1、 ETSI TS 1Security of Mission Cri(3GPP TS 33.1TECHNICAL SPECIFICATION133 179 V13.0.0 (2016LTE; Critical Push To Talk (MCPTT).179 version 13.0.0 Release 1316-05) T) over LTE 13) ETSI ETSI TS 133 179 V13.0.0 (2016-05)13GPP TS 33.179 version 13.0.0 Release 13Reference DTS/TSGS-0333179vd00 Keywords LTE,
2、SECURITY 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 The present document can be downloaded
3、 from: http:/www.etsi.org/standards-search The present document may be made available in electronic versions and/or in print. The content of any electronic and/or print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any existing or
4、perceived difference in contents between such versions and/or in print, the only prevailing document is the print of the Portable Document Format (PDF) version kept on a specific network drive within ETSI Secretariat. Users of the present document should be aware that the document may be subject to
5、revision or change of status. Information on the current status of this and other ETSI documents is available at http:/portal.etsi.org/tb/status/status.asp If you find errors in the present document, please send your comment to one of the following services: https:/portal.etsi.org/People/CommiteeSup
6、portStaff.aspx Copyright Notification No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm except as authorized by written permission of ETSI. The content of the PDF version shall not be modified without the written authori
7、zation of ETSI. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2016. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members. 3GPPTM and LTE a
8、re Trade Marks of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. GSM and the GSM logo are Trade Marks registered and owned by the GSM Association. ETSI ETSI TS 133 179 V13.0.0 (2016-05)23GPP TS 33.179 version 13.0.0 Release 13Intellectual Property Rights IPRs
9、 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 non-members, and can be found in ETSI SR 000 314: “Intellectual Property Rights (IPRs); Essential, or pot
10、entially 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/). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI.
11、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 document. Foreword This Technical Specification (TS) has been produced by ETSI 3rd Generation Partnershi
12、p 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 references to the corresponding ETSI deliverables. The cross reference between GSM, UMTS, 3GPP and ETSI identit
13、ies 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“, “can“ and “cannot“ are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal
14、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 133 179 V13.0.0 (2016-05)33GPP TS 33.179 version 13.0.0 Release 13Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Fo
15、reword . 7g31 Scope 8g32 References 8g33 Definitions and abbreviations . 9g33.1 Definitions 9g33.2 Abbreviations . 9g34 Overview of MCPTT Security . 10g34.1 General . 10g35 Authentication and Authorization 10g35.1 General . 10g35.2 LTE access authentication and security mechanism. 11g35.3 Authentica
16、tion for SIP core access . 11g35.4 Authentication for HTTP-1 11g35.5 User Authentication 12g35.5.1 Identity Management Functional Model . 12g35.5.2 User Authentication Framework . 13g35.5.3 OpenID Connect (OIDC) 14g35.5.3.1 General 14g35.5.3.2 OpenID Connect (OIDC) Example Using Username/Password .
17、15g35.6 MCPTT User Authorization . 16g35.6.1 General 16g35.6.2 MCPTT user service authorization with MCPTT Server 17g35.6.2.0 General 17g35.6.2.1 Using SIP REGISTER 18g35.6.2.2 Using SIP PUBLISH . 18g36 Signalling plane protection . 19g36.1 SIP-1 interface security 19g36.2 HTTP-1 interface security
18、19g37 End-to-end communication security 19g37.1 Overview 19g37.2 Key provisioning and management 20g37.2.1 General 20g37.2.2 Functional model for key management . 20g37.2.2.0 General 20g37.2.2.1 Reference point CSC-8 (between key management server and the key management client within the MCPTT UE) 2
19、1g37.2.2.2 Reference point CSC-9 (between the key management server and the key management client within the MCPTT Server) 21g37.2.2.3 Reference point CSC-10 (between the key management server and the key management client within a group management server) 21g37.2.3 Security procedures for key manag
20、ement . 21g37.2.4 Provisioned key material to support end-to-end communication security 22g37.3 Group call key distribution . 22g37.3.1 General 22g37.3.2 Security procedures for GMK provisioning 24g37.3.3 Keying for media protection and floor control . 25g37.3.4 Group creation procedure . 25g37.3.5
21、Dynamic group keying 26g3ETSI ETSI TS 133 179 V13.0.0 (2016-05)43GPP TS 33.179 version 13.0.0 Release 137.3.5.1 General 26g37.3.5.2 Group regrouping procedures (within a single MCPTT system) 26g37.3.5.3 Group regrouping procedures (involving multiple MCPTT systems) . 26g37.3.6 Derivation of SRTP/SRT
22、CP master keys . 27g37.4 Private call key distribution 28g37.4.1 General 28g37.4.2 Security procedures (on-network) . 29g37.4.3 Security procedures (off-network) 30g37.4.4 Derivation of SRTP/SRTCP master keys . 31g37.4.5 Floor control security for private calls 31g37.4.5.0 General 31g37.4.5.1 Floor
23、control managed by communicating UEs 31g37.4.5.2 Floor control managed by a floor control server . 32g37.5 Protection of media stream (SRTP) 32g37.5.1 General 32g37.5.2 Security procedures for media stream protection 33g37.6 Protection of floor control signalling (SRTCP) 34g37.6.1 General 34g37.6.2
24、Security procedures for floor control protection . 35g38 Inter/Intra domain interface security 36g38.1 General . 36g39 Protection of sensitive application signalling . 37g39.1 Key agreement for protection of sensitive application data (Client to Server) . 37g39.1.1 Identity based Key management for
25、Client Server key (CSK) . 37g39.1.2 Creation of the CSK 37g39.1.3 Secure distribution of the CSK . 37g39.1.3.0 General 37g39.1.3.1 MIKEY-SAKKE I_MESSAGE 37g39.1.3.2 Distribution of CSK during MCPTT Service Authorization and group subscription . 38g39.1.3.3 Obtaining CSK from the I_MESSAGE. 38g39.1.3
26、.4 Procedure 38g39.2 Key agreement for protection of sensitive application data between servers . 39g39.3 Protection of XML content . 40g39.3.1 General 40g39.3.2 Protected content 40g39.3.3 Key agreement 40g39.3.4 Confidentiality protection using XML encryption (xmlenc) 40g39.3.5 Integrity protectio
27、n using XML signature (xmlsig) 41g3Annex A (normative): Security requirements . 43g3A.0 Introduction 43g3A.1 Configuration 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. technica
28、l enhancements, corrections, updates, etc. z the third digit is incremented when editorial only changes have been incorporated in the document. ETSI ETSI TS 133 179 V13.0.0 (2016-05)83GPP TS 33.179 version 13.0.0 Release 131 Scope The present document specifies the security architecture, procedures
29、and information flows needed to protect the mission critical push to talk (MCPTT) service. The architecture includes mechanisms for authentication, protection of MCPTT signalling and protection of MCPTT media. Security for both MCPTT group calls and MCPTT private calls operating in on-network and of
30、f-network modes of operation is specified. The functional architecture for MCPTT is defined in 3GPP TS 23.179 2, the corresponding service requirements are defined in 3GPP TS 22.179 3. The MCPTT service can be used for public safety applications and also for general commercial applications e.g. util
31、ity companies and railways. As the security model is based on the public safety environment, some security features may not be applicable to MCPTT for commercial purposes. 2 References The following documents contain provisions which, through reference in this text, constitute provisions of the pres
32、ent document. - References are either specific (identified by date of publication, edition number, version number, etc.) or non-specific. - For a specific reference, subsequent revisions do not apply. - For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP do
33、cument (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 23.179: “Functional architecture and information flows to support missio
34、n critical communication services; Stage 2“. 3 3GPP TS 22.179: “Mission Critical Push To Talk (MCPTT) over LTE; Stage 1“. 4 3GPP TS 33.210: 3G security; Network Domain Security (NDS); IP network layer security. 5 3GPP TS 33.310: “Network Domain Security (NDS); Authentication Framework (AF)“. 6 3GPP
35、TS 33.203: “3G security; Access security for IP-based services“. 7 Void. 8 3GPP TS 33.328: IP Multimedia Subsystem (IMS) media plane security. 9 IETF RFC 6507: Elliptic Curve-Based Certificateless Signatures for Identity-Based Encryption (ECCSI). 10 IETF RFC 6508: Sakai-Kasahara Key Encryption (SAKK
36、E). 11 IETF RFC 6509: MIKEY-SAKKE: Sakai-Kasahara Key Encryption in Multimedia Internet KEYing (MIKEY). 12 IETF RFC 3550: RTP: A Transport Protocol for Real-Time Applications. 13 IETF RFC 3711: “The Secure Real-time Transport Protocol (SRTP)“. 14 3GPP TS 33.401: “3GPP System Architecture Evolution (
37、SAE); Security architecture“. 15 3GPP TS 23.228: “IP Multimedia Subsystem (IMS); Stage 2“. ETSI ETSI TS 133 179 V13.0.0 (2016-05)93GPP TS 33.179 version 13.0.0 Release 1316 3GPP TS 33.222: “Generic Authentication Architecture (GAA); Access to network application functions using Hypertext Transfer Pr
38、otocol over Transport Layer Security (HTTPS)“. 17 3GPP TS 33.220: “Generic Authentication Architecture (GAA); Generic Bootstrapping Architecture (GBA)“. 18 NIST FIPS 180-4: “Secure Hash Standard (SHS)“. 19 IETF RFC 6749: “The OAuth 2.0 Authorization Framework“. 20 IETF RFC 6750: “The OAuth 2.0 Autho
39、rization Framework: Bearer Token Usage“. 21 OpenID Connect 1.0: “OpenID Connect Core 1.0 incorporating errata set 1“, http:/ 22 IETF RFC 3830: “MIKEY: Multimedia Internet KEYing“. 23 IETF RFC 3602: “The AES-CBC Cipher Algorithm and Its Use with IPsec“. 24 IETF RFC 4771: “Integrity Transform Carrying
40、 Roll-Over Counter for the Secure Real-time Transport Protocol (SRTP)“. 25 IETF RFC 6043: “MIKEY-TICKET: Ticket-Based Modes of Key Distribution in Multimedia Internet KEYing (MIKEY)“. 26 IETF RFC 7714: AES-GCM Authenticated Encryption in the Secure Real-time Transport Protocol (SRTP). 27 W3C: “XML E
41、ncryption Syntax and Processing Version 1.1“, https:/www.w3.org/TR/xmlenc-core1/. 28 W3C: “XML Signature Syntax and Processing (Second Edition)“, http:/www.w3.org/TR/xmldsig-core/. 29 IETF RFC 5905: “Network Time Protocol Version 4: Protocol and Algorithms Specification“. 30 IETF RFC 5480: “Elliptic
42、 Curve Cryptography Subject Public Key Information“. 31 IETF RFC 6090: “Fundamental Elliptic Curve Cryptography Algorithms“. 32 IETF RFC 7519: “JSON Web Token (JWT)“. 33 IETF RFC 7662: “OAuth 2.0 Token Introspection“. 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present do
43、cument, the terms and definitions given in 3GPP TR 21.905 1 and the following apply. A term defined in the present document takes precedence over the definition of the same term, if any, in 3GPP TR 21.905 1. Floor: Floor(x) is the largest integer smaller than or equal to x. 3.2 Abbreviations For the
44、 purposes of the present document, the abbreviations given in 3GPP TR 21.905 1 and the following apply. An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in 3GPP TR 21.905 1. CSC Common Services Core GMK Group Master Key ETSI ETSI
45、TS 133 179 V13.0.0 (2016-05)103GPP TS 33.179 version 13.0.0 Release 13GMK-ID Group Master Key Identifier GMS Group Management Server GUK-ID Group User Key Identifier IdM Identity Management IdMS Identity Management Server KMS Key Management Server MBCP Media Burst Control Protocol MCPTT Mission Crit
46、ical Push to Talk MKI Master Key Identifier OIDC OpenID Connect PCK Private Call Key PCK-ID Private Call Key Identifier PSK Pre-Shared Key SRTCP Secure Real-Time Transport Control Protocol SRTP Secure Real-Time Transport Protocol SSRC Synchronization Source TBCP Talk Burst Control Protocol UID User
47、Identity 4 Overview of MCPTT Security 4.1 General 5 Authentication and Authorization 5.1 General The generic steps for MCPTT authentication is shown in figure 5.1-1. g104g28 g94g47g87g3g18g381g396g286g68g18g87g100g100g24g381g373g258g349g374g62g100g28g3g920g3g28g87g18g47g24g3g68g258g374g258g336g286g3
48、73g286g374g410g3g400g286g396g448g286g396g62g100g28g3g4g410g410g258g272g346g3g393g396g381g272g286g282g437g396g286g17g882g1005g856g3g94g47g87g3g90g286g336g349g400g410g396g258g410g349g381g374g3g258g374g282g3g4g437g410g346g286g374g410g349g272g258g410g349g381g374g17g882g1006g856g3g100g346g349g396g282g3g8
49、7g258g396g410g455g3g90g286g336g349g400g410g396g258g410g349g381g374g3g18g856g3g68g18g87g100g100g3g104g400g286g396g3g94g286g396g448g349g272g286g3g4g437g410g346g381g396g349g400g258g410g349g381g374g4g856g3g68g18g87g100g100g3g104g400g286g396g3g4g437g410g346g286g374g410g349g272g258g410g349g381g374Figure 5.1-1: MCPTT Authentication At UE power-on, the MCPTT UE performs LTE authentication as specified in TS 33.401 14. The MCPTT U
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