公开(公告)号：US10956557B2

公开(公告)日：2021-03-23

申请号：US16067757

申请日：2017-01-11

Applicant: STC.UNM

Inventor： James Plusquellic ,  Wenjie Che ,  Dylan Ismari

IPC: G06F21/44 ,  G06F21/70 ,  G06F21/30 ,  G06F21/73 ,  H04L9/08 ,  H04L9/32 ,  H04L9/06 ,  G06F7/58 ,  G06F21/34

Abstract: An authentication protocol using a Hardware-Embedded Delay PUF (“HELP”), which derives randomness from within-die path delay variations that occur along the paths within a hardware implementation of a cryptographic primitive, for example, the Advanced Encryption Standard (“AES”) algorithm or Secure Hash Algorithm 3 (“SHA-3”). The digitized timing values which represent the path delays are stored in a database on a secure server (verifier) as an alternative to storing PUF response bitstrings thereby enabling the development of an efficient authentication protocol that provides both privacy and mutual authentication.