Asynchronous Ratchet Tree
πϦʔͷߏஙʹ
• Diffie-HellmanͰ༻͍Δ༗ݶ܈·ͨପԁۂઢ
• Derive-Key-Pair function: octet string͔Βkey pairΛੜ͢Δؔ
͕ඞཁɻ·ͨɺπϦʔͷ֤ϊʔυ secret octet string (optional),
asymmetric private key (optional), asymmetric public key Λ࣋ͭɻ֤
ϊʔυͷ伴ϖΞ Derive-Key-Pair functionͰಋग़͞ΕΔɻ