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1、 Reference number ISO/IEC 8824-1:2002/Amd.2:2005(E) ISO/IEC 2005 INTERNATIONAL STANDARD ISO/IEC 8824-1 Third edition 2002-12-15 AMENDMENT 2 2005-07-15 Information technology Abstract Syntax Notation One (ASN.1): Specification of basic notation AMENDMENT 2: Alignment with changes made to ITU-T Rec. X
2、.660|ISO/IEC 9834-1 for identifiers in object identifier value notation Technologies de linformation Notation de syntaxe abstraite numro un (ASN.1): Spcification de la notation de base AMENDEMENT 2: Alignement sur les changements faits la Rec. UIT-T X.660|ISO/CEI 9834-1 pour les identificateurs dans
3、 la notation de valeur didentificateur dobjet Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 05/08/2007 08:34:15 MDTNo reproduction or networking permitted without license from IHS -
4、,-,- ISO/IEC 8824-1:2002/Amd.2:2005(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 licensed to and installed on the computer performing
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7、riat at the address given below. ISO/IEC 2005 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 photocopying and microfilm, without permission in writing from either ISO at the a
8、ddress 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 Published in Switzerland ii ISO/IEC 2005 All rights reserved Copyright International Organizat
9、ion for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 05/08/2007 08:34:15 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO/IEC 8824-1:2002/Amd.2:2005(E) ISO/IEC 2005 All rights reserved iii For
10、eword 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 technical
11、 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 in
12、 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 Internati
13、onal 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 of t
14、he 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. Amendment 2 to ISO/IEC 8824-1:2002 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology, Subcommittee SC 6, Telecommun
15、ications and information exchange between systems in collaboration with ITU-T. The identical text is published as Amendment 2 to ITU-T Rec. X.680. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not
16、for Resale, 05/08/2007 08:34:15 MDTNo reproduction or networking permitted without license from IHS -,-,- Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 05/08/2007 08:34:15 MDTNo rep
17、roduction or networking permitted without license from IHS -,-,- ISO/IEC 8824-1:2002/Amd.2:2005 (E) ITU-T Rec. X.680 (2002)/Amd.2 (08/2004) 1 INTERNATIONAL STANDARD ITU-T RECOMMENDATION Information technology Abstract Syntax Notation One (ASN.1) Specification of basic notation Amendment 2 Alignment
18、with changes made to ITU-T Rec. X.660 | ISO/IEC 9834-1 for identifiers in object identifier value notation Conventions used in this amendment: Original, unchanged, text is in normal font. Deleted text is struck-through, thus: deleted text. Inserted text is underlined, thus: inserted text. 1 Subclaus
19、es 31.7 and 31.9 In ITU-T Rec. X.680 | ISO/IEC 8824-1, replace 31.7 and 31.9 (Object Identifier) with: 31.7 The “NameForm“ shall be used only for those object identifier components whose numeric value and identifier are specified in ITU-T Rec. X.660 | ISO/IEC 9834-1, Annexes A to C (see also Annex D
20、 of this Recommendation | International Standard), and shall be one of the identifiers specified in ITU-T Rec. X.660 | ISO/IEC 9834-1, Annexes A to C. NOTE Where the “NameForm“ is allowed, the use of the “NameAndNumberForm“ instead has been recommended in some circumstances by ITU-T Rec. X.660 | ISO
21、/IEC 9834-1, A.1.2. 31.7 bis Where ITU-T Rec. X.660 | ISO/IEC 9834-1 specifies synonymous identifiers, any synonyms may be used under conditions established when the synonym was registered in accordance with ITU-T Rec. X.660 | ISO/IEC 9834-1with the same semantics. Where the same name is both an ide
22、ntifier specified in ITU-T Rec. X.660 | ISO/IEC 9834-1 and an ASN.1 value reference within the module containing the “NameForm“, the name within the object identifier value shall be treated as an ITU-T Rec. X.660 | ISO/IEC 9834-1 identifier. 31.9 The “identifier“ in the “NameAndNumberForm“ and “XMLN
23、ameAndNumberForm“ shall be specified when a numeric value is assigned to the object identifier component. There is flexibility in the “identifier“s that can be used in the “NameAndNumberForm“ and “XMLNameAndNumberForm“ beneath the three top-level arcs. These identifiers are not included in encodings
24、, and may change over time. This is in recognition that the names of organizations can change. Identifiers for arcs should normally be agreed between the Registration Authority responsible for the node above an arc, and the Registration Authority to which responsibility for subsequent arcs has been
25、assigned. NOTE The Registration Aauthorities allocating numeric values to object identifier componentsresponsible for arcs beneath the three top-level arcs are identified in ITU-T Rec. X.660 | ISO/IEC 9834-1. 2 Subclauses D.1 to D.4 In ITU-T Rec. X.680 | ISO/IEC 8824-1, replace D.1 to D.4 with: D.1
26、RootTop-level assignment of object identifier component values D.1.1 There are three top-level arcsThree arcs are specified from the root node. The assignment of values and identifiers, and the authority for assignment of subsequent component values, are as follows: Value Identifier Authority for su
27、bsequent assignments 0 itu-t Administered by ITU-T (See D.2) 1 iso Administered by ISO (See D.3) 2 joint-iso-itu-t Jointly-administered by ISO and ITU-T (See D.4) D.1.2 The identifiers itu-t, iso and joint-iso-itu-t, assigned above, may each be used as a “NameForm“ (see 31.3). NOTE An additional ide
28、ntifier itu-r has been allocated to this arc, for use (only) when the subordinate arc r-recommendation(5) is used, but it cannot be used as a “NameForm“. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bern
29、ie Not for Resale, 05/08/2007 08:34:15 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO/IEC 8824-1:2002/Amd.2:2005 (E) 2 ITU-T Rec. X.680 (2002)/Amd.2 (08/2004) D.1.3 The identifiers ccitt and joint-iso-ccitt are synonyms for itu-t and joint-iso-itu-t, respectively, and
30、thus may appear in object identifier values. D.2 ITU-T-administered assignment of object identifier component values D.2.1 Six arcs are specified from the node identified by itu-t. The assignment of values and identifiers is: Value Identifier Authority for subsequent assignments 0 recommendation See
31、 D.2.2 1 question See D.2.3 2 administration See D.2.4 3 network-operator See D.2.5 4 identified-organization See D.2.6 5 r-recommendation See D.2.7 TheseThe first five identifiers may be used as a “NameForm“ (see 31.3), but not r-recommendation. NOTE This is because only identifiers that were prese
32、nt in the initial version of this Recommendation | International Standard can be used as a “NameForm“, in order to avoid backwards compatibility problems for related software. D.2.2 The arcs below recommendation have the value 1 to 26 with assigned identifiers of a to z. Arcs below these have the nu
33、mbers of ITU-T (and CCITT) Recommendations in the series identified by the letter. Arcs below this are determined as necessary by the ITU-T (and CCITT) Recommendations. The identifiers a to z may be used as a “NameForm“. D.2.3 The arcs below question have values corresponding to ITU-T Study Groups,
34、qualified by the study period. The value is computed by the formula: study group number + (period * 32) where “period“ has the value 0 for 1984-1988, 1 for 1988-1992, etc., and the multiplier is 32 decimal. The arcs below each study group have the values corresponding to the questions assigned to th
35、at study group. Arcs below this are determined as necessary by the group (e.g., working party or special rapporteur group) assigned to study the question. D.2.4 The arcs below administration have the values of ITU-T Rec. X.121 DCCs. Arcs below this are determined as necessary by the Administration o
36、f the country identified by the ITU-T Rec. X.121 DCC. D.2.5 The arcs below network-operator have the value of ITU-T Rec. X.121 DNICs. Arcs below this are determined as necessary by the Administration or ROA identified by the DNIC. D.2.6 The arcs below identified-organization are assigned values by t
37、he ITU Telecommunication Standardization Bureau (TSB). Arcs below this are determined as necessary by the identified organizations. NOTE Organizations which may find this arc useful include: recognized operating agencies not operating a public data network; scientific and industrial organizations; r
38、egional standards organizations; and multi-national organizations. D.2.7 The arcs below r-recommendation are determined by the ITU Radiocommunication Bureau (BR). D.3 ISO-administered assignment of object identifier component values D.3.1 ThreeFour arcs are specified from the node identified iso(1).
39、 The assignment of values and identifiers is: Value Identifier Authority for subsequent assignments 0 standard See D.3.2 1 registration-authority See D.3.3 2 member-body See D.3.3D.3.4 3 identified-organization See D.3.4D.3.5 These identifiers may be used as a “NameForm“. NOTE The use of arc registr
40、ation-authority(1) has been withdrawn. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 05/08/2007 08:34:15 MDTNo reproduction or networking permitted without license from IHS -,-,- IS
41、O/IEC 8824-1:2002/Amd.2:2005 (E) ITU-T Rec. X.680 (2002)/Amd.2 (08/2004) 3 D.3.2 The arcs below standard shall each have the value of the number of an International Standard published by ISO or IEC. Where the International Standard is multi-part, there shall be an additional arc for the part number,
42、 unless this is specifically excluded in the text of the International Standard. Further arcs shall have values as defined in that International Standard. D.3.3 The arcs below registration-authority are assigned to those International Standards that, in one or more of their parts, specify the proced
43、ures for the operation of a registration authority. Arc numbers from 1 to 10 are reserved to identify a part of the ISO/IEC 9834 multi-part Standard, and the primary integer value of the arc is the number of that part. For other International Standards, the arc number is the number of the Internatio
44、nal Standard. In all cases, the identified International Standard or part of the ISO/IEC 9834 multi-part Standard allocates subsequent arcs. D.3.34 The arcs immediately below member-body shall have values of a three digit numeric country code (without the leading zeros), as specified in ISO 3166, th
45、at identifies the ISO National Body in that country. The “NameForm“ of object identifier component is not permitted for these arcs with these identifiers. Arcs below the “country code“ are allocated by the identified ISO National Body. D.3.45 The arcs immediately below identified-organization shall
46、have values of an International Code Designator (ICD) allocated by the Registration Authority for ISO/IEC 6523 that identify an issuing organization specifically registered by that authority as allocating object identifier components. The arcs immediately below the ICD shall have values of an “organ
47、ization code“ allocated by the issuing organization in accordance with ISO/IEC 6523. D.4 Joint aAssignment of object identifier component values jointly administered by ISO and ITU-T D.4.1 The arcs below joint-iso-itu-t have values which are assigned and agreed from time to time by a Registration Au
48、thority established by ISO/IEC and ITU-T to identify either areas of joint ISO/IEC | ITU-T standardization activity, or to provide allocations to other international organizations requiring object identifier namespace, in accordance with ITU-T Rec. X.662 | ISO/IEC 9834-3. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 05/08/2007 08:34:15 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO/IEC 8824-1:200