Adds X25519-SIKEp503 key agreement

cloudflare / tls-tris

crypto/tls, now with 100% more 1.3. THE API IS NOT STABLE AND DOCUMENTATION IS NOT GUARANTEED.

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Closed kriskwiatkowski closed 5 years ago

kriskwiatkowski commented 5 years ago

Adds possibility to establish shared secret with hybrid X25519-SIKEp503
SIKEp503 is a quantum resistant KEM, which produces 128-bit shared secret
Details of the key exchange protocol are described here: https://github.com/henrydcase/draft-kwiatkowski-tls-ecdhe-sike (partially at the moment)
Requires #153