Verbessertes Computerimplementiertes Verfahren zur Anonymen Annäherungsverfolgung

Details

Veröffentlichungs-Nr.

EP3907928

Aktenzeichen

EP20305453

Anmeldetag

6. Mai 2020

Veröffentlichung

27. August 2025

Erteilung

27. August 2025

Rechtsraum

EP

IPC

H04L9/08H04W12/00

Abstract

A computer implemented method for anonymous proximity tracing comprising:a) providing a plurality of participating devices (2) being capable of wireless communication, each having a non-interactive key exchange protocol interface which includes a private key generator and non-interactive key exchange protocol parameters;b) periodically using the private key generator in each of said participating devices to obtain respective current private keys, computing a respective current public key in each of said participating device based on said respective current private key and said non-interactive key exchange protocol parameters, and periodically and wirelessly broadcasting said respective current public key by each said participating device;c) upon detection by a first participating device of a respective current public key broadcast by a second participating device, at each of said first participating device and second participating device:i. computing a current shared secret defined by the non-interactive key exchange protocol parameters and respective current private keys of said first participating device and said second participating device,ii. computing at least one token using a pseudo-random function parametrized with said current shared secret and applied on a bucket value, andd) selectively uploading at least some of said first token computed by a given participating device to a reporting server (4) upon detection of an uploading condition by said given participating device.

Anmelder

Firmen

INRIA - Institut National de Recherche en Informatique et en Automatique
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (C.N.R.S.)

Land

🇫🇷 Frankreich

Fachgebiete