Patent ID: 11882119
Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC G  H

Claim 8:
9. A management communication apparatus used in a communication system including a first communication apparatus and a second communication apparatus,
wherein the first communication apparatus is capable of communicating using a plurality of IP addresses in different versions from each other, and
the first communication apparatus sends a discovery request, and the management communication apparatus receives the discovery request;
wherein the first communication apparatus receives a discovery response from the management communication apparatus,
the first communication apparatus and the management communication apparatus start a first authentication process;
wherein the first authentication process includes a mutual authentication process between the first communication apparatus and the management apparatus;
the management communication apparatus includes:
a communication unit configured to (a) receive a notice of a first IP address from the first communication apparatus among the plurality of IP addresses in the first authentication process for entering the communication system, (b) receive a notice of a second IP address from the first communication apparatus among the plurality of IP addresses after the first authentication process, and (c) obtain a request for a cryptographic key for performing cryptographic communication between the first communication apparatus and the second communication apparatus; and
an information processing unit configured to perform, in response to the request for the cryptographic key obtained, a first cryptographic key distribution process for distributing the cryptographic key to the first communication apparatus and a second cryptographic key distribution process for distributing the cryptographic key to the second communication apparatus.