Peripheral-free secure pairing protocol by randomly switching power
US11265722B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 19, 2020 |
| Grant date | Mar 1, 2022 |
| Priority date | — |
| Expiry date | Jul 3, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W8/005
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for pairing a plurality of devices in the context of internet of things (IoT), including: connecting power supplies of the plurality of devices to a same power source, wherein the plurality of devices includes an initiator device and a responder device; synchronizing clocks of the initiator device and the responder device; switching the power source off and on for a plurality of times n; recording time stamps S(T)={T1, T2, T3, . . . Tn} corresponding to time stamps when the initiator device and the responder device switch off in response to switching off of the power source; and performing the pairing of the initiator device and the responder device if each of the initiator device time stamps is within a predefined delay tolerance of a corresponding time stamp of the responder device time stamps, otherwise rejecting the pairing of the initiator device and the responder device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.