Comment by Jamesbeam

Hello Professor Albrecht,

thank you for your work.

I’ve been looking for this everywhere the past few days but I couldn’t find any official information relating the use of https://signal.org/docs/specifications/pqxdh/ in the signal protocol version that WhatsApp is currently using.

Do you have any information if the protocol version they currently use provides post-quantum forward secrecy and SPQR or are the current e2ee chats vulnerable to harvest now, decrypt later attacks?

Thanks for your time.