Comment by amluto
4 hours ago
Your Yubikey itself is doomed.
If you are doing a post-quantum key exchange and only authenticating with the Yubikey, then you are safe from after-the-fact attacks. Well, as long as the PQ key exchange holds up, and I am personally not as optimistic about that as I’d like to be.
> If you are doing a post-quantum key exchange and only authenticating with the Yubikey, then you are safe from after-the-fact attacks.
Let me rephrase it to see if I understand correctly: so it is fine to keep using my security keys today for authentication (e.g. FIDO2?), but everything else should use PQ algorithm because the actual data transfers can be stored now and decrypted later.
Meaning that today (and for a few years), my Yubikey still protects me from my key being stolen when my OS is compromised.
Correct?
Looking forward to a PQ yubikey rev. I would buy a box of them today so I could start experimenting!
Another challenge of the transition is how much silicon we have yet to even implement. Smart cards? Mobile acceleration/offloading? We're at the mercy of vendors.
Is this also true for other TPM/snitching/DRM chips out there? IE will every existing device eventually become jailbreakable in the future or will we unfortunately not even get that benefit from all this?