Deterrence of device counterfeiting, cloning, and subversion by substitution using hardware fingerprinting
US8848905B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 2010 |
| Grant date | Sep 30, 2014 |
| Priority date | — |
| Expiry date | Sep 14, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/34
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Deterrence of device subversion by substitution may be achieved by including a cryptographic fingerprint unit within a computing device for authenticating a hardware platform of the computing device. The cryptographic fingerprint unit includes a physically unclonable function (“PUF”) circuit disposed in or on the hardware platform. The PUF circuit is used to generate a PUF value. A key generator is coupled to generate a private key and a public key based on the PUF value while a decryptor is coupled to receive an authentication challenge posed to the computing device and encrypted with the public key and coupled to output a response to the authentication challenge decrypted with the private key.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.