linux-stable/certs
Eric Snowberg 087aa4ed37 KEYS: Introduce link restriction for machine keys
Introduce a new link restriction that includes the trusted builtin,
secondary and machine keys. The restriction is based on the key to be
added being vouched for by a key in any of these three keyrings.

With the introduction of the machine keyring, the end-user may choose to
trust Machine Owner Keys (MOK) within the kernel. If they have chosen to
trust them, the .machine keyring will contain these keys.  If not, the
machine keyring will always be empty.  Update the restriction check to
allow the secondary trusted keyring to also trust machine keys.

Allow the .machine keyring to be linked to the secondary_trusted_keys.
After the link is created, keys contained in the .machine keyring will
automatically be searched when searching secondary_trusted_keys.

Suggested-by: Mimi Zohar <zohar@linux.ibm.com>
Signed-off-by: Eric Snowberg <eric.snowberg@oracle.com>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Tested-by: Mimi Zohar <zohar@linux.ibm.com>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
2022-03-08 13:55:52 +02:00
..
.gitignore certs: move scripts/extract-cert to certs/ 2022-01-08 18:28:21 +09:00
blacklist.c certs: Add ability to preload revocation certs 2021-03-11 16:33:49 +00:00
blacklist.h certs: Add EFI_CERT_X509_GUID support for dbx entries 2021-03-11 16:31:28 +00:00
blacklist_hashes.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
blacklist_nohashes.c certs/blacklist_nohashes.c: fix const confusion in certs blacklist 2018-02-21 15:35:43 -08:00
common.c certs: Move load_system_certificate_list to a common function 2021-03-11 16:32:38 +00:00
common.h certs: Move load_system_certificate_list to a common function 2021-03-11 16:32:38 +00:00
default_x509.genkey certs: check-in the default x509 config file 2021-12-11 22:09:14 +09:00
extract-cert.c certs: move scripts/extract-cert to certs/ 2022-01-08 18:28:21 +09:00
Kconfig certs: move the 'depends on' to the choice of module signing keys 2021-12-11 22:09:14 +09:00
Makefile certs: Fix build error when CONFIG_MODULE_SIG_KEY is empty 2022-01-23 00:08:44 +09:00
revocation_certificates.S certs: Add ability to preload revocation certs 2021-03-11 16:33:49 +00:00
system_certificates.S ima: ensure IMA_APPRAISE_MODSIG has necessary dependencies 2021-04-26 21:54:23 -04:00
system_keyring.c KEYS: Introduce link restriction for machine keys 2022-03-08 13:55:52 +02:00