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TR 55.919
Specification of the
A5/3 Encryption Algorithms for GSM and ECSD,
and the GEA3 Encryption Algorithm for GPRS
Document 4:  Design and Evaluation Report

3GPP‑Page   ETSI‑search   CONTENT↓
V17.0.0 (PDF)  2022/03  9 p.
V16.0.0  2020/06  9 p.
V15.0.0  2018/06  9 p.
V14.0.0  2017/03  9 p.
V13.0.0  2016/01  9 p.
V12.0.0  2014/10  9 p.
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Rapporteur:
Mr. Sahlin, Bengt
Ericsson LM

Content for  TR 55.919  Word version:  17.0.0

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0  Introduction  Word‑p. 4

This Report has been produced by ETSI SAGE Task Force for the design of the GSM A5/3 and GEA3 encryption algorithms.
The work described in this report was undertaken in response to a request made by Security Group GSM Association. The work was done under supervision of the ETSI Mobile Competence Centre (MCC) and the GSM Association.

1  Scope  Word‑p. 5

This Technical Report has been prepared by the ETSI SAGE GSM A5/3 Task Force, and gives a detailed report on the design and evaluation of the A5/3 encryption algorithms for GSM and ECSD, and of the GEA3 encryption algorithm for GPRS (including EGPRS).

2  References  Word‑p. 5

The following documents contain provisions which, through reference in this text, constitute 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 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.
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[11]
TR 21.905: "Vocabulary for 3GPP Specifications".
[12]
3GPP Task Force Report: "Specification of the A5/3 encryption algorithms for GSM and ECSD, and the GEA3 encryption algorithm for GPRS; Document 4: Design and evaluation report".
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3  Definitions, symbols and abbreviations  Word‑p. 5

3.1  Definitions  Word‑p. 5

For the purposes of the present document, the terms and definitions given in TR 21.905 and in the 3GPP Task Force Report [12] apply. A term defined in the latter document takes precedence over the definition of the same term, if any, in TR 21.905.

3.2  Symbols  Word‑p. 6

For the purposes of the present document, the symbols defined in the 3GPP Task Force Report [12] apply.

3.3  Abbreviations  Word‑p. 6

For the purposes of the present document, the abbreviations given in TR 21.905 and in the 3GPP Task Force Report [12] apply. An abbreviation defined in the latter document takes precedence over the definition of the same abbreviation, if any, in TR 21.905.

4  Technical provisions  Word‑p. 6

The technical provision of the current document are contained in the 3GPP Task Force Report [12].

$  Change History  Word‑p. 7

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