Abstract: A method for parameterising a device for performing banking operations in which biometric data of the holder of the device for performing banking operations are used to authenticate the user of the device. The present invention: activates a plurality of commands using identifiers of a standard relating to banking transactions available for effecting commands not predefined by the standard; creates, from an identifier of the standard relating to banking transactions available for effecting commands not predefined by the standard, in the device for performing banking operations, a container able to store reference biometric data of a user of the device for performing banking operations; and stores reference biometric data, using an identifier of the standard relating to banking transactions available for effecting commands not predefined by the standard, in the container of reference biometric data of the user of the device for performing banking operations.

Abstract: A method and an associated device for detecting fraud during automatic face recognition, the method comprising the following steps: acquiring a first image of the face by means of a first sensor having a first field angle, and a second image of the face by means of a second sensor having a second field angle that is narrower than the first field angle; analyzing the first image to verify that there is no frame around the face; and analyzing the second image to verify that there is no moiré effect.

Abstract: A method for checking a confidence level associated with a first user account of an online service, each user account including associated user data and contact means, the method includes the steps of selecting at least one second user account, generating a first code, recording the first code in association with the first user account, sending a first message via a contact means associated with the second user account, the first message including the first code generated and, in subsequent steps, of receiving, from a first electronic device connected to the online service with the first user account, a second message including a second code and, when the second code is equal to the first code recorded in association with the first user account, then increasing the value of the parameter indicating the confidence level associated with the first user account of the online service.

Abstract: Provided is a method for optimising memory writing in a device implementing a cryptography module and a client module calling functions implemented by the cryptography module. The device includes a random access memory including a first memory zone that is secured and dedicated to the cryptography module and a second memory zone dedicated to the client module. When the client module calls a series of functions implemented by the cryptography module including a first function and at least one second function, with each second function executed following the first function or from a further second function and providing a runtime result added to a runtime result of the preceding series function, each runtime result is added to a value contained in a buffer memory allocated in the first memory. The buffer memory value is copied to the second memory zone following the execution of the last function of the series.

Abstract: The invention proposes a method comprising the evaluation of a function F obtained by applying to n sub-functions fi a first operation, the evaluation comprising: the application of a series of calculation steps in which a first unit assumes a role of a client and a second unit assumes a role of a server, and the repetition of the series of calculation steps in which the roles of client and of server are exchanged between the units, each series of steps comprising: a) randomly generating, by the server, first data, and a second datum, b) for each sub-function fi, generating by the server a set of elements formed by: a result of fi evaluated in the data of the client and of the server, masked by a first datum, by applying the first operation between the result and the first datum, and masked by the second datum, by applying between the masked result and the second datum of a second operation different from the first and distributed relatively to the latter, c) recovering by oblivious transfer, by the

Abstract: The invention relates to a method for securing a document including a visual element, carried out by a processing unit comprising processing means, the method comprising generation, from the visual element, of a reference security datum, and storage of the reference security datum, wherein the reference security datum is generated by means of an algorithm configured so as to generate: for any image acquired from the visual element, a security datum whereof the differences relative to the reference security datum are less than a determined threshold, and for any image acquired on a different visual element, a security datum whereof the differences relative to the reference security datum are greater than said threshold.

Abstract: A method for determining an apparent color value of pixels corresponding to a subpart of an object in the acquired image, including: estimating a geometric distortion model of the object in the acquired image compared with a reference model of the object; determining a position in the acquired image of the subpart and determining a zone of the acquired image, referred to as the reference zone, situated in a predetermined vicinity of the subpart, each pixel of the reference zone resulting from a projection in the acquired image of a zone of the reference model, referred to as a blank zone, the blank zone being associated with a predetermined color value in the reference model, the projection using the geometric distortion model; and determining an apparent color value of the pixels of the subpart, from a color value of at least one pixel of the reference zone.

Abstract: A method for calibrating an ionizing radiation detector, with the aim of determining a correction factor in order to establish an amplitude-energy correspondence The invention first relates to a method for calibrating a device for detecting ionizing radiation, the detector comprising a semiconductor or scintillator detection material capable of generating a signal S of amplitude A upon interaction between ionizing radiation and the detection material, the method including the determination of a weighting factor of amplitude A.

Abstract: The invention relates to a print sensor (160) comprising, on a transparent support substrate, a plurality of elementary acquisition cells (161), each cell comprising a photodetector (PS), a pyroelectric conversion element (PYR), and at least one TFT transistor (RT, SF) connected to both the photodetector (PS) and the pyroelectric conversion element (PYR).

Abstract: The invention proposes a method for controls on persons in possession of a document comprising a machine-readable zone containing a document number and an electronic chip in which an authentication biometric is stored, comprising: at a first step (100), acquiring (120) a biometric datum, acquiring (110) the document number by reading the machine-readable zone, and recording (130), in a memory (20), the number linked with the biometric datum, and at a second step (200), acquiring (210) a biometric, from said biometric datum retrieving (220), in the memory, the number of the identity document corresponding to the person, accessing the content of the chip and retrieving the authentication biometric datum (240), and performing authentication (250) of the person by comparing the authentication biometric datum with a biometric datum of the person.

Abstract: 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.

Abstract: A method of capturing a thermal pattern by a sensor comprising a matrix of several rows and columns of pixels and a plurality of heating elements each associated with a pixel or a group of pixels, and capable of heating a heat sensitive measurement element for measurement of the pixel or each pixel in the group of pixels independently of the other heating elements during reading of the pixel or at least one of the pixels in the group of pixels, in which, when a first pixel or a first group of pixels in the matrix is read, the heat sensitive measurement element of this first pixel or first group of pixels is heated by the heating element associated with this first pixel or first group of pixels, and the heat sensitive measurement element of another pixel called second pixel, or of a second group of pixels, in the matrix is heated by at least one other heating element associated with this second pixel or second group of pixels.

Abstract: Thermal pattern sensor comprising a matrix of several lines and columns of pixels, each pixel comprising at least one pyroelectric capacitance formed by at least one portion of pyroelectric material arranged between a lower electrode and an upper electrode, wherein a first of the lower and upper electrodes forms an electrode for reading the pixel, and moreover comprising a plurality of electrically conductive portions each capable of Joule effect heating, independently of the other electrically conductive portions, of the portions of pyroelectric material of the pyroelectric capacitances of the pixels of at least two adjacent lines of pixels associated with the electrically conductive portion, and arranged facing at least a part of the surface of the reading electrodes of each of the pixels of the lines associated with the electrically conductive portion.

Abstract: A surveillance method for a mobile telecommunications terminal having an eSIM card. A plurality of subscription profiles are stored in the eSIM card. The surveillance method includes steps of incrementing a counter each time a change of subscription profile order is received, determining a number of change of subscription profile orders received during a predetermined duration, and, if the number of change of subscription profile orders received during the predetermined duration is greater than a predetermined threshold, deducing therefrom that operation is suspect.

Abstract: A method for characterizing material in which a surface is formed, by analysis of speckles generated on the surface by a coherent light beam by performing the computation of an autocorrelation function of the light intensity on the image and computation of the value of at least one criterion set up from said function, setting up an autocorrelation matrix of the light intensity of the image, computation of the discrete cosine transform of said matrix, and computation of the value of a characterization criterion such as the average on the image of the matrix trace obtained by the discrete cosine transform of the autocorrelation matrix, and computation of the value of at least one representative criterion of a phase shift distribution of the light beams diffused by the surface, said computation comprising computation of a wavelet transform of the image, and computation of the value of at least one criterion from the following group: average of the phases of the wavelet coefficients on the image, or standard devi

Abstract: Provided is a method for optimising memory writing in a device implementing a cryptography module and a client module calling functions implemented by the cryptography module. The device includes a random access memory including a first memory zone that is secured and dedicated to the cryptography module and a second memory zone dedicated to the client module. When the client module calls a series of functions implemented by the cryptography module including a first function and at least one second function, with each second function executed following the first function or from a further second function and providing a runtime result added to a runtime result of the preceding series function, each runtime result is added to a value contained in a buffer memory allocated in the first memory. The buffer memory value is copied to the second memory zone following the execution of the last function of the series.

Abstract: A method for determining an apparent colour value of pixels corresponding to a subpart of an object in the acquired image, including: estimating a geometric distortion model of the object in the acquired image compared with a reference model of the object; determining a position in the acquired image of the subpart and determining a zone of the acquired image, referred to as the reference zone, situated in a predetermined vicinity of the subpart, each pixel of the reference zone resulting from a projection in the acquired image of a zone of the reference model, referred to as a blank zone, the blank zone being associated with a predetermined colour value in the reference model, the projection using the geometric distortion model; and determining an apparent colour value of the pixels of the subpart, from a colour value of at least one pixel of the reference zone.

Abstract: A method for parameterising a device for performing banking operations in which biometric data of the holder of the device for performing banking operations are used to authenticate the user of the device. The present invention: activates a plurality of commands using identifiers of a standard relating to banking transactions available for effecting commands not predefined by the standard; creates, from an identifier of the standard relating to banking transactions available for effecting commands not predefined by the standard, in the device for performing banking operations, a container able to store reference biometric data of a user of the device for performing banking operations; and stores reference biometric data, using an identifier of the standard relating to banking transactions available for effecting commands not predefined by the standard, in the container of reference biometric data of the user of the device for performing banking operations.

Abstract: A method for checking a confidence level associated with a first user account of an online service, each user account including associated user data and contact means, the method includes the steps of selecting at least one second user account, generating a first code, recording the first code in association with the first user account, sending a first message via a contact means associated with the second user account, the first message including the first code generated and, in subsequent steps, of receiving, from a first electronic device connected to the online service with the first user account, a second message including a second code and, when the second code is equal to the first code recorded in association with the first user account, then increasing the value of the parameter indicating the confidence level associated with the first user account of the online service.

Abstract: The present invention relates to a method for extracting morphological characteristics from a sample of biological material, in particular fingerprints, especially internal or external fingerprints, using an optical coherence tomography acquiring system delivering a signal representative of the sample, in which method an image containing intensity data and an image containing phase data are formed from at least the signal delivered by the acquiring system and representative of the sample, in order to extract the morphological characteristics from the sample.