Post-processing mechanism for physically unclonable functions

US10129036B2 · kind B2 · utility

Assignee

• Intel Corporation · US

Inventors

• Jiangtao Li · Beaverton, US
• Wei Wu · Portland, US
• Patrick Koeberl · Hähnlein, DE

Key dates

• Filing date: Sep 18, 2014
• Grant date: Nov 13, 2018
• Expiry date: Jun 26, 2036

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04L9/0866
• WIPO field: Digital communication
• WIPO sector: Electrical engineering

Abstract

In accordance with embodiments disclosed herein, there is provided systems and methods for providing a post-processing mechanism for physically unclonable functions. An integrated circuit includes a physically unclonable function (PUF) unit including an adaptive PUF logic. The adaptive PUF logic receives a PUF response having a plurality of bits. The adaptive PUF logic also determines whether a record exists for bit among the plurality of bits in the PUF response. The record includes a stored bit location and a stored bit value corresponding to the stored bit location. The adaptive PUF logic also overrides a bit value of the bit in the PUF response with the stored bit value when it is determined that the record exists for the bit in the PUF response. The bit value of the bit in the PUF response is different from the stored bit value.