Abstract: A method for locking a rewritable non-volatile memory of an electronic device is described. A first step of initialising the electronic device is performed. At least one memory area of the rewritable non-volatile memory is then selected from a set of N memory areas of the rewritable non-volatile memory, each of the N memory areas having a content, N being an integer?2. The memory area selected is locked by volatile locking. A second step of initialising the electronic device is performed using a content stored in the memory area selected.

Abstract: A method for storing computer files in encrypted form, executed by a “key store” device and includes: establishing a list of pairs of keys wherein each of the pairs of keys is associated with a unique identifier authorized to access a computer file; receiving by an encryption key, then encrypting as many encrypted versions as there are public keys; recording an encrypted version of the computer file in a storage space accessible from the key store; a header or another part of the encrypted version of the computer file having the encrypted versions of the encryption key, each of the encrypted versions associated in the header with the identifier of the client, and in a list of files encrypted and stored under the control of the key store, as well as a pointer to an encrypted version of the file recorded in the file storage space.

Abstract: A method for switching the connection of a mobile station from a first point of wireless access to a communication network to which the mobile station is connected, to a second point of wireless access to said network, the method being implemented in a so-called “connection-management” device of said communication network, the method includes a modification of a value of a modulation or transmission-power parameter of the first wireless access point, the modified value of said parameter being of such a nature as to degrade the transmission performance between the first wireless access point and the mobile station compared with a transmission based on the value of said parameter before modification, and then a transmission to the mobile station of a message including a proposal to connect to the second wireless access point. The invention also relates to a connection-management device configured for implementing the method.

Abstract: A method for selecting an operating mode of a cable modem between first and second operating modes, the first operating mode using a first standard and first and second frequency bands separated by a third frequency band, the second operating mode using a fifth frequency band according to a second standard. The cable modem goes into the second operating mode and analyses signals included in at least the part of the fifth frequency band that includes the third frequency band which determines whether signals analyzed are not signals in accordance with the first or second standard and goes into a data transmission and reception mode according to the second standard if signals analyzed are not signals in accordance with the first and second standards and are not included in the third frequency band.

Abstract: A method for selecting an operating mode of a cable modem between first and second operating modes, the first operating mode using a first standard and first and second frequency bands separated by a third frequency band, the second operating mode using a fifth frequency band according to a second standard. The cable modem goes into the second operating mode and analyses signals included in at least the part of the fifth frequency band that includes the third frequency band which determines whether signals analyzed are not signals in accordance with the first or second standard and goes into a data transmission and reception mode according to the second standard if signals analyzed are not signals in accordance with the first and second standards and are not included in the third frequency band.