Abstract: The present invention concerns a method for distribution of the load of a managing center transmitting information to a great number of user units, each unit receiving information after a request carried out while connecting to the managing center, characterized in that it comprises following steps: determining by the managing center of a number of units to process with said information, determining of a time period during which said number of units has to be processed, transmitting of a message to the user units comprising on one hand, the probability of connection of a unit to the managing center based on the number of units previously determined and on the other hand, the time period previously determined during which the unit connects according to said probability.

Abstract: Example embodiments relate to a method and system for transmitting messages between an emitter and at least one receiver.

Abstract: The present invention concerns a method for distribution of the load of a managing center transmitting information to a great number of user units, each unit receiving information after a request carried out while connecting to the managing center, characterized in that it comprises following steps: determining by the managing center of a number of units to process with said information, determining of a time period during which said number of units has to be processed, transmitting of a message to the user units comprising on one hand, the probability of connection of a unit to the managing center based on the number of units previously determined and on the other hand, the time period previously determined during which the unit connects according to said probability.

Abstract: This invention relates to a method for transmitting messages between an emitter and at least one receiver, comprising the following steps: encryption of the message (m) to be transmitted by means of a key (a) associated to said emitter; sending of the encrypted message in a conversion module comprising a conversion key (?a?b) and a conversion function; conversion of the encrypted message received in the conversion module in an encrypted message in order to be able to be decrypted by a key (b) specific to said receiver, this conversion being carried out without the initial message appearing in plaintext in the conversion module; sending the converted message to said receiver; decryption of said transformed message received by said receiver by means of the specific key b; wherein the conversion key (?a?b) of the conversion module depends on a non trivial value raised to the power of the key (a) bound to the emitter and of the key (b) bound to the receiver.