Systems and methods for protecting cellular network messages
US12309281B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 2021 |
| Grant date | May 20, 2025 |
| Priority date | — |
| Expiry date | Aug 16, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/80
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A client-side electronic device includes a receiver, a processor, and a memory. The receiver communicates with a message server over a communication medium of a communication network. The memory stores computer-executable instructions, which, when executed by the processor, cause the device to receive, from the message server, a broadcast message, a timestamp associated with the broadcast message, and a first digital signature of the broadcast message and a second digital signature of the timestamp. The executed instruction further cause the device to verify an integrity of the broadcast message based the first or second digital signatures, determine a freshness of the broadcast message based on the received timestamp, calculate a trust state of the broadcast message based on the integrity verification and the freshness determination, and store the broadcast message in the memory along with the calculated trust state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.