1、 ETSI TS 133 328 V14.0.0 (2017-04) Universal Mobile Telecommunications System (UMTS); LTE; IP Multimedia Subsystem (IMS) media plane security (3GPP TS 33.328 version 14.0.0 Release 14) TECHNICAL SPECIFICATION ETSI ETSI TS 133 328 V14.0.0 (2017-04)13GPP TS 33.328 version 14.0.0 Release 14Reference RT
2、S/TSGS-0333328ve00 Keywords LTE,SECURITY,UMTS ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N 348 623 562 00017 - NAF 742 C Association but non lucratif enregistre la Sous-Prfecture de Grasse (06) N 7803/88 Important notice T
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8、or the benefit of its Members. 3GPPTM and LTE are Trade Marks of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. oneM2M logo is protected for the benefit of its Members GSM and the GSM logo are Trade Marks registered and owned by the GSM Association. ETSI ETSI
9、 TS 133 328 V14.0.0 (2017-04)23GPP TS 33.328 version 14.0.0 Release 14Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and no
10、n-members, and can be found in ETSI SR 000 314: “Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (https:/ipr.etsi.org/). Pu
11、rsuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present d
12、ocument. Foreword This Technical Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP). The present document may refer to technical specifications or reports using their 3GPP identities, UMTS identities or GSM identities. These should be interpreted as being referenc
13、es to the corresponding ETSI deliverables. The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found under http:/webapp.etsi.org/key/queryform.asp. Modal verbs terminology In the present document “shall“, “shall not“, “should“, “should not“, “may“, “need not“, “will“, “will not“,
14、“can“ and “cannot“ are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of provisions). “must“ and “must not“ are NOT allowed in ETSI deliverables except when used in direct citation. ETSI ETSI TS 133 328 V14.0.0 (2017-04)33GPP TS 33.328 versio
15、n 14.0.0 Release 14Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 7g3Introduction 8g31 Scope 9g32 References 9g33 Definitions, symbols and abbreviations . 11g33.1 Definitions 11g33.2 Symbols 11g33.3 Abbreviations . 11g34 IMS media plane security overview
16、 . 12g34.1 Introduction 12g34.1.1 General 12g34.1.2 Overview of key management solutions for IMS media plane security . 12g34.1.2.1 SDES based solution . 12g34.1.2.2 KMS based solution 13g34.1.2.3 Certificate fingerprints based solution for TLS . 13g34.2 IMS media plane security architecture . 14g34
17、.2.1 General 14g34.2.2 E2ae security . 14g34.2.3 E2e security using SDES 14g34.2.4 E2e security using KMS . 15g35 IMS media plane security features . 16g35.1 General . 16g35.2 Media integrity protection 16g35.3 Media confidentiality protection 16g35.4 Authentication and authorization . 16g35.4.1 Aut
18、hentication and authorization for e2ae protection . 16g35.4.2 Authentication and authorization for e2e protection using SDES 17g35.4.3 Authentication and authorization for e2e protection using KMS 17g35.5 Security properties of key management, distribution and derivation . 18g35.5.1 General security
19、 properties for protection using SDES 18g35.5.2 Additional security properties for e2ae protection using SDES 18g35.5.3 Security properties for e2e protection using KMS 19g35.5.4 Security properties for e2ae protection using TLS . 19g36 Security mechanisms 19g36.1 Media security mechanisms . 19g36.1
20、.1 Media security mechanisms for real-time traffic 19g36.1.2 Media security mechanisms for session based messaging (MSRP) 19g36.2 Key management mechanisms for media protection 20g36.2.1 Key management mechanisms for e2ae protection . 20g36.2.1.1 Endpoints for e2ae protection . 20g36.2.1.2 Key manag
21、ement protocol for e2ae protection . 20g36.2.1.3 Functional extension of the Iq interface for e2ae protection . 20g36.2.1.3.1 Functional extension of the Iq interface for e2ae protection for RTP . 20g36.2.1.3.2 Functional extension of the Iq interface for e2ae protection for MSRP 21g36.2.2 Key manag
22、ement mechanisms for e2e protection using SDES 21g36.2.3 Key management mechanisms for e2e protection using KMS . 21g36.2.3.1 General 21g36.2.3.2 KMS user and user group identities 22g36.2.3.3 IMS UE local policies . 22g3ETSI ETSI TS 133 328 V14.0.0 (2017-04)43GPP TS 33.328 version 14.0.0 Release 14
23、6.2.3.4 Ticket data . 23g36.2.3.4.1 Ticket format . 23g36.2.3.4.2 Allocation of ticket subtype and version for ticket type 2 . 23g36.2.3.5 Authentication of public identities in REQUEST_INIT and RESOLVE_INIT 23g36.2.3.6 Authentication of terminating user identity . 23g36.2.3.7 Reusable tickets . 23g
24、36.2.3.8 Signalling between KMSs . 24g37 Security association set-up procedures for media protection . 24g37.1 IMS UE registration procedures . 24g37.1.1 Indication of support for e2ae security for RTP based media . 24g37.1.2 Indication of support for e2ae security for MSRP 25g37.2 IMS UE originatin
25、g procedures 25g37.2.1 IMS UE originating procedures for e2ae 25g37.2.2 IMS UE originating procedures for e2e using SDES 28g37.2.3 IMS UE originating procedures for e2e using KMS . 30g37.3 UE terminating procedures . 31g37.3.1 UE terminating procedures for e2ae . 31g37.3.2 IMS UE terminating procedu
26、res for e2e using SDES . 34g37.3.3 IMS UE terminating procedures for e2e using KMS 36g37.4 Session update procedures 37g37.5 Handling of emergency calls 37g3Annex A (Normative): HTTP based key management messages . 38g3A.1 General aspects . 38g3A.2 Key management procedures . 38g3A.3 Error situation
27、s . 39g3Annex B (Normative): KMS based key management 40g3B.1 UE originating procedures 40g3B.1.1 Preconditions 40g3B.1.2 Procedures 40g3B.2 UE terminating procedures . 41g3B.2.1 General . 41g3B.2.2 Procedures for the case with one KMS domain 41g3B.2.2.1 Preconditions 41g3B.2.2.2 Procedures. 41g3B.2
28、.3 Procedures for the case with two KMS domains 42g3B.2.3.1 Preconditions 42g3B.2.3.2 Procedures. 42g3Annex C (Normative): SRTP profiling for IMS media plane security . 44g3Annex D (Normative): MIKEY-TICKET profile for IMS media plane security . 45g3D.1 Scope 45g3D.2 General . 45g3D. 2A Keys, RANDs
29、and algorithms 45g3D.3 Exchanges . 45g3D.3.1 Ticket Request 45g3D.3.2 Ticket Transfer . 46g3D.3.3 Ticket Resolve 46g3D.4 Profiling of tickets 46g3Annex E (normative): Profiling of SDES . 48g3Annex F (normative): IMS media plane security for immediate messaging 49g3ETSI ETSI TS 133 328 V14.0.0 (2017-
30、04)53GPP TS 33.328 version 14.0.0 Release 14F.1 General aspects . 49g3F.2 Security for immediate messaging based on SIP signalling security . 49g3F.3 Security for immediate messaging based on MIKEY-TICKET . 49g3F.3.1 UE sends a SIP MESSAGE 49g3F.3.2 UE receives a SIP MESSAGE . 50g3F.3.2 List server
31、forwards a SIP MESSAGE to multiple recipients using a PSI . 51g3F.3.2 List server forwards a SIP MESSAGE to multiple recipients using a URI-list 51g3Annex G (normative): IMS media plane security for conferencing . 52g3G.1 General aspects . 52g3G.2 Security for conferencing based on SIP signalling se
32、curity . 52g3G.3 Security for conferencing based on MIKEY-TICKET. 53g3G.3.1 Conference creation and policy control 53g3G.3.2 User joining a secure conference 53g3G.3.3 Subscribing to conference event package . 54g3Annex H (normative): Setup of TLS-PSK using MIKEY-TICKET 55g3H.1 The TLS Prot Type . 5
33、5g3H.2 Establishing a TLS connection . 56g3H.3 Usage with SDP . 56g3Annex I (normative): Pre-shared key MIME protection 57g3I.1 The smime-type parameter . 57g3I.2 The Auth-Enveloped S/MIME type . 57g3I.2.1 General . 57g3I.2.2 Creating an Auth-Enveloped message 58g3I.3 Transferring KEK using MIKEY-TI
34、CKET 58g3I.4 MIKEY-TICKET profile for pre-shared key MIME protection 59g3Annex J (normative): IANA considerations 60g3J.1 IANA assignments . 60g3Annex K (normative): MIKEY general extension payload for message proof-of-origin . 61g3K.1 Payload format . 61g3Annex L (normative): IMS media plane securi
35、ty for T.38 fax. 62g3L.1 Introduction 62g3L.2 Use cases 62g3L.3 e2ae security for T.38 fax using DTLS 62g3Annex M (normative): TLS profile for IMS media plane security . 64g3M.1 General . 64g3Annex N (normative): IMS media plane security interworking for WebRTC access to IMS 65g3N.1 General . 65g3N.
36、2 Media security for RTP 65g3N.2.1 General . 65g3N.2.2 e2ae security for RTP using DTLS-SRTP 65g3N.3 Media security for WebRTC data channels 66g3ETSI ETSI TS 133 328 V14.0.0 (2017-04)63GPP TS 33.328 version 14.0.0 Release 14N.3.1 General . 66g3N.3.2 e2ae security for WebRTC data channels . 67g3Annex
37、 O (normative): Profiling of DTLS-SRTP . 69g3Annex P (informative): Change history . 70g3History 73g3ETSI ETSI TS 133 328 V14.0.0 (2017-04)73GPP TS 33.328 version 14.0.0 Release 14Foreword This Technical Specification has been produced by the 3rdGeneration Partnership Project (3GPP). The contents of
38、 the present document are subject to continuing work within the TSG and may change following formal TSG approval. Should the TSG modify the contents of the present document, it will be re-released by the TSG with an identifying change of release date and an increase in version number as follows: Ver
39、sion x.y.z where: x the first digit: 1 presented to TSG for information; 2 presented to TSG for approval; 3 or greater indicates TSG approved document under change control. y the second digit is incremented for all changes of substance, i.e. technical enhancements, corrections, updates, etc. z the t
40、hird digit is incremented when editorial only changes have been incorporated in the document. ETSI ETSI TS 133 328 V14.0.0 (2017-04)83GPP TS 33.328 version 14.0.0 Release 14Introduction With Common IMS it has become possible to use IMS over a wide variety of access networks. These access networks pr
41、ovide security of varying strengths, or, in some cases, no security at all. It is therefore desirable to have a standard for IMS media plane security, which provides uniform protection of IMS media against eavesdropping and undetected modification across access networks. Furthermore, media transport
42、 in the core network, although generally less vulnerable than in the access network, may also be realised in varying ways with different guarantees of protection. It is therefore also desirable to have a standard for IMS media plane security, which guarantees protection of IMS media against eavesdro
43、pping and undetected modification in an end-to-end (e2e) fashion between two terminal devices. ETSI ETSI TS 133 328 V14.0.0 (2017-04)93GPP TS 33.328 version 14.0.0 Release 141 Scope The present document presents IMS media plane security for RTP and MSRP based media as well as security for BFCP as us
44、ed in IMS conferencing. The security mechanisms are designed to meet the following three main objectives: 1. to provide security for media usable across all access networks 2. to provide an end-to-end (e2e) media security solution for RTP based media to satisfy major user categories 3. to provide en
45、d-to-end (e2e) media security for important user groups like enterprises, National Security and Public Safety (NSPS) organizations and different government authorities who may have weaker trust in the inherent IMS security and/or may desire to provide their own key management service. The media plan
46、e security for RTP based media is based on the well established protocol SRTP. Key management solutions 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 protect BFCP. Key management solutions for MSRP
47、 and BFCP security are defined in this specification. Two normative Annexes to the present document address IMS media plane security for immediate messaging and conferencing, respectively. The media plane security for session-based messaging is addressed in the main body of this specification. 2 Ref
48、erences The following documents contain provisions which, through reference in this text, constitute provisions of the present document. - References are either specific (identified by date of publication, edition number, version number, etc.) or non-specific. - For a specific reference, subsequent
49、revisions do not apply. - For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document. 1 3GPP TR 21.905: “Vocabulary for 3GPP Specifications“. 2 3GPP TS 23.002: “Network architecture“. 3 3GPP TS 23.228: “IP Multimedia (IM) Subsystem“. 4 3GPP TS 33.203: “3G Security; Access security for IP-based services“. 5 3GPP TS 33.210: “3G Security; Network domain security; IP network
