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 Algorithm for GPRS (V13.0.0; 3GPP TS 55.226 version 13.0.0 Release 13)

Standard No.

TS 155 226-2016

Release Date

2016

Published By

ETSI - European Telecommunications Standards Institute

Status

Be replaced 2018-11

Replace By

TS 155 226-2017

Latest

TS 155 226-2018

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 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. 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 GPRS. 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]."

TS 155 226-2016 history

• 2018 TS 155 226-2018 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 (V15.0.0; 3GPP TS 55.226 version 15.0.0 Release 15)
• 2017 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 Encryption Algorithm for GPRS (V14.0.0; 3GPP TS 55.226 version 14.0.0 Release 14)
• 2016 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 Algorithm for GPRS (V13.0.0; 3GPP TS 55.226 version 13.0.0 Release 13)
• 2014 TS 155 226-2014 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 (V12.0.0; 3GPP TS 55.226 version 12.0.0 Release 12)
• 2012 TS 155 226-2012 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 (V11.0.0; 3GPP TS 55.226 version 11.0.0 Release 11)
• 2011 TS 155 226-2011 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 (V9.0.0; 3GPP TS 55.226 version 9.0.0 Release 9)