Key exchange system, communication apparatus, key exchange method and program
US11902428B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jul 16, 2020 |
| Grant date | Feb 13, 2024 |
| Priority date | — |
| Expiry date | Sep 28, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/3242
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.