Title:
KEY ISSUING SYSTEM, KEY ISSUING METHOD, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2023/238172
Kind Code:
A1
Abstract:
A key issuing system 1 comprises: a multifunctional communication gateway 10 including a communication unit 101 capable of performing communication via a communication network N1 and a communication network N2 that uses a bandwidth narrower than that of the communication network N1; and at least one communication device 20 capable of performing communication via the communication network N2. The multifunctional communication gateway 10 comprises a first security unit 102 in a secure environment. The first security unit 102 comprises a master key generation unit 1021 that generates a master public key, a user secret key generation unit 1022 that generates a user secret key by using the master public key and an identifier of the communication device 20, and a key distribution unit 1023 that transmits the user secret key to the communication device 20 having the received identifier.
Inventors:
KUDO FUMIAKI (JP)
NAGAI AKIRA (JP)
IIJIMA YUSUKE (JP)
NAGAI AKIRA (JP)
IIJIMA YUSUKE (JP)
Application Number:
PCT/JP2022/022725
Publication Date:
December 14, 2023
Filing Date:
June 06, 2022
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
H04L9/08
Foreign References:
| JP2021507564A | 2021-02-22 |
Other References:
MENG YIFAN, LI JINGZHAO: "Data Sharing Mechanism of Sensors and Actuators of Industrial IoT Based on Blockchain-Assisted Identity-Based Cryptography", SENSORS, MDPI, CH, vol. 21, no. 18, CH , pages 6084, XP093114801, ISSN: 1424-8220, DOI: 10.3390/s21186084
SANKARAN SRIRAM: "Lightweight security framework for IoTs using identity based cryptography", 2016 INTERNATIONAL CONFERENCE ON ADVANCES IN COMPUTING, COMMUNICATIONS AND INFORMATICS (ICACCI), IEEE, 21 September 2016 (2016-09-21), pages 880 - 886, XP032989898, DOI: 10.1109/ICACCI.2016.7732156
BEN A. FISCH ; DHINAKARAN VINAYAGAMURTHY ; DAN BONEH ; SERGEY GORBUNOV: "Iron: Functional Encryption using Intel SGX", IACR, INTERNATIONAL ASSOCIATION FOR CRYPTOLOGIC RESEARCH, vol. 20170428:221846, 29 April 2017 (2017-04-29), pages 1 - 37, XP061022762, DOI: 10.1145/3133956.3134106
SANKARAN SRIRAM: "Lightweight security framework for IoTs using identity based cryptography", 2016 INTERNATIONAL CONFERENCE ON ADVANCES IN COMPUTING, COMMUNICATIONS AND INFORMATICS (ICACCI), IEEE, 21 September 2016 (2016-09-21), pages 880 - 886, XP032989898, DOI: 10.1109/ICACCI.2016.7732156
BEN A. FISCH ; DHINAKARAN VINAYAGAMURTHY ; DAN BONEH ; SERGEY GORBUNOV: "Iron: Functional Encryption using Intel SGX", IACR, INTERNATIONAL ASSOCIATION FOR CRYPTOLOGIC RESEARCH, vol. 20170428:221846, 29 April 2017 (2017-04-29), pages 1 - 37, XP061022762, DOI: 10.1145/3133956.3134106
Attorney, Agent or Firm:
NAKAO, Naoki et al. (JP)
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