this post was submitted on 07 Sep 2023
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There is no recovery if you have a single hardware token in use only. But that's a structional issue with your concept.
Instead, it is recommended to have two (or more) identical Hardware Tokens to replace one that dies.
It is also smart to keep the seeds for things like 2fa in some secure backup with schizophrenic paranoia proof Security measures.
Yeah this.
Having a backup/recovery for the YubiKey is really just another potential security hole.
Ideally you have a backup clone of the key in case yours is lost/broken.
Keeping a recovery seed or backup password instead would be inherently less secure as the YubiKey uses an HMAC challenge-response key rather than a static password/key file.
A static password or key would be a better target for hackers as it would be easier to crack so having that option would lower your overall security.