Google quantum-proofs HTTPS by squeezing 15kB of data into 700-byte space
Google on Friday unveiled its plan for its Chrome browser to secure HTTPS certificates against quantum computer attacks without breaking the Internet. The objective is a tall order. The quantum-resistant cryptographic data needed to transparently publish TLS certificates is roughly 40 times bigger than the classical cryptographic material used today. A typical X.509 certificate chain used today comprises six elliptic curve signatures and two EC public keys, each of them only 64 bytes. This material can be cracked through the quantum-enabled Shor’s algorithm. The full chain is roughly 4 kilobytes. All this data must be transmitted when a browser connects [...]