COMMUNICATION SYSTEM, HARDWARE SECURITY MODULE, TERMINAL DEVICE, COMMUNICATION METHOD, AND PROGRAM

Title:

COMMUNICATION SYSTEM, HARDWARE SECURITY MODULE, TERMINAL DEVICE, COMMUNICATION METHOD, AND PROGRAM

Document Type and Number:

WIPO Patent Application WO/2017/150270

Kind Code:

A1

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.

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Inventors:

TAKEMORI KEISUKE (JP)
ISOHARA TAKAMASA (JP)
HONMA TERUAKI (JP)

Application Number:

PCT/JP2017/006340

Publication Date:

September 08, 2017

Filing Date:

February 21, 2017

Export Citation:

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Assignee:

KDDI CORP (JP)

International Classes:

H04L9/08; H04L9/32

Foreign References:

JP2005223891A	2005-08-18
JP2012182641A	2012-09-20
JP2009277184A	2009-11-26
JP2004072717A	2004-03-04

Other References:

KEISUKE TAKEMORI ET AL.: "Key Managements for ECU and Code Authentications Using Tamper- resistant Secure Element", IEICE TECHNICAL REPORT, vol. 155, no. 365, 10 December 2015 (2015-12-10), pages 227 - 232
See also references of EP 3425842A4

Attorney, Agent or Firm:

TANAI Sumio et al. (JP)

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