Service authorization for IoT devices operating locally
US11184366B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 11, 2020 |
| Grant date | Nov 23, 2021 |
| Priority date | — |
| Expiry date | May 16, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W12/63
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Systems, devices, and techniques for service authorization are described. A described device includes a transceiver to communicate with an authorization server, and a processor. The processor can set an authorization timer for a first time period based on obtaining an authorization from the authorization server, and activate device features for a duration of the first time period. The processor can receive from the authorization server an authorization message that includes an authorization key hash based on a shared secret key and a server timestamp, determine a local key hash based on the shared secret key and a local timestamp, set the authorization timer for a second time period based on the authorization key hash matching the local key hash, and maintain an activation of the features for a duration of the second time period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.