On 20.07.2023 kl. 03.47 Michael Richardson wrote:

Andrew Gallagher <andr...@andrewg.com> wrote: The yubikey
     > does not provide any method to copy the private key material back off
     > that storage..

So I can generate the key on laptop, copy it to multiple yubikey, and do the
crypto on the device, and the yubikey won't let the private key out again.
Once I destroy the copy on my laptop, them I'm good.

Right, although I would recommend to copy key onto two keys, in case you loose your primary key or it breaks for some reason.

Another possibility is to keep the "generator pc" on a safe place.

--
Klaus

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