$ sudo keyctl list %:.builtin_trusted_keys 3 keys in keyring: 855940452: ---lswrv 0 0 asymmetric: Build time autogenerated kernel key: 94aab4eff3692c1dc967cbf81b568f930ac61570 590144975: ---lswrv 0 0 asymmetric: Canonical Ltd. Kernel Module Signing: 88f752e560a1e0737e31163a466ad7b70a850c19 336909020: ---lswrv 0 0 asymmetric: Canonical Ltd. Live Patch Signing: 14df34d1a87cf37625abec039ef2bf521249b969
$ uname -a Linux lamuella 5.4.0-67-generic #75-Ubuntu SMP Fri Feb 19 18:03:38 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
$ sudo keyctl list %:.builtin_ trusted_ keys dc967cbf81b568f 930ac61570 37e31163a466ad7 b70a850c19 625abec039ef2bf 521249b969
3 keys in keyring:
855940452: ---lswrv 0 0 asymmetric: Build time autogenerated kernel key: 94aab4eff3692c1
590144975: ---lswrv 0 0 asymmetric: Canonical Ltd. Kernel Module Signing: 88f752e560a1e07
336909020: ---lswrv 0 0 asymmetric: Canonical Ltd. Live Patch Signing: 14df34d1a87cf37
$ uname -a
Linux lamuella 5.4.0-67-generic #75-Ubuntu SMP Fri Feb 19 18:03:38 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux