project [https://github.com/nix-community/lanzaboote Lanzaboote]. Secure Boot is a UEFI feature that only allows trusted operating systems to boot. Lanzaboote has two components: <code>lzbt</code> and <code>stub</code>. <code>lzbt</code> signs and installs the boot files on the ESP. <code>stub</code> is a UEFI application that loads the kernel and initrd from the ESP.
+<languages/>
+<translate>
+<!--T:1-->
+Secure Boot usually refers to a platform firmware capability to verify the boot components and ensure that only your own operating system is allowed to boot.
-{{warning|Lanzaboote is still in development and requires some prerequisites and precautions. Currently it's only available for nixos-unstable. For more information, please see the GitHub repository or the Quick Start guide.}}
+<!--T:2-->
+Secure Boot has multiple implementations, the most well known one is UEFI Secure Boot, which relies on the UEFI platform firmware, but other implementations can exist on embedded systems.
-== Requirements ==
+<!--T:21-->
+[[Category:Security]]
+[[Category:Booting]]
-The Secure Boot implementation of Lanzaboote requires a system installed in UEFI mode together with systemd-boot enabled.  This can be checked by running <code>bootctl status</code>:
+<!--T:22-->
+== Checking Secure Boot status ==
-<syntaxHighlight lang=console>
+The easiest way to check if your machine has Secure Boot enabled is through the use of [[Systemd]]'s <code>bootctl</code>. There is no need to be using [[Systemd/boot|systemd-boot]] as your bootloader for this command to work. <syntaxhighlight lang="console">
 $ bootctl status
 System:
-     Firmware: UEFI 2.70 (Lenovo 0.4720)
+    Firmware: UEFI 2.80 (American Megatrends 5.25)
-  Secure Boot: disabled (disabled)
+    Firmware Arch: x64
- TPM2 Support: yes
+    Secure Boot: enabled (user)
- Boot into FW: supported
+    TPM2 Support: yes
+    Measured UKI: yes
+    Boot into FW: supported
+...
+</syntaxhighlight>The system above has secure boot enabled and enforced. Other values include <code>disabled (setup)</code> for Setup Mode, <code>disabled (disabled)</code> or <code>disabled (unsupported)</code>. The unsupported tag only appears if your device firmware does not support Secure Boot at all.
+If you see <code>disabled (disabled)</code>, this means you will need to enable Secure Boot in your UEFI firmware settings before proceeding to use one of the projects outlined below.
-Current Boot Loader:
+<!--T:23-->
-      Product: systemd-boot 251.7
+== Enabling Secure Boot on NixOS ==
-...
+On NixOS, there are currently two main ways to enable Secure Boot, [[Lanzaboote]] and [[Limine]]. See their respective wiki pages for step by step instructions on each.
-</syntaxHighlight>
-It is recommended to enable a BIOS password and full disc encryption to prevent attacks against UEFI and Secure Boot.
+<!--T:24-->
+For Secure Boot to be most effective, there are certain conditions which should also be met. The most important are:
-== Setup ==
+<!--T:25-->
+# The UEFI firmware is protected by a strong password to prevent an untrusted drive from being booted or Secure Boot being disabled.
+# Full disk encryption is enabled so that your drive cannot simply be read by putting it another another machine.
+# Ideally, default OEM/third party keys are not in use as these have been shown to weaken the security of Secure Boot significantly.<ref>https://habr.com/ru/articles/446238/</ref> However, this may brick some devices which use Microsoft-signed OpROMS for certain hardware during the boot process, particularly some laptops, so you must be certain before removing them. It may be impossible to fix if, for example, the GPU relies on these OpROMS.
-Follow the instructions in the [https://github.com/nix-community/lanzaboote/blob/master/docs/QUICK_START.md Quick Start guide].
+<!--T:26-->
+== See Also ==
+[https://wiki.archlinux.org/title/Unified_Extensible_Firmware_Interface/Secure_Boot Arch Wiki/Secure Boot] Extensive information on Secure Boot including using UKIs.
+</translate>
-[[Category:Security]]
+<references />
-[[Category:System]]