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Thanks - "ssh-add -L" talks to the ssh-agent and asks what keys are loaded. That shows all keys including keys from the yubikey and from the local filesystem.

Thanks - "ssh-add -L" talks to the ssh-agent and asks what keys are loaded. That shows all keys including keys from the yubikey and from the local filesystem. I am looking for a command that shows what's on the yubikey. From what I gather, if the command from the article is run: "ssh-keygen -t ed25519-sk -O resident", the key is stored in a FIDO2 slot. If that's the case, my question is how to show what is in the FIDO2 slots and how to delete them?

veganjay 4y ago
Found it: Install ykman: https://github.com/Yubico/yubikey-manager#linux https://github.com/Yubico/yubikey-manager#linux Show FIDO2 credentials: $ ykman fido credentials list ssh: 0000000000000000000000000000000000000000000000000000000000000000 openssh Delete: $ ykman fido credentials delete CREDENTIAL