pedro chromazzi
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An error occurred while saving the comment I just want to invite the proton service to use the X25519Kyber768 Post-Quantum Key Exchange during the https communication with the protonMail server. At least, it would be great if this or another NIST advanced PQ encryption was used for every communication with the proton servers. Seems that the power of the actual quantum computers (august 2024) is growing faster than the expectations and that the AES-256-GCM cipher has the counted days. So it could be a critical aspect.
About https://proton.me/blog/post-quantum-encryption, I don't know much about communication system encryption, but my question is: is the data still safe even if the connection with your server flows? I think that is like a chain; if even one of the rings falls, all the chain is broken. So I think that not only does the server have to adopt pq data encryption, but it also has to require a pq resilient https connection; otherwise, the first encryption is vain.