Thales

Oberthur Technologies

Jean Martinelli

François Delaveau

Emmanuel Prouff

Eric Garrido

François Capman

Philippe Painchault

Sandra Marcello

Guillaume Fumaroli

Sylvain Lachartre

Mathieu Rivain

Sonia Belaid

Christiane Kameni

A method of executing an algorithm includes protecting an electronic device by affine masking. The electronic device executes operations on secret variables x, the secret variables x being binary vectors of a given size N other than zero. The method further includes replacing the secret variables x using an affine masking operation, by the following affine function: m(x)=R.x+r, where R is a random invertible binary matrix with N rows and N columns and r is a random binary vector of size N.

Method of executing an algorithm for protecting an electronic device by affine masking and associated device

System and process for audio authentication of an individual or speaker including a processor for decomposing an audio signal received at the sensor into vectors representative of the speaker to be authenticated for transforming the super-vector V of the speaker resulting from the concatenation of the vectors associated with the said speaker into binary data 1001100 . . . 0 taking as an input the mean super-vector M resulting from the mean super-vector, and comparing the super-vector V of the speaker with the mean super-vector M, the said binary data thus obtained being transmitted to a module for extracting the speaker authentication taking as an input the public keys Kpub(l) in order to authenticate the speaker and/or to generate a cryptographic key associated with the speaker.

Method and system to authenticate a user and/or generate cryptographic data

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Paris, France

Jean Martinelli