System and methods for generating unclonable security keys in integrated circuits

摘要

A system and methods that generates a physical unclonable function (“PUF”) security key for an integrated circuit (“IC”) through use of equivalent resistance variations in the power distribution system (“PDS”) to mitigate the vulnerability of security keys to threats including cloning, misappropriation and unauthorized use.

主权项

1. A security key generating system for an integrated circuit, comprising:
one or more stimulus-measure circuit; an operational amplifier; a first voltage sense wire; a second voltage sense wire, wherein said first voltage sense wire and said second voltage sense wire are each electrically connected to said one or more stimulus-measure circuit and to said operational amplifier, said operational amplifier configured to output a logic value in order to generate a security key, the logic value determined by a comparison of a first voltage on said first voltage sense wire and a second voltage on said second voltage sense wire.