METHOD FOR SECURE COMMUNICATION BETWEEN A NETWORK AND A TERMINAL SMART CARD

摘要

The invention concerns a method which sets up a secure transmission between two entities in a telecommunication network, and particularly between a mobile terminal (MS) and the stationary network, in particular visitor locating and home location registers (VLR, HLR) and an authenticating centre (AUC), in a cellular radiotelephone network. During authentication (E9, E9', E10) of a terminal, and more precisely of the SIM card therein, the data DATA are transmitted by the stationary network with a random number (NA) produced by the stationary network. The data DATA, the random number NA and a key (Ki) are applied in the first and second entities to an algorithm (AA) to proceed with authentication.