Creating key stubs from smartcard without public key

[Thomas Glanzmann]

Hello Felix,

> Is there any way those public keys or key stubs can be created from
> the keys stored on the Yubikey or any smartcard itself?

the easiest way is:

(infra) [~] ssh-add -L
ssh-rsa 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 cardno:000604936887

Cheers,
        Thomas