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CSA ISO/IEC 11770-2:09 (R2019)

Information technology - Security techniques - Key management - Part 2: Mechanisms using symmetric techniques (Adopted ISO/IEC 11770-2:2008, second edition, 2008-06-15)

SKU: 2419914 Published by CSA Group Publication Year 2009 Reaffirmed in 2019 48 pages Withdrawn

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Preface/Scope

CSA Preface

Standards development within the Information Technology sector is harmonized with international standards development. Through the CSA Technical Committee on Information Technology (TCIT), Canadians serve as the Canadian Advisory Committee (CAC) on ISO/IEC Joint Technical Committee 1 on Information Technology (ISO/IEC JTC1) for the Standards Council of Canada (SCC), the ISO member body for Canada and sponsor of the Canadian National Committee of the IEC. Also, as a member of the International Telecommunication Union (ITU), Canada participates in the International Telegraph and Telephone Consultative Committee (ITU-T).

This Standard supersedes CAN/CSA-ISO/IEC 11770-2-01 (adoption of ISO/IEC 11770-2:1996). At the time of publication, ISO/IEC 11770-2:2008 is available from ISO and IEC in English only. CSA will publish the French version when it becomes available from ISO and IEC.

This Standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group.

Scope

The purpose of key management is to provide procedures for handling cryptographic keying material to be used in symmetric or asymmetric cryptographic algorithms according to the security policy in force. This part of ISO/IEC 11770 defines key establishment mechanisms using symmetric cryptographic techniques.

Key establishment mechanisms using symmetric cryptographic techniques can be derived from the entity authentication mechanisms of ISO/IEC 9798-2 and ISO/IEC 9798-4 by specifying the use of text fields available in those mechanisms. Other key establishment mechanisms exist for specific environments; see, for example, ISO 8732. Besides key establishment, the goals of such a mechanism might include unilateral or mutual authentication of the communicating entities. Further goals might be the verification of the integrity of the established key, or key confirmation.

This part of ISO/IEC 11770 addresses three environments for the establishment of keys: Point-to-Point, Key Distribution Centre (KDC), and Key Translation Centre (KTC). This part of ISO/IEC 11770 describes the required content of messages which carry keying material or are necessary to set up the conditions under which the keying material can be established. It does not indicate other information which can be contained in the messages or specify other messages such as error messages. The explicit format of messages is not within the scope of this part of ISO/IEC 11770.

This part of ISO/IEC 11770 does not specify the means to be used to establish initial secret keys; that is, all the mechanisms specified in this part of ISO/IEC 11770 require an entity to share a secret key with at least one other entity (e.g. a TTP). For general guidance on the key lifecycle see ISO/IEC 11770-1. This part of ISO/IEC 11770 does not explicitly address the issue of inter domain key management. This part of ISO/IEC 11770 also does not define the implementation of key management mechanisms; products complying with this part of ISO/IEC 11770 might not be compatible.

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CSA ISO/IEC 11770-2:09 (R2019)

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