1、Information technology Abstract Syntax Notation One (ASN.1): Constraint specificationCAN/CSA-ISO/IEC 8824-3:13(ISO/IEC 8824-3:2008, IDT)National Standard of CanadaNOT FOR RESALE. / PUBLICATION NON DESTINE LA REVENTE.Legal Notice for StandardsCanadian Standards Association (operating as “CSA Group”)
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20、dian Standards Association, operating as “CSA Group”National Standard of CanadaPublished in January 2013 by CSA GroupA not-for-profit private sector organization5060 Spectrum Way, Suite 100, Mississauga, Ontario, Canada L4W 5N61-800-463-6727 416-747-4044Visit our Online Store at shop.csa.caApproved
21、byStandards Council of CanadaCAN/CSA-ISO/IEC 8824-3:13Information technology Abstract Syntax Notation One (ASN.1): Constraint specificationPrepared by InternationalOrganizationforStandardization/ International Electrotechnical CommissionReviewed byCAN/CSA-ISO/IEC 8824-3:13Information technology Abst
22、ract SyntaxNotation One (ASN.1): Constraint specificationCSA/4 2013 CSA Group January 2013CAN/CSA-ISO/IEC 8824-3:13Information technology Abstract Syntax Notation One (ASN.1): Constraint specificationCSA PrefaceStandards development within the Information Technology sector is harmonized with interna
23、tional 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
24、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 8824-3-04 (adoption of
25、ISO/IEC 8824-3:2002).At the time of publication, ISO/IEC 8824-3:2008 is available from ISO and IEC in English only. CSA Group will publish the French version when it becomes available from ISO and IEC.This International Standard was reviewed by the TCIT under the jurisdiction of the Strategic Steeri
26、ng Committee on Information Technology and deemed acceptable for use in Canada. From time to time, ISO/IEC may publish addenda, corrigenda, etc. The TCIT will review these documents for approval and publication. For a listing, refer to the Current Standards Activities page at standardsactivities.csa
27、.ca. This Standard has been formally approved, without modification, by the Technical Committee and has been approved as a National Standard of Canada by the Standards Council of Canada. 2013 CSA GroupAll rights reserved. No part of this publication may be reproduced in any form whatsoever without t
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31、(c) wording of the proposed change; and(d) rationale for the change.Reference numberISO/IEC 8824-3:2008(E)ISO/IEC 2008INTERNATIONAL STANDARD ISO/IEC8824-3Fourth edition2008-12-15Information technology Abstract Syntax Notation One (ASN.1): Constraint specification Technologies de linformation Notatio
32、n de syntaxe abstraite numro un (ASN.1): Spcification des contraintes ISO/IEC 8824-3:2008(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are
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35、ting to it is found, please inform the Central Secretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT ISO/IEC 2008 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including
36、 photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org ii ISO/IEC
37、2008 All rights reservedCAN/CSA-ISO/IEC 8824-3:13ISO/IEC 8824-3:2008(E) ISO/IEC 2008 All rights reserved iiiCONTENTS Page Foreword iv Introduction. v1 Scope 1 2 Normative references . 1 2.1 Identical Recommendations | International Standards 1 3 Definitions 1 3.1 Specification of basic notation 1 3.
38、2 Information object specification . 1 3.3 Parameterization of ASN.1 specification 1 3.4 Additional definitions . 1 4 Abbreviations . 2 5 Convention . 2 6 Notation 2 6.1 Constraint 2 7 ASN.1 lexical items 2 7.1 Additional keywords. 2 8 General constraint specification . 3 9 User-defined constraints.
39、 3 10 Table constraints, including component relation constraints . 4 11 Contents constraints . 7 Annex A Constraining instance-of types 8 A.4 Example 8 Annex B Summary of the notation .9 CAN/CSA-ISO/IEC 8824-3:13ISO/IEC 8824-3:2008(E) iv ISO/IEC 2008 All rights reservedForeword ISO (the Internation
40、al Organization for Standardization) and IEC (the International Electrotechnical Commission) form the specialized system for worldwide standardization. National bodies that are members of ISO or IEC participate in the development of International Standards through technical committees established by
41、 the respective organization to deal with particular fields of technical activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other international organizations, governmental and non-governmental, in liaison with ISO and IEC, also take part in the work. In the field of
42、 information technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of the joint technical committee is to prepare International Standards. Draft Inte
43、rnational Standards adopted by the joint technical committee are circulated to national bodies for voting. Publication as an International Standard requires approval by at least 75 % of the national bodies casting a vote. Attention is drawn to the possibility that some of the elements of this docume
44、nt may be the subject of patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights. ISO/IEC 8824-3 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology, Subcommittee SC 6, Telecommunications and information exchange between syst
45、ems, in collaboration with ITU-T. The identical text is published as ITU-T Rec. X.682 (11/2008). This fourth edition cancels and replaces the third edition (ISO/IEC 8824-3:2002), which has been technically revised. ISO/IEC 8824 consists of the following parts, under the general title Information tec
46、hnology Abstract Syntax Notation One (ASN.1): Part 1: Specification of basic notation Part 2: Information object specification Part 3: Constraint specification Part 4: Parameterization of ASN.1 specifications CAN/CSA-ISO/IEC 8824-3:13ISO/IEC 8824-3:2008(E) ISO/IEC 2008 All rights reserved vIntroduct
47、ion Application designers require a notation to define a structured data type to convey their semantics. This is provided in ITU-T Rec. X.680 | ISO/IEC 8824-1 and ITU-T Rec. X.681 | ISO/IEC 8824-2. A notation is also required to further constrain the values that can appear. Examples of such constrai
48、nts are restricting the range of some component(s), or using a specified information object set to constrain an “ObjectClassFieldType“ component, or using the “AtNotation“ to specify a relation between components. This Recommendation | International Standard provides the notation for the general cas
49、e of constraint specification. NOTE 1 For historical reasons the special case of a “subtype constraint“ is specified in ITU-T Rec. X.680 | ISO/IEC 8824-1. Constraint notation can appear (in round brackets) after any use of the syntactic construct “Type“, and the purpose of this Recommendation | International Standard is to specify the general case o
