Physics-based key generation
US8995658B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 13, 2013 |
| Grant date | Mar 31, 2015 |
| Priority date | — |
| Expiry date | Apr 8, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/24
- 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, may be generated based on a physics-based output generated a component. The output generated by the component may vary over time, such that the controller is configured to generate a different key, depending on the time at which the output from the component used to generate the key was generated by the component. In some examples, the key is not stored in a memory, and is a discrete signal that only exists in real-time while the component is active and generating the detectable output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.