IEC IECTR62351-90-2 Edition 1.02018-09 TECHNICAL REPORT colour inside Powersystemsmanagementand associatedinformationexchange-Dataand communicationssecurity- Part90-2:Deeppacketinspectionofencryptedcommunications IEC TR 62351-90-2:2018-09(en) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright @ 2018 IEC, Geneva, Switzerland 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 IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC your local IEC member National Committee for further information. IEC Central Office Tel.: +41 22 919 02 11 3,ruede Varembé [email protected] CH-1211 Geneva 20 www.iec.ch Switzerland AbouttheIEC The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes International Standards for all electrical, electronic and related technologies. About IEC publications The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the latest edition,acorrigenda oran amendment might have beenpublished. IECCatalogue-webstore.iec.ch/catalogue Electropedia-www.electropedia.org The stand-alone application for consulting The world's leading online dictionary of electronic and theentire bibliographical information on IEc International Standards, electrical terms containing 21 000 terms and definitions in Technical Specifications, Technical Reports and other English and French, with equivalent terms in 16 additional documents.Available forPC,Mac OS,AndroidTablets and languages. Also known as the International Electrotechnical iPad. Vocabulary (IEV) online. IEC publications search-webstore.iec.ch/advsearchform IEC Glossary-std.iec.ch/glossary The advanced search enables to find IEC publications by a 67 000 electrotechnical terminology entries in English and varietyofcriteria(referencenumber, text,technical French extracted from the Terms and Definitions clause of iEC publications issued since 2002. Some entries have been committee,...).It also gives information on projects, replaced and withdrawn publications. collected from earlier publications of IEC TC 37,77, 86 and CISPR. IECJustPublished-webstore.iec.ch/justpublished IEc Customer Service Centre - webstore.iec.ch/csc Stay up to date on all new IEC publications. Just Published details all new publications released. Available online and If you wish to give us your feedback on this publication or also once a month by email. need further assistance, please contact the Customer Service Centre: [email protected]. IEC IECTR 62351-90-2 Edition 1.02018-09 TECHNICAL REPORT colour inside Power systems management and associated information exchange - Data and communications security- Part 90-2: Deep packet inspection of encrypted communications INTERNATIONAL ELECTROTECHNICAL COMMISSION ICS 33.200 ISBN 978-2-8322-6038-8 Warning! Make sure that you obtained this publication from an authorized distributor. ?Registered trademark of the Intermational Electrotechnical Commission IECTR62351-90-2:2018@IEC2018 - 2 - CONTENTS FOREWORD. 4 INTRODUCTION. Scope.. 1 2 Normative references . 3 Terms, definitions and abbreviated terms 3.1 Terms and definitions.. 3.2 Abbreviated terms... 4 Overview ... Monitoring and auditing requirements 5 .9 9 5.1 Use cases from utilities. 5.2 Use cases from vendors. 5.3 A similar use case: Encrypted SiP Calls Recording ... 10 6 Overview of encrypted channels in IEC 62351 6.1 General... 10 6.2 IEC62351-3 10 6.3 IEC TS 62351-4 10 IEC TS 62351-6.... 6.4 DPI for encrypted communication techniques evaluation framework 7 8 State of the art of ready techniques . 12 8.1 General.. 8.2 Unencrypted TLS, 12 8.3 Private key sharing . 13 9 State of the art of techniques that need adaptation. 14 9.1 General. 14 Proxy... 9.2 14 9.3 Advanced Middl