ETSI TS 155 226-2016 Digital cellular telecommunications system (Phase 2+) 3G Security Specification of the A5 4 Encryption Algorithms for GSM and ECSD and the GEA4 Encryption Algo.pdf

1、 ETSI TS 1Digital cellular telecoSpecification of the A5/ECSD, and the GEA(3GPP TS 55.2TECHNICAL SPECIFICATION155 226 V13.0.0 (2016communications system (Pha3G Security; 5/4 Encryption Algorithms forEA4 Encryption Algorithm for .226 version 13.0.0 Release 13GLOBAL SYSTEMOBILE COMMUN16-01) hase 2+);

2、for GSM and or GPRS 13) TEM FOR ICATIONSRETSI ETSI TS 155 226 V13.0.0 (2016-01)13GPP TS 55.226 version 13.0.0 Release 13Reference RTS/TSGS-0355226vd00 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

3、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 from: http:/www.etsi.org/standards-search The present document may be made available in electronic versions and/or in print. The conten

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9、 Marks registered and owned by the GSM Association. ETSI ETSI TS 155 226 V13.0.0 (2016-01)23GPP TS 55.226 version 13.0.0 Release 13Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essentia

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

11、e 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. 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) wh

12、ich are, 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

13、GSM identities. 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“, “s

14、hould“, “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.

15、 ETSI ETSI TS 155 226 V13.0.0 (2016-01)33GPP TS 55.226 version 13.0.0 Release 13Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 4g3Introduction 4g31 Scope 5g32 References 5g33 Technical provisions. 5g3Annex F (informative): Change history . 6g3History 7g3

16、ETSI ETSI TS 155 226 V13.0.0 (2016-01)43GPP TS 55.226 version 13.0.0 Release 13Foreword 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 T

17、SG approval. 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 appro

18、val; 3 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. Introdu

19、ction 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 algorit

20、hm that 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 algorithm

21、s as GSM 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 V13.0.0 (2016-01)53GPP TS 55.226 version

22、13.0.0 Release 131 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 esse

23、ntial 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.

24、 Document 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 GP

25、RS. Document 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, c

26、onstitute 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 o

27、f 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 V13.0.0 (2016-01)63GPP TS 55.226 version 13.0.0 Release 13Annex F (informative): Change history Change history Date TSG # TSG Doc. CR Rev Subject/Comment Old New 02-2004 - - - - Draft presented to SA WG3 for agreeme

30、nt - 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 ETSI ETSI TS 155 226 V13.0.0 (2016-01)73GPP TS 55.226 version 13.0.0 Release 13History Document history V13.0.0 January 2016 Publication