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1. WO2020114860 - REMOTE ENFORCEMENT OF DEVICE MEMORY

Publication Number WO/2020/114860
Publication Date 11.06.2020
International Application No. PCT/EP2019/082737
International Filing Date 27.11.2019
IPC
G06F 21/74 2013.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
21Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
70Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
71to assure secure computing or processing of information
74operating in dual or compartmented mode, i.e. at least one secure mode
G06F 21/78 2013.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
FELECTRIC DIGITAL DATA PROCESSING
21Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
70Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
78to assure secure storage of data
CPC
G06F 21/74
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
21Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
70Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
71to assure secure computing or processing of information
74operating in dual or compartmented mode, i.e. at least one secure mode
G06F 21/78
GPHYSICS
06COMPUTING; CALCULATING; COUNTING
FELECTRIC DIGITAL DATA PROCESSING
21Security arrangements for protecting computers, components thereof, programs or data against unauthorised activity
70Protecting specific internal or peripheral components, in which the protection of a component leads to protection of the entire computer
78to assure secure storage of data
Applicants
  • NAGRAVISION S.A. [CH]/[CH]
Inventors
  • GREMAUD, Fabien
  • FUCHS, Pascal
  • VILLEGAS, Karine
  • PERRINE, Jérôme
  • HAUTIER, Roan
Agents
  • HOYNG ROKH MONEGIER LLP
Priority Data
18209906.903.12.2018EP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) REMOTE ENFORCEMENT OF DEVICE MEMORY
(FR) APPLICATION À DISTANCE DE MÉMOIRE DE DISPOSITIF
Abstract
(EN)
A method for anti-replay protection of a memory of a device, wherein the memory is used by and external to a secure element of the device, the method comprising the following steps, wherein the steps are performed in the device after a content of the memory is modified: generating device state data indicative of a state of the content of the memory; transmitting the device state data to a remote system for updating an authentication key of the device stored in a data storage of the remote system and for use by the remote system in an authentication procedure; and providing authentication information based on the device state data from the secure element to the remote system in the authentication procedure between the device and the remote system to verify a validity of the content of the memory.
(FR)
L'invention concerne un procédé de protection anti-réexécution d'une mémoire d'un dispositif, la mémoire étant utilisée par et extérieure à un élément sécurisé du dispositif, le procédé comportant les étapes suivantes, les étapes étant réalisées dans le dispositif après qu'un contenu de la mémoire a été modifié: générer des données d'état de dispositif indicatives d'un état du contenu de la mémoire; transmettre les données d'état de dispositif à un système distant pour mettre à jour une clé d'authentification du dispositif stockée dans un stockage de données du système distant et destinée à être utilisée par le système distant dans une procédure d'authentification; et fournir des informations d'authentification basées sur les données d'état de dispositif, de l'élément sécurisé au système distant, lors de la procédure d'authentification entre le dispositif et le système distant pour confirmer une validité du contenu de la mémoire.
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