公开(公告)号：US20230412401A1

公开(公告)日：2023-12-21

申请号：US18251477

申请日：2021-10-29

Applicant: BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY

Inventor： Catherine WHITE ,  Samuel CATER

IPC: H04L9/32 ,  G01N21/45 ,  G01N21/95

CPC classification number: H04L9/3278 ,  H04L2209/12 ,  G01N21/9515 ,  G01N21/45

Abstract: An authentication method using a plurality of physical unclonable functions (PUFs). The plurality of PUFs includes a first PUF associated with a first device and a second PUF associated with a second device. A surface pattern of the first PUF corresponds to a surface pattern of the second PUF. The method includes obtaining a first response to a challenge using the first PUF, sending a request to the second device for a second response to the challenge obtained used the second PUF, receiving the second response, and determining whether the second device is authenticated based on a comparison between the first response and the second response.