[PATCH 0/2] Preloaded revocation keys
From: Eric Snowberg
Date: Wed Sep 30 2020 - 16:15:47 EST
The Secure Boot Forbidden Signature Database, dbx, contains a list of
now revoked signatures and keys previously approved to boot with UEFI
Secure Boot enabled. Currently EFI_CERT_X509_SHA256_GUID and
EFI_CERT_SHA256_GUID can be preloaded (at build time) into the system
blacklist keyring.
Add the ability to also preload EFI_CERT_X509_GUID dbx entries.
This series can be applied on its own; however to use preloaded
revocation certificates, [1] should be applied first.
[1] https://www.spinics.net/lists/keyrings/msg08422.html
Eric Snowberg (2):
certs: Move load_system_certificate_list to a common function
certs: Add ability to preload revocation certs
certs/Kconfig | 8 +++++
certs/Makefile | 20 ++++++++++--
certs/blacklist.c | 17 ++++++++++
certs/common.c | 56 +++++++++++++++++++++++++++++++++
certs/common.h | 9 ++++++
certs/revocation_certificates.S | 21 +++++++++++++
certs/system_keyring.c | 49 ++---------------------------
scripts/Makefile | 1 +
8 files changed, 132 insertions(+), 49 deletions(-)
create mode 100644 certs/common.c
create mode 100644 certs/common.h
create mode 100644 certs/revocation_certificates.S
base-commit: 02de58b24d2e1b2cf947d57205bd2221d897193c
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2.18.1