Abstract: A method and system for generating and verifying a digital signature, the method and system comprising sharing, between a signing node and a verifying node, a message in which the signing node is to issue a digital signature, performing, by the signing node, a first number of operations to generate the digital signature featuring a redundancy, generating, by the signing node, a shortened digital signature. The transforming of the digital signature to the shortened digital signature includes omitting the redundancy, transmitting, by the signing node to the verifying node, the shortened digital signature. The verifying node is configured to perform a second number of operations to recover the redundancy and generate the digital signature from the shortened digital signature, and verifying, by the verifying node, the digital signature with respect to the message.

Abstract: A transaction method for a user using a first and a second terminal and connected to a server via a first and a second communication channel, respectively. The first terminal sends a transaction amount to the server. The server establishes a verification code whose length depends on the transaction amount, then sends a request to the first terminal and the verification code to the second terminal. The user returns the request filled in with a copied code to the server using the first terminal. The server compares the verification code with the copied code and sends a transaction validation or invalidation message to the first terminal depending on the comparison.

Abstract: A method for controlling the display of information on a screen of a data-input electronic device. The electronic device is intended to be used for implementing an operation involving the performance of a succession of actions and involving a plurality of users. According to the proposed technique, the method includes: detecting a predetermined event associated with the electronic device, delivering a signal that is representative of a detection of the predetermined event; rotating the display of information on the screen of the electronic device through 180°, as a function of the signal representative of detecting the predetermined event and a piece of state information associated with the electronic device.

Abstract: A cable having a first connector electrically coupled to the first end of the cable, where the first connector includes a first energy storage device and a first cryptography processor, and a second connector electrically coupled to the second end of the cable. The second connector includes a second energy storage device and a second cryptography processor. The first energy storage device is configured to power the first cryptography processor for encrypting transmission data transmitted through the first connector over the cable to the second connector, and for decrypting reception data received by the first connector over the cable from the second connector. The second energy storage device is configured to power the second cryptography processor for encrypting transmission data transmitted through the second connector over the cable to the first connector, and for decrypting reception data received by the second connector over the cable from the first connector.

Abstract: A method for controlling the display of information on a screen of a data-input electronic device. The electronic device is intended to be used for implementing an operation involving the performance of a succession of actions and involving a plurality of users. According to the proposed technique, the method includes: detecting a predetermined event associated with the electronic device, delivering a signal that is representative of a detection of the predetermined event; rotating the display of information on the screen of the electronic device through 180°, as a function of the signal representative of detecting the predetermined event and a piece of state information associated with the electronic device.

Abstract: A method for processing data insertion and/or modification requests, which is implemented by an electronic processing device including a communication interface to receive the requests from a communication network. The method includes distributing data, within a plurality of buffers. Each buffer is associated with a record of a database. The association is made via a database record identifier present within the received insertion and/or modification requests. The data is inserted in the form of buffer records, including a value to be updated in and/or inserted into the database. The method also includes allocating data within the records of the database, from the buffers of the plurality of buffers. The allocation phase includes, for the buffer records that include an operational marking, executing, from a configuration file, a computer program specifically dedicated to the record and/or specifically dedicated to the data type of the value to be updated and/or inserted.

Abstract: A method for encrypting a piece of payment means data is disclosed. This method is implemented by a payment means having a data processor. Such a method has at least one iteration of the following steps: obtaining a current piece of payment means data from a memory of the payment means; generating a following piece of payment means data as a function of the current piece of payment means data and as a function of an encryption key of the payment means; replacing the current piece of payment means data by the following piece of payment means data within the memory of the payment means.

Abstract: A method of auto-detection of attempted piracy of an electronic payment card. The method includes the following acts implemented by the card: detection of a sequence of suspect operations implemented in interaction with the card, and storing in the card a corresponding suspect status; interaction of the card with a distinct entity and authentication, by the card, of the distinct entity; and communication, by the card, of the stored suspect status to the authenticated distinct entity.

Abstract: This document describes a system and method for a device to communicate efficiently and securely with another device by utilizing two different types of schemes for the generation of data to be transmitted and the handling of received data.

Abstract: A method for controlling access to preliminarily identified computer resources is disclosed. The access is controlled so as to prevent the circumventing, by malicious applications, of barriers set up to prevent them from communicating when they are executed on one or more processors of an electronic device The method is implemented by an electronic device having access to the resources to be controlled. The method includes: receiving a request, coming from a program, for access to a current resource; obtaining at least one access parameter for access to the current resource within a resource-characterizing data structure; and modulating access to the current resource as a function of the at least one access parameter.

Abstract: A method and a payment terminal enable verification of the authenticity of a payment terminal. More particularly, a method is provided for processing a piece of initial data, carried out within the payment terminal, the payment terminal being configured to authorize a verification of its authenticity by using the piece of initial data. The method includes: obtaining at least one piece of information external to the payment terminal, called a piece of initial data; cryptographic processing of the piece of initial data, delivering a piece of processed data; visual and/or sound rendering of the piece of processed data.

Abstract: A method of encryption of a message implemented by an electronic encryption device. The method includes: obtaining a current message; obtaining a current encryption key; determining, from a plurality of variants a basic encryption protocol, of a current variant of the encryption protocol; encrypting, by using the current variant and the encryption key, the message to be encrypted, delivering an encrypted message; and transmitting the encrypted key.

Abstract: An information processing method, a terminal device, and a network system include encrypting, by a first terminal, an authorization key based on a public key of a second terminal to obtain an authorization key ciphertext corresponding to the second terminal, and sending, by the first terminal, the authorization key ciphertext to the second terminal such that the second terminal decrypts the authorization key ciphertext based on a private key of the second terminal to obtain the authorization key, and then performs file decryption.

Abstract: The proposed technique relates to a method for securing a confirmation of a sequence of characters (SEQ) entered by a user on an electronic data entry device comprising an unsecured processor and a secured processor. This method, implemented in the secured processor, comprises determining a processing operation to be applied to said sequence of characters (SEQ), as a function of a signal (SIG_V) representing a confirmation, by the user, of the sequence of characters (SEQ), the signal (SIG_V) representing a confirmation being delivered by a confirmation means belonging to a set comprising at least two distinct confirmation means.

Abstract: A method for securing at least one memory zone of an electronic device. The method includes: detecting deallocation of at least one portion of the memory zone, a so-called deallocated portion; replacing at least one part of the deallocated portion with at least one predetermined instruction, a so-called warning instruction, or at least one combination of predetermined instructions, a so-called warning instruction combination; and marking the deallocated portion.

Abstract: The invention relates to a process for transmitting streaming digital content to a client device for access to digital content. The inventive process makes it possible, in particular, to apply an access control system to the protection of direct-mode video streams. The process also makes it possible to significantly improve the security and safety of the system, based on a periodic mandatory back-communication on the part of the client device.

Abstract: A method is provided for processing data displayed on a screen of a multimedia kiosk, which has a contactless payment terminal. The method is implemented within the multimedia kiosk and includes detecting a presence of a user; and modifying, by using an interactive management module, a common advertisement message, broadcast by the multimedia kiosk, into a personalized advertisement.

Abstract: The invention relates to a method for transmitting data implemented between a terminal and an integrated circuit, said terminal and said integrated circuit communicating by means of an interface for transmitting and receiving data. According to the invention, said method comprises at least one iteration of the following steps, implemented by the terminal, generating (10) a command intended for said integrated circuit, said command comprising a command header; encrypting (20) said command (CX), delivering an encrypted command (CC); creating (20) a second command (CY), said command comprising a command header and data, said data being constituted at least partly by said encrypted commands (CC); transmitting (40) said second command (CY) to said integrated circuit.

Abstract: A method is provided for authenticating a user's communications terminal with an authentication server connected to a gateway terminal by using a communications network. The method includes: obtaining a piece of data representing an identity of the user from the gateway terminal; configuring, by the authentication server, a data transmission link between the authentication server and the terminal, using a predefined data transmission interface of the gateway terminal and as a function of the piece of data representing the identity of the user; transmitting, by the authentication server, to the terminal, a piece of encrypted data for checking authentication, using the data transmission link; receiving, by the authentication user, coming from the terminal, a piece of encrypted data for counter-checking authentication; issuing an assertion of authentication of the user when the piece of data for the counter-checking of authentication corresponds to the piece of data for checking authentication.

Abstract: A method of encryption of a message implemented by an electronic encryption device. The method includes: obtaining a current message; obtaining a current encryption key; determining, from a plurality of variants a basic encryption protocol, of a current variant of the encryption protocol; encrypting, by using the current variant and the encryption key, the message to be encrypted, delivering an encrypted message; and transmitting the encrypted key.