Patent ID: 8010794
Filing Date: 2011-08-30
Classification: H04H,H04L,H04W

Abstract:
1. Method for securing a transmission between a system and at least one user having a terminal, the system comprising a broadcasting subsystem and a radiocommunication subsystem each connected to a mediation platform, said transmission being ciphered and arranged for being deciphered by using a key, the method comprising the following steps performed at the mediation platform having a processor, relative to a user or group of users having terminals: determining, by the mediation platform, one first and at least one second sets of values from said key, so that the knowledge of said first and at least one second sets of values is required to retrieve the key; and controlling, by the mediation platform, the broadcasting subsystem so that the broadcasting subsystem transmits the first set of values to the user or group of users and the radiocommunication subsystem so that the radiocommunication subsystem transmits the at least one second set of values to the user or group of users.