Quantum computers will break today's crypto. We introduce the two pillars of a secure handshake, key exchange and auth, and how each faces a different quantum threat: "harvest now, decrypt later" versus the slower risk to long-lived trust anchors.
So far, the industry has been testing post-quantum key exchange and authentication separately in a quest for a quantum-secure future. We recently have been experimenting with TLS and SSH using both post-quantum key exchange and authentication. The
Quantum Computers could threaten the security of TLS key exchange and authentication. To assess the performance of post-quantum certificates TLS 1.3, we evaluated NIST Round 2 signature algorithms. See results.
