Patent ID: 11956238
Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Field: Digital communication (Electrical engineering)
Classification: CPC H  E  G | IPC E  H

Claim 3:
4. The authorization system according to claim 2 further comprising:
a communication carrier server; and
a certification authority server, wherein
the communication carrier server is configured to transmit information about the non-representative guest and information about the representative guest terminal stored in advance to the certification authority server based on a request from the non-representative guest terminal and the representative guest terminal, and
the certification authority server is configured to generate the electronic certificate of the non-representative guest based on the information about the non-representative guest transmit the electronic certificate to the non-representative guest terminal, and generate the electronic certificate of the representative guest based on the information about the representative guest transmit the electronic certificate to the representative guest terminal.