https://argentumcation.com/posts/post-1/

Generating an SSH Resident Key

Written by: ArgentumCation
1 min read
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import { Accordion, AccordionItem } from “accessible-astro-components”;

Here’s how to create a resident SSH Key using a security key

ssh-keygen -t ed25519-sk -Oresident

If that one doesn’t work,

ssh-keygen -t ed25519-sk -Oresident -Oapplication=ssh:key