IEC 62351-6:2020

Power systems management and associated information exchange - Data and communications security - Part 6: Security for IEC 61850

IEC 62351-6:2020 specifies messages, procedures, and algorithms for securing the operation of all protocols based on or derived from the IEC 61850 series. This document applies to at least those protocols listed below:
IEC 61850-8-1 Communication networks and systems for power utility automation – Part 8-1: Specific communication service mapping (SCSM) – Mappings to MMS (ISO/IEC 9506-1 and ISO/IEC 9506-2) and to ISO/IEC 8802-3
IEC 61850-8-2 Communication networks and systems for power utility automation – Part 8-2: Specific communication service mapping (SCSM) – Mapping to Extensible Messaging Presence Protocol (XMPP)
IEC 61850-9-2 Communication networks and systems for power utility automation – Part 9-2: Specific communication service mapping (SCSM) – Sampled values over ISO/IEC 8802-3
IEC 61850-6 Communication networks and systems for power utility automation – Part 6: Configuration description language for communication in power utility automation systems related to IEDs
The initial audience for this document is intended to be the members of the working groups developing or making use of the protocols listed in Table 1. For the measures described in this specification to take effect, they must be accepted and referenced by the specifications for the protocols themselves. This document is written to enable that process.
The subsequent audience for this document is intended to be the developers of products that implement these protocols.
Portions of this document may also be of use to managers and executives in order to understand the purpose and requirements of the work.

Gestion des systèmes de puissance et échanges d'informations associés - Sécurité des communications et des données - Partie 6: Sécurité pour l’IEC 61850

IEC 62351-6:2020 spécifie les messages, procédures et algorithmes qui permettent de sécuriser le fonctionnement de tous les protocoles fondés sur ou dérivés de la série IEC 61850.
Les premiers utilisateurs auxquels s’adresse le présent document sont les membres des groupes de travail qui développent ou utilisent les protocoles répertoriés dans le Tableau 1. Pour que les mesures décrites dans la présente spécification soient mises en œuvre, elles doivent être acceptées et référencées dans les spécifications des protocoles elles-mêmes. Le présent document est rédigé afin de permettre ce traitement. Les premiers utilisateurs auxquels s’adresse le présent document sont présumés être les concepteurs de produits qui mettent en œuvre ces protocoles.
Des parties du présent document peuvent aussi être utiles aux gestionnaires et aux dirigeants pour comprendre l'objectif d’une activité et les exigences correspondantes.

General Information

• Status: Published
• Publication Date: 19-Oct-2020
• ICS: 33.200 - Telecontrol. Telemetering
• Technical Committee: TC 57 - Power systems management and associated information exchange
• Drafting Committee: WG 15 - TC 57/WG 15
• Current Stage: PPUB - Publication issued
• Start Date: 18-Sep-2020
• Completion Date: 20-Oct-2020

Relations

• Revises: IEC TS 62351-6:2007 - Power systems management and associated information exchange - Data and communications security - Part 6: Security for IEC 61850
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 62351-6 ®
Edition 1.0 2020-10
INTERNATIONAL
STANDARD
colour
inside
Power systems management and associated information exchange –
Data and communication security –
Part 6: Security for IEC 61850
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
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copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
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About the IEC
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International Standards for all electrical, electronic and related technologies.

About IEC publications
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IEC 62351-6 ®
Edition 1.0 2020-10
INTERNATIONAL
STANDARD
colour
inside
Power systems management and associated information exchange –

Data and communication security –

Part 6: Security for IEC 61850

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.200 ISBN 978-2-8322-8766-8

– 2 – IEC 62351-6:2020 © IEC 2020
CONTENTS
FOREWORD . 4
1 Scope and object . 6
1.1 Scope . 6
1.2 Namespace name and version . 6
1.3 Code Component distribution . 7
2 Normative references . 7
3 Terms, definitions and abbreviated terms . 8
3.1 Terms and definitions . 8
3.2 Abbreviated terms . 8
4 Security issues addressed by this document . 9
4.1 Operational issues affecting choice of security options . 9
4.2 Security threats countered . 9
4.3 Attack methods countered . 9
5 Correlation of IEC 61850 parts and IEC 62351 parts . 9
5.1 General . 9
5.2 IEC 61850-8-1 Profile for Client/Server communications . 10
5.2.1 General . 10
5.2.2 Control centre to substation . 11
5.2.3 Substation communications . 11
5.3 IEC 61850 security for profiles using VLAN IDs . 11
5.4 IEC 61850-8-2 for Client/Server communications . 11
5.5 Using OriginatorID for Client/Server Services. 11
6 Multicast Association Protocols . 12
6.1 General . 12
6.2 Replay Protection . 12
6.2.1 GOOSE replay protection . 12
6.2.2 Sampled Value replay protection . 16
7 Security for SNTP . 19
8 Layer 2 security for profiles for IEC 61850-8-1 GOOSE and IEC 61850-9-2
Sampled Value . 20
8.1 Overview of Ethertype (informative) . 20
8.2 Extended PDU . 20
8.2.1 General format of extended PDU . 20
8.2.2 Format of extension octets . 21
9 Substation configuration language extensions . 25
9.1 Service capability . 25
9.1.1 Access Point support security for GOOSE Publisher . 25
9.1.2 Access Point support security for SV Publisher . 25
9.1.3 Acces Point support security for GOOSE and SMV subscriber . 25
9.1.4 Server Access Point support security for TPAA . 26
9.1.5 Client Access Point support security for TPAA . 26
9.2 Publish with security enabled . 26
9.2.1 GOOSE . 26
9.2.2 SMV . 26
9.2.3 Key Policy and Management . 27
9.3 Use of Simulation . 27

10 Extension of LGOS and LSVS . 27
11 Conformance . 27
11.1 General conformance . 27
11.2 Conformance for implementations claiming IEC 61850-8-1 ISO 9506 profile
security . 28
11.2.1 General . 28
11.2.2 IEC 62351-4 TLS Conformity for ISO-9506 Client/Server Profile using

ACSE Authentication . 29
11.3 Conformance for implementations claiming VLAN profile security . 29
11.4 Conformance for implementations claiming SNTP profile security . 32
Bibliography . 33

Figure 1 – MMS Security Profiles . 10
Figure 2 – Replay Protection State Machine for GOOSE . 13
Figure 3 – Replay Protection State Machine for SV . 17
Figure 4 – General format of extended PDU . 20
Figure 5 – Definition of Reserved 1 . 20
Figure 6 – Calculated MAC Domain . 22
Figure 7 – AES-GCM application on the example of a L2 GOOSE/SV packet. . 23

Table 1 – Scope of application to standards . 6
Table 2 – Extract from IEC 61850-9-2 (Informative) . 16
Table 3 – Extension of the LGOS class . 27
Table 4 – Extension of the LSVS class . 27
Table 5 – Conformance table . 28
Table 6 – PICS for IEC 61850-8-1 ISO 9506 profile . 28
Table 7 – PICS for TLS IEC 61850-8-1 Client/Server using ACSE Authentication . 29
Table 8 – PICS for VLAN profiles . 30
Table 9 – IEC 61850-8-1 L2 GOOSE Security . 30
Table 10 – IEC 61850-9-2 L2 SMV Security . 31
Table 11 – IEC 61850-8-1 Routable GOOSE . 31
Table 12 – IEC 61850-9-2 Routable SMV . 32
Table 13 – PICS for SNTP profiles . 32

– 4 – IEC 62351-6:2020 © IEC 2020
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
POWER SYSTEMS MANAGEMENT AND ASSOCIATED INFORMATION
EXCHANGE – DATA AND COMMUNICATION SECURITY –

Part 6: Security for IEC 61850

FOREWORD
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IEC 62351-6 ®
Edition 1.0 2020-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Power systems management and associated information exchange –
Data and communication security –
Part 6: Security for IEC 61850

Gestion des systèmes de puissance et échanges d'informations associés –
Sécurité des communications et des données –
Partie 6: Sécurité pour l’IEC 61850

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About the IEC
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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, a corrigendum or an amendment might have been published.

IEC publications search - webstore.iec.ch/advsearchform Electropedia - www.electropedia.org
The advanced search enables to find IEC publications by a The world's leading online dictionary on electrotechnology,
variety of criteria (reference number, text, technical containing more than 22 000 terminological entries in English
committee,…). It also gives information on projects, replaced and French, with equivalent terms in 16 additional languages.
and withdrawn publications. Also known as the International Electrotechnical Vocabulary

(IEV) online.
IEC Just Published - webstore.iec.ch/justpublished
Stay up to date on all new IEC publications. Just Published IEC Glossary - std.iec.ch/glossary
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once a month by email. French extracted from the Terms and Definitions clause of
IEC publications issued since 2002. Some entries have been
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If you wish to give us your feedback on this publication or CISPR.

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IEC 62351-6 ®
Edition 1.0 2020-10
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Power systems management and associated information exchange –

Data and communication security –

Part 6: Security for IEC 61850

Gestion des systèmes de puissance et échanges d'informations associés –

Sécurité des communications et des données –

Partie 6: Sécurité pour l’IEC 61850

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.200 ISBN 978-2-8322-9166-5

– 2 – IEC 62351-6:2020 © IEC 2020
CONTENTS
FOREWORD . 4
1 Scope and object . 6
1.1 Scope . 6
1.2 Namespace name and version . 6
1.3 Code Component distribution . 7
2 Normative references . 7
3 Terms, definitions and abbreviated terms . 8
3.1 Terms and definitions . 8
3.2 Abbreviated terms . 8
4 Security issues addressed by this document . 9
4.1 Operational issues affecting choice of security options . 9
4.2 Security threats countered . 9
4.3 Attack methods countered . 9
5 Correlation of IEC 61850 parts and IEC 62351 parts . 10
5.1 General . 10
5.2 IEC 61850-8-1 Profile for Client/Server communications . 10
5.2.1 General . 10
5.2.2 Control centre to substation . 11
5.2.3 Substation communications . 11
5.3 IEC 61850 security for profiles using VLAN IDs . 11
5.4 IEC 61850-8-2 for Client/Server communications . 11
5.5 Using OriginatorID for Client/Server Services. 11
6 Multicast Association Protocols . 12
6.1 General . 12
6.2 Replay Protection . 12
6.2.1 GOOSE replay protection . 12
6.2.2 Sampled Value replay protection . 16
7 Security for SNTP . 19
8 Layer 2 security for profiles for IEC 61850-8-1 GOOSE and IEC 61850-9-2
Sampled Value . 20
8.1 Overview of Ethertype (informative) . 20
8.2 Extended PDU . 20
8.2.1 General format of extended PDU . 20
8.2.2 Format of extension octets . 21
9 Substation configuration language extensions . 25
9.1 Service capability . 25
9.1.1 Access Point support security for GOOSE Publisher . 25
9.1.2 Access Point support security for SV Publisher . 25
9.1.3 Acces Point support security for GOOSE and SMV subscriber . 25
9.1.4 Server Access Point support security for TPAA . 26
9.1.5 Client Access Point support security for TPAA . 26
9.2 Publish with security enabled . 26
9.2.1 GOOSE . 26
9.2.2 SMV . 26
9.2.3 Key Policy and Management . 27
9.3 Use of Simulation . 27

10 Extension of LGOS and LSVS . 27
11 Conformance . 27
11.1 General conformance . 27
11.2 Conformance for implementations claiming IEC 61850-8-1 ISO 9506 profile
security . 28
11.2.1 General . 28
11.2.2 IEC 62351-4 TLS Conformity for ISO-9506 Client/Server Profile using

ACSE Authentication . 29
11.3 Conformance for implementations claiming VLAN profile security . 29
11.4 Conformance for implementations claiming SNTP profile security . 32
Bibliography . 33

Figure 1 – MMS Security Profiles . 10
Figure 2 – Replay Protection State Machine for GOOSE . 13
Figure 3 – Replay Protection State Machine for SV . 17
Figure 4 – General format of extended PDU . 20
Figure 5 – Definition of Reserved 1 . 20
Figure 6 – Calculated MAC Domain . 22
Figure 7 – AES-GCM application on the example of a L2 GOOSE/SV packet. . 23

Table 1 – Scope of application to standards . 6
Table 2 – Extract from IEC 61850-9-2 (Informative) . 16
Table 3 – Extension of the LGOS class . 27
Table 4 – Extension of the LSVS class . 27
Table 5 – Conformance table . 28
Table 6 – PICS for IEC 61850-8-1 ISO 9506 profile . 28
Table 7 – PICS for TLS IEC 61850-8-1 Client/Server using ACSE Authentication . 29
Table 8 – PICS for VLAN profiles . 30
Table 9 – IEC 61850-8-1 L2 GOOSE Security .
...