The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 13, 2024
Filed:
Jul. 16, 2020
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
National University Corporation Toyohashi University of Technology, Aichi, JP;
Junichi Tomida, Tokyo, JP;
Fumitaka Hoshino, Tokyo, JP;
Akira Nagai, Tokyo, JP;
Atsushi Fujioka, Kanagawa, JP;
Koutarou Suzuki, Aichi, JP;
Abstract
A key exchange system in which a shared key is generated for executing encrypted communication between communication apparatuses according to an authenticated key exchange protocol using ID-based encryption, wherein each communication apparatus includes a memory and a processor configured to generate a short-term private key by using a private key of the communication apparatus; generate a short-term public key of the communication apparatus by using the short-term private key; generate private information on the communication apparatus by using the short-term private key, a short-term public key generated by another communication apparatus, and public information generated by the communication apparatus and said another communication apparatus or public information generated by a key delivering center; and generate the shared key for executing encrypted communication with said another communication apparatus by executing a pairing operation using the private key of the communication apparatus and the private information.