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ETSI TS 133 328
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ETSI TS 133 328 Universal Mobile Telecommunications System (UMTS); LTE; IP Multimedia Subsystem (IMS) media plane security (3GPP TS 33.328 version 14.0.0 Release 14)
standard by European Telecommunications Standards Institute, 04/01/2017
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Full Description
ETSI TS 133 328 presents IMS media plane security for RTP and MSRP based media as well as security for BFCPas used in IMS conferencing. The security mechanisms are designed to meet the following three main objectives: to provide security for media usable across all access networks to provide an end-to-end (e2e) media security solution for RTP based media to satisfy major user categories to provide end-to-end (e2e) media security for important user groups like enterprises, National Security andPublic Safety (NSPS) organizations and different government authorities who may have weaker trust in theinherent IMS security and/or may desire to provide their own key management service.The media plane security for RTP based media is based on the well established protocol SRTP. Key managementsolutions for SRTP are defined in this specification.The media plane security for MSRP, used in session-based messaging, is based on TLS. TLS is also used to protectBFCP. Key management solutions for MSRP and BFCP security are defined in this specification.
Two normative Annexes to the present document address IMS media plane security for immediate messaging andconferencing, respectively. The media plane security for session-based messaging is addressed in the main body of thisspecification.