Re:Passkeys: A Shattered Dream
by crote on Friday April 26, 2024 @02:27PM
(#40172574)
Because the security key doesn't store any public keys.
Basically, the security key stores a single symmetric key. It'll generate a public/private keypair on registration, encrypt it, and send it to the server. On authentication the server will return the keypair back to the security key, which decrypts it and uses the retrieved private key for authentication.
Basically, the security key stores a single symmetric key. It'll generate a public/private keypair on registration, encrypt it, and send it to the server. On authentication the server will return the keypair back to the security key, which decrypts it and uses the retrieved private key for authentication.