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Digital cellular telecommunications system (Phase 2+); Specification of the A5/3 encryption algorithms for GSM and ECSD, and the GEA3 encryption algorithm for GPRS; Document 3: Design and conformance test data (3GPP TS 55.218 version 7.1.0 Release 7)
Standard published on 23.1.2008
Selected format:Digital cellular telecommunications system (Phase 2+); Specification of the A5/3 encryption algorithms for GSM and ECSD, and the GEA3 encryption algorithm for GPRS; Document 3: Design and conformance test data (3GPP TS 55.218 version 8.0.0 Release 8)
Standard published on 17.2.2009
Selected format:Digital cellular telecommunications system (Phase 2+); Specification of the A5/3 encryption algorithms for GSM and ECSD, and the GEA3 encryption algorithm for GPRS; Document 3: Design and conformance test data (3GPP TS 55.218 version 9.0.0 Release 9)
Standard published on 9.2.2010
Selected format:Digital cellular telecommunications system (Phase 2+); 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 10.0.0 Release 10)
Standard published on 16.5.2011
Selected format:Digital cellular telecommunications system (Phase 2+); 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 11.0.0 Release 11)
Standard published on 13.11.2012
Selected format:Digital cellular telecommunications system (Phase 2+); 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 12.0.0 Release 12)
Standard published on 13.10.2014
Selected format:Digital cellular telecommunications system (Phase 2+); 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 13.0.0 Release 13)
Standard published on 29.1.2016
Selected format: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)
Standard published on 6.4.2017
Selected format: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 15.0.0 Release 15)
Standard published on 12.11.2018
Selected format: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 16.0.0 Release 16)
Standard published on 17.8.2020
Selected format:Latest update: 2026-05-14 (Number of items: 2 277 490)
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