Tamper resistant lock assembly having physical unclonable functions
US10421432B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 30, 2017 |
| Grant date | Sep 24, 2019 |
| Priority date | — |
| Expiry date | Jun 23, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C9/00706
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A user-customizable locking assembly includes a user-customizable key, a user-customizable key receiver, and a key receiver receptacle. Each of the user-customizable key, a user-customizable key receiver, and a key receiver receptacle includes a physical unclonable function (PUF) circuit configured to provide a PUF response in response to receiving a challenge signal. The PUF circuits of the user-customizable key and a user-customizable key receiver include personalization fuses that allow a user to further personalize or change the PUF response produced by the corresponding PUF circuits. The key receiver receptacle also includes anti-theft fuses, which are activated if the user-customizable key receiver is removed from the key receiver receptacle. In use, a protected system may utilize the PUF responses from the each of the PUF circuits to authenticate the user-customizable locking assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.