Realization Method of Flexible Private Network System
Naonobu Okazaki, Mi Rang Park, Akira Watanabe, Shoichiro Seno, Tetsuo Ideguchi, Masayuki Yabe · IEEJ Transactions on Electronics Information and Systems · 2000
FPN (Flexible Private Network) is a new service, which enables a user to join multiple secure communication groups within an Intranet. FPN defines a secure communication group by a single, encryption key (session key). All communication entities in a FPN request a session key to the key management entity and share the same encryption key. Also, to keep the secrecy of FPNs well, session keys should be updated frequently. In this paper, we consider a realization method to apply FPN over the enterprise networks and define key distribution method for session key sharing. An application of this method for secure communication systems will show that inexpensive and flexible VPNs with various communication groups can be constructed easily. It is also shown that the proposed method works effectively in an enterprise network system.