GBA_U and MBMS Authentication

GBA_U is a GBA with Universal Integrated Circuit Card (UICC) based enhancement. The GBA specific functions are split between the phone and the UICC. GBA_U provides enhanced security by storing the derived keys on the UICC.

MBMS introduces the concept of a point-to-multipoint (p-t-m) service into a 3GPP system. MBMS user service transmits the data securely for a given set of users. The multimode telephony enables the client applications to:

• Authenticate UICC (GBA and MBMS)

• Set GBA bootstrap parameters

• Cancel the set GBA bootstrapping parameter request

• Receive notification of authentication data change

• Cancel the notify authentication data change requests

• Get authentication parameters

• Cancel the get authentication parameters request

• Two phase retrieval of GBA NAF and MBMS MSK