Hi, I didn't mean to send such email, but more than one person already asked me about it, so, sharing it for a broader audience. TL;DR; I started to use a new key to sign stuff two months ago, if you had any key mismatch problem, update your keyring. My apologies for any trouble. == Long Version == Because my smartcard does not accept ed25519 keys, I added a few new subkeys to the very same certify GPG key, so I can make my keys safer. Once my key got updated in kernel keyring I started using it for signing stuff. I made the foolish assumption that automated packaging systems were querying the kernel keyring or the public key repos (aka keys.openpgp.org) when trying to verify the signatures. These new sub-keys belongs to the very same certify key as the another keys, which are still valid. Nothing got revoked. My certify (or master key) is still the same: 4020459E58C1A52511F5399113F703E6C11CF6F0 With a new extra subkey added under it: 0C1D891C50A732E0680F7B644675A111E50B5FA6 The kernel keyring has been updated in February with these new keys, so again, my apologies for any unnecessary trouble, I assumed two months were enough for systems who relies on GPG signatures to update their databases. Below is the commit that updated the kernel's gpg database: commit d3b3885a394fd3144c43bba98596665b42024e19 Author: Konstantin Ryabitsev <konstantin@xxxxxxxxxxxxxxxxxxx> Date: Tue Feb 27 14:54:51 2024 -0500 Periodic update from keyservers Signed-off-by: Konstantin Ryabitsev <konstantin@xxxxxxxxxxxxxxxxxxx> And directly from the kernel.org's database: pgpkeys $ gpg --show-keys --with-subkey-fingerprint keys/13F703E6C11CF6F0.asc pub ed25519 2022-05-27 [C] 4020459E58C1A52511F5399113F703E6C11CF6F0 uid Carlos Eduardo Maiolino <carlos@xxxxxxxxxxx> uid Carlos Eduardo Maiolino <cmaiolino@xxxxxxxxxx> uid Carlos Eduardo Maiolino <cem@xxxxxxxxxx> sub ed25519 2022-05-27 [A] 36C5DFE1ECA79D1D444FDD904E5621A566959599 sub ed25519 2022-05-27 [S] FA406E206AFF7873897C6864B45618C36A24FD23 <-- Old key still valid sub cv25519 2022-05-27 [E] 5AE98D09B21AFBDE62EE571EE01E05EA81B10D5C sub nistp384 2024-02-15 [A] D3DF1E315DBCB4EDF392D6ED2BE8B50768C99F00 sub nistp384 2024-02-15 [S] 0C1D891C50A732E0680F7B644675A111E50B5FA6 <-- New key sub nistp384 2024-02-15 [E] C79922EE45DEA3F58B99B4701201F4FA234EEFD8