2468869A PUBLIC KEY KEY PAIR IN THE TERMINAL FOR AUTHENTICATION AND AUTHORIZATION OF THE TELECOMMUNICATION SUBSCRIBER IN RESPECT OF THE NETWORK OPERATOR AND BUSINESS PARTNERS

摘要

A very efficient authentication and authorisation check in n: m relationship s is possible with a method for checking the entitlement of a user of a telecommunication terminal (1) to a service, whereby an access device (4) on a telecommunication network (3) obtains at least one certificate and a proof o f identity (10) from the telecommunication terminal (1), whereupon NMT (5) together with a certification device (7) carries out a check of whether the certificate giving the identity is valid and has a positive status and wheth er particular authorisation may be obtained from complementary certificates. Should the above be the case, a secret (for example a session key) is transmitted (15) to the access device (4) which is also sent (15, 16) to the telecommunication terminal (1, 2), encoded with at least the public key. The access device (4) is then activated with a policy corresponding to the right s of the telecommunication user.