Secure activation, service mode access and usage control of IOT devices using bearer tokens
US11606210B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 17, 2020 |
| Grant date | Mar 14, 2023 |
| Priority date | — |
| Expiry date | Apr 14, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/84
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The disclosed technology teaches providing limited usage of a first device that includes local resources for verifying authenticity of a Macaroon access token with caveats (MATwC), a unique key and a local proximity interface. A second device used by the service technician receives the MATwC, establishes a connection with the first device over the local proximity interface using the MATwC, and sends a request to enter limited usage mode. The MATwC originated with an authentication server as a MAT, using the unique key of the first device and modified by appending caveats that narrowed authorization provided by the MAT with the limited usage mode, and applied a message authentication code chaining algorithm to sign a resulting the MATwC. The first device performs local authentication of the MATwC, evaluating the appended caveats and enters the limited usage mode consistent with the appended caveats, without requiring connected resources to authenticate the MATwC.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.