US Patent 11606193 Distributed session resumption

Techniques for re-establishing secure application sessions using an abbreviated authentication process are disclosed. A plurality of servers each use a deterministic process to independently generate a symmetric key. A client initiates an application session with one of the servers using a full authentication process. Before the connection is terminated, the server generates a session ticket, including security parameters negotiated during the full authentication process, and encrypts the session ticket with the symmetric key. Another server receives the session ticket and decrypts the session ticket using the symmetric key to initiate an abbreviated authentication process that is less costly than the full authentication process. The client and the server establish a secure communication channel based on successful completion of the abbreviated authentication process.