ISO/IEC 9594-3:2020

INTERNATIONAL ISO/IEC
STANDARD 9594-3
Ninth edition
2020-11
Information technology — Open
systems interconnection —
Part 3:
The Directory: Abstract service
definition
Reference number
©
ISO/IEC 2020
© ISO/IEC 2020
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ii © ISO/IEC 2020 – All rights reserved

Foreword
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This document was prepared by ITU-T as ITU-T X.511 (10/2019) 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.
This ninth edition cancels and replaces the eighth edition (ISO/IEC 9594-3:2017), which has been
technically revised.
A list of all parts in the ISO/IEC 9594 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body.
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© ISO/IEC 2020 – All rights reserved iii

CONTENTS
Page
1 Scope . 1
2 Normative references. 1
2.1 Identical Recommendations | International Standards . 1
2.2 Paired Recommendations | International Standards equivalent in technical content . 1
2.3 Additional references . 2
3 Definitions . 2
3.1 OSI Reference Model security architecture definitions. 2
3.2 Basic Directory definitions . 2
3.3 Directory model definitions . 2
3.4 Directory information base definitions . 2
3.5 Directory entry definitions . 2
3.6 Name definitions . 3
3.7 Distributed operations definitions . 3
3.8 Abstract service definitions . 3
4 Abbreviations . 4
5 Conventions . 4
6 Overview of the Directory service . 5
7 Information types and common procedures . 5
7.1 Introduction . 5
7.2 Information types defined elsewhere . 5
7.3 Common arguments . 6
7.4 Common results . 9
7.5 Service controls . 10
7.6 Entry information selection . 12
7.7 Entry information . 15
7.8 Filter . 17
7.9 Paged results. 20
7.10 Security parameters . 22
7.11 Common elements of procedure for access control . 23
7.12 Managing the DSA Information Tree . 25
7.13 Procedures for families of entries . 25
8 Directory authentication . 26
8.1 Simple authentication procedure . 26
8.2 Password policy . 28
9 Bind, Unbind operations, Change Password and Administer Password operations . 31
9.1 Directory Bind . 31
9.2 Directory Unbind . 34
10 Directory Read operations . 34
10.1 Read . 34
10.2 Compare . 37
10.3 Abandon . 40
11 Directory Search operations . 40
11.1 List . 40
11.2 Search . 44
12 Directory Modify operations . 55
12.1 Add Entry . 55
12.2 Remove Entry. 57
12.3 Modify Entry . 59
12.4 Modify DN . 63
12.5 Change Password . 65
12.6 Administer Password. 66
© ISO/IEC 2020 – All rights reserved
Rec. ITU-T X.511 (10/2019) v
Page
13 Operations for LDAP messages . 66
13.1 LDAP Transport operation . 67
13.2 Linked LDAP operation . 69
14 Errors . 69
14.1 Error precedence . 69
14.2 Abandoned . 70
14.3 Abandon Failed . 70
14.4 Attribute Error . 71
14.5 Name Error . 72
14.6 Referral . 73
14.7 Security Error . 73
14.8 Service Error . 74
14.9 Update Error . 76
15 Analysis of search arguments . 77
15.1 General check of search filter . 78
15.2 Check of request-attribute-profiles . 79
15.3 Check of controls and hierarchy selections . 80
15.4 Check of matching use . 81
Annex A – Abstract Service in ASN.1 . 82
Annex B – Operational semantics for Basic Access Control . 98
Annex C – Examples of searching families of entries . 111
C.
...