Integrated circuits having accessible and inaccessible physically unclonable functions

US8928347B2 · kind B2 · utility

Assignee

• Intel Corporation · US

Inventors

• Kevin C. Gotze · Poughkeepsie, US
• Gregory M. Iovino · Hillsboro, US
• Jiangtao Li · Beaverton, US
• David Johnston · Beaverton, US
• Sanu K. Mathew · Hillsboro, US
• George W. Cox · Terrace Park, US
• Anand Rajan · Beaverton, US

Key dates

• Filing date: Sep 28, 2012
• Grant date: Jan 6, 2015
• Expiry date: Jan 1, 2033

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04L2209/12
• WIPO field: Control
• WIPO sector: Instruments

Abstract

An integrated circuit substrate of an aspect includes a plurality of exposed electrical contacts. The integrated circuit substrate also includes an inaccessible set of Physically Unclonable Function (PUF) cells to generate an inaccessible set of PUF bits that are not accessible through the exposed electrical contacts. The integrated circuit substrate also includes an accessible set of PUF cells to generate an accessible set of PUF bits that are accessible through the exposed electrical contacts. Other apparatus, methods, and systems are also disclosed.