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ETSI TS 124 109
M00002828
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ETSI TS 124 109 Universal Mobile Telecommunications System (UMTS); LTE; Bootstrapping interface (Ub) and network application function interface (Ua); Protocol details (3GPP TS 24.109 version 14.0.0 Release 14)
standard by European Telecommunications Standards Institute, 05/01/2017
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ETSI TS 124 109 defines stage 3 for the HTTP Digest AKA [6] based implementation of Ub interface (UE-BSF),the Disposable-Ks model based implementation of Upa interface (NAF-UE) and the HTTP Digest [9] and the PSK TLSbased implementation of bootstrapped security association usage over Ua interface (UE-NAF) in GenericAuthentication Architecture (GAA) as specified in 3GPP TS 33.220 [1]. The purpose of the Ub interface is to create asecurity association between UE and BSF for further usage in GAA applications. The purpose of the Upa interface is toprovide a push mechanism to created a bootstrapped security association between the UE and NAF for securecommunication of pushed messages. The purpose of the Ua interface is to use the so created bootstrapped securityassociation between UE and NAF for secure communication.The present document also defines stage 3 for the Authentication Proxy usage as specified in 3GPP TS 33.222 [5].
The present document also defines stage 3 for the subscriber certificate enrolment as specified in 3GPP TS 33.221 [4]which is one realization of the Ua interface. The subscriber certificate enrolment uses the HTTP Digest basedimplementation of bootstrapped security association usage to enrol a subscriber certificate and the delivery of a CAcertificate.