The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 16, 2016
Filed:
Dec. 24, 2013
Sanu K. Mathew, Hillsboro, OR (US);
Sudhir K. Satpathy, Hillsboro, OR (US);
Patrick Koeberl, Alsbach-Haenlein, DE;
Jiangtao LI, Beaverton, OR (US);
Ram K. Krishnamurthy, Portland, OR (US);
Anand Rajan, Beaverton, OR (US);
Sanu K. Mathew, Hillsboro, OR (US);
Sudhir K. Satpathy, Hillsboro, OR (US);
Patrick Koeberl, Alsbach-Haenlein, DE;
Jiangtao Li, Beaverton, OR (US);
Ram K. Krishnamurthy, Portland, OR (US);
Anand Rajan, Beaverton, OR (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
Dark-bit masking technologies for physically unclonable function (PUF) components are described. A computing system includes a processor core and a secure key manager component coupled to the processor core. The secure key manager includes the PUF component, and a dark-bit masking circuit coupled to the PUF component. The dark-bit masking circuit is to measure a PUF value of the PUF component multiple times during a dark-bit window to detect whether the PUF value of the PUF component is a dark bit. The dark bit indicates that the PUF value of the PUF component is unstable during the dark-bit window. The dark-bit masking circuit is to output the PUF value as an output PUF bit of the PUF component when the PUF value is not the dark bit and set the output PUF bit to be a specified value when the PUF value of the PUF component is the dark bit.