For the purposes of the present document, the terms and definitions given in TR 21.905
and the following apply. A term defined in the present document takes precedence over the definition of the same term, if any, in TR 21.905
Bootstrapping Server Function:
BSF is hosted in a network element under the control of an MNO. BSF, HSS, and UEs participate in GBA in which a shared secret is established between the network and a UE by running the bootstrapping procedure. The shared secret can be used between NAFs and UEs, for example, for authentication purposes. In the context of the present specification, the BSF is an SBA-capable BSF.
A function on the ME executing the bootstrapping procedure with BSF (i.e. supporting the Ub reference point) and providing Ua applications with security association to run bootstrapping usage procedure. GBA function is called by a Ua application when a Ua application wants to use bootstrapped security association.
Network Application Function:
NAF is hosted in a network element. GBA may be used between NAFs and UEs for authentication purposes, and for securing the communication path between the UE and the NAF. In the context of the present specification, the NAF is an SBA-capable NAF.
GBA User Security Settings:
GUSS contains the BSF specific information element and the set of all application-specific USSs.
An application on the ME intended to run bootstrapping usage procedure with a NAF.
For the purposes of the present document, the abbreviations given in TR 21.905
and the following apply. An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in TR 21.905
Bootstrapping Server Function
Generic Bootstrapping Architecture
GBA User Security Settings
Home Subscriber System
Network Application Function
User Security Setting