Hi, This patch series mainly add a new configuration option to enable the root user to load signed keys in the blacklist keyring. This keyring is useful to "untrust" certificates or files. Enabling to safely update this keyring without recompiling the kernel makes it more usable. Regards, Mickaël Salaün (9): certs: Fix blacklisted hexadecimal hash string check certs: Make blacklist_vet_description() more strict certs: Factor out the blacklist hash creation certs: Check that builtin blacklist hashes are valid PKCS#7: Fix missing include certs: Fix blacklist flag type confusion certs: Allow root user to append signed hashes to the blacklist keyring certs: Replace K{U,G}IDT_INIT() with GLOBAL_ROOT_{U,G}ID tools/certs: Add print-cert-tbs-hash.sh MAINTAINERS | 2 + certs/.gitignore | 1 + certs/Kconfig | 10 + certs/Makefile | 15 +- certs/blacklist.c | 210 +++++++++++++----- certs/system_keyring.c | 5 +- crypto/asymmetric_keys/x509_public_key.c | 3 +- include/keys/system_keyring.h | 14 +- include/linux/verification.h | 2 + scripts/check-blacklist-hashes.awk | 37 +++ .../platform_certs/keyring_handler.c | 26 +-- tools/certs/print-cert-tbs-hash.sh | 91 ++++++++ 12 files changed, 335 insertions(+), 81 deletions(-) create mode 100755 scripts/check-blacklist-hashes.awk create mode 100755 tools/certs/print-cert-tbs-hash.sh base-commit: 09162bc32c880a791c6c0668ce0745cf7958f576 -- 2.29.2