INRIA - Institut National de Recherche en Informatique et en Automatique

A system for haptic spatialization introduces the notion of a haptic source, haptic object and haptic listener. A haptic source is a virtual transmitter that is able to provide haptic information. A haptic object is an object with haptic properties based on physical characteristics, to modulate the propagation of a haptic signal through the object. A haptic listener is a virtual sensor that captures haptic information. A haptic engine handles the workflow and interactions between these different elements of the system. More particularly, it determines how a haptic signal is propagated according to the spatial localization and the properties of the elements. Syntax elements describing the elements composing such system allow to create information representative of a scene comprising spatialized haptic effects. Such information can be provided to a rendering device in order to be played back accordingly.

The invention relates to a calculation accelerator (10) adapted to carry out calculations according to a first cryptosystem and a second cryptosystem, the first cryptosystem being a lattice-based cryptosystem and the second cryptosystem being a code-based cryptosystem, the calculation accelerator (10) comprising several calculation modules, each calculation module applying an operation on input signals to obtain an output signal, namely: - a first calculation module (M1) configurable to implement modular addition or carryless addition, - a second calculation module (M2) configurable to implement identity with relation to one of the input signals, modular subtraction, modular addition and carryless addition, - a third calculation module (M3) configurable to implement integer multiplication and carryless multiplication, and - a fourth calculation module (M4) configurable to implement identity with relation to one of the input signals; modular subtraction, modular addition and carryless addition.

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …

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.

Zusammenfassung wird geladen …

Zusammenfassung wird geladen …