Abstract: A method of communication between two communicating entities, a first communicating entity generating a data message including useful data and an authentication header, the method including: generating a message identifier from a given parameter and a date and inserting the identifier into an authentication header; inserting a plurality of authentication data including at least one user identifier and one equipment identifier into the authentication header; determining and inserting a security profile into the authentication header defining the conditions: of encryption of the useful data of at least the transmission of the message by the first communicating entity; of generation of a data signature of the message and of the format of the generated signature, and inserting the useful data into the message to be transmitted.

Abstract: A method for dynamic management of a first level of verbosity of a component defined in a data network, the data network having a control center, each component allowing the execution of tasks and including a security management configuration associating a status message, forming a log, with the execution of a task of the component, each log associated with a task indicating an event and having a local level, the control center allowing the collection of a set of logs to supervise the network, the method including: detecting a stimulus by a control center; determining a component associated with the stimulus detected by the control center; modifying the first level of verbosity of the component to a second level of verbosity during a first given period, the modification being launched by generating a supervision command by the control center, the second level of verbosity being defined according to the stimulus.

Abstract: The present invention relates to a device for detecting unwanted intrusions into an information network comprising a module for receiving raw data from the network, a plurality of search engines configured to detect an attack indicator and any derived data which may be corrupted, a distribution module suitable for allocating at least one search engine to each piece of raw data, an administrator module linked to the search engines and to the distribution module and configured to transmit each piece of derived data to said module as new raw data if it has not already been processed by said same search engine(s), so as to provide recursive analysis of each piece of raw data received by said receiving module. The invention further relates to a process implemented by a device of this type.

Abstract: The present invention relates to a device for detecting unwanted intrusions into an information network comprising a module for receiving raw data from the network, a plurality of search engines configured to detect an attack indicator and any derived data which may be corrupted, a distribution module suitable for allocating at least one search engine to each piece of raw data, an administrator module linked to the search engines and to the distribution module and configured to transmit each piece of derived data to said module as new raw data if it has not already been processed by said same search engine(s), so as to provide recursive analysis of each piece of raw data received by said receiving module. The invention further relates to a process implemented by a device of this type.

Abstract: A system for transmitting a message from a source entity to a target entity, the system including an input unit connected to the source entity in order to transmit the message via an optical transmission device to an output unit re-directing the message to the target entity. The optical transmission device is configured to transmit the message unidirectionally from the input unit to the output unit; and duplicate an optical input system containing the message into at least two optical output signals each containing the message to be transmitted to the output unit.

Abstract: The method for reliabilization of the supervision of a network comprises: acquisition of a set of events, said events comprising a time stamp corresponding with the emission time of said event; storage of the received events; storage of at least one scenario (SC) comprising a first sequence (S1) of events to be received within a time interval threshold (?Ts) and a first condition (CD1) to be satisfied; detection of at least a part (pS2) of a received second sequence of events (S2) similar to the first sequence (S1); determination of a second emission time interval (?T3) of the second sequence (S2); verification that the first condition (CD1) of the scenario (SC) is satisfied in function of the determined emission time interval (?T3), the time interval threshold (?Ts) of scenario (SC), and the first sequence (S1) and the second sequence (S2) received, and generation of a second status message (M2ET).

Abstract: A system for transmitting a message from a source entity to a target entity, the system including an input unit connected to the source entity in order to transmit the message via an optical transmission device to an output unit re-directing the message to the target entity. The optical transmission device is configured to transmit the message unidirectionally from the input unit to the output unit; and duplicate an optical input system containing the message into at least two optical output signals each containing the message to be transmitted to the output unit.

Abstract: The method for reliabilisation of the supervision of a network comprises: acquisition of a set of events, said events comprising a time stamp corresponding with the emission time of said event; storage of the received events; storage of at least one scenario (SC) comprising a first sequence (S1) of events to be received within a time interval threshold (?Ts) and a first condition (CD1) to be satisfied; detection of at least a part (pS2) of a received second sequence of events (S2) similar to the first sequence (Si); determination of a second emission time interval (?T3) of the second sequence (S2); verification that the first condition (CD1) of the scenario (SC) is satisfied in function of the determined emission time interval (?T3), the time interval threshold (?Ts) of scenario (SC), and the first sequence (S1) and the second sequence (S2) received, and generation of a second status message (M2ET).