Title:
KEY EXCHANGE SYSTEM, COMMUNICATION DEVICE, KEY EXCHANGE METHOD, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2021/010444
Kind Code:
A1
Abstract:
Provided is a key exchange system that generates a shared key for performing encrypted communication between a plurality of communication devices by a key-exchange protocol with authentication using an ID-base cryptography. The key exchange system is characterized in that the plurality of communication devices respectively comprises: a first generation means that uses a secret key of the communication device to generate a short-term secret key; a second generation means that uses the short-term secret key to generate a short-term public key of the communication device; a third generation means that uses the short-term secret key, a short-term public key generated by another communication device, and public information generated by the communication device or the another communication device or public information generated by a key distribution center to generate secret information of the communication device; and a fourth generation means that performs a pairing operation using the secret key of the communication device and the secret information to generate a shared key for performing encrypted communication with the other communication device.
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Inventors:
TOMIDA JUNICHI (JP)
HOSHINO FUMITAKA (JP)
NAGAI AKIRA (JP)
FUJIOKA ATSUSHI (JP)
SUZUKI KOUTAROU (JP)
HOSHINO FUMITAKA (JP)
NAGAI AKIRA (JP)
FUJIOKA ATSUSHI (JP)
SUZUKI KOUTAROU (JP)
Application Number:
PCT/JP2020/027712
Publication Date:
January 21, 2021
Filing Date:
July 16, 2020
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
NATIONAL UNIV CORPORATION TOYOHASHI UNIV OF TECHNOLOGY (JP)
NATIONAL UNIV CORPORATION TOYOHASHI UNIV OF TECHNOLOGY (JP)
International Classes:
H04L9/08
Foreign References:
| JP2019132060A | 2019-08-08 |
Other References:
LIQUN CHEN ,CAROLINE KUDLA: "Identity based authenticated key agreement protocols from pairings", 16TH IEEE COMPUTER SECURITY FOUNDATIONS WORKSHOP, 2003. PROCEEDINGS, 30 June 2003 (2003-06-30), pages 219 - 233, XP010645196, ISSN: 1063-6900, DOI: 10.1109/ CSFW.2003.1212715
TIAN, B. ET AL.: "mOT+: An Efficient and Secure Identity-Based Diffie-Hellman Protocol over RSA Group", LECTURE NOTES IN COMPUTER SCIENCE, vol. 9473, 30 January 2016 (2016-01-30), pages 407 - 421, XP047335306, DOI: 10.1007/978-3-319-27998-5_26
SMART, N. P.: "Identity-based authenticated key agreement protocol based on Weil pairing", ELECTRONICS LETTERS, vol. 38, no. 13, 7 August 2002 (2002-08-07), pages 630 - 632, XP006018324, Retrieved from the Internet [retrieved on 20200909], DOI: 10.1049/el:20020387
FUJIOKA, HOSHINOKOBAYASHI, SUZUKIUSTAOGLU, YONEYAMA: "id-eCK Secure ID-Based Authenticated Key Exchange on Symmetric and Asymmetric Pairing", IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS, COMMUNICATIONS AND COMPUTER SCIENCES, vol. E96-A, no. 6, 2013, pages 1139 - 1155, XP001584424, DOI: 10.1587/transfun.E96.A.1139
B USTAOGLU: "Obtaining a secure and efficient key agreement protocol from (H)MQV and NAXOS", DESIGNS, CODES AND CRYPTOGRAPHY, vol. 46, March 2008 (2008-03-01), pages 329 - 342, XP019571803
See also references of EP 3985915A4
TIAN, B. ET AL.: "mOT+: An Efficient and Secure Identity-Based Diffie-Hellman Protocol over RSA Group", LECTURE NOTES IN COMPUTER SCIENCE, vol. 9473, 30 January 2016 (2016-01-30), pages 407 - 421, XP047335306, DOI: 10.1007/978-3-319-27998-5_26
SMART, N. P.: "Identity-based authenticated key agreement protocol based on Weil pairing", ELECTRONICS LETTERS, vol. 38, no. 13, 7 August 2002 (2002-08-07), pages 630 - 632, XP006018324, Retrieved from the Internet
FUJIOKA, HOSHINOKOBAYASHI, SUZUKIUSTAOGLU, YONEYAMA: "id-eCK Secure ID-Based Authenticated Key Exchange on Symmetric and Asymmetric Pairing", IEICE TRANSACTIONS ON FUNDAMENTALS OF ELECTRONICS, COMMUNICATIONS AND COMPUTER SCIENCES, vol. E96-A, no. 6, 2013, pages 1139 - 1155, XP001584424, DOI: 10.1587/transfun.E96.A.1139
B USTAOGLU: "Obtaining a secure and efficient key agreement protocol from (H)MQV and NAXOS", DESIGNS, CODES AND CRYPTOGRAPHY, vol. 46, March 2008 (2008-03-01), pages 329 - 342, XP019571803
See also references of EP 3985915A4
Attorney, Agent or Firm:
ITOH, Tadashige et al. (JP)
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