Secure wireless communication between controllers and accessories
US10630647B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 6, 2017 |
| Grant date | Apr 21, 2020 |
| Priority date | — |
| Expiry date | Jan 6, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W4/70
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A controller and an accessory controllable by the controller can communicate using secure read and write procedures. The procedures can include encrypting identifiers of accessory characteristics targeted by a read or write operation as well as any data being read or written. The procedures can also include the accessory returning a cryptographically signed response verifying receipt and execution of the read or write instruction. In some instances, a write procedure can be implemented as a timed write in which a first instruction containing the write data is sent separately from a second instruction to execute the write operation; the accessory can disregard the write data if the second instruction is not received within a timeout period after receiving the first instruction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.