ISO/IEC 9594-1:2020/Amd 1:2025
(Amendment)Information technology — Open systems interconnection — Part 1: The Directory: Overview of concepts, models and services — Amendment 1: Miscellaneous enhancements
Information technology — Open systems interconnection — Part 1: The Directory: Overview of concepts, models and services — Amendment 1: Miscellaneous enhancements
Technologies de l'information — Interconnexion de systèmes ouverts (OSI) — Partie 1: Titre manque — Amendement 1: Titre manque
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ISO/IEC 9594-1
Ninth edition
Information technology — Open
2020-11
systems interconnection —
AMENDMENT 1
Part 1:
2025-05
The Directory: Overview of
concepts, models and services
AMENDMENT 1: Miscellaneous
enhancements
Reference number
ISO/IEC 9594-1:2020/Amd. 1:2025(en) © ISO/IEC 2025
ISO/IEC 9594-1:2020/Amd. 1:2025(en)
© ISO/IEC 2025
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ISO/IEC 9594-1:2020/Amd. 1:2025(en)
Foreword
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Commission) form the specialized system for worldwide standardization. National bodies that are
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see www.iso.org/iso/foreword.html. In the IEC, see www.iec.ch/understanding-standards.
This document was prepared by ITU-T as ITU-T X.500 (2019) Amd. 1 (10/2024) and drafted in
accordance with its editorial rules, in collaboration with Joint Technical Committee ISO/IEC JTC 1,
Information technology, Subcommittee SC 6, Telecommunications and information exchange between
systems.
A list of all parts in the ISO/IEC 9594 series can be found on the ISO and IEC websites.
Any feedback or questions on this document should be directed to the user’s national standards body.
A complete listing of these bodies can be found at www.iso.org/members.html and
www.iec.ch/national-committees.
Rec. ITU-T X.500 (2019) Amd. 1 (10/2024)
© ISO/IEC 2025 – All rights reserved
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ISO/IEC 9594-1:2020/Amd. 1:2025(en)
INTERNATIONAL STANDARD ISO/IEC 9594-1
RECOMMENDATION ITU-T X.500
Information technology – Open Systems Interconnection – The Directory: Overview of
concepts, models and services
Amendment 1
Miscellaneous enhancements
Summary
Amendment 1 to Recommendation ITU-T X.500 (2019) | International Standard ISO/IEC 9594-1:2020 amends the
summary and the scope of the Specification.
History
Edition Recommendation Approval Study Group Unique ID
1.0 ITU-T X.500 1988-11-25 11.1002/1000/2995
2.0 ITU-T X.500 1993-11-16 7 11.1002/1000/2996
3.0 ITU-T X.500 1997-08-09 7 11.1002/1000/4121
3.1 ITU-T X.500 (1997) Amd. 1 2000-03-31 7 11.1002/1000/5029
4.0 ITU-T X.500 2001-02-02 7 11.1002/1000/5307
5.0 ITU-T X.500 2005-08-29 17 11.1002/1000/8488
6.0 ITU-T X.500 2008-11-13 17 11.1002/1000/9587
7.0 ITU-T X.500 2012-10-14 17 11.1002/1000/11732
8.0 ITU-T X.500 2016-10-14 17 11.1002/1000/13029
9.0 ITU-T X.500 2019-10-14 17 11.1002/1000/14031
9.1 ITU-T X.500 (2019) Amd. 1 2024-10-29 17 11.1002/1000/16170
Keywords
Attribute, attribute certificates, cryptographic algorithm, digital signature, directory, directory information tree, directory
system agent, directory user agent, distinguished name, encry
...
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