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20、ionen franais ds quelle sera produite par lorganisme rdacteur.TMA trade-mark of the Canadian 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,
21、 Canada L4W 5N61-800-463-6727 416-747-4044Visit our Online Store at shop.csa.caApproved byStandards Council of CanadaCAN/CSA-ISO/IEC 8824-2:13Information technology Abstract Syntax Notation One (ASN.1): Information object specificationPrepared by InternationalOrganizationforStandardization/ Internat
22、ional Electrotechnical CommissionReviewed byCAN/CSA-ISO/IEC 8824-2:13Information technology Abstract Syntax NotationOne (ASN.1): Information object specificationCSA/4 2013 CSA Group January 2013CAN/CSA-ISO/IEC 8824-2:13Information technology Abstract Syntax Notation One (ASN.1): Information object s
23、pecificationCSA PrefaceStandards 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 Comm
24、ittee 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 Telegra
25、ph and Telephone Consultative Committee (ITU-T).This Standard supersedes CAN/CSA-ISO/IEC 8824-2-04 (adoption of ISO/IEC 8824-2:2002).At the time of publication, ISO/IEC 8824-2:2008 is available from ISO and IEC in English only. CSA Group will publish the French version when it becomes available from
26、 ISO and IEC.This International Standard was reviewed by the TCIT under the jurisdiction of the Strategic Steering 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 ap
27、proval and publication. For a listing, refer to the Current Standards Activities page at standardsactivities.csa.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. 2
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31、 change” in the subject line:(a) Standard designation (number);(b) relevant clause, table, and/or figure number;(c) wording of the proposed change; and(d) rationale for the change.Reference numberISO/IEC 8824-2:2008(E)ISO/IEC 2008INTERNATIONAL STANDARD ISO/IEC8824-2Fourth edition2008-12-15Informatio
32、n technology Abstract Syntax Notation One (ASN.1): Information object specification Technologies de linformation Notation de syntaxe abstraite numro un (ASN.1): Spcification des objets informationnels ISO/IEC 8824-2:2008(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance w
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37、 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 2008 All rights reservedCAN/CSA-ISO/IEC 8824-2:13ISO/IEC 8824-2:2008(E) ISO/IEC 2008 All rights reserved iiiCONTENTS Page Introduction . v 1 Scope 1 2 Normative referenc
38、es . 1 2.1 Identical Recommendations | International Standards 1 3 Definitions 1 3.1 Specification of basic notation 1 3.2 Constraint specification. 1 3.3 Parameterization of ASN.1 specification 1 3.4 Additional definitions . 2 4 Abbreviations . 3 5 Convention . 3 6 Notation 3 6.1 Assignments 3 6.2
39、Types. 3 6.3 Values . 4 6.4 Elements 4 7 ASN.1 lexical items 4 7.1 Information object class references. 4 7.2 Information object references . 4 7.3 Information object set references 4 7.4 Type field references. 4 7.5 Value field references . 5 7.6 Value set field references 5 7.7 Object field refere
40、nces 5 7.8 Object set field references. 5 7.9 Word . 5 7.10 Additional keywords. 5 8 Referencing definitions 5 9 Information object class definition and assignment . 6 10 Syntax List 10 11 Information object definition and assignment 12 12 Information object set definition and assignment. 14 13 Asso
41、ciated tables 15 14 Notation for the object class field type. 16 15 Information from objects 18 Annex A The TYPE-IDENTIFIER information object class. 21 Annex B Abstract syntax definitions 22 Annex C The instance-of type 23 Annex D Examples. 25 D.1 Example usage of simplified OPERATION class. 25 D.2
42、 Example usage of “ObjectClassFieldType“ 26 D.3 Illustrate usage of objects and object sets . 26 Annex E Tutorial annex on the ASN.1 model of object set extension . 28 Annex F Summary of the notation 29 Foreword . iv CAN/CSA-ISO/IEC 8824-2:13ISO/IEC 8824-2:2008(E) iv ISO/IEC 2008 All rights reserved
43、Foreword ISO (the International 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 techni
44、cal committees established by 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
45、 in the work. In the field of 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 Intern
46、ational Standards. Draft International 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 o
47、f the elements of this document 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 8824-2 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology, Subcommittee SC 6, Telecommunications and info
48、rmation exchange between systems, in collaboration with ITU-T. The identical text is published as ITU-T Rec. X.681 (11/2008). This fourth edition cancels and replaces the third edition (ISO/IEC 8824-2:2002), which has been technically revised. It also incorporates the Amendment ISO/IEC 8824-2:2002/A
49、md.1:2004, and the Technical Corrigenda ISO/IEC 8824-2:2002/Cor.1:2006 and ISO/IEC 8824-2:2002/Cor.2:2007. ISO/IEC 8824 consists of the following parts, under the general title Information technology Abstract Syntax Notation One (ASN.1): Part 1: Specification of basic notation Part 2: Information object specification Part 3: Constrain
