1、 ETSI TS 103 462 V1.1.1 (2018-07) Lawful Interception (LI); Inter LEMF Handover Interface TECHNICAL SPECIFICATION ETSI ETSI TS 103 462 V1.1.1 (2018-07)2 Reference DTS/LI-00134 Keywords handover, IP, lawful interception, security ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel
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7、reproduction in all media. ETSI 2018. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are trademarks of ETSI registered for the benefit of its Members. 3GPPTM and LTETMare trademarks of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. oneM2M l
8、ogo is protected for the benefit of its Members. GSMand the GSM logo are trademarks registered and owned by the GSM Association. ETSI ETSI TS 103 462 V1.1.1 (2018-07)3 Contents Intellectual Property Rights 4g3Foreword . 4g3Modal verbs terminology 4g3Introduction 4g31 Scope 5g32 References 5g32.1 Nor
9、mative references . 5g32.2 Informative references 6g33 Definitions and abbreviations . 6g33.1 Definitions 6g33.2 Abbreviations . 7g34 General aspects . 7g35 Architecture overview and functional description . 8g36 Delivery Handling 9g36.1 General . 9g36.2 Description and purpose of the header fields
10、. 9g36.2.1 Inter LEMF LIID 9g36.2.2 Communication Identifier . 10g36.2.3 Sequence Number . 10g36.2.4 Timestamp 10g36.3 Integrity 10g36.4 Payload encryption . 10g36.5 Reliability . 10g36.6 Error Handling 10g36.7 Keep alive . 10g37 Responding Interworking Function (resIWF) 11g37.1 General . 11g37.2 En
11、capsulation function . 11g37.3 Mapping function . 11g37.3.1 General 11g37.3.2 Timestamp 11g37.3.3 Location information 11g37.4 Interoperability function . 12g38 Encapsulation Handling . 12g38.1 General . 12g39 Transport layer . 12g3Annex A (informative): Operational roles 14g3A.1 Introduction 14g3A.
12、2 Requesting party (reqLEA/reqAA) 15g3A.3 Responding party (resLEA/resAA) 15g3A.4 Executing Communication Service Provider . 15g3Annex B (normative): Inter LEMF Handover (ILHI) ASN.1 16g3Annex C (informative): Change History 18g3History 19 ETSI ETSI TS 103 462 V1.1.1 (2018-07)4 Intellectual Property
13、 Rights Essential patents IPRs essential or potentially essential to normative deliverables 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
14、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/). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches
15、, 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 document. Trademarks The present document may include trademarks and/or
16、tradenames which are asserted and/or registered by their owners. ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does not c
17、onstitute an endorsement by ETSI of products, services or organizations associated with those trademarks. Foreword This Technical Specification (TS) has been produced by ETSI Technical Committee Lawful Interception (LI). Modal verbs terminology In the present document “shall“, “shall not“, “should“,
18、 “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 forms for the expression of provisions). “must“ and “must not“ are NOT allowed in ETSI deliverables except when used in direct citation. Introd
19、uction The objective of the present document is to form the basis for a standardized handover interface, that will deliver the LI and/or RD information via IP-based networks between Law Enforcement Authorities under various European treaties and local regulations in case of: legal assistance; legal
20、assistance regarding the European Investigation Order in criminal matters i.1; (bilateral) administrative assistance. The present document is intended to cover the following: transmission of intercepted Content of Communication (CC) and Intercept Related Information (IRI); NOTE: This includes data t
21、hat is already processed or stored on the LI system. transmission of traffic and location data (RD), administrative data according to ETSI TS 102 657 3 and error codes according to ETSI TS 102 232-1 6 are for further study. Besides the EIO Directive, there is also a need in some countries to exchang
22、e stored or LI data in real time between different LEMFs or between a primary LEMF and a secondary analysis framework (this forms another use case for the interface). ETSI ETSI TS 103 462 V1.1.1 (2018-07)5 1 Scope The present document specifies the LEMF to LEMF interface to support (as a minimum) Eu
23、ropean Investigation Orders (EIOs) related to LI and/or RD. The present document aims to be capable of securely handling real-time and stored data transfer between LEMFs in accordance with ETSI TS 102 232 parts 1 6 to 7 12 and the related ETSI TS 133 108 5 for LI. In the present document RD is for f
24、urther study. Local LI handover interfaces frequently use dedicated networks for delivery with local specific security features. With the EIO Directive in place, there is a need to have a common Handover Interface to allow real-time exchange between LEMFs that can be located in different countries,
25、under different jurisdictions. 2 References 2.1 Normative references References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of
26、 the referenced document (including any amendments) applies. Referenced documents which are not found to be publicly available in the expected location might be found at https:/docbox.etsi.org/Reference/. NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI
27、cannot guarantee their long term validity. The following referenced documents are necessary for the application of the present document. 1 ETSI TS 101 671: “Lawful Interception (LI); Handover interface for the lawful interception of telecommunications traffic“. 2 ETSI TS 103 280: “Lawful Interceptio
28、n (LI); Dictionary for common parameters“. 3 ETSI TS 102 657: “Lawful Interception (LI); Retained data handling; Handover interface for the request and delivery of retained data“. 4 ETSI TS 103 307: “CYBER; Security aspects for LI and RD Interfaces“. 5 ETSI TS 133 108: “Universal Mobile Telecommunic
29、ations System (UMTS); LTE; 3G security; Handover interface for Lawful Interception (LI) (3GPP TS 33.108)“. 6 ETSI TS 102 232-1: “Lawful Interception (LI); Handover Interface and Service-Specific Details (SSD) for IP delivery; Part 1: Handover specification for IP delivery“. 7 ETSI TS 102 232-2: “Law
30、ful Interception (LI); Handover Interface and Service-Specific Details (SSD) for IP delivery; Part 2: Service-specific details for messaging services“. 8 ETSI TS 102 232-3: “Lawful Interception (LI); Handover Interface and Service-Specific Details (SSD) for IP delivery; Part 3: Service-specific deta
31、ils for internet access services“. 9 ETSI TS 102 232-4: “Lawful Interception (LI); Handover Interface and Service-Specific Details (SSD) for IP delivery; Part 4: Service-specific details for Layer 2 services“. 10 ETSI TS 102 232-5: “Lawful Interception (LI); Handover Interface and Service-Specific D
32、etails (SSD) for IP delivery; Part 5: Service-specific details for IP Multimedia Services“. 11 ETSI TS 102 232-6: “Lawful Interception (LI); Handover Interface and Service-Specific Details (SSD) for IP delivery; Part 6: Service-specific details for PSTN/ISDN services“. ETSI ETSI TS 103 462 V1.1.1 (2
33、018-07)6 12 ETSI TS 102 232-7: “Lawful Interception (LI); Handover Interface and Service-Specific Details (SSD) for IP delivery; Part 7: Service-specific details for Mobile Services“. 13 ISO 3166-1: “Codes for the representation of names of countries and their subdivisions; Part 1: Country codes“. 1
34、4 Recommendation ITU-T X.680: “Information Technology - Abstract Syntax Notation One (ASN.1) ASN.1 Object Identifiers in Lawful Interception and Retained data handling Specifications“. 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the terms and definitions
35、 given in ETSI TS 101 671 1, ETSI TS 102 232-1 6 and the following apply: NOTE: This may contain additional information. mapping: function that maps every element of a given set to a distinct element of another set mappingInfo: output of the mapping function originalPayload: optional output part of
36、the interoperability function containing the unmodified received data real time: information and communication technologies that are able to generate and deliver information in a time-frame similar to the real-life process that it is assisting requesting AA (reqAA): Authorized Authority from the cou
37、ntry that takes the initiative for the LI request requesting IWF (reqIWF): function to format data from ILHI format into local format requesting LEA (reqLEA): Law Enforcement Agency from the country that takes the initiative for the LI request requesting LEMF (reqLEMF): Law Enforcement Monitoring Fa
38、cility from the country that takes the initiative for the LI request resPayload: mandatory output part of the interoperability function responding AA (resAA): Authorized Authority from the country that verifies the requesting party and translates the received warrant into a national warrant respondi
39、ng IWF (resIWF): function to format data into ILHI format ETSI ETSI TS 103 462 V1.1.1 (2018-07)7 responding LEA (resLEA): Law Enforcement Agency from the country that verifies the requesting party and translates the received warrant into a national warrant responding LEMF (resLEMF): Law Enforcement
40、Monitoring Facility from the country that verifies the requesting party and translates the received warrant into a national warrant 3.2 Abbreviations For the purposes of the present document, the following abbreviations apply: 3GPP Third Generation Partnership Project AA Authorized Authority ADMF Ad
41、ministration Function (at CSP) ASCII American Standard Code for Information Interchange ASN.1 Abstract Syntax Notation One CC IW Content of Communication Interworking CC Content of Communication CIN Communications Identity Number CS Circuit SwitchedCSP Communications Service Provider EcsF Encapsulat
42、ionFunction EIO European Investigation Order ID IDentifier ILHI Inter LEMF Handover Interface IMS IM Subsystem IopF Interoperability Function IP Internet ProtocolIRI IW Intercept Related Information Interworking IRI Intercept Related Information LEA Law Enforcement AgencyLEMF Law Enforcement Monitor
43、ing Facility LI Lawful Interception LIID Lawful Interception IDentifier MapF Mapping Function MF Mediation Function (at CSP) NID Network IDentifier OID Object IdentifierPDU Protocol Data Unit PS-PDU Packet Switched - Protocol Data Unit RD IW Retained Data InterWorking RD Retained Data reqAA requesti
44、ng Authorized Authority reqIWF rrequesting InterWorking Function reqLEMF requesting LEMF resAA responding Authorized Authority resIWF responding InterWorking Function resLEMF responding LEMF TCP Transmission Control Protocol TLS Transport Layer Security VPN Virtual Private Network WGS84 World Geodet
45、ic System 1984 4 General aspects The Inter LEMF Handover Interface (ILHI) for LI is based on the ETSI TS 102 232 parts 1 6 to 7 12 for requesting data from the responding LEMF. ETSI TS 133 108 5 data is provided by using mechanism defined by ETSI TS 102 232-1 6 and ETSI TS 102 232-7 12. Figure 4.1 i
46、llustrates the ILHI in principle; a description of the legal assistance can be found in annex A. ETSI ETSI TS 103 462 V1.1.1 (2018-07)8 Figure 4.1: Functional block diagram showing Inter LEMF Handover Interface NOTE 1: Handover interfaces between CSP and resLEMF are out of scope of the present docum
47、ent. The resLEMF sends the data via ILHI to the reqLEMF ensuring interoperability. The reqLEMF receives the data transmitted by the resLEMF via the ILHI and processes the data into local format if necessary. NOTE 2: If reqLEMF and resLEMF are in the same countries the term “national“ equals the term
48、 “local“. Delivery of data shall be done without undue delay assuming that there is sufficient bandwidth available. 5 Architecture overview and functional description Figure 5.1 shows the architecture overview of the ILHI. Figure 5.1: Architecture overview of Inter LEMF Handover Interface (ILHI) The
49、 resLEMF sends the data in ILHI format to the reqLEMF. In addition, control messages (e.g. error codes, keep alive messages) can be sent between resLEMF and reqLEMF via ILHI. For data processing an interworking function is defined for the resLEMF and for the reqLEMF. The responding interworking function (resIWF) shall process the data to provide interoperability. For further details see clause 7. NOTE 1: The resIWF could need to transcode data for interoperability reasons. The transcoding is out of the scope of
