33 series - Application domain security
Application domain security is a set of security features that allows the user's application to communicate securely with the service provider. (These security features might include application layer authentication and ciphering, for example.) Application domain security is mainly an issue for the service provider, but a few issues fall into the scope of 3GPP.
The generic authentication architecture allows the application layer to carry out authentication and key agreement, by building on the processes that have already been carried out for network access. This mechanism is then used as part of the application-layer security features for the MBMS and the presence service.
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