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ETSI TS 155 226 PDF

ETSI TS 155 226 PDF

Name:
ETSI TS 155 226 PDF

Published Date:
04/01/2017

Status:
Active

Description:

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 14.0.0 Release 14)

Publisher:
European Telecommunications Standards Institute

Document status:
Active
Format:
Electronic (PDF)
Delivery time:
10 minutes
Delivery time (for Russian version):
200 business days
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$9.81
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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 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 algorithms 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.

Edition : 14.0.0
File Size : 1 file , 58 KB
Note : This product is unavailable in Russia, Ukraine, Belarus
Number of Pages : 8
Published : 04/01/2017

History

ETSI TS 155 226
ETSI TS 155 226
Published Date: 08/01/2020
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)
$9.81
ETSI TS 155 226
ETSI TS 155 226
Published Date: 11/01/2018
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 (3GPP TS 55.226 version 15.0.0 Release 15)
$9.81
ETSI TS 155 226
ETSI TS 155 226
Published Date: 04/01/2017
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 14.0.0 Release 14)
$9.81
ETSI TS 155 226
ETSI TS 155 226
Published Date: 10/01/2014
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 (3GPP TS 55.226 version 12.0.0 Release 12)
$9.81
ETSI TS 155 226
ETSI TS 155 226
Published Date: 11/01/2012
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 (3GPP TS 55.226 version 11.0.0 Release 11)
$9.81
ETSI TS 155 226
ETSI TS 155 226
Published Date: 05/01/2011
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 (3GPP TS 55.226 version 10.0.0 Release 10)
$9.81
ETSI TS 155 226
ETSI TS 155 226
Published Date: 02/01/2011
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 (3GPP TS 55.226 version 9.0.0 Release 9)
$9.81

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