Abstract: An embedded system and, in particular, a communication protocol suitable for a data transmission using auxiliary physical channels of such an embedded system. A transmission method suitable for such a channel includes the transmission of a data signal based on the encoding of three symbols. The message consists of a preamble allowing recognition of the symbols used, followed by the significant part of the message. The decoding of the message comprises a first step of learning the symbols used, prior to the decoding of the significant part of the message.

Abstract: A card including a data transmission mechanism using annex transmission channels. A method is described for the transmission of data by a chip card at an end of its life using hidden communication channels different from standard communication channels of the card. The data are transmitted by modulating a binary signal that results from a modification of a hardware parameter of the card.

Abstract: The description pertains in particular to a method of protecting an electronic device (SCARD), when the electronic device implements a cryptographic algorithm (AES), against side channel attacks. The cryptographic algorithm (AES) operating on an array of states which forms the subject of a secure processing. The description relates also to an electronic device (SCARD), a computer program and a storage medium for the implementation of such a method.

Abstract: A method of managing file identifiers in a portable data medium having an integrated circuit by means of a table of identifiers associating a given reference with each of the identifiers of a given file. A portable data medium including an integrated circuit arranged for performing the method.

Abstract: A device and a method for managing access rights to a wireless network uses wireless connection devices advantageously based on a smart card, which enable the wireless connection to the network once connected to a terminal. These devices include devices for time and/or geographical management of access to the network and authentication device. These devices can be easily preprogrammed by the entity managing the service and then distributed to the users.

Abstract: The device and method described herein relates to the field of computer security and, specifically, to the field of protecting confidential personal information which enables encrypted access to the remote server. A device and a method for securing confidential user information and secure exchanges of such information with the servers that host the services is provided. The device and method are based on personalising a smartcard containing the information. The chip card, connected to the user terminal, has a connection enabling the terminal to appear as a standalone host of the user's local network. An encrypted connection is then established directly between the chip card and the server hosting the service for the transmission of confidential data. The data, stored on the chip card, are then exchanged with the server via the encrypted connection. The data are never accessible in plain text on the user terminal.

Abstract: A method of managing file identifiers in a portable data medium having an integrated circuit by means of a table of identifiers associating a given reference with each of the identifiers of a given file. A portable data medium including an integrated circuit arranged for performing the method.

Abstract: The description pertains in particular to a method of protecting an electronic device (SCARD), when the electronic device implements a cryptographic algorithm (AES), against side channel attacks. The cryptographic algorithm (AES) operating on an array of states which forms the subject of a secure processing. The description relates also to an electronic device (SCARD), a computer program and a storage medium for the implementation of such a method.

Abstract: A card including a data transmission mechanism using annex transmission channels. A method is described for the transmission of data by a chip card at an end of its life using hidden communication channels different from standard communication channels of the card. The data are transmitted by modulating a binary signal that results from a modification of a hardware parameter of the card.

Abstract: An embedded system and, in particular, a communication protocol suitable for a data transmission using auxiliary physical channels of such an embedded system. A transmission method suitable for such a channel includes the transmission of a data signal based on the encoding of three symbols. The message consists of a preamble allowing recognition of the symbols used, followed by the significant part of the message. The decoding of the message comprises a first step of learning the symbols used, prior to the decoding of the significant part of the message.

Abstract: The present invention relates to the field of the management of memory writes to an information processing device and more precisely to a method of writing a set of data in a unitary and coherent manner. The invention, although of more general scope, applies more particularly in the field of chip cards. There is described a method of writing one or more data to the memory of an information processing device which comprises a step of copying a so-called original memory block comprising the data to be written to a so-called backup memory block. The data writing step is then carried out in the original memory block or in the backup memory block. It is then always possible to return if necessary to the values of the original data if the writing phase fails.

Abstract: A device and a method for managing access rights to a wireless network uses wireless connection devices advantageously based on a smart card, which enable the wireless connection to the network once connected to a terminal. These devices include devices for time and/or geographical management of access to the network and authentication device. These devices can be easily preprogrammed by the entity managing the service and then distributed to the users.

Abstract: The device and method described herein relates to the field of computer security and, specifically, to the field of protecting confidential personal information which enables encrypted access to the remote server. A device and a method for securing confidential user information and secure exchanges of such information with the servers that host the services is provided. The device and method are based on personalising a smartcard containing the information. The chip card, connected to the user terminal, has a connection enabling the terminal to appear as a standalone host of the user's local network. An encrypted connection is then established directly between the chip card and the server hosting the service for the transmission of confidential data. The data, stored on the chip card, are then exchanged with the server via the encrypted connection. The data are never accessible in plain text on the user terminal.