ITU-T X 1127-2017 Functional security requirements and architecture for mobile phone anti-theft measures (Study Group 17).pdf

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1、 I n t e r n a t i o n a l T e l e c o m m u n i c a t i o n U n i o n ITU-T X.1127 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (09/2017) SERIES X: DATA NETWORKS, OPEN SYSTEM COMMUNICATIONS AND SECURITY Secure applications and services (1) Mobile security Functional security requirements and arc

2、hitecture for mobile phone anti-theft measures Recommendation ITU-T X.1127 ITU-T X-SERIES RECOMMENDATIONS DATA NETWORKS, OPEN SYSTEM COMMUNICATIONS AND SECURITY PUBLIC DATA NETWORKS X.1X.199 OPEN SYSTEMS INTERCONNECTION X.200X.299 INTERWORKING BETWEEN NETWORKS X.300X.399 MESSAGE HANDLING SYSTEMS X.4

3、00X.499 DIRECTORY X.500X.599 OSI NETWORKING AND SYSTEM ASPECTS X.600X.699 OSI MANAGEMENT X.700X.799 SECURITY X.800X.849 OSI APPLICATIONS X.850X.899 OPEN DISTRIBUTED PROCESSING X.900X.999 INFORMATION AND NETWORK SECURITY General security aspects X.1000X.1029 Network security X.1030X.1049 Security man

4、agement X.1050X.1069 Telebiometrics X.1080X.1099 SECURE APPLICATIONS AND SERVICES (1) Multicast security X.1100X.1109 Home network security X.1110X.1119 Mobile security X.1120X.1139 Web security X.1140X.1149 Security protocols (1) X.1150X.1159 Peer-to-peer security X.1160X.1169 Networked ID security

5、 X.1170X.1179 IPTV security X.1180X.1199 CYBERSPACE SECURITY Cybersecurity X.1200X.1229 Countering spam X.1230X.1249 Identity management X.1250X.1279 SECURE APPLICATIONS AND SERVICES (2) Emergency communications X.1300X.1309 Ubiquitous sensor network security X.1310X.1319 Smart grid security X.1330X

6、.1339 Certified mail X.1340X.1349 Internet of things (IoT) security X.1360X.1369 Intelligent transportation system (ITS) security X.1370X.1389 Distributed legder technology security X.1400X.1429 Security protocols (2) X.1450X.1459 CYBERSECURITY INFORMATION EXCHANGE Overview of cybersecurity X.1500X.

7、1519 Vulnerability/state exchange X.1520X.1539 Event/incident/heuristics exchange X.1540X.1549 Exchange of policies X.1550X.1559 Heuristics and information request X.1560X.1569 Identification and discovery X.1570X.1579 Assured exchange X.1580X.1589 CLOUD COMPUTING SECURITY Overview of cloud computin

8、g security X.1600X.1601 Cloud computing security design X.1602X.1639 Cloud computing security best practices and guidelines X.1640X.1659 Cloud computing security implementation X.1660X.1679 Other cloud computing security X.1680X.1699 For further details, please refer to the list of ITU-T Recommendat

9、ions. Rec. ITU-T X.1127 (09/2017) i Recommendation ITU-T X.1127 Functional security requirements and architecture for mobile phone anti-theft measures Summary Recommendation ITU-T X.1127 focuses on the functional security requirements and functional architecture for smartphone anti-theft mechanisms

10、based on the general requirements described by the GSMA. Smartphones are rapidly proliferating and have become a nearly indispensable part of daily life. Unfortunately, many smartphone users have had their phones stolen. A smartphone anti-theft measure, i.e., a kill switch tool, for use in the event

11、 it is lost or stolen, should provide the capability to: remotely delete the authorized users data that is on the smartphone; render the smartphone inoperable to an unauthorized user; prevent reactivation without the authorized users permission to the extent technologically feasible; and reverse the

12、 inoperability if the smartphone is recovered by the authorized user, and restore user data on the smartphone to the extent feasible. History Edition Recommendation Approval Study Group Unique ID* 1.0 ITU-T X.1127 2017-09-06 17 11.1002/1000/13259 Keywords Anti-theft measures, mobile phone, security

13、requirements. * To access the Recommendation, type the URL http:/handle.itu.int/ in the address field of your web browser, followed by the Recommendations unique ID. For example, http:/handle.itu.int/11.1002/1000/11830-en. ii Rec. ITU-T X.1127 (09/2017) FOREWORD The International Telecommunication U

14、nion (ITU) is the United Nations specialized agency in the field of telecommunications, information and communication technologies (ICTs). The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for studying technical, operating and tariff questions

15、 and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Assembly (WTSA), which meets every four years, establishes the topics for study by the ITU-T study groups which, in turn, produce Recommendations on

16、these topics. The approval of ITU-T Recommendations is covered by the procedure laid down in WTSA Resolution 1. In some areas of information technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. NOTE In this Recommendation, the e

17、xpression “Administration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. Compliance with this Recommendation is voluntary. However, the Recommendation may contain certain mandatory provisions (to ensure, e.g., interoperability or appli

18、cability) and compliance with the Recommendation is achieved when all of these mandatory provisions are met. The words “shall“ or some other obligatory language such as “must“ and the negative equivalents are used to express requirements. The use of such words does not suggest that compliance with t

19、he Recommendation is required of any party. INTELLECTUAL PROPERTY RIGHTSITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. ITU takes no position concerning the evidence, validity or applicabi

20、lity of claimed Intellectual Property Rights, whether asserted by ITU members or others outside of the Recommendation development process. As of the date of approval of this Recommendation, ITU had not received notice of intellectual property, protected by patents, which may be required to implement

21、 this Recommendation. However, implementers are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2017 All rights reserved. No part of this publication may be reproduced, by any means

22、whatsoever, without the prior written permission of ITU. Rec. ITU-T X.1127 (09/2017) iii Table of Contents Page 1 Scope . 1 2 References . 1 3 Definitions 1 3.1 Terms defined elsewhere 1 3.2 Terms defined in this Recommendation . 2 4 Abbreviations and acronyms 2 5 Conventions 3 6 Overview of anti-th

23、eft measures . 3 6.1 Anti-theft measures 3 6.2 High-level requirements for anti-theft measures 4 7 Functional architecture for mobile phone anti-theft measures . 5 7.1 Threats for mobile phone anti-theft measures 5 7.2 Key security functions for mobile phone anti-theft measures 5 7.3 Functional arch

24、itecture for mobile device anti-theft measures 6 7.4 Mechanisms for mobile phone anti-theft measures 7 8 Functional security requirements 9 8.1 Overview 9 8.2 Functional security requirements for the mobile device owner . 9 8.3 Functional security requirements for the authorized server . 10 8.4 Func

25、tional security requirements for the stolen mobile device 10 8.5 Functional security requirements for the backup server . 10 Appendix I General requirements for anti-theft measures 12 I.1 Device owner 12 I.2 Server 12 I.3 Mobile device . 13 I.4 Device manufacture 13 Appendix II Additional security r

26、equirements for anti-theft measures 14 II.1 Requirements for backup server . 14 Appendix III 15 III.1 Threats between the Anti-theft specific threats mobile device owner and the authorized server . 15 III.2 Threats between the authorized server and the anti-theft disabling agent 15 III.3 Threats bet

27、ween the anti-theft disabling agent and the backup server . 15 Appendix IV Scenario for anti-theft measures . 16 IV.1 Types of disabling features of mobile device . 16 IV.2 Enabling for stolen/lost mobile device . 16 IV.3 Disabling scenario for stolen/lost mobile device 16 iv Rec. ITU-T X.1127 (09/2

28、017) Appendix V TLS profile for anti-theft measures 17 Page V.1 TLS protocol requirement 17 V.2 TLS cipher suites for interoperability . 17 V.3 Digital certificates 17 Appendix VI Overview of OMA device management . 18 VI.1 OMA device management specification 18 Bibliography. 19 Rec. ITU-T X.1127 (0

29、9/2017) 1 Recommendation ITU-T X.1127 Functional security requirements and architecture for mobile phone anti-theft measures 1 Scope This Recommendation addresses the functional security requirements and architecture for the smartphone anti-theft measure (i.e., a kill switch), which allows users to

30、remotely delete their personal data or disable stolen or lost smartphone devices. It is anticipated that functional security requirements and functional architecture identified in this Recommendation can be applicable to smartphones which are able to provide anti-theft measures reflecting the desire

31、s of smartphones customers, smartphone manufactures and mobile service operators. This Recommendation focuses on the functional requirements, functional architecture, and anti-theft mechanisms. It uses a reference model consisting of the device owner, the authorized server, the backup server, and lo

32、st or stolen devices. Anti-theft specific threats are described in Appendix III. This Recommendation does not modify the general requirements for smartphone anti-theft features developed by GSMA b-GSMA. 2 References The following ITU-T Recommendations and other references contain provisions which, t

33、hrough reference in this text, constitute provisions of this Recommendation. At the time of publication, the editions indicated were valid. All Recommendations and other references are subject to revision; users of this Recommendation are therefore encouraged to investigate the possibility of applyi

34、ng the most recent edition of the Recommendations and other references listed below. A list of the currently valid ITU-T Recommendations is regularly published. The reference to a document within this Recommendation does not give it, as a stand-alone document, the status of a Recommendation. ITU-T X

35、.1254 Recommendation ITU-T X.1254 (2012), Entity authentication assurance framework. 3 Definitions 3.1 Terms defined elsewhere This Recommendation uses the following terms defined elsewhere: 3.1.1 data sanitization b-NIST SP 800-88: Actions taken to render data written on media unrecoverable by both

36、 ordinary and extraordinary means. 3.1.2 entity authentication assurance (EAA) ITU-T X.1254: A degree of confidence reached in the authentication process that the entity is what it is, or is expected to be (this definition is based on the authentication assurance definition given in b-ITU-T X.1252).

37、 NOTE The confidence is based on the degree of confidence in the binding between the entity and the identity that is presented. 3.1.3 identity b-ITU-T X.1250: The representation of an entity in the form of one or more information elements which allow the entity(s) to be sufficiently distinguished wi

38、thin context. For IdM purposes, the term identity is understood as contextual identity (subset of attributes), i.e., the variety of attributes is limited by a framework with defined boundary conditions (the context) in which the entity exists and interacts. 2 Rec. ITU-T X.1127 (09/2017) NOTE Each en

39、tity is represented by one holistic identity, which comprises all possible information elements characterizing such entity (the attributes). However, this holistic identity is a theoretical issue and eludes any description and practical usage because the number of all possible attributes is indefini

40、te. 3.1.4 kill switch b-GSMA: A way to disable crucial functions of a mobile device. NOTE It is essentially a function within the mobile equipment device, so that if triggered e.g., by a message of some format is sent to it, then the mobile device will cease to operate as it is intended to, and can

41、only be reactivated or reused if the device owner authorizes the reactivation of the device. 3.1.5 mobile phone b-ITU-T X-Sup.19: An electronic device used for making phone calls and sending text messages across a wide geographic area through radio access to public mobile networks, while allowing th

42、e user to be mobile. 3.1.6 smartphone b-ITU-T X-Sup.19: A mobile phone with powerful computing capability, heterogeneous connectivity and advanced operating system providing a platform for third-party applications. 3.1.7 threat b-ISO/IEC 27000: potential cause of an unwanted incident, which may resu

43、lt in harm to a system or organization 3.1.8 tunnel b-ISO/IEC 27033-1: data path between networked devices which is established across an existing network infrastructure NOTE Tunnels can be established using techniques such as protocol encapsulation, label switching, or virtual circuits. 3.2 Terms d

44、efined in this Recommendation This Recommendation defines the following terms: 3.2.1 device hardware: The physical components that together make a functioning mobile device including screen, keys, printed circuit board, chips, SIM card, removable storage, etc. 3.2.2 device software: All software pro

45、grams on the device and SIM card, including applications, operating system, boot loader, boot-ROM, and firmware. 3.2.3 device user: The authorized user of the mobile device. 3.2.4 secure tunneling: A protocol that allows for the secure transfer of data or message from one network location to another

46、. NOTE Secure tunneling generally supports entity authentication, message integrity, and message confidentiality. 4 Abbreviations and acronyms This Recommendation uses the following abbreviations and acronyms: ATM Automated Teller Machine CRL Certificate Revocation List DER Distinguished Encoding Ru

47、les DDoS Distributed Denial-of-Service DM Device Management EAA Entity Authentication Assurance GPS Global Positioning System GSMA Groupe Speciale Mobile Association HTTP Hyper-Text Transfer Protocol LoA Level of Assurance Rec. ITU-T X.1127 (09/2017) 3 MAC Message Authentication Code OCSP Online Cer

48、tificate Status Protocol OMA Open Mobile Alliance OTP One-Time Password PII Personally Identifiable Information PKI Public-Key Infrastructure SIM Subscriber Identity Module SMS-SC Short Message Service Service Centre SSL Secure Socket Layer TCP Transmission Control Protocol TFA Three-Factor Authenti

49、cation TLS Transport Layer Security U Universal UICC Universal Integrated Circuit Card USSD Unstructured Supplementary Service Data 2FA 2-Factor Authentication 5 Conventions This Recommendation applies the following verbal forms for the expression of provisions: a) “shall“ indicates a requirement b) “should“ indicates a recommendation c) “may“ indicates a permission d) “can“ indicates a possibility and a capability. 6 Overview of anti-theft measures 6.1 Anti-