Secure communication encryption and decryption mechanism in a wireless communication system
US12323791B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 9, 2022 |
| Grant date | Jun 3, 2025 |
| Priority date | — |
| Expiry date | May 9, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W84/20
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method of secure communications between a master and a plurality of devices in a wireless communications network, the method comprising: encrypting, on said master, downlink plaintext for multicast transmission to a plurality of devices over a wireless communications link utilizing a symmetric key encryption algorithm in accordance with a first counter value and a shared symmetric session key; and decrypting, on one of said devices, multicast downlink cyphertext received from said master over said wireless communications link utilizing a symmetric key decryption algorithm in accordance with a second counter value and said shared symmetric session key; wherein said wireless communications link is a short distance wireless link in that said master and said plurality of downlink devices are located within a single industrial complex.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.