Abstract:
The present invention concerns a personal token for a mobile terminal in a communication network including an authentication server and a secure server producing derived key material on the basis of a random and a secret key (K) for use in an authentification and key agreement (AKA) procedure in a third-generation mobile system, said personal token including program instructions for re-computing the derived key material (Ck, Ik) on the basis of the received random and the secret key (K) as stored in the personal token, characterized in that the personal token includes program instructions for using a re-computed part of the derived key material in order to interpret the received additional data. This modification of the standard AKA procedure allows the personal token to keep the key material unavailable to the mobile terminal.
Abstract:
The invention deals with database synchronization. A first database (DB1) is stored in a removable device for example a smartcard (CAR) communicating wit h a first system (MOB). A second database(DB2) of the same nature being stored in a second system (PDA) communicating with said first system.Said first and second system (MOB, PDA) comprises means able to generate synchronization objects defining the last database synchronization which has been performed between said two databases of saidtwo systems. After each synchronization st ep of the first database (DB1) with the second database (DB2),a program externa l to the removable device (CAR) sends a command to the removable device (CAR) forsetting a synchronization object to said first database (DB1), said synchronization object being also affectedto the second database (DB2) which has been synchronized.