Mobiles Kommunikationsendgerät mit Authentifizierungseinrichtung, ein solches Gerät enthaltende Netzwerkanordnung und Authentifizierungsverfahren

The invention relates to a mobile communication terminal (M) comprising a first interface (1) for communicating with a computer terminal (T) and a second interface (3) for communicating within a mobile radio network (MN). Said mobile communication terminal further comprises an authentication device that is configured so as to generate a pair of matching keys on demand, one of which is transmitted via the first interface (1) while the other one is transmitted via the second interface (3). One of said keys (S1, S2) is sent along with information which makes it possible to verify externally whether the first and the second key (S1, S2) match. Also disclosed are a network system encompassing such a mobile communication terminal (M) as well as an associated authentication method.