Grouping of physically unclonable functions

Patent metadata

Field	Value
Publication number	US-9048834-B2
Application number	US-201313997268-A
Country	US
Kind code	B2
Filing date	Jan 16, 2013
Priority date	Jan 16, 2013
Publication date	Jun 2, 2015
Grant date	Jun 2, 2015

Abstract

A physically unclonable function (PUF) includes a plurality of PUF elements to generate an N-bit PUF signature. For each bit in the N-bit PUF signature, a PUF group of K number of individual PUF elements indicating a single-bit PUF value is used to generate a group bit. The group bits are more repeatable than the individual PUF elements. The value K may be selected such that (K+1)/2 is an odd number.

First claim

What is claimed is:

1. A processor comprising:
a plurality of physically unclonable function (PUF) elements to indicate a corresponding plurality of single-bit PUF values;
signature logic to generate an N-bit PUF signature, wherein the N-bit PUF signature includes a group bit from each of N groups of the plurality of PUF elements, and wherein a value of the group bit for a PUF group is to indicate a value associated with a majority of the PUF elements in the PUF group, each of t…

Assignees

• Intel Corp

Inventors

• Li Jiangtao
• Koeberl Patrick
• Mathew Sanu K
• Wu Wei

Classifications

• H03K19/17768 Primary

  Electricity · mapped topic

• G06F21/72

  Physics · mapped topic

• H04L9/3278

  Electricity · mapped topic

• G09C1/00

  Physics · mapped topic

• H04L9/3247

  Electricity · mapped topic