8ee92f5194
- Implement NV index mode for TPM 2.0 key protector
0001-protectors-Implement-NV-index.patch
- Fall back to passphrase mode when the key protector fails to
unlock the disk
0002-cryptodisk-Fallback-to-passphrase.patch
- Wipe out the cached key cleanly
0003-cryptodisk-wipe-out-the-cached-keys-from-protectors.patch
- Make diskfiler to look up cryptodisk devices first
0004-diskfilter-look-up-cryptodisk-devices-first.patch
- Version bump to 2.12~rc1
* Added:
- grub-2.12~rc1.tar.xz
* Removed:
- grub-2.06.tar.xz
* Patch dropped merged by new version:
- grub2-GRUB_CMDLINE_LINUX_RECOVERY-for-recovery-mode.patch
- grub2-s390x-02-kexec-module-added-to-emu.patch
- grub2-efi-chainloader-root.patch
- grub2-Fix-incorrect-netmask-on-ppc64.patch
- 0001-osdep-Introduce-include-grub-osdep-major.h-and-use-i.patch
- 0002-osdep-linux-hostdisk-Use-stat-instead-of-udevadm-for.patch
- 0002-net-read-bracketed-ipv6-addrs-and-port-numbers.patch
- grub2-s390x-10-keep-network-at-kexec.patch
- 0001-Fix-build-error-in-binutils-2.36.patch
- 0001-emu-fix-executable-stack-marking.patch
- 0046-squash-verifiers-Move-verifiers-API-to-kernel-image.patch
- 0001-30_uefi-firmware-fix-printf-format-with-null-byte.patch
- 0001-tpm-Pass-unknown-error-as-non-fatal-but-debug-print-.patch
- 0001-Filter-out-POSIX-locale-for-translation.patch
OBS-URL: https://build.opensuse.org/request/show/1105405
OBS-URL: https://build.opensuse.org/package/show/Base:System/grub2?expand=0&rev=458
60 lines
2.3 KiB
Diff
60 lines
2.3 KiB
Diff
From f7b9580133cf346d77f345d175fa5cb8a591be16 Mon Sep 17 00:00:00 2001
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From: Daniel Axtens <dja@axtens.net>
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Date: Sat, 15 Aug 2020 02:00:57 +1000
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Subject: [PATCH 05/23] docs/grub: Document signing grub under UEFI
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Before adding information about how grub is signed with an appended
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signature scheme, it's worth adding some information about how it
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can currently be signed for UEFI.
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Signed-off-by: Daniel Axtens <dja@axtens.net>
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---
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docs/grub.texi | 22 +++++++++++++++++++++-
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1 file changed, 21 insertions(+), 1 deletion(-)
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--- a/docs/grub.texi
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+++ b/docs/grub.texi
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@@ -6345,6 +6345,7 @@
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* Secure Boot Advanced Targeting:: Embedded information for generation number based revocation
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* Measured Boot:: Measuring boot components
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* Lockdown:: Lockdown when booting on a secure setup
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+* Signing GRUB itself:: Ensuring the integrity of the GRUB core image
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@end menu
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@node Authentication and authorisation
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@@ -6423,7 +6424,7 @@
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GRUB's @file{core.img} can optionally provide enforcement that all files
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subsequently read from disk are covered by a valid digital signature.
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-This document does @strong{not} cover how to ensure that your
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+This section does @strong{not} cover how to ensure that your
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platform's firmware (e.g., Coreboot) validates @file{core.img}.
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If environment variable @code{check_signatures}
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@@ -6586,6 +6587,25 @@
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The @samp{lockdown} variable is set to @samp{y} when the GRUB is locked down.
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Otherwise it does not exit.
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+@node Signing GRUB itself
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+@section Signing GRUB itself
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+
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+To ensure a complete secure-boot chain, there must be a way for the code that
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+loads GRUB to verify the integrity of the core image.
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+
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+This is ultimately platform-specific and individual platforms can define their
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+own mechanisms. However, there are general-purpose mechanisms that can be used
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+with GRUB.
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+
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+@section Signing GRUB for UEFI secure boot
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+
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+On UEFI platforms, @file{core.img} is a PE binary. Therefore, it can be signed
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+with a tool such as @command{pesign} or @command{sbsign}. Refer to the
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+suggestions in @pxref{UEFI secure boot and shim} to ensure that the final
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+image works under UEFI secure boot and can maintain the secure-boot chain. It
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+will also be necessary to enrol the public key used into a relevant firmware
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+key database.
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+
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@node Platform limitations
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@chapter Platform limitations
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