Abstract: Disclosed is a method for administering a communication channel between two host components of a mobile NFC device. The method includes a step of updating the whitelist of a first host component, then a step of notifying the update to a second authorised host component. The notifying step informs the second host component of the status of the whitelist of the first host component in order to prevent the transmission of requests to create a communication channel which would then be rejected. Also disclosed is a mobile NFC device.

Abstract: A checking device and method performed by a microcircuit for dependency rules for objects updated in the microcircuit. The device and method include steps for receiving (B3) a command for updating a first object (105) stored in the microcircuit, the command giving an updated value for the first object; and verifying (B4, B4?) an updating rule (106) for the first object while taking account of the updated value for the first object. The device and method can be used in microcircuits that carry out transactions.

Abstract: A method for obtaining an image of at least one fingerprint from a sequence of images is disclosed. The method comprises a segmentation of images in a sequence of acquired images making it possible to determine regions liable to comprise a fingerprint, a tracking of regions determined along with the sequence of images and a calculation of a confidence mark for each region determined. The confidence mark of a region determined is incremented (or respectively decremented) at each acquired image if the region is present in (or respectively absent from) the image, the increment (or respectively the decrement) being dependent on the predefined image acquisition frequency. Information making it possible to obtain a final image containing fingerprints is generated by the method when a predefined number of regions each having reached a confidence mark at least equal to a predetermined threshold is obtained.

Abstract: Method for detecting the presence of a body part carrying an imprint on an imprint sensor comprising a transparent face on which a body part must be placed, an image sensor, situated opposite the transparent face, able to acquire an image of an imprint, a light source for illuminating a body part placed on the transparent face. The method comprises: switching on the light source; acquiring a multicomponent image with the image sensor, each color component of the multicomponent sensor corresponding to a predefined wavelength range; obtaining, for each color component of said multicomponent image, information representing a signal generated by said image sensor for said color component; comparing said representative items of information with each other and detecting the presence of a body part according to the result of the comparison.

Abstract: Notification devices and methods for configuring a secure element incorporated into a terminal connected to a network are disclosed. The devices and methods may perform steps implemented by an application of the secure element, such as obtaining at least one item of information that can be used to configure the secure element stored in a memory of the terminal outside the secure element, sending the item of information and an identifier of the secure element to a configuration system, and obtaining configuration data originating from the configuration system, the configuration data being supplied to the secure element depending on the item of information.

Abstract: The invention relates to a manufacturing process of a pixel array of a thermal pattern sensor comprising the steps of: providing a substrate; depositing a first layer of electrically conductive material, including depositing electrically conductive tracks, depositing of connector pins and depositing a ground strip; depositing of second layer of pyroelectric material covering the tracks and leaving at least part of the connector pins free; depositing of third layer of electrically conductive material; depositing of fourth layer of dielectric material in contact with the third layer; depositing of a fifth layer including electrically conductive heating tracks; depositing of a sixth protective layer, wherein the step of depositing the second and/or third and/or fourth and/or sixth layer is carried out by slot-die coating.

Abstract: The invention relates to a method for controlling a transaction carried out between an electronic device comprising a secure memory and an external terminal by monitoring usage patterns of the electronic device, wherein a first and a second item of usage information are read when the transaction is carried out; a first list of data pairs is recorded on the secure memory, each of said pairs comprising the first and second (IU2) items of usage information; a second list of counters is recorded on the secure memory; an indicator for monitoring usage patterns of the electronic device is calculated on the basis of the first item of usage information, the second item of usage information, and/or a counter from the second list.

Abstract: 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: (a) Drawing a pair formed by a first internal state (s1i) and a white-box implementation (WBi) of a modular arithmetic operation, from among a set of predetermined pairs ({(s1i,WBi)}i?[0,n-1]) each for one nonce (ki), said first internal state (s1i) being a function of the nonce (ki) and said modular arithmetic operation being a function of the first internal state (s1i), of the nonce (ki) and of the secret key (x); (b) Determining a second internal state (s2i) by application of said drawn white-box implementation (WBi) to a condensate of the document obtained via a given hash function; (c) Generating an electronic signature of the document from the first internal state (s1i) of the drawn pair and from the second determined internal state (s2i), and deleting the drawn pair of said set of pairs ({(s1i,WBi)}i?[0

Abstract: A method of sharing of a reference key (AppKey) between a connected object and at least one server. The method includes the object applying a function (f) to at least one datum (DevEUI, AppEUI, DevNonce) and to a key (KSE) specific to a secure element of the object to generate the reference key, transmitting to the server a join request of the object to a network of connected objects, which include the datum, and the key (KSE) of the secure element not being transmitted to the server. The method further includes obtaining, by the server, of the key (KSE) of the secure element on the basis of the request, the server applying the function (f) to the datum and to the key (KSE) obtained by the server, so as to obtain the reference key.

Abstract: A method for detecting a document fraud is disclosed. A first image of a first document and a second image of a second document are obtained. A procedure of detection of zones sensitive to document frauds are applied in the regions of the first image and of the second image registered on the first image. Each sensitive zone detected is then divided into a plurality of subparts. A measurement of dissimilarity is calculated between corresponding subparts from the first image and the registered second image. It is then determined whether the first document is identical to the second document from measurements of dissimilarity. If the first document is different from the second document, a level of difference is determined between the first and second documents according to a value representing a proportion of different subparts; and a fraud is detected when the level of difference is below a third predetermined threshold.

Abstract: Disclosed is an electronic device including: a body; a module enclosed in the body; a microcircuit and a direct current source, both forming part of the body; and an electronic component forming part of the module and accessible from the exterior, the electronic component being electrically connected to the microcircuit and having to be supplied with direct current from the direct current source. The body includes a first antenna connected to the direct current source via an oscillator and the module includes a second antenna connected to the electronic component via a rectifier circuit, the first and second antennas being electromagnetically coupled, providing a wireless radio frequency power supply to the electronic component of the module from the direct current source of the body.

Abstract: Disclosed is a method for recording a reference biometric data item in a biometric smart card including a biometric sensor. The recording of a biometric data item acquired by the biometric sensor, as a reference biometric data item, is completed in response to the validation, by the biometric smart card, of a personal secret code of the biometric smart card user entered on a first external device to authorise a transaction between the biometric smart card and a second external device by way of the first external device.

Abstract: Method for capturing a heat pattern with a sensor including a plurality of pixels each comprising a heat-sensitive measuring element, the sensor comprising an element for heating the measuring element, the method including carrying out the following steps for each pixel: a first heating step in which a first amount of heating power is dissipated in the measuring element; a first step of measuring the heat pattern, comprising a first read-out of the heat-sensitive measuring element, after a first delay time; a second heating step in which a second amount of heating power is dissipated in the measuring element; a second step of measuring the heat pattern, comprising a second read-out after a second delay time; and wherein the first amount of power is different from the second amount of power and/or the length of the first delay time is different from that of the second delay time.

Abstract: An authentication method performed by an authentication server (ACS). The method includes receiving from an access server (SW) giving access to a service (S), an authentication request including transaction data (DT) associated with an IC card; determining whether a security code included in the transaction data is of the DCVV type; and if so, detecting that no 3D secure (3DS) authentication is to be performed and co-operating with a verification server (SV) in order to verify the validity of the DCVV security code.

Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for applying a ghost image to an identification document that include the actions of obtaining a first image of an object. Identifying a first portion of the first image that corresponds with the object and a second portion of the first image that does not correspond with the object. Generating a second image by converting the first image to a negative image, and removing the second portion of the first image that does not correspond to the object. Generating a halftone image from the second image. Causing optically variable media to be applied to the identification document based on the halftone image. The optically variable media has a first appearance when viewed from in reflected light at a first angle and a second, different appearance when viewed in reflected light at a second, different angle.

Abstract: A secure element (30) has a local store of file property data (50). A method of preparing a script to send to the secure element (30) to remotely provision a profile (31) at the secure element includes preparing the script such that the script lacks a command to create a file if the local store of file property data (50) at the secure element includes file property data which can be used to locally create that file. A script may include an entry of reduced length which refers to the file to be locally created, such as a SELECT FILE command and an identifier of the file.

Abstract: Method for capturing a thermal pattern by a sensor comprising a plurality of pixels each comprising a heat-sensitive measuring element, the method comprising, for each pixel: heating the measuring element; first reading of the electrical charges outputted by the pixel during a first measurement duration and giving a first measurement value x1; second reading of the electrical charges outputted by the pixel during a second measurement duration and giving a second measurement value x2; calculating a difference x1??·x2, where ? is a positive real number, and wherein more than half of the heating duration is implemented during the first measurement duration and less than half of the heating duration is implemented during the second measurement duration.

Abstract: The invention relates to a pixel matrix of a thermal pattern sensor comprising several rows and several columns of pixels, said matrix comprising: an active thermal element formed by a thermosensitive material disposed between a lower layer and an upper layer, the lower layer being constituted by a plurality of first tracks made of electrically conductive material and extending along a first direction, said first tracks forming pixel columns; a heating element, disposed on the active thermal element and forming a serpentine path, said heating element being constituted by a plurality of second tracks (L1, L2, L3, L4, L5, L6) made of electrically conductive material and connecting segments (w1, w2, w3, w4, w5, w6) made of electrically conductive material connected to the ends of the second tracks (L1, L2, L3, L4, L5, L6), said second tracks (L1, L2, L3, L4, L5, L6) extending in a second direction different from the first direction and forming lines of pixels, the second tracks being connected except for the

Abstract: A method for detecting images of fraudulently generated or photocopied secure credential documents using texture analysis includes receiving, by one or more processors, an image of a secure credential document from a computer device. The one or more processors segment the image of the secure credential document into multiple regions. For each region of the multiple regions, the one or more processors extract local high-resolution texture features from the image of the secure credential document. The one or more processors generate a score based on the local high-resolution texture features using a machine learning model. The score is indicative of a likelihood that the image of the secure credential document is fraudulently generated or photocopied. The one or more processors transmit a message to a display device indicating that the image of the secure credential document is fraudulently generated or photocopied.

Abstract: A method for encrypting or decrypting a n-tuple of data ({ai}i?[[0,n-1]]) with a n-tuple of secret keys ({ki}i?[[0,n-1]]). The method uses a data-processor to perform the steps of: (a) for each element (ai), determining m>n first internal states ({yij}j?[[0,m-1]]) by application of m first operations, each: represented by a table (Tij), and defined as the combination of a single bijective internal encoding (Gij), of a non-linear sharing function (Di, Ei, Fi . . . ), and of a given non-linear permutation function (ƒ) parameterized with the secret key (ki), and (b) for each n-tuple of first internal states ({yij}i?[[0,n-1]]), determining a second internal state (zj) by application of a second operation: represented by a table (TLj), and defined as the combination of a second single bijective internal encoding (GLj), a linear multiplexing function (L), and the inverses of the first bijective internal encodings (Gij).