Title:
ACCESS CONTROL SYSTEM, COMMUNICATION SYSTEM, ACCESS CONTROL METHOD, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2023/148853
Kind Code:
A1
Abstract:
Provided is an access control system for providing access information to first and second communication devices that perform mutual authentication using ID-based encryption, the access control system being configured to: create an access secret key by generating a hash value of the logical sum of a master secret key and a character string based on the access information; create first authentication data by generating a hash value of a first authentication ID for the first communication device using a first hash function, and create second authentication data by generating a hash value of a second authentication ID for the second communication device using a second hash function; create access confirmation data constructed by a product of the access secret key and a generator of a subgroup of a group on a first elliptic curve and a product of the access secret key and a generator of a subgroup of a group on a second elliptic curve; and transmit the first authentication data and the access confirmation data to the first communication device and transmit the second authentication data and the access confirmation data to the second communication device.
Inventors:
MUKAIYAMA AKIO (JP)
MORITA TETSUSHI (JP)
NAGAI AKIRA (JP)
MORITA TETSUSHI (JP)
NAGAI AKIRA (JP)
Application Number:
PCT/JP2022/004095
Publication Date:
August 10, 2023
Filing Date:
February 02, 2022
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
H04L9/32
Foreign References:
| JP2019198052A | 2019-11-14 | |||
| JP2020533835A | 2020-11-19 |
Attorney, Agent or Firm:
ITOH, Tadashige et al. (JP)
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