IEC TS 62351-100-1:2018

Power systems management and associated information exchange - Data and communications security - Part 100-1: Conformance test cases for IEC TS 62351-5 and IEC TS 60870-5-7

IEC TS 62351-100-1:2018(E), which is a technical specification, describes test cases of data and communication security for telecontrol equipment, substation automation systems (SAS) and telecontrol systems, including front-end functions of SCADA.
The goal of this document is to enable interoperability by providing a standard method of testing protocol implementations to verify that a device fulfils the requirement of the standard. Note that conformity to the standard does not guarantee interoperability between devices using different implementations. It is expected that using this specification during testing will minimize the risk of non-interoperability. A basic condition for this interoperability is a passed conformance test of both devices.
The scope of this document is to specify commonly available procedures and definitions for conformance and/or interoperability testing of IEC TS 62351-5 and IEC TS 60870-5-7. The conformance test cases defined herein are focused to verify the conformant integration of the underlying authentication, as specified in IEC TS 62351-5 and IEC TS 60870-5-7, to protect IEC 60870-5-101 and IEC 6870-5-104-based communications.
This document deals with data and communication security conformance testing; therefore, other requirements, such as safety or EMC, are not covered. These requirements are covered by other standards (if applicable) and the proof of compliance for these topics is done according to these standards.

Standards Content (sample)

IEC TS 62351-100-1
Edition 1.0 2018-11
TECHNICAL
SPECIFICATION
colour
inside
Power systems management and associated information exchange – Data and
communications security –
Part 100-1: Conformance test cases for IEC TS 62351-5 and IEC TS 60870-5-7
IEC TS 62351-100-1:2018-11(en)
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IEC TS 62351-100-1
Edition 1.0 2018-11
TECHNICAL
SPECIFICATION
colour
inside
Power systems management and associated information exchange – Data and
communications security –
Part 100-1: Conformance test cases for IEC TS 62351-5 and IEC TS 60870-5-7
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33.200 ISBN 978-2-8322-6182-8

Warning! Make sure that you obtained this publication from an authorized distributor.

® Registered trademark of the International Electrotechnical Commission
---------------------- Page: 3 ----------------------
– 2 – IEC TS 62351-100-1:2018 © IEC 2018
CONTENTS

FOREWORD ........................................................................................................................... 6

INTRODUCTION ..................................................................................................................... 8

1 Scope .............................................................................................................................. 9

2 Normative references ...................................................................................................... 9

3 Terms, definitions and abbreviated terms ...................................................................... 10

3.1 Terms and definitions............................................................................................ 10

3.2 Abbreviated terms ................................................................................................. 12

4 General ......................................................................................................................... 12

4.1 Normatives covered by this technical specification ................................................ 12

4.2 Conformance testing structure .............................................................................. 12

4.2.1 General ......................................................................................................... 12

4.2.2 Conformance testing of security extension procedures .................................. 13

4.2.3 Conformance testing addressed per station type ........................................... 14

4.2.4 Normal procedure tests and resiliency tests ................................................... 14

4.3 Conformance testing requirements ........................................................................ 14

4.3.1 Testing base protocols with security extension. ............................................. 14

4.3.2 Testing of profiles including TCP/IP ............................................................... 14

4.3.3 Requirements for the device under test ......................................................... 14

4.3.4 Requirements for the test facility ................................................................... 15

4.3.5 Test logging ................................................................................................... 15

5 Verification of configuration parameters ......................................................................... 16

5.1 General ................................................................................................................. 16

5.2 System definition .................................................................................................. 16

5.3 Application security extension ............................................................................... 18

6 Verification of Communication ....................................................................................... 21

6.1 General ................................................................................................................. 21

6.2 ASDU segmentation control .................................................................................. 21

6.3 Verification of ASDUs ........................................................................................... 23

6.3.1 User management ASDUs ............................................................................. 23

6.3.2 Update key maintenance ASDUs ................................................................... 26

6.3.3 Session key maintenance ASDUs .................................................................. 32

6.3.4 Challenge/reply and aggressive mode authentication ASDUs ........................ 35

6.3.5 Security statistics ASDU ................................................................................ 39

7 Verification of procedures .............................................................................................. 39

7.1 General ................................................................................................................. 39

7.2 User management ................................................................................................. 40

7.2.1 General ......................................................................................................... 40

7.2.2 Controlling station.......................................................................................... 41

7.2.3 Controlled station .......................................................................................... 43

7.3 Update key maintenance - Symmetric ................................................................... 48

7.3.1 General ......................................................................................................... 48

7.3.2 Controlling station.......................................................................................... 48

7.3.3 Controlled station .......................................................................................... 52

7.4 Update key maintenance - Asymmetric ................................................................. 54

7.4.1 General ......................................................................................................... 54

7.4.2 Controlling station.......................................................................................... 55

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IEC TS 62351-100-1:2018 © IEC 2018 – 3 –

7.4.3 Controlled station .......................................................................................... 59

7.5 Session key maintenance ..................................................................................... 61

7.5.1 General ......................................................................................................... 61

7.5.2 Controlling station.......................................................................................... 62

7.5.3 Controlled station .......................................................................................... 67

7.6 Challenge/reply authentication .............................................................................. 69

7.6.1 General ......................................................................................................... 69

7.6.2 Controlling station.......................................................................................... 70

7.6.3 Controlled station .......................................................................................... 76

7.7 Aggressive mode authentication ........................................................................... 80

7.7.1 General ......................................................................................................... 80

7.7.2 Controlling station.......................................................................................... 81

7.7.3 Controlled station .......................................................................................... 84

8 Tests results chart ......................................................................................................... 87

8.1 Verification of configuration parameters ................................................................ 87

8.2 Verification of communication ............................................................................... 88

8.2.1 ASDUs segmentation control ......................................................................... 88

8.2.2 User management ASDUs ............................................................................. 89

8.2.3 Update key maintenance ASDUs ................................................................... 90

8.2.4 Session key maintenance ASDUs .................................................................. 92

8.2.5 Challenge/reply and aggressive mode authentication ASDUs ........................ 93

8.2.6 Security statistics ASDU ................................................................................ 94

8.3 Verification of procedures ..................................................................................... 95

8.3.1 User management ......................................................................................... 95

8.3.2 Update key maintenance - Symmetric ............................................................ 98

8.3.3 Update key maintenance - Asymmetric ........................................................ 100

8.3.4 Session key maintenance ............................................................................ 102

8.3.5 Challenge/reply authentication ..................................................................... 105

8.3.6 Aggressive mode authentication .................................................................. 109

Figure 1 – IEC TS 62351-5 Security extension procedures ................................................... 13

Table 1 – Configuration parameters: System definition ......................................................... 17

Table 2 – Configuration parameters: Application security extension ...................................... 19

Table 3 – ASDU segmentation control................................................................................... 22

Table 4 – User management ASDUs ..................................................................................... 23

Table 5 – Update key maintenance ASDUs ........................................................................... 26

Table 6 – Session key maintenance ASDUs .......................................................................... 32

Table 7 – Challenge/reply and aggressive mode authentication ASDUs ................................ 35

Table 8 – Security statistics ASDU ........................................................................................ 39

Table 9 – User management: Controlling station normal procedure tests .............................. 41

Table 10 – User management: Controlling station resiliency tests ......................................... 42

Table 11 – User management: Controlled station normal procedure tests ............................. 43

Table 12 – User management: Controlled station resiliency tests .......................................... 44

Table 13 – Update key maintenance - Symmetric: Controlling station triggering

conditions ............................................................................................................................. 48

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– 4 – IEC TS 62351-100-1:2018 © IEC 2018

Table 14 – Update key maintenance - Symmetric: Controlling station normal procedure

tests ..................................................................................................................................... 49

Table 15 – Update key maintenance - Symmetric: Controlling station resiliency tests ........... 50

Table 16 – Update key maintenance - Symmetric: Controlled station normal procedure

tests ..................................................................................................................................... 52

Table 17 – Update key maintenance - Symmetric: Controlled station resiliency tests ............ 53

Table 18 – Update key maintenance - Asymmetric: Controlling station triggering

conditions ............................................................................................................................. 55

Table 19 – Update key maintenance - Asymmetric: Controlling station normal

procedure tests ..................................................................................................................... 56

Table 20 – Update key maintenance - Asymmetric: Controlling station resiliency tests .......... 57

Table 21 – Update key maintenance - Asymmetric: Controlled station normal procedure

tests ..................................................................................................................................... 59

Table 22 – Update key maintenance - Asymmetric: Controlled station resiliency tests .......... 60

Table 23 – Session key maintenance: Controlling station triggering conditions ..................... 62

Table 24 – Session key maintenance: Controlling station normal procedure tests ................. 63

Table 25 – Session key maintenance: Controlling station resiliency tests .............................. 64

Table 26 – Session key maintenance: Controlled station invalidating session key ................. 67

Table 27 – Session key maintenance: Controlled station normal procedure tests .................. 68

Table 28 – Session key maintenance: Controlled station resiliency tests .............................. 69

Table 29 – Challenge/reply authentication: Controlling station triggering conditions .............. 70

Table 30 – Challenge/reply authentication: Controlling station normal procedure tests .......... 71

Table 31 – Challenge/reply authentication: Controlling station resiliency tests ...................... 72

Table 32 – Challenge/reply authentication: Controlled station normal procedure tests .......... 76

Table 33 – Challenge/reply authentication: Controlled station resiliency tests ....................... 77

Table 34 – Aggressive mode authentication: Controlling station normal procedure tests ....... 81

Table 35 – Aggressive mode authentication: Controlling station resiliency tests .................... 82

Table 36 – Aggressive mode authentication: Controlled station normal procedure tests ........ 84

Table 37 – Aggressive Mode Authentication: Controlled station resiliency tests .................... 85

Table 38 – Test results chart: Configuration parameters ....................................................... 87

Table 39 – Test results chart: ASDU segmentation control .................................................... 88

Table 40 – Test results chart: User managements ASDUs .................................................... 89

Table 41 – Test results chart: Update key maintenance ASDUs ............................................ 90

Table 42 – Test results chart: Session key maintenance ASDUs ........................................... 92

Table 43 – Test results chart: Challenge/reply and aggressive mode authentication

ASDUs .................................................................................................................................. 93

Table 44 – Test results chart: Security statistics ASDU ......................................................... 94

Table 45 – Test results chart: User management procedure – Controlling station ................. 95

Table 46 – Test results chart: User management procedure – Controlled Station .................. 96

Table 47 – Test results chart: Update key maintenance – Symmetric – Controlling

station .................................................................................................................................. 98

Table 48 – Test results chart: Update key maintenance – Symmetric – Controlled

station .................................................................................................................................. 99

Table 49 – Test results chart: Update key maintenance – Asymmetric – Controlling

station ................................................................................................................................ 100

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IEC TS 62351-100-1:2018 © IEC 2018 – 5 –
Table 50 – Test results chart: Update key maintenance – Asymmetric – Controlled

station ................................................................................................................................ 101

Table 51 – Test results chart: Session key maintenance – Controlling station ..................... 102

Table 52 – Test results chart: Session key maintenance – Controlled station ...................... 104

Table 53 – Test results chart: Challenge/reply authentication – Controlling station ............. 105

Table 54 – Test results chart: Challenge/reply authentication – Controlled station .............. 107

Table 55 – Test results chart: Aggressive mode authentication – Controlling station ........... 109

Table 56 – Test results chart: Aggressive mode authentication – Controlled station ............ 110

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– 6 – IEC TS 62351-100-1:2018 © IEC 2018
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
POWER SYSTEMS MANAGEMENT AND ASSOCIATED INFORMATION
EXCHANGE – DATA AND COMMUNICATIONS SECURITY –
Part 100-1: Conformance test cases for IEC TS 62351-5
and IEC TS 60870-5-7
FOREWORD

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IEC TS 62351-100-1, which is a technical specification, has been prepared by IEC technical

committee 57: Power systems management and associated information exchange.
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IEC TS 62351-100-1:2018 © IEC 2018 – 7 –
The text of this technical specification is based on the following documents:
Enquiry draft Report on voting
57/1980/DTS 57/2016/RVDTS

Full information on the voting for the approval of this technical specification can be found in

the report on voting indicated in the above table.

This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

A list of all parts in the IEC 62351 series, published under the general title Power systems

management and associated information exchange – Data and communications security, can

be found on the IEC website.

The committee has decided that the contents of this document will remain unchanged until the

stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to

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• reconfirmed,
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– 8 – IEC TS 62351-100-1:2018 © IEC 2018
INTRODUCTION

This technical specification describes test cases for conformance testing of telecontrol

equipment or systems using the IEC TS 62351-5 security extension and its application in

IEC TS 60870-5-7 for IEC 60870-5-101 and IEC 60870-5-104 communication protocols.

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IEC TS 62351-100-1:2018 © IEC 2018 – 9 –
POWER SYSTEMS MANAGEMENT AND ASSOCIATED INFORMATION
EXCHANGE – DATA AND COMMUNICATIONS SECURITY –
Part 100-1: Conformance test cases for IEC TS 62351-5
and IEC TS 60870-5-7
1 Scope

This part of IEC 62351, which is a technical specification, describes test cases of data and

communication security for telecontrol equipment, substation automation systems (SAS) and

telecontrol systems, including front-end functions of SCADA.

The goal of this document is to enable interoperability by providing a standard method of

testing protocol implementations to verify that a device fulfils the requirement of the standard.

Note that conformity to the standard does not guarantee interoperability between devices

using different implementations. It is expected that using this specification during testing will

minimize the risk of non-interoperability. A basic condition for this interoperability is a passed

conformance test of both devices.

The scope of this document is to specify commonly available procedures and definitions for

conformance and/or interoperability testing of IEC TS 62351-5 and IEC TS 60870-5-7. The

conformance test cases defined herein are focused to verify the conformant integration of the

underlying authentication, as specified in IEC TS 62351-5 and IEC TS 60870-5-7, to protect

IEC 60870-5-101 and IEC 6870-5-104-based communications.

This document deals with data and communication security conformance testing; therefore,

other requirements, such as safety or EMC, are not covered. These requirements are covered

by other standards (if applicable) and the proof of compliance for these topics is done

according to these standards.
2 Normative references

The following documents are referred to in the text in such a way that some or all of their

content constitutes requirements of this document. For dated references, only the edition

cited applies. For undated references, the latest edition of the referenced document (including

any amendments) applies.
IEC 60870-5-6:2006, Telecontrol equipment and systems – Part 5-6: Guidelines for
conformance testing for the IEC 60870-5 companion standardsI

IEC TS 60870-5-7:2013, Telecontrol equipment and systems – Part 5-7: Transmission

protocols – Security extensions to IEC 60870-5-101 and IEC 60870-5-104 protocols (applying

IEC 62351)

IEC 60870-5-101:2003, Telecontrol equipment and systems – Part 5-101: Transmission

protocols – Companion standard for basic telecontrol tasks
—————————

1 The base standard always takes precedence. In case of ambiguity between this document and the base

standards (IEC TS 62351-5 and IEC TS 60870-5-7), this part of IEC 62351 needs to be clarified or amended.

When testing, negative behaviour is not described in the base standard. The behaviour described in this

document prevails and should be observed. The conformance statement produced after testing indicates any

lack of conformance to either the test plan or the base standard.
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– 10 – IEC TS 62351-100-1:2018 © IEC 2018

IEC 60870-5-104:2006, Telecontrol equipment and systems – Part 5-104: Transmission

protocols – Network access for IEC 60870-5-101 using standard transport profiles

IEC TS 60870-5-601:2015, Telecontrol equipment and systems – Part 5-601: Transmission

protocols – Conformance test cases for the IEC 60870-5-101 companion sta
...