[0/2] Preloaded revocation keys

Message

Eric Snowberg Sept. 30, 2020, 8:15 p.m. UTC

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