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1. (WO2017150270) COMMUNICATION SYSTEM, HARDWARE SECURITY MODULE, TERMINAL DEVICE, COMMUNICATION METHOD, AND PROGRAM

Pub. No.:    WO/2017/150270    International Application No.:    PCT/JP2017/006340
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Wed Feb 22 00:59:59 CET 2017
IPC: H04L 9/08
H04L 9/32
Applicants: KDDI CORPORATION
KDDI株式会社
Inventors: TAKEMORI Keisuke
竹森 敬祐
ISOHARA Takamasa
磯原 隆将
HONMA Teruaki
本間 輝彰
Title: COMMUNICATION SYSTEM, HARDWARE SECURITY MODULE, TERMINAL DEVICE, COMMUNICATION METHOD, AND PROGRAM
Abstract:
Provided is a communication system provided with a plurality of terminal devices and a route authentication station, wherein each of the terminal devices is provided with an authentication station key generation unit for generating an authentication station public key and an authentication station secret key, an authentication station public key certificate acquisition unit for acquiring an authentication station public key certificate, an authentication station key storage unit for storing the authentication station public key certificate and the authentication station secret key, a transmission unit for transmitting the authentication station public key certificate to other terminal devices, and a verification unit for verifying the authentication station public key certificate by a route authentication station public key certificate and verifying a user when the verification is successful. The route authentication station is provided with a route authentication station key storage unit for storing the route authentication station public key certificate and a route authentication station secret key, a communication unit for receiving information that requests the authentication station public key certificate, and an authentication station public key certificate generation unit for encrypting the authentication station public key by the route authentication station secret key and generating the authentication station public key certificate. The communication unit transmits the authentication station public key certificate to the terminal device that requested the authentication station public key certificate.