Morpho

Idemia Identity & Security France

Idemia Identity & Security

Safran Identity & Security

Herve Chabanne

Julien Bringer

Alain Patey

Constance Morel

Julien Paul Keuffer

Emmanuel Prouff

Jean-Christophe Fondeur

Rodolphe Hugel

Roch Lescuyer

Olivier Clemot

Thomas Icart

Vincent Despiegel

Anouar Mellakh

Olivier Cipiere

Victor Servant

Martin Cottard

Cedric Thuillier

Bernard Didier

Jonathan Milgram

Stephane Gentric

Roch Olivier Lescuyer De Chaptal-Lamure

Thanh Ha Le

Melanie Favre

Sebastien Bahloul

Eduardo Soria-Vazquez

Alexandre Martins

Erik Van Dijk

Laurent Lambert

Thomas Chenevier

The present invention concerns a method for learning the parameters of a convolutional neural network, CNN, for data classification, the method comprising the implementation of steps by data processing means () of at least one server (), of:

Methods for learning the parameters of a convolutional neural network, and for classifying an input datum

The present invention relates to a method for learning parameters of a convolutional neural network, CNN, for data classification, the method comprising the implementation, by means for processing data () of a server (), of steps consisting of: The present invention also relates to a method for classifying an input datum.

Methods for learning parameters of a convolutional neural network, and classifying an input datum

The present invention comprises an enrolment method comprising steps of: acquisition () of an image showing a photograph itself showing an individual, extraction (), from the image of a characteristic of the image other than a biometric model, obtaining () personal data of the individual other than by the image-processing algorithm, generation () of a reference datum (W) from the characteristic of the image and the obtained personal data, calculation () of an encoded datum (s) by application of an encoding procedure to the reference datum (W) and to a random datum (c), calculation () of a hash (h(c) of the random datum, storage () in a database of the datum encoded (s) in association with the hash. The invention also comprises an identity-control method using such stored data.

Method of enrolling data to control an identity, and identity-control method

A method for digital signing of a document using a predetermined secret key. An initial internal state is determined by application to a condensate of the document of a first white box implementation of generation of a main nonce; then a modular sum of the main nonce and of a predetermined constant. The method also determines a first internal state by application to the initial internal state of a first modular arithmetic operation, then of a modular product with exponentiation of the predetermined constant. The method then determines a second internal state by application to said condensate of a second white box implementation of generation of the main nonce; and a second modular arithmetic operation function of the first internal state, of the main signature nonce and of the secret key. It then generates a digital signature of the document from the first internal state and the second internal state.

Process for digital signing of a document with a predetermined secret key

A method for processing biometric data performed by a proof entity and a verification entity; the proof entity having a biometric candidate datum, a biometric reference datum, a hash value of the biometric reference datum, a hash value of the biometric candidate datum; the verification entity having only the hash value of the biometric candidate datum; the method including steps of: generation by a data-processing unit of the proof entity of a zero-knowledge proof of the assumption that the biometric candidate datum and the biometric reference datum coincide; transmission to the verification entity of said zero-knowledge proof, the hash value of the biometric candidate datum, and the hash value of the biometric reference datum; verification by a data-processing unit of the verification entity that the zero-knowledge proof is valid, and that the hash value received from the biometric candidate datum corresponds to the one the verification entity has.

Verification method of biometric authentication

The present invention relates to a method for processing an image executed by a terminal (), comprising steps of receiving a proof datum previously input by a user of the terminal (), setting () of at least one parameter to a first value when the proof datum is equal to a secret reference datum, and to a second value different to the first value when the proof datum is different to the secret reference datum, and generation () of an output datum from an input datum being or dependent on an image previously acquired by a sensor (), and also from the parameter, the output datum having a value as function of the value the parameter has been set to.

Method for processing an image executed by a terminal forming a 'white box' environment

A method for secure learning of parameters of a convolution neural network, CNN, for data classification includes the implementation, by data processing of a first server, including receiving from a second server a base of already classified learning data, the learning data being homomorphically encrypted; learning in the encrypted domain, from the learning database, the parameters of a reference CNN including a non-linear layer (POLYNOMIAL) operating an at least two-degree polynomial function approximating an activation function; a batch normalization layer before each non-linear layer (POLYNOMIAL); and transmitting the learnt parameters to the second server, for decryption and use for classification.

Methods for secure learning of parameters of a convolution neural network, and for secure input data classification

The present invention relates to a method for electronic signing of a document with a predetermined secret key (x), the method being characterized in that it comprises the implementation of steps of:

Method for electronic signing of a document with a predetermined secret key

The invention relates to a method for generating a cryptographic key for applying an access control method to a resource of a server () by a client-terminal (), the method comprising the following steps:

Method for generating a key and access control method

The present invention relates to a method for controlling the identity of a user (U), comprising the following steps implemented by an identity-controlling device (): The public database is of blockchain type and the confidentiality-protected data generated by the identity-attesting device () are associated in the public database () with first transaction data indicating that the identity-attesting device () has transferred a predetermined amount of electronic currency to a recipient.

Method for controlling the identity of a user by means of a blockchain

The present invention relates to a method for generating an electronic signature of a document associated with a condensate obtained by a given hash function comprising performing by data-processing means () of a server () of steps of:

Method for generating an electronic signature of a document associated with a condensate

The invention proposes a verification process of an access right of an individual comprising conducting the following steps before the individual presents themselves at a control point, of:

Process for verification of an access right of an individual

The invention proposes a method for processing biometric data, comprising verification of the result of a calculation of distance between a biometric candidate datum and at least one biometric reference datum, each comprising a number n of indexed components (a, b), said calculation of distance comprising that of a polynomial of the components of the biometric data, the method being executed by a proving entity and a verification entity, the method comprising steps during which: 

Verification process of authentication or biometric identification

The present invention concerns a method for redacting an original document consisting of a matrix of pixels each defined by a vector having at least one numerical value, the method comprising implementation by data processing means () of equipment (), of steps of: The present invention also concerns a method for verifying the authenticity of a final document.

Methods for redacting an original document or verifying the authenticity of a final document

The invention proposes a method comprising the evaluation of a function F obtained by applying to n sub-functions fa first operation, the evaluation comprising:

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Issy les Moulineaux, France

Herve Chabanne