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:
Oct. 17, 2023
Filed:
Apr. 25, 2019
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Akira Nagai, Tokyo, JP;
Kotaro Suzuki, Tokyo, JP;
NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo, JP;
Abstract
A key sharing system that generates a shared key that is used to perform encrypted communication between a first device and a second device according to an authenticated key sharing protocol, at least one device of the first device and the second device including: calculation means for calculating a shared value σof shared values σ(i=1, . . . , n) that are used to generate the shared key, the shared value σbeing calculated through pairing computation, using a private key Das an input; entrusting means for entrusting an information processing apparatus that is connected to the device via a network, with calculation of a shared value σ(k≠j) of the shared values σ(i=1, . . . , n), the shared value σbeing calculated through pairing computation, using a private key Das an input; and key generation means for generating the shared key, using the shared value σcalculated by the calculation means and the shared value σcalculated by the information processing apparatus.