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1. WO2020109569 - SECURE BEACONS

Publication Number WO/2020/109569
Publication Date 04.06.2020
International Application No. PCT/EP2019/083122
International Filing Date 29.11.2019
IPC
H04W 12/06 2009.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
12Security arrangements, e.g. access security or fraud detection; Authentication, e.g. verifying user identity or authorisation; Protecting privacy or anonymity
06Authentication
H04W 4/80 2018.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
4Services specially adapted for wireless communication networks; Facilities therefor
80Services using short range communication, e.g. near-field communication , radio-frequency identification or low energy communication
H04L 9/06 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
9Arrangements for secret or secure communication
06the encryption apparatus using shift registers or memories for blockwise coding, e.g. D.E.S. systems
H04L 9/32 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
9Arrangements for secret or secure communication
32including means for verifying the identity or authority of a user of the system
CPC
H04L 9/0631
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
9Cryptographic mechanisms or cryptographic; arrangements for secret or secure communication
06the encryption apparatus using shift registers or memories for block-wise ; or stream; coding, e.g. DES systems ; or RC4; Hash functions; Pseudorandom sequence generators
0618Block ciphers, i.e. encrypting groups of characters of a plain text message using fixed encryption transformation
0631Substitution permutation network [SPN], i.e. cipher composed of a number of stages or rounds each involving linear and nonlinear transformations, e.g. AES algorithms
H04L 9/3242
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
9Cryptographic mechanisms or cryptographic; arrangements for secret or secure communication
32including means for verifying the identity or authority of a user of the system ; or for message authentication, e.g. authorization, entity authentication, data integrity or data verification, non-repudiation, key authentication or verification of credentials
3236using cryptographic hash functions
3242involving keyed hash functions, e.g. message authentication codes [MACs], CBC-MAC or HMAC
H04W 12/06
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
12Security arrangements, e.g. access security or fraud detection; Authentication, e.g. verifying user identity or authorisation; Protecting privacy or anonymity ; ; Protecting confidentiality; Key management; Integrity; Mobile application security; Using identity modules; Secure pairing of devices; Context aware security; Lawful interception
06Authentication
H04W 4/80
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
4Services specially adapted for wireless communication networks; Facilities therefor
80Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
Applicants
  • NAGRAVISION S.A. [CH]/[CH]
Inventors
  • AUMASSON, Jean-Philippe
Agents
  • HOYNG ROKH MONEGIER LLP
Priority Data
18209059.729.11.2018EP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SECURE BEACONS
(FR) BALISES SÉCURISÉES
Abstract
(EN)
A method for securing a beacon signal in a network comprising a transmitter for broadcasting the beacon signal and one or more receivers for receiving the beacon signal, wherein the beacon signal comprises a data packet (103) including a payload (106) that comprises a first field containing broadcast information from the transmitter and a second field (204) for storing authentication information, the method comprising: computing, using a secret key, a message authentication code over the payload; extracting bytes from the message authentication code to obtain the authentication information; and encrypting the first field using a symmetric cipher which takes as parameter the secret key and a nonce, wherein the nonce comprises the authentication information, the encrypting resulting in an encrypted first field, the resulting secure beacon signal (200) comprising the encrypted first field (203) and the second field (204) with the authentication information.
(FR)
L'invention concerne un procédé de sécurisation d'un signal de balise dans un réseau comprenant un émetteur pour diffuser le signal de balise et un ou plusieurs récepteurs pour recevoir le signal de balise, le signal de balise comprenant un paquet de données (103) comprenant une charge utile (106) qui comprend un premier champ contenant des informations de diffusion provenant de l'émetteur et un second champ (204) pour stocker des informations d'authentification, le procédé consistant à : calculer, à l'aide d'une clé secrète, un code d'authentification de message sur la charge utile; à extraire des octets du code d'authentification de message afin d'obtenir les informations d'authentification; et à chiffrer le premier champ à l'aide d'un chiffre symétrique qui prend comme paramètre la clé secrète et un nonce, le nonce comprenant les informations d'authentification, le chiffrement conduisant à un premier champ chiffré, le signal de balise sécurisé résultant (200) comprenant le premier champ chiffré (203) et le second champ (204) avec les informations d'authentification.
Also published as
Latest bibliographic data on file with the International Bureau