US 12,003,656 B2 · Using intrinsic chip behaviors to generate physically unclonable functions (PUFs) for security key generation

Abstract

Systems, methods and computer-readable mediums may use intrinsic behavior of an integrated circuit (IC) chip to generate Physically Unclonable Function (PUF) vector bits. A processor of the system may be configured to receive a plurality of temperature values corresponding to a plurality of respective temperature measurement values obtained by a plurality of respective temperature sensors disposed on the IC chip. The processor may be further configured to process the temperature measurement values to generate PUF vector bits that can be used to generate a security key.

Claims27

Dependent claims

A system for generating Physically Unclonable Function (PUF) vector bits, the system comprising:

a plurality of temperature sensors, first through nth temperature sensors, S1 through Sn, where n is a positive integer that is greater than or equal to two;
and
a processor disposed on an integrated circuit (IC) chip, the processor being configured to receive a plurality of temperature measurement values from the plurality of temperature sensors, wherein said plurality of temperature measurement values are received from the plurality of temperature sensors and processed by the processor when the IC chip is in a quiescent state, and wherein the processor is further configured to process the received temperature measurement values to generate PUF vector bits.

Dependencies are inferred from the claim text.

Using intrinsic chip behaviors to generate physically unclonable functions (PUFs) for security key generation

Life of this patent

Using intrinsic chip behaviors to generate physically unclonable functions (PUFs) for security key generation

Life of this patent

Abstract

Claims27