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  • BSI
    20/30388515 DC BS ISO/IEC 11770-5. Information technology. Security techniques. Key management - Part 5. Group key management
    Edition: 2020
    $44.66
    / user per year

Description of 20/30388515 DC 2020

This document specifies mechanisms to establish shared symmetric keys between groups of entities. It defines symmetric key-based key establishment mechanisms for multiple entities with a key distribution centre (KDC), and defines symmetric key establishment mechanisms based on a general tree-based logical key structure with both individual rekeying and batched rekeying. It also defines key establishment mechanisms based on a key chain with group forward secrecy, group backward secrecy, or both group forward and backward secrecy.

This document also 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. However, this document does not specify information that has no relation with key establishment mechanisms, nor does it specify other messages such as error messages. The explicit format of messages is not within the scope of this document.

This document does not specify the means to be used to establish the initial secret keys required to be shared between each entity and the KDC, nor key lifecycle management. This document also does not explicitly address the issue of interdomain key management.

Annex A lists the object identifiers assigned to the mechanisms specified in this document. For information purposes, a load balancing mechanism for a general tree structure is described in Annex B.



Standard Number20/30388515 DC
TitleBS ISO/IEC 11770-5. Information technology. Security techniques. Key management - Part 5. Group key management
StatusDefinitive
Publication Date2020-02-17
Identical National Standard OfISO/IEC DIS 11770-5
DescriptorsData storage protection, Symmetrical, Cryptography, Keys (cryptographic), Data processing, Information exchange, Data transmission, Coding (programming), Data security, Data management, Algorithms
ICS35.030 IT Security
CommitteeIST/33/2
PublisherBSI
Pages24

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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