Apparatuses and methods for implementing various physically unclonable function (PUF) and random number generator capabilities

摘要

Methods and apparatuses for implementing a Physically Unclonable Function (PUF) and random number generator capabilities comprising providing a device under test comprising a plurality of bits comprising integrated circuits each including a capacitor; placing the bits in a first state with charge on selected bit capacitors; stopping bit refresh for a first predetermined time; re-enabling refresh for a second predetermined time to read and refresh charge on all bits; reading all bits and recording addresses of bits that have experienced bit flip from a first state to a second state comprising from “1” to “0” state; performing selecting a plurality of said recorded addresses to generate a PUF or cryptographic key; and performing an operation comprising a test or verification operation with said generated information PUF or key. Various hardware elements are also provided as well as machine readable instructions for implementing and controlling aspects of the invention.