GROUPING OF PHYSICALLY UNCLONABLE FUNCTIONS

摘要

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.

主权项

1. An electronic device, 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 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 indicates a value associated with a majority of the PUF elements in the PUF group; and an output to read the N-bit PUF signature.