Month: April 2024
Key update – Secrets and Keys in TLS 1.3
12.5.3 Key update After the TLS handshake, both Alice and Bob can update their traffic keys at any point in time by sending the KeyUpdate message. Alice’s new traffic key is generated by deriving server˙application˙traffic˙secret˙N+1 from server˙application˙traffic˙secret˙N as follows:server_application_traffic_secret_N+1 = HKDF-Expand-Label(server_application_traffic_secret_N, “traffic upd”, “”, Hash.length) After that, the new traffic key is computed using the…
Read More