Thales Dis France Sa

Thales Dis France Sas

Pascal Leroy

Jean-Paul Caruana

Julien Delsuc

Stéphane Touvet

Frédéric Martinez

Hervé Poirier

A method for accessing a private key is provided. The method includes storing, by a first device, the private key and an associated public key, generating an access token, sending to a second device, the access token, sending, to a first server, an address relating to a decentralized identifier and the access token, sending, by the first server, to a ledger, a request for getting a decentralized identifier along with the decentralized identifier address. By way of the method a solution is provided for accessing, by a first server to be accessed from a second device, based on a decentralized identifier readable from a ledger, a second server, as a proxy to a first device. It allows for authenticating a first device to a first server while keeping the private key only at the first device side (and not at the second device side).

Method, first device, first server, second server and system for accessing a private key

This invention relates to a method for provisioning a wireless control device with an information element allowing to identify visually at least one unauthorized user in a restricted area, the restricted area comprising a gateless control area being equipped with at least an image sensor and an electronic reader supporting a short range radio technology allowing to read data memorized into a wearable device carried by a user. The method comprises the steps of: providing by the image sensor a digital image of at least one user that is detected as passing through the gateless control area; extracting from the provided digital image of the detected user a first face detection dataset; providing by the electronic reader a second face detection dataset memorized in a wearable device carried by said detected user; applying facial recognition over the first and second face detection datasets in order to determine if the user associated to the first face detection dataset is the same as the one associated to the second face detection dataset, the detected user being identified as authorized in that case and identified as unauthorized otherwise; sending to a wireless control device a message comprising an information item adapted to ease the visual identification of an unauthorized user.

Method for provisioning a device with an information element allowing to identify unauthorized users in a restricted area

This invention relates to a method to compensate by a server a clock deviation of a card i by maintaining a time base Tbase (i) synchronized with card i, the method comprising the steps of: receiving at a time TS a dynamic card verification dCVV code value generated by card i; providing a set of at least two dCVV code corresponding to two successive dCVV time periods; if the dCVV code received from card i corresponds to one of the dCVV codes of the provided set but is different from the reference dCVV code, determine the minimum possible timing drift Min_td between the time base maintained by the server for the card and the time base Tbase(i) of the card; updating time base Tbase(i) by addition of a time drift correction equal to the minimum possible time drift Min_td.

Growing community of inventors

Meudon, France

Pascal Leroy