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INTERNATIONAL STANDARD ISO/IEC 8825-7 Second edition 2015-11-15 Information technology — ASN.1 encoding rules: Specification of Octet Encoding Rules (OER) Technologies de l'information -- Règles de codage ASN.1: Spécification des règles de codage des octets (OER) Reference number ISO/IEC 8825-7:2015(E) © ISO/IEC 2015
ISO/IEC 8825-7:2015(E) COPYRIGHT PROTECTED DOCUMENT © ISO/IEC 2015 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISO’s 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 copyright@iso.org Web www.iso.org Published in Switzerland ii © ISO/IEC 2015 – All rights reserved
ISO/IEC 8825-7:2015(E) 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 technical 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 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 International 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 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. This second edition cancels and replaces the first edition of ISO/IEC 8825-7:2014 which has been technically revised. ISO/IEC 8825-7 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology, Subcommittee SC 6, Telecommunications and information exchange between systems, in collaboration with ITU-T. The identical text is published as ITU-T X.696 (08/2015). © ISO/IEC 2015 – All rights reserved iii
I n t e r n a t i o n a l T e l e c o m m u n i c a t i o n U n i o n ITU-T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU X.696 (08/2015) SERIES X: DATA NETWORKS, OPEN SYSTEM COMMUNICATIONS AND SECURITY OSI networking and system aspects – Abstract Syntax Notation One (ASN.1) Information technology – ASN.1 encoding rules: Specification of Octet Encoding Rules (OER) Recommendation ITU-T X.696
ITU-T X-SERIES RECOMMENDATIONS DATA NETWORKS, OPEN SYSTEM COMMUNICATIONS AND SECURITY PUBLIC DATA NETWORKS Services and facilities Interfaces Transmission, signalling and switching Network aspects Maintenance Administrative arrangements OPEN SYSTEMS INTERCONNECTION Model and notation Service definitions Connection-mode protocol specifications Connectionless-mode protocol specifications PICS proformas Protocol Identification Security Protocols Layer Managed Objects Conformance testing INTERWORKING BETWEEN NETWORKS General Satellite data transmission systems IP-based networks MESSAGE HANDLING SYSTEMS DIRECTORY OSI NETWORKING AND SYSTEM ASPECTS Networking Efficiency Quality of service Naming, Addressing and Registration Abstract Syntax Notation One (ASN.1) OSI MANAGEMENT Systems management framework and architecture Management communication service and protocol Structure of management information Management functions and ODMA functions SECURITY OSI APPLICATIONS Commitment, concurrency and recovery Transaction processing Remote operations Generic applications of ASN.1 OPEN DISTRIBUTED PROCESSING INFORMATION AND NETWORK SECURITY SECURE APPLICATIONS AND SERVICES CYBERSPACE SECURITY SECURE APPLICATIONS AND SERVICES CYBERSECURITY INFORMATION EXCHANGE CLOUD COMPUTING SECURITY For further details, please refer to the list of ITU-T Recommendations. X.1–X.19 X.20–X.49 X.50–X.89 X.90–X.149 X.150–X.179 X.180–X.199 X.200–X.209 X.210–X.219 X.220–X.229 X.230–X.239 X.240–X.259 X.260–X.269 X.270–X.279 X.280–X.289 X.290–X.299 X.300–X.349 X.350–X.369 X.370–X.379 X.400–X.499 X.500–X.599 X.600–X.629 X.630–X.639 X.640–X.649 X.650–X.679 X.680–X.699 X.700–X.709 X.710–X.719 X.720–X.729 X.730–X.799 X.800–X.849 X.850–X.859 X.860–X.879 X.880–X.889 X.890–X.899 X.900–X.999 X.1000–X.1099 X.1100–X.1199 X.1200–X.1299 X.1300–X.1399 X.1500–X.1599 X.1600–X.1699
INTERNATIONAL STANDARD ISO/IEC 8825-7 RECOMMENDATION ITU-T X.696 Information technology – ASN.1 encoding rules: Specification of Octet Encoding Rules (OER) Summary Recommendation ITU-T X.696 | ISO/IEC 8825-7 specifies two sets of binary encoding rules that can be applied to values of all ASN.1 types using less processing resources than the Basic Encoding Rules and its derivatives (described in Rec. ITU-T X.690 | ISO/IEC 8825-1) and the Packed Encoding Rules (described in Rec. ITU-T X.691 | ISO/IEC 8825-2). History Edition Recommendation Approval 2014-08-29 2015-08-13 ITU-T X.696 ITU-T X.696 1.0 2.0 Study Group Unique ID* 17 17 11.1002/1000/12151 11.1002/1000/12487 ____________________ * To access the Recommendation, type the URL http://handle.itu.int/ in the address field of your web browser, followed by the Recommendation's unique ID. For example, http://handle.itu.int/11.1002/1000/11830-en. Rec. ITU-T X.696 (08/2015) i
FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, information and communication technologies (ICTs). The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Assembly (WTSA), which meets every four years, establishes the topics for study by the ITU-T study groups which, in turn, produce Recommendations on these topics. The approval of ITU-T Recommendations is covered by the procedure laid down in WTSA Resolution 1. In some areas of information technology which fall within ITU-T's purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. NOTE In this Recommendation, the expression "Administration" is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. Compliance with this Recommendation is voluntary. However, the Recommendation may contain certain mandatory provisions (to ensure, e.g., interoperability or applicability) and compliance with the Recommendation is achieved when all of these mandatory provisions are met. The words "shall" or some other obligatory language such as "must" and the negative equivalents are used to express requirements. The use of such words does not suggest that compliance with the Recommendation is required of any party. INTELLECTUAL PROPERTY RIGHTS ITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. ITU takes no position concerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others outside of the Recommendation development process. As of the date of approval of this Recommendation, ITU had not received notice of intellectual property, protected by patents, which may be required to implement this Recommendation. However, implementers are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database at http://www.itu.int/ITU-T/ipr/.  ITU 2015 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. ii Rec. ITU-T X.696 (08/2015)
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