Token comprising improved physical unclonable function
US8622310B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2010 |
| Grant date | Jan 7, 2014 |
| Priority date | — |
| Expiry date | Feb 9, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/08
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The invention relates to a token, to an integrated circuit comprising the token, to a method of randomizing the token and a system for randomizing the token. The token comprises a physical unclonable function and comprising probing means for probing the physical unclonable function. The physical unclonable function comprises a capacitor comprising a dielectric medium being arranged at least partially between the electrodes of the capacitor. The dielectric medium is configured for contributing to a capacitance value of the capacitor and comprises conducting particles substantially randomly dispersed in the dielectric medium. The conducting particles comprise a phase changeable material being changeable between a first structural state having a first conductivity and a second structural state having a second conductivity different from the first conductivity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.