1、 International Telecommunication Union ITU-T X.1152TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (05/2008) SERIES X: DATA NETWORKS, OPEN SYSTEM COMMUNICATIONS AND SECURITY Telecommunication security Secure end-to-end data communication techniques using trusted third party services Recommendation I
2、TU-T X.1152 ITU-T X-SERIES RECOMMENDATIONS DATA NETWORKS, OPEN SYSTEM COMMUNICATIONS AND SECURITY PUBLIC DATA NETWORKS Services and facilities X.1X.19 Interfaces X.20X.49 Transmission, signalling and switching X.50X.89 Network aspects X.90X.149 Maintenance X.150X.179 Administrative arrangements X.18
3、0X.199 OPEN SYSTEMS INTERCONNECTION Model and notation X.200X.209 Service definitions X.210X.219 Connection-mode protocol specifications X.220X.229 Connectionless-mode protocol specifications X.230X.239 PICS proformas X.240X.259 Protocol Identification X.260X.269 Security Protocols X.270X.279 Layer
4、Managed Objects X.280X.289 Conformance testing X.290X.299 INTERWORKING BETWEEN NETWORKS General X.300X.349 Satellite data transmission systems X.350X.369 IP-based networks X.370X.379 MESSAGE HANDLING SYSTEMS X.400X.499DIRECTORY X.500X.599 OSI NETWORKING AND SYSTEM ASPECTS Networking X.600X.629 Effic
5、iency X.630X.639 Quality of service X.640X.649 Naming, Addressing and Registration X.650X.679 Abstract Syntax Notation One (ASN.1) X.680X.699 OSI MANAGEMENT Systems Management framework and architecture X.700X.709 Management Communication Service and Protocol X.710X.719 Structure of Management Infor
6、mation X.720X.729 Management functions and ODMA functions X.730X.799 SECURITY X.800X.849 OSI APPLICATIONS Commitment, Concurrency and Recovery X.850X.859 Transaction processing X.860X.879 Remote operations X.880X.889 Generic applications of ASN.1 X.890X.899 OPEN DISTRIBUTED PROCESSING X.900X.999 TEL
7、ECOMMUNICATION SECURITY X.1000 For further details, please refer to the list of ITU-T Recommendations. Rec. ITU-T X.1152 (05/2008) i Recommendation ITU-T X.1152 Secure end-to-end data communication techniques using trusted third party services Summary Recommendation ITU-T X.1152 defines basic interf
8、aces, interactions and security considerations for secure end-to-end data communication using on-line trusted third party (TTP) services. This Recommendation also identifies online TTP services which can be used to support secure end-to-end data communication between two entities. Source Recommendat
9、ion ITU-T X.1152 was approved on 29 May 2008 by ITU-T Study Group 17 (2005-2008) under Recommendation ITU-T A.8 procedure. ii Rec. ITU-T X.1152 (05/2008) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, information
10、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 and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide
11、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 these topics. The approval of ITU-T Recommendations is covered by the procedure laid down in WTSA Re
12、solution 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 expression “Administration“ is used for conciseness to indicate both a telecommunication administrati
13、on 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 applicability) and compliance with the Recommendation is achieved when all of these mandatory provisions ar
14、e 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 the Recommendation is required of any party. INTELLECTUAL PROPERTY RIGHTS ITU draws attention to the po
15、ssibility 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 applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others outside of th
16、e 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 this Recommendation. However, implementers are cautioned that this may not represent the latest info
17、rmation and are therefore strongly urged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2009 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. Rec. ITU-T X.1152 (05/2008) iii CONTENTS Pag
18、e 1 Scope 1 2 References. 1 3 Definitions 1 3.1 Terms defined elsewhere 1 3.2 Terms defined in this Recommendation. 3 4 Abbreviations and acronyms 3 5 Convention 4 6 TTP services for secure end-to-end data communication. 4 7 System model . 5 8 Processes of a secure end-to-end data communication. 5 8
19、.1 Establishment phase . 5 8.2 Data transmission phase . 6 8.3 Termination phase 7 9 Online TTP services to support secure end-to-end data communication . 7 9.1 TTP services for establishment phase 7 9.2 TTP services for data transmission phase 8 9.3 TTP services for termination phase 9 9.4 Possibil
20、ities of online TTP services to support secure end-to-end data communication . 9 9.5 Integration of TTP services 9 10 Basic interfaces for secure end-to-end data communication based on online TTP 10 10.1 Requester-TTP interface. 11 10.2 Responder-TTP interface 11 10.3 Requester-Responder interface.
21、11 10.4 TTP internal interface. 11 10.5 Requester internal interface 12 10.6 Responder internal interface. 12 11 Basic interactions for secure end-to-end data communication based on online TTP. 12 11.1 Preconditions 13 11.2 Establishment of control path. 13 11.3 Establishment of secure data communic
22、ation path 14 11.4 Secure data transmission 15 11.5 Audit trail creation 16 11.6 Termination of secure data communication path . 17 11.7 Termination of control path 18 12 Security considerations. 19 12.1 Requester-TTP interface. 19 iv Rec. ITU-T X.1152 (05/2008) Page 12.2 Responder-TTP interface 19
23、12.3 Establishment of the secure data communication path between entities 19 12.4 Stored data in the entity 19 12.5 Stored data in the TTP 19 Annex A Re-establishment . 20 A.1 Re-establishment process of a secure end-to-end data communication . 20 A.2 TTP services for re-establishment process. 20 An
24、nex B Entity level granularity and communication level granularity 21 Appendix I Service scenario . 22 Appendix II Relationship among this Recommendation, ITU-T X.842 and the Liberty Alliance Project 23 Bibliography 24 Rec. ITU-T X.1152 (05/2008) 1 Recommendation ITU-T X.1152 Secure end-to-end data
25、communication techniques using trusted third party services 1 Scope This Recommendation defines basic interfaces, interactions and security considerations of online trusted third party (TTP) services for secure end-to-end data communication. This Recommendation also identifies online TTP services wh
26、ich can be used to support secure end-to-end data communication which is a connection-oriented communication between two entities with no eavesdropping, injection and modification of data, unauthorized access and repudiation. 2 References The following ITU-T Recommendations and other references cont
27、ain provisions which, through 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 th
28、e possibility of applying the most recent edition of the Recommendations and other references listed below. A list of the currently valid ITU-T Recommendations is published regularly. The reference to a document within this Recommendation does not give it, as a stand-alone document, the status of a
29、Recommendation. ITU-T X.800 Recommendation ITU-T X.800 (1991), Security architecture for Open Systems Interconnection for CCITT applications. ITU-T X.805 Recommendation ITU-T X.805 (2003), Security architecture for systems providing end-to-end communications. ITU-T X.842 Recommendation ITU-T X.842 (
30、2000) | ISO/IEC TR 14516:2002, Information technology Security techniques Guidelines for the use and management of trusted third party services. ITU-T X.1121 Recommendation ITU-T X.1121 (2004), Framework of security technologies for mobile end-to-end data communications. 3 Definitions 3.1 Terms defi
31、ned elsewhere This Recommendation uses the following terms defined elsewhere: 3.1.1 access control ITU-T X.800: The prevention of unauthorized use of a resource, including the prevention of use of a resource in an unauthorized manner. 3.1.2 audit trail ITU-T X.800: Data collected and potentially use
32、d to facilitate a security audit. 3.1.3 authentication b-ITU-T X.811: The provision of assurance of the claimed identity of an entity. 3.1.4 authorization ITU-T X.800: The granting of rights, which includes the granting of access based on access rights. 3.1.5 availability ITU-T X.800: The property o
33、f being accessible and useable upon demand by an authorized entity. 3.1.6 certification service b-ITU-T X.843: The service of creating and assigning certificates performed by a CA. 2 Rec. ITU-T X.1152 (05/2008) 3.1.7 confidentiality ITU-T X.800: The property that information is not made available or
34、 disclosed to unauthorized individuals, entities or processes. 3.1.8 credentials ITU-T X.800: Data that is transferred to establish the claimed identity of an entity. 3.1.9 directory service b-ITU-T X.843: A service to search and retrieve information from a catalogue of well defined objects, which m
35、ay contain information about certificates, telephone numbers, access conditions, addresses, etc. An example is provided by a directory service conforming to Rec. ITU-T X.500. 3.1.10 eavesdropping ITU-T X.1121: Anonymous attackers can actively intercept transmitted data, causing a leakage of data. 3.
36、1.11 electronic digital archiving service ITU-T X.842: The electronic digital archiving service is a service provided by a document recorder, at which electronic documents are registered for safekeeping and for retention as a permanent record. The archiving of electronic documents in encrypted form
37、may be required in some instances, especially where the data is highly sensitive and requires extra protection. 3.1.12 electronic notary public service ITU-T X.842: Notary public services are high level services that make use of a number of basic services such as time stamping, certification, direct
38、ory service, digital archiving and non-repudiation. In principle a document will be given to the TTP, and the TTP attests or certifies this document by use of digital signatures or some other means. Part of this service may be a directory service, where the information, such as formerly certified do
39、cuments, may be retrieved from a database or directory. 3.1.13 injection and modification of data ITU-T X.1121: This occurs when an unauthorized entity inserts, changes or deletes information transmitted between a mobile terminal and an application server. The unauthorized entity could be a person,
40、a program, or a computer. 3.1.14 integrity ITU-T X.800: The property that data has not been altered or destroyed in an unauthorized manner. 3.1.15 key distribution service ITU-T X.842: The purpose of a key distribution service is to distribute keys securely to authorized entities. Depending on the T
41、TPs security policy, keys may have to be forwarded to other TTP services, e.g. a directory service. These services could be provided by the same or another TTP. 3.1.16 key generation service ITU-T X.842: This service is invoked to generate keys in a secure way for a particular cryptographic algorith
42、m. 3.1.17 key management ITU-T X.800: The generation, storage, distribution, deletion, archiving and application of keys in accordance with a security policy. 3.1.18 on-line TTP service ITU-T X.842: The TTP is involved in all first time secure exchanges between the entities. However, the TTP is not
43、required for follow-up exchanges and is not positioned in the communication path between the entities. 3.1.19 repudiation ITU-T X.1121: This attack occurs when a sender or receiver denies the fact of having transmitted or received a message, respectively. 3.1.20 security association b-ITU-T X.803: A
44、 relationship between two or more entities for which there exist attributes (state information and rules) to govern the provision of security services involving those entities. 3.1.21 security domain b-ITU-T X.803: A set of elements, a security policy, a security authority and a set of security rele
45、vant activities in which the set of elements are subject to the security policy, administered by the security authority, for the specified activities. Rec. ITU-T X.1152 (05/2008) 3 3.1.22 security policy ITU-T X.800: The set of criteria for the provision of security services (see also identity-based
46、 and rule-based security policy). 3.1.23 time stamping service ITU-T X.842: The time stamping service seals a digital document by cryptographically binding a trusted time to it (typically to a hash representation of it called “message digest“ or “message imprint“), thus providing a means to detect a
47、ny modification, such as backdating and avoid replay attacks or other forgeries. 3.1.24 trusted third party b-ITU-T X.810: The trusted third party is an organisation or its agent that provides one or more security services, and is trusted by other entities with respect to activities related to these
48、 security services. 3.1.25 unauthorized access ITU-T X.1121: This threat occurs when an illegal entity gains access to an application server by masquerading as a real mobile user. 3.2 Terms defined in this Recommendation This Recommendation defines the following terms: 3.2.1 certified credential: Ce
49、rtified credential is the credential that is authorized by TTP. 3.2.2 control path: Control path is the route between one entity and TTP to control the secure data communication path. 3.2.3 credential mapping service: Credential mapping service is a TTP service that translates an entitys credential for one security domain to the entitys credential for another security domain. 3.2.4 location service: Location service is a TTP service that provides information with regard to the curre
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