公开(公告)号：WO2021148242A1

公开(公告)日：2021-07-29

申请号：PCT/EP2021/025020

申请日：2021-01-19

Applicant: UNIVERSITEIT TWENTE (UT)

Inventor： PINKSE, Pepijn ,  VELSINK, Matthijs

IPC: H04L9/08 ,  H04L9/32 ,  G09C5/00 ,  H04L9/0866 ,  H04L9/3278

Abstract: The present invention discloses a method and a system for PUK authenticated communication. The method comprises the following steps: creating an optical challenge (1) in a time- frequency domain; providing the optical challenge (1) to a tPUK (2) for creating a response, the tPUK (2) comprising a spatial input channel (3) and a plurality of spatial output channels (4) and the tPUK (2) comprising a complex challenge-response behavior in the time-frequency domain, wherein the challenge (1) is created such that in the response a short temporally focused pulse (7) is created in only one of the spatial output channels (4) of the tPUK (2); and detecting in which output channel (4) the short temporally focused pulse (7) is created.