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    ETSI TS 155 226-2017 Digital cellular telecommunications system (Phase 2+) (GSM) 3G Security Specification of the A5 4 Encryption Algorithms for GSM and ECSD and the GEA4 Encryptio.pdf

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    ETSI TS 155 226-2017 Digital cellular telecommunications system (Phase 2+) (GSM) 3G Security Specification of the A5 4 Encryption Algorithms for GSM and ECSD and the GEA4 Encryptio.pdf

    1、 ETSI TS 155 226 V14.0.0 (2017-04) Digital cellular telecommunications system (Phase 2+) (GSM); 3G Security; Specification of the A5/4 Encryption Algorithms for GSM and ECSD, and the GEA4 Encryption Algorithm for GPRS (3GPP TS 55.226 version 14.0.0 Release 14) TECHNICAL SPECIFICATION GLOBAL SYSTEM F

    2、OR MOBILE COMMUNICATIONSRETSI ETSI TS 155 226 V14.0.0 (2017-04)13GPP TS 55.226 version 14.0.0 Release 14Reference RTS/TSGS-0355226ve00 Keywords GSM,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 -

    3、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 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 electro

    4、nic 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 perceived difference in contents between such versions and/or in print, the only prevailing document is the print of the Portable Document Format (PDF)

    5、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 revision or change of status. Information on the current status of this and other ETSI documents is available at https:/portal.etsi.org/TB/ETSIDeliverab

    6、leStatus.aspx If you find errors in the present document, please send your comment to one of the following services: https:/portal.etsi.org/People/CommiteeSupportStaff.aspx Copyright Notification No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including p

    7、hotocopying and microfilm except as authorized by written permission of ETSI. The content of the PDF version shall not be modified without the written authorization of ETSI. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institu

    8、te 2017. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are Trade Marks of ETSI registered for 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. GSM and the GSM logo are Trade Marks

    9、 registered and owned by the GSM Association. ETSI ETSI TS 155 226 V14.0.0 (2017-04)23GPP TS 55.226 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

    10、, 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 potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updates are avai

    11、lable 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. 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 ar

    12、e, or may be, or may become, essential to the present document. 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 id

    13、entities. These should be interpreted as being references 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“

    14、, “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. ETSI

    15、ETSI TS 155 226 V14.0.0 (2017-04)33GPP TS 55.226 version 14.0.0 Release 14Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 4g3Introduction 4g31 Scope 5g32 References 5g33 Technical provisions. 5g3Annex F (informative): Change history . 6g3History 7g3ETSI E

    16、TSI TS 155 226 V14.0.0 (2017-04)43GPP TS 55.226 version 14.0.0 Release 14Foreword This Technical Specification has been produced by the 3rdGeneration Partnership Project (3GPP). The contents of the present document are subject to continuing work within the TSG and may change following formal TSG app

    17、roval. 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: Version x.y.z where: x the first digit: 1 presented to TSG for information; 2 presented to TSG for approval; 3

    18、 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 third digit is incremented when editorial only changes have been incorporated in the document. Introduction

    19、In this document are specified three ciphering algorithms: A5/4 for GSM, A5/4 for ECSD, and GEA4 for GPRS (including EGPRS). The algorithms are stream ciphers that are used to encrypt/decrypt blocks of data under a confidentiality key KC. Each of these algorithms is based on the KASUMI algorithm tha

    20、t is specified in TS 35.202 5. The three algorithms are all very similar. We first define a core keystream generator function KGCORE (clause 4); we then specify each of the three algorithms in turn (clauses 5, 6 and 7) in terms of this core function. Note that: - GSM A5/4 is the same algorithms as G

    21、SM A5/3 but with KLEN changed from 64 to 128 bits. - and ECSD A5/4 is the same algorithms as ECSD A5/3 but with KLEN changed from 64 to 128 bits. - and GEA 4 is the same algorithms as GEA3 but with KLEN changed from 64 to 128 bits. ETSI ETSI TS 155 226 V14.0.0 (2017-04)53GPP TS 55.226 version 14.0.0

    22、 Release 141 Scope This specification of the A5/4 encryption algorithms for GSM and ECSD, and of the GEA4 encryption algorithm for GPRS has been derived from TS 55.516 1: Specification of the A5/3 Encryption Algorithms for GSM and ECSD, and the GEA3 Encryption Algorithm for GPRS. The only essential

    23、change is the change of external key length input from 64 bits to 128 bits. This document should be read in conjunction with the entire specification of the A5/3 and GEA3 algorithms: - Specification of the A5/3 Encryption Algorithms for GSM and ECSD, and the GEA3 Encryption Algorithm for GPRS. Docum

    24、ent 1: A5/3 and GEA3 Specifications. - Specification of the A5/3 Encryption Algorithms for GSM and ECSD, and the GEA3 Encryption Algorithm for GPRS. Document 2: Implementors Test Data. - Specification of the A5/3 Encryption Algorithms for GSM and ECSD, and the GEA3 Encryption Algorithm for GPRS. Doc

    25、ument 3: Design Conformance Test Data. The normative part of the specification of the block cipher (KASUMI) on which the A5/3, A5/4, GEA3 and GEA4 algorithms are based can be found in TS 35.202 5. 2 References The following documents contain provisions which, through reference in this text, constitu

    26、te 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 revisions do not apply. - For a non-specific reference, the latest version applies. In the case of

    27、 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 to 5 (void) 6 3GPP Task Force Specification: “3G Security; Specification of the A5/4 Encryption Algorithms for

    28、GSM and ECSD, and the GEA4 Encryption Algorithm for GPRS“, version 9.0.0. Note: Reference 6 is available via http:/www.etsi.org/WebSite/OurServices/Algorithms/algorithms.aspx and is subject to licensing conditions described at this site. 3 Technical provisions The technical provisons of the current

    29、document are contained in the 3GPP Task Force Specification 6. ETSI ETSI TS 155 226 V14.0.0 (2017-04)63GPP TS 55.226 version 14.0.0 Release 14Annex F (informative): Change history Change history Date TSG # TSG Doc. CR Rev Subject/Comment Old New 02-2004 - - - - Draft presented to SA WG3 for agreemen

    30、t - 0.1.0 03-2004 SA_23 SP-040170 - - Draft provided to TSG SA for information 0.1.0 1.0.0 09-2009 SA_45 SP-090647 - - Draft provided to TSG SA for approval 1.0.0 2.0.0 09-2009 SA_45 SP-090647 - - Approval at SA#45 and placement under CR control 2.0.0 9.0.0 2011-03 - - - - Update to Rel-10 version (

    31、MCC) 9.0.0 10.0.0 2012-09 - - - - Update to Rel-11 version (MCC) 10.0.0 11.0.0 2014-09 - - - - Update to Rel-12 version (MCC) 11.0.0 12.0.0 2016-01 - - - - Update to Rel-13 version (MCC) 12.0.0 13.0.0 2017-03 SA#75 - - - Promotion to Release 14 without technical change 13.0.0 14.0.0 ETSI ETSI TS 155 226 V14.0.0 (2017-04)73GPP TS 55.226 version 14.0.0 Release 14History Document history V14.0.0 April 2017 Publication


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