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Big Tech passkey implementations are a trap | Proton (proton.me)

submitted 7 months ago by AnActOfCreation@programming.dev to c/technology@lemmy.world

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Big Tech has implemented passkeys in a way that locks users into their platforms rather than providing universal security
Passkeys were developed to replace passwords for better account security, but their rollout by Apple and Google has limited their potential
Proton Pass offers passkeys that are universal, easy to use, and available to everyone for improved online security and privacy.

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[–] vhstape@lemmy.sdf.org 54 points 7 months ago* (last edited 7 months ago) (22 children)

Better yet: use a hardware 2FA token that supports passkeys

[–] BlackEco@lemmy.blackeco.com 36 points 7 months ago (20 children)

The issue is that most of them are limited in the amount of passkeys they can manage.

In the case of the Yubikey 5

Currently, YubiKeys can store a maximum of 25 passkeys.

https://www.yubico.com/blog/a-yubico-faq-about-passkeys/

[–] mp3@lemmy.ca 5 points 7 months ago (4 children)

It depends on the passkey type (resident vs non-resident keys)

[–] hydration9806@lemmy.ml 3 points 7 months ago* (last edited 7 months ago) (1 children)

Passkey = Resident Key

Nonresident keys are not passkeys, they are solely a second form of authentication meaning the service you are logging into still requires a password.

[–] Spotlight7573@lemmy.world 1 points 7 months ago (1 children)

Couldn't a site theoretically use a nonresident key with just a username, in place of a password?

This seems to imply it might be possible:

https://developers.yubico.com/WebAuthn/WebAuthn_Developer_Guide/Resident_Keys.html

Discoverable Credential means that the private key and associated metadata is stored in persistent memory on the authenticator, instead of encrypted and stored on the relying party server. If the credentials were stored on the server, then the server would need to return that to the authenticator before the authenticator could decrypt and use it. This would mean that the user would need to provide a username to identify which credential to provide, and usually also a password to verify their identity.

[–] hydration9806@lemmy.ml 1 points 7 months ago* (last edited 7 months ago)

For sure, but that still isn't a passkey. The method you are talking about is the equivalent of non-passphrase protected SSH protocol, which is a single form of authentication (i.e. if someone has your security key they have your account).

The term passkey implies MFA: having a physical key and a password, a physical key and a fingerprint scan, or equivalent.

Sure the username could be considered the password, but usernames are not designed to be protected the same way. For example, they typically are stored in clear text in a services database, so one databreach and it's over.

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