Physics-based authentication
US9465960B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 4, 2013 |
| Grant date | Oct 11, 2016 |
| Priority date | — |
| Expiry date | Mar 4, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/0876
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In some examples, a controller is configured to generate a key based on a physics-based output of a component. The controller may, for example, use the key to authenticate communication between at least two nodes, to encrypt data, or to decrypt data. In some examples, the component includes one or more subcomponents, each subcomponent including a cell filled with a gas, a light source configured to transmit a light through the gas cell, and a photodetector configured to sense light transmitted through the gas cell. The photodetector of each subcomponent is configured to generate an electrical signal that changes as a function of one or more properties of the light sourced by the light source, transmitted through the gas cell. The output of the component can is based on the signals generate by the one or more photodetectors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.