ETSI EN 300 392-7 V3.5.1 (2019-07)

Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 7: Security

REN/TCCE-06196

Prizemni snopovni radio (TETRA) - Govor in podatki (V+D) - 7. del: Varnost

Ta dokument opredeljuje prizemni snopovni radijski sistem (TETRA), ki podpira govor in podatke (V+D). Določa radijski vmesnik, medsebojno delovanje med prizemnimi snopovnimi radijskimi sistemi in drugimi sistemi prek prehodov, vmesnik terminalske opreme na mobilni postaji, povezavo linijskih postaj z infrastrukturo, varnostne vidike prizemnih snopovnih radijskih omrežij, storitve upravljanja, ki so razpoložljive operaterju, cilje učinkovitosti ter dopolnilne storitve, ki so na voljo poleg osnovnih in telekomunikacijskih storitev.
Ta del opisuje varnostne mehanizme govora in podatkov v okviru prizemnega snopovnega radia. Zagotavlja mehanizme za zaupnost krmilne signalizacije ter govora in podatkov uporabnika prek radijskega vmesnika, mehanizme za preverjanje pristnosti ter ključne mehanizme za upravljanje radijskega vmesnika in medsistemskega vmesnika (ISI).
Točka 4 opisuje mehanizme za preverjanje pristnosti in ključne mehanizme za upravljanje za radijski vmesnik prizemnega snopovnega radia. Naslednji storitvi preverjanja pristnosti za radijski vmesnik sta na podlagi analize groženj določeni v standardu ETSI ETR 086-3 [i.3]:
• preverjanje pristnosti mobilne postaje (MS) z infrastrukturo prizemnega snopovnega radia;
• preverjanje pristnosti infrastrukture prizemnega snopovnega radia z mobilno postajo.
Točka 5 opisuje mehanizme in protokole za omogočanje in onemogočanje opreme mobilnih postaj ter naročnine uporabnika.
Prizemni snopovni radio lahko omogoča možnost šifriranja radijskega vmesnika. Točka 6, kadar se uporablja,
opisuje mehanizme zaupnosti s šifriranjem radijskega vmesnika, govor v vodovnem načinu, podatke v vodovnem načinu, paketne podatke in informacije o nadzoru. Točka 6 opisuje mehanizme šifriranja in postopke mobilnosti. Vključuje tudi podroben opis protokola za nadzor šifriranja prek radijskega vmesnika.
Ta dokument ne obravnava podrobne obravnave napak protokola ali mehanizmov protokola, kadar prizemni snopovni radio deluje v degradiranem načinu. Ta vprašanja so specifična za posamezno izvedbo in zato ne spadajo na področje prizadevanj za standardizacijo prizemnega snopovnega radia.
Podroben opis centra za preverjanje pristnosti ne spada na področje uporabe tega dokumenta.

General Information

• Status: Published
• Publication Date: 15-Jul-2019
• Technical Committee: TCCE 6 - TCCE Security
• Current Stage: 12 - Completion
• Due Date: 01-Jul-2019
• Completion Date: 16-Jul-2019
• Ref Project: SIST EN 300 392-7 V3.5.1:2019 - Terrestrial Trunked Radio (TETRA) - Voice plus Data (V+D) - Part 7: Security

Standards Content (Sample)

ETSI EN 300 392-7 V3.5.1 (2019-07)






EUROPEAN STANDARD
Terrestrial Trunked Radio (TETRA);
Voice plus Data (V+D);
Part 7: Security

---------------------- Page: 1 ----------------------
2 ETSI EN 300 392-7 V3.5.1 (2019-07)



Reference
REN/TCCE-06196
Keywords
security, TETRA, V+D
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: [phone]  Fax: [phone]

Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88

Important notice
The present document can be downloaded from:
http://www.etsi.org/standards-search
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI
deliverable is the one made publicly available in PDF format at www.etsi.org/deliver.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
https://portal.etsi.org/TB/ETSIDeliverableStatus.aspx
If you find errors in the present document, please send your comment to one of the following services:
https://portal.etsi.org/People/CommiteeSupportStaff.aspx
Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying
and microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.

© ETSI 2019.
All rights reserved.

DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its Members.

3GPP™ and LTE™ are trademarks of ETSI registered for the benefit of its Members and
of the 3GPP Organizational Partners.
oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and
of the oneM2M Partners.
®
GSM and the GSM logo are trademarks registered and owned by the GSM Association.
ETSI

---------------------- Page: 2 ----------------------
3 ETSI EN 300 392-7 V3.5.1 (2019-07)
Contents
Intellectual Property Rights . 11
Foreword . 11
Modal verbs terminology . 12
1 Scope . 13
2 References . 13
2.1 Normative references . 13
2.2 Informative references . 14
3 Definition of terms, symbols and abbreviations . 15
3.1 Terms . 15
3.2 Symbols . 18
3.3 Abbreviations . 18
4 Air Interface authentication and key management mechanisms . 20
4.a General . 20
4.0 Security classes . 20
4.1 Air interface authentication mechanisms . 21
4.1.1 Overview . 21
4.1.1a Authentication and key management algorithms . 21
4.1.2 Authentication of an MS . 21
4.1.3 Authentication of the infrastructure . 22
4.1.4 Mutual authentication of MS and infrastructure . 23
4.1.5 The authentication key . 25
4.1.6 Equipment authentication . 25
4.1.6a Request for information related to an MS . 26
4.1.7 Authentication of an MS when migrated . 26
4.1.8 Authentication of the home SwMI when migrated . 27
4.1.9 Mutual Authentication of MS and infrastructure when migrated . 28
4.2 Air Interface key management mechanisms . 29
4.2.0 General . 29
4.2.1 The DCK . 29
4.2.2 The GCK . 30
4.2.2.0 General . 30
4.2.2.1 Session key modifier GCK0 . 31
4.2.3 The CCK . 32
4.2.4 The SCK . 33
4.2.4.0 General . 33
4.2.4.1 SCK association for DMO use . 35
4.2.4.1.0 General . 35
4.2.4.1.1 DMO SCK subset grouping . 35
4.2.5 The GSKO . 37
4.2.5.0 General . 37
4.2.5.1 SCK distribution to groups with OTAR . 38
4.2.5.2 GCK distribution to groups with OTAR . 38
4.2.5.3 Rules for MS response to group key distribution . 39
4.2.6 Encrypted Short Identity (ESI) mechanism . 39
4.2.7 Encryption Cipher Key . 40
4.2.8 Summary of AI key management mechanisms . 40
4.3 Service description and primitives . 42
4.3.1 Authentication primitives . 42
4.3.2 SCK transfer primitives . 42
4.3.3 GCK transfer primitives . 43
4.3.4 GSKO transfer primitives . 44
4.4 Authentication protocol . 45
4.4.1 Authentication state transitions . 45
4.4.2 Authentication protocol sequences and operations . 48
4.4.2.0 General . 48
ETSI

---------------------- Page: 3 ----------------------
4 ETSI EN 300 392-7 V3.5.1 (2019-07)
4.4.2.1 MSCs for authentication . 49
4.4.2.2 MSCs for authentication and security type-3 elements . 55
4.4.2.3 Control of authentication timer T354 at MS . 58
4.4a Information request protocol . 59
4.5 OTAR protocols . 62
4.5.1 CCK delivery - protocol functions . 62
4.5.1.0 General . 62
4.5.1.1 SwMI-initiated CCK provision . 63
4.5.1.2 MS-initiated CCK provision with U-OTAR CCK demand. 65
4.5.1.3 MS-initiated CCK provision with announced cell reselection . 65
4.5.2 OTAR protocol functions - SCK . 66
4.5.2.0 General . 66
4.5.2.1 MS requests provision of SCK(s) . 67
4.5.2.2 SwMI provides SCK(s) to individual MS . 68
4.5.2.3 SwMI provides SCK(s) to group of MSs . 70
4.5.2.4 SwMI rejects provision of SCK . 71
4.5.3 OTAR protocol functions - GCK . 72
4.5.3.0 General . 72
4.5.3.1 MS requests provision of GCK . 72
4.5.3.2 SwMI provides GCK to an individual MS . 74
4.5.3.3 SwMI provides GCK to a group of MSs . 75
4.5.3.4 SwMI rejects provision of GCK . 77
4.5.4 Cipher key association to group address . 78
4.5.4.0 General . 78
4.5.4.1 SCK association for DMO . 79
4.5.4.2 GCK association . 82
4.5.5 Notification of key change over the air . 84
4.5.5.0 General . 84
4.5.5.1 Change of DCK . 85
4.5.5.2 Change of CCK . 86
4.5.5.3 Change of GCK . 86
4.5.5.4 Change of SCK for TMO . 86
4.5.5.5 Change of SCK for DMO . 86
4.5.5.6 Synchronization of Cipher Key Change . 87
4.5.6 Security class change . 87
4.5.6.0 General . 87
4.5.6.1 Change of security class to security class 1 . 88
4.5.6.2 Change of security class to security class 2 . 88
4.5.6.3 Change of security class to security class 3 . 88
4.5.6.4 Change of security class to security class 3 with GCK . 88
4.5.7 Notification of key in use . 89
4.5.8 Notification of GCK Activation/Deactivation . 89
4.5.9 Deletion of SCK, GCK and GSKO . 89
4.5.10 Air Interface Key Status Enquiry . 91
4.5.11 Crypto management group . 93
4.5.12 OTAR retry mechanism . 94
4.5.13 OTAR protocol functions - GSKO . 94
4.5.13.0 General . 94
4.5.13.1 MS requests provision of GSKO . 95
4.5.13.2 SwMI provides GSKO to an MS . 95
4.5.13.3 SwMI rejects provision of GSKO . 96
4.5.14 OTAR protocol functions - interaction and queuing . 96
4.5.15 KSOv for OTAR operations in visited SwMI . 96
4.5.16 Transfer of AI cipher keys across the ISI . 100
5 Enable and disable mechanism . 100
5.0 General . 100
5.1 General relationships . 101
5.2 Enable/disable state transitions . 101
5.3 Mechanisms . 102
5.3.0 General . 102
5.3.1 Disable of MS equipment . 103
ETSI

---------------------- Page: 4 ----------------------
5 ETSI EN 300 392-7 V3.5.1 (2019-07)
5.3.2 Disable of an subscription . 103
5.3.3 Disable of subscription and equipment . 103
5.3.4 Enable an MS equipment . 103
5.3.5 Enable an MS subscription . 103
5.3.6 Enable an MS equipment and subscription . 103
5.4 Enable/disable protocol . 104
5.4.1 General case . 104
5.4.2 Status of cipher key material. 105
5.4.2.1 Permanently disabled state . 105
5.4.2.2 Temporarily disabled state . 105
5.4.3 Specific protocol exchanges . 106
5.4.3.0 General . 106
5.4.3.1 Disabling an MS with mutual authentication . 106
5.4.3.2 Enabling an MS with mutual authentication . 107
5.4.3.3 Enabling an MS with non-mutual authentication . 108
5.4.3.4 Disabling an MS with non-mutual authentication . 110
5.4.4 Enabling an MS without authentication . 111
5.4.5 Disabling an MS without authentication . 111
5.4.6 Rejection of enable or disable command . 111
5.4.6a Expiry of Enable/Disable protocol timer . 112
5.4.7 MM service primitives . 112
5.4.7.0 General . 112
5.4.7.1 TNMM-DISABLING primitive . 113
5.4.7.2 TNMM-ENABLING primitive . 113
6 Air Interface (AI) encryption . 113
6.1 General principles. 113
6.2 Security class . 114
6.2.a General . 114
6.2.0 Notification of security class . 115
6.2.0.0 General . 115
6.2.0.1 Security Class of Neighbouring Cells . 116
6.2.0.2 Identification of MS security capabilities . 116
6.2.1 Constraints on LA arising from cell class . 116
6.3 Key Stream Generator (KSG) . 116
6.3.0 General . 116
6.3.1 KSG numbering and selection . 117
6.3.2 Interface parameters . 117
6.3.2.1 Initial Value (IV) . 117
6.3.2.2 Cipher Key . 118
6.4 Encryption mechanism . 118
6.4.0 General . 118
6.4.1 Allocation of KSS to logical channels . 118
6.4.2 Allocation of KSS to logical channels with PDU association . 120
6.4.2.1 General . 120
6.4.2.2 KSS allocation on phase modulation channels . 121
6.4.2.3 KSS allocation on QAM channels . 122
6.4.2.3.0 General . 122
6.4.2.3.1 Fixed mapping . 122
6.4.2.3.2 Offset mapping . 123
6.4.3 Synchronization of data calls where data is multi-slot interleaved . 124
6.4.4 Recovery of stolen frames from interleaved data . 125
6.5 Use of cipher keys . 126
6.5.0 General . 126
6.5.1 Identification of encryption state of downlink MAC PDUs . 127
6.5.1.0 General . 127
6.5.1.1 Class 1 cells . 127
6.5.1.2 Class 2 cells . 128
6.5.1.3 Class 3 cells . 128
6.5.2 Identification of encryption state of uplink MAC PDUs . 128
6.6 Mobil
...

Draft ETSI EN 300 392-7 V3.5.0 (2019-03)






EUROPEAN STANDARD
Terrestrial Trunked Radio (TETRA);
Voice plus Data (V+D);
Part 7: Security

---------------------- Page: 1 ----------------------
2 Draft ETSI EN 300 392-7 V3.5.0 (2019-03)



Reference
REN/TCCE-06196
Keywords
security, TETRA, V+D
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: [phone]  Fax: [phone]

Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88

Important notice
The present document can be downloaded from:
http://www.etsi.org/standards-search
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI
deliverable is the one made publicly available in PDF format at www.etsi.org/deliver.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
https://portal.etsi.org/TB/ETSIDeliverableStatus.aspx
If you find errors in the present document, please send your comment to one of the following services:
https://portal.etsi.org/People/CommiteeSupportStaff.aspx
Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying
and microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.

© ETSI 2019.
All rights reserved.

TM TM TM
DECT , PLUGTESTS , UMTS and the ETSI logo are trademarks of ETSI registered for the benefit of its Members.
TM TM
3GPP and LTE are trademarks of ETSI registered for the benefit of its Members and
of the 3GPP Organizational Partners.
oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and
of the oneM2M Partners.
®
GSM and the GSM logo are trademarks registered and owned by the GSM Association.
ETSI

---------------------- Page: 2 ----------------------
3 Draft ETSI EN 300 392-7 V3.5.0 (2019-03)
Contents
Intellectual Property Rights . 11
Foreword . 11
Modal verbs terminology . 12
1 Scope . 13
2 References . 13
2.1 Normative references . 13
2.2 Informative references . 14
3 Definition of terms, symbols and abbreviations . 15
3.1 Terms . 15
3.2 Symbols . 18
3.3 Abbreviations . 18
4 Air Interface authentication and key management mechanisms . 20
4.a General . 20
4.0 Security classes . 20
4.1 Air interface authentication mechanisms . 21
4.1.1 Overview . 21
4.1.1a Authentication and key management algorithms . 21
4.1.2 Authentication of an MS . 21
4.1.3 Authentication of the infrastructure . 22
4.1.4 Mutual authentication of MS and infrastructure . 23
4.1.5 The authentication key . 25
4.1.6 Equipment authentication . 25
4.1.6a Request for information related to an MS . 26
4.1.7 Authentication of an MS when migrated . 26
4.1.8 Authentication of the home SwMI when migrated . 27
4.1.9 Mutual Authentication of MS and infrastructure when migrated . 28
4.2 Air Interface key management mechanisms . 29
4.2.0 General . 29
4.2.1 The DCK . 29
4.2.2 The GCK . 30
4.2.2.0 General . 30
4.2.2.1 Session key modifier GCK0 . 31
4.2.3 The CCK . 32
4.2.4 The SCK . 33
4.2.4.0 General . 33
4.2.4.1 SCK association for DMO use . 35
4.2.4.1.0 General . 35
4.2.4.1.1 DMO SCK subset grouping . 35
4.2.5 The GSKO . 37
4.2.5.0 General . 37
4.2.5.1 SCK distribution to groups with OTAR . 38
4.2.5.2 GCK distribution to groups with OTAR . 38
4.2.5.3 Rules for MS response to group key distribution . 39
4.2.6 Encrypted Short Identity (ESI) mechanism . 39
4.2.7 Encryption Cipher Key . 40
4.2.8 Summary of AI key management mechanisms . 40
4.3 Service description and primitives . 42
4.3.1 Authentication primitives . 42
4.3.2 SCK transfer primitives . 42
4.3.3 GCK transfer primitives . 43
4.3.4 GSKO transfer primitives . 44
4.4 Authentication protocol . 45
4.4.1 Authentication state transitions . 45
4.4.2 Authentication protocol sequences and operations . 48
4.4.2.0 General . 48
ETSI

---------------------- Page: 3 ----------------------
4 Draft ETSI EN 300 392-7 V3.5.0 (2019-03)
4.4.2.1 MSCs for authentication . 49
4.4.2.2 MSCs for authentication and security type-3 elements . 55
4.4.2.3 Control of authentication timer T354 at MS . 58
4.4a Information request protocol . 59
4.5 OTAR protocols . 62
4.5.1 CCK delivery - protocol functions . 62
4.5.1.0 General . 62
4.5.1.1 SwMI-initiated CCK provision . 63
4.5.1.2 MS-initiated CCK provision with U-OTAR CCK demand. 65
4.5.1.3 MS-initiated CCK provision with announced cell reselection . 65
4.5.2 OTAR protocol functions - SCK . 66
4.5.2.0 General . 66
4.5.2.1 MS requests provision of SCK(s) . 67
4.5.2.2 SwMI provides SCK(s) to individual MS . 68
4.5.2.3 SwMI provides SCK(s) to group of MSs . 70
4.5.2.4 SwMI rejects provision of SCK . 71
4.5.3 OTAR protocol functions - GCK . 72
4.5.3.0 General . 72
4.5.3.1 MS requests provision of GCK . 72
4.5.3.2 SwMI provides GCK to an individual MS . 74
4.5.3.3 SwMI provides GCK to a group of MSs . 75
4.5.3.4 SwMI rejects provision of GCK . 77
4.5.4 Cipher key association to group address . 78
4.5.4.0 General . 78
4.5.4.1 SCK association for DMO . 79
4.5.4.2 GCK association . 82
4.5.5 Notification of key change over the air . 84
4.5.5.0 General . 84
4.5.5.1 Change of DCK . 85
4.5.5.2 Change of CCK . 86
4.5.5.3 Change of GCK . 86
4.5.5.4 Change of SCK for TMO . 86
4.5.5.5 Change of SCK for DMO . 86
4.5.5.6 Synchronization of Cipher Key Change . 87
4.5.6 Security class change . 87
4.5.6.0 General . 87
4.5.6.1 Change of security class to security class 1 . 88
4.5.6.2 Change of security class to security class 2 . 88
4.5.6.3 Change of security class to security class 3 . 88
4.5.6.4 Change of security class to security class 3 with GCK . 88
4.5.7 Notification of key in use . 89
4.5.8 Notification of GCK Activation/Deactivation . 89
4.5.9 Deletion of SCK, GCK and GSKO . 89
4.5.10 Air Interface Key Status Enquiry . 91
4.5.11 Crypto management group . 93
4.5.12 OTAR retry mechanism . 94
4.5.13 OTAR protocol functions - GSKO . 94
4.5.13.0 General . 94
4.5.13.1 MS requests provision of GSKO . 95
4.5.13.2 SwMI provides GSKO to an MS . 95
4.5.13.3 SwMI rejects provision of GSKO . 96
4.5.14 OTAR protocol functions - interaction and queuing . 96
4.5.15 KSOv for OTAR operations in visited SwMI . 96
4.5.16 Transfer of AI cipher keys across the ISI . 100
5 Enable and disable mechanism . 100
5.0 General . 100
5.1 General relationships . 101
5.2 Enable/disable state transitions . 101
5.3 Mechanisms . 102
5.3.0 General . 102
5.3.1 Disable of MS equipment . 103
ETSI

---------------------- Page: 4 ----------------------
5 Draft ETSI EN 300 392-7 V3.5.0 (2019-03)
5.3.2 Disable of an subscription . 103
5.3.3 Disable of subscription and equipment . 103
5.3.4 Enable an MS equipment . 103
5.3.5 Enable an MS subscription . 103
5.3.6 Enable an MS equipment and subscription . 103
5.4 Enable/disable protocol . 104
5.4.1 General case . 104
5.4.2 Status of cipher key material. 105
5.4.2.1 Permanently disabled state . 105
5.4.2.2 Temporarily disabled state . 105
5.4.3 Specific protocol exchanges . 106
5.4.3.0 General . 106
5.4.3.1 Disabling an MS with mutual authentication . 106
5.4.3.2 Enabling an MS with mutual authentication . 107
5.4.3.3 Enabling an MS with non-mutual authentication . 108
5.4.3.4 Disabling an MS with non-mutual authentication . 110
5.4.4 Enabling an MS without authentication . 111
5.4.5 Disabling an MS without authentication . 111
5.4.6 Rejection of enable or disable command . 111
5.4.6a Expiry of Enable/Disable protocol timer . 112
5.4.7 MM service primitives . 112
5.4.7.0 General . 112
5.4.7.1 TNMM-DISABLING primitive . 113
5.4.7.2 TNMM-ENABLING primitive . 113
6 Air Interface (AI) encryption . 113
6.1 General principles. 113
6.2 Security class . 114
6.2.a General . 114
6.2.0 Notification of security class . 115
6.2.0.0 General . 115
6.2.0.1 Security Class of Neighbouring Cells . 116
6.2.0.2 Identification of MS security capabilities . 116
6.2.1 Constraints on LA arising from cell class . 116
6.3 Key Stream Generator (KSG) . 116
6.3.0 General . 116
6.3.1 KSG numbering and selection . 117
6.3.2 Interface parameters . 117
6.3.2.1 Initial Value (IV) . 117
6.3.2.2 Cipher Key . 118
6.4 Encryption mechanism . 118
6.4.0 General . 118
6.4.1 Allocation of KSS to logical channels . 118
6.4.2 Allocation of KSS to logical channels with PDU association . 120
6.4.2.1 General . 120
6.4.2.2 KSS allocation on phase modulation channels . 121
6.4.2.3 KSS allocation on QAM channels . 122
6.4.2.3.0 General . 122
6.4.2.3.1 Fixed mapping . 122
6.4.2.3.2 Offset mapping . 123
6.4.3 Synchronization of data calls where data is multi-slot interleaved . 124
6.4.4 Recovery of stolen frames from interleaved data . 125
6.5 Use of cipher keys . 126
6.5.0 General . 126
6.5.1 Identification of encryption state of downlink MAC PDUs . 127
6.5.1.0 General . 127
6.5.1.1 Class 1 cells . 127
6.5.1.2 Class 2 cells . 128
6.5.1.3 Class 3 cells . 128
6.5.2 Identification of encryption state of uplink MAC PDUs .
...

SLOVENSKI
STANDARD SIST EN 300 392-7 V3.5.1:201901-september-2019Prizemni snopovni radio (TETRA) - Govor in podatki (V+D) - 7. del: VarnostTerrestrial Trunked Radio (TETRA) - Voice plus Data (V+D) - Part 7: SecurityTa slovenski standard je istoveten z:ETSI EN 300 392-7 V3.5.1 (2019-07)33.070.10Prizemni snopovni radio (TETRA)Terrestrial Trunked Radio (TETRA)ICS:SIST EN 300 392-7 V3.5.1:2019en2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.



SIST EN 300 392-7 V3.5.1:2019



ETSI EN 300 392-7 V3.5.1 (2019-07) Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 7: Security
EUROPEAN STANDARD SIST EN 300 392-7 V3.5.1:2019



ETSI ETSI EN 300 392-7 V3.5.1 (2019-07) 2
Reference REN/TCCE-06196 Keywords security, TETRA, V+D ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE
Tel.: [phone]
Fax: [phone]
Siret N° 348 623 562 00017 - NAF 742 C Association à but non lucratif enregistrée à la Sous-Préfecture de Grasse (06) N° 7803/88
Important notice The present document can be downloaded from: http://www.etsi.org/standards-search The present document may be made available in electronic versions and/or in print. The content of any electronic and/or print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI deliverable is the one made publicly available in PDF format at www.etsi.org/deliver. Users of the present document should be aware that the document may be subject to revision or change of status. Information on the current status of this and other ETSI documents is available at https://portal.etsi.org/TB/ETSIDeliverableStatus.aspx If you find errors in the present document, please send your comment to one of the following services: https://portal.etsi.org/People/CommiteeSupportStaff.aspx Copyright Notification No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm except as authorized by written permission of ETSI. The content of the PDF version shall not be modified without the written authorization of ETSI. The copyright and the foregoing restriction extend to reproduction in all media.
© ETSI 2019. All rights reserved.
DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its Members. 3GPP™ and LTE™ are trademarks of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and of the oneM2M Partners. GSM® and the GSM logo are trademarks registered and owned by the GSM Association. SIST EN 300 392-7 V3.5.1:2019



ETSI ETSI EN 300 392-7 V3.5.1 (2019-07) 3 Contents Intellectual Property Rights . 11 Foreword . 11 Modal verbs terminology . 12 1 Scope . 13 2 References . 13 2.1 Normative references . 13 2.2 Informative references . 14 3 Definition of terms, symbols and abbreviations . 15 3.1 Terms . 15 3.2 Symbols . 18 3.3 Abbreviations . 18 4 Air Interface authentication and key management mechanisms . 20 4.a General . 20 4.0 Security classes . 20 4.1 Air interface authentication mechanisms . 21 4.1.1 Overview . 21 4.1.1a Authentication and key management algorithms . 21 4.1.2 Authentication of an MS . 21 4.1.3 Authentication of the infrastructure . 22 4.1.4 Mutual authentication of MS and infrastructure . 23 4.1.5 The authentication key . 25 4.1.6 Equipment authentication . 25 4.1.6a Request for information related to an MS . 26 4.1.7 Authentication of an MS when migrated . 26 4.1.8 Authentication of the home SwMI when migrated . 27 4.1.9 Mutual Authentication of MS and infrastructure when migrated . 28 4.2 Air Interface key management mechanisms . 29 4.2.0 General . 29 4.2.1 The DCK . 29 4.2.2 The GCK . 30 4.2.2.0 General . 30 4.2.2.1 Session key modifier GCK0 . 31 4.2.3 The CCK . 32 4.2.4 The SCK . 33 4.2.4.0 General . 33 4.2.4.1 SCK association for DMO use . 35 4.2.4.1.0 General . 35 4.2.4.1.1 DMO SCK subset grouping . 35 4.2.5 The GSKO . 37 4.2.5.0 General . 37 4.2.5.1 SCK distribution to groups with OTAR . 38 4.2.5.2 GCK distribution to groups with OTAR . 38 4.2.5.3 Rules for MS response to group key distribution . 39 4.2.6 Encrypted Short Identity (ESI) mechanism . 39 4.2.7 Encryption Cipher Key . 40 4.2.8 Summary of AI key management mechanisms . 40 4.3 Service description and primitives . 42 4.3.1 Authentication primitives . 42 4.3.2 SCK transfer primitives . 42 4.3.3 GCK transfer primitives . 43 4.3.4 GSKO transfer primitives . 44 4.4 Authentication protocol . 45 4.4.1 Authentication state transitions . 45 4.4.2 Authentication protocol sequences and operations . 48 4.4.2.0 General . 48 SIST EN 300 392-7 V3.5.1:2019



ETSI ETSI EN 300 392-7 V3.5.1 (2019-07) 4 4.4.2.1 MSCs for authentication . 49 4.4.2.2 MSCs for authentication and security type-3 elements . 55 4.4.2.3 Control of authentication timer T354 at MS . 58 4.4a Information request protocol . 59 4.5 OTAR protocols . 62 4.5.1 CCK delivery - protocol functions . 62 4.5.1.0 General . 62 4.5.1.1 SwMI-initiated CCK provision . 63 4.5.1.2 MS-initiated CCK provision with U-OTAR CCK demand. 65 4.5.1.3 MS-initiated CCK provision with announced cell reselection . 65 4.5.2 OTAR protocol functions - SCK . 66 4.5.2.0 General . 66 4.5.2.1 MS requests provision of SCK(s) . 67 4.5.2.2 SwMI provides SCK(s) to individual MS . 68 4.5.2.3 SwMI provides SCK(s) to group of MSs . 70 4.5.2.4 SwMI rejects provision of SCK . 71 4.5.3 OTAR protocol functions - GCK . 72 4.5.3.0 General . 72 4.5.3.1 MS requests provision of GCK . 72 4.5.3.2 SwMI provides GCK to an individual MS . 74 4.5.3.3 SwMI provides GCK to a group of MSs . 75 4.5.3.4 SwMI rejects provision of GCK . 77 4.5.4 Cipher key association to group address . 78 4.5.4.0 General . 78 4.5.4.1 SCK association for DMO . 79 4.5.4.2 GCK association . 82 4.5.5 Notification of key change over the air . 84 4.5.5.0 General . 84 4.5.5.1 Change of DCK . 85 4.5.5.2 Change of CCK . 86 4.5.5.3 Change of GCK . 86 4.5.5.4 Change of SCK for TMO . 86 4.5.5.5 Change of SCK for DMO . 86 4.5.5.6 Synchronization of Cipher Key Change . 87 4.5.6 Security class change . 87 4.5.6.0 General . 87 4.5.6.1 Change of security class to security class 1 . 88 4.5.6.2 Change of security class to security class 2 . 88 4.5.6.3 Change of security class to security class 3 . 88 4.5.6.4 Change of security class to security class 3 with GCK . 88 4.5.7 Notification of key in use . 89 4.5.8 Notification of GCK Activation/Deactivation . 89 4.5.9 Deletion of SCK, GCK and GSKO . 89 4.5.10 Air Interface Key Status Enquiry . 91 4.5.11 Crypto management group . 93 4.5.12 OTAR retry mechanism . 94 4.5.13 OTAR protocol functions - GSKO . 94 4.5.13.0 General . 94 4.5.13.1 MS requests provision of GSKO . 95 4.5.13.2 SwMI provides GSKO to an MS . 95 4.5.13.3 SwMI rejects provision of GSKO . 96 4.5.14 OTAR protocol functions - interaction and queuing . 96 4.5.15 KSOv for OTAR operations in visited SwMI . 96 4.5.16 Transfer of AI cipher keys across the ISI . 100 5 Enable and disable mechanism . 100 5.0 General . 100 5.1 General relationships . 101 5.2 Enable/disable state transitions . 101 5.3 Mechanisms . 102 5.3.0 General . 102 5.3.1 Disable of MS equipment . 103 SIST EN 300 392-7 V3.5.1:2019



ETSI ETSI EN 300 392-7 V3.5.1 (2019-07) 5 5.3.2 Disable of an subscription . 103 5.3.3 Disable of subscription and equipment . 103 5.3.4 Enable an MS equipment . 103 5.3.5 Enable an MS subscription . 103 5.3.6 Enable an MS equipment and subscription . 103 5.4 Enable/disable protocol . 104 5.4.1 General case . 104 5.4.2 Status of cipher key material. 105 5.4.2.1 Permanently disabled state . 105 5.4.2.2 Temporarily disabled state . 105 5.4.3 Specific protocol exchanges . 106 5.4.3.0 General . 106 5.4.3.1 Disabling an MS with mutual authentication . 106 5.4.3.2 Enabling an MS with mutual authentication . 107 5.4.3.3 Enabling an MS with non-mutual authentication . 108 5.4.3.4 Disabling an MS with non-mutual authentication . 110 5.4.4 Enabling an MS without authentication . 111 5.4.5 Disabling an MS without authentication . 111 5.4.6 Rejection of enable or disable command . 111 5.4.6a Expiry of Enable/Disable protocol timer . 112 5.4.7 MM service primitives . 112 5.4.7.0 General . 112 5.4.7.1 TNMM-DISABLING primitive . 113 5.4.7.2 TNMM-ENABLING primitive . 113 6 Air Interface (AI) encryption . 113 6.1 General principles. 113 6.2 Security class . 114 6.2.a General . 114 6.2.0 Notification of security class . 115 6.2.0.0 General . 115 6.2.0.1 Security Class of Neighbouring Cells . 116 6.2.0.2 Identification of MS security capabilities . 116 6.2.1 Constraints on LA arising from cell class . 116 6.3 Key Stream Generator (KSG) . 116 6.3.0 General . 116 6.3.1 KSG numbering and selection . 117 6.3.2 Interface parameters . 117 6.3.2.1 Initial Value (IV) . 117 6.3.2.2 Cipher Key . 118 6.4 Encryption mechanism . 118 6.4.0 General . 118 6.4.1 Allocation of KSS to logical channels . 118 6.4.2 Allocation of KSS to logical channels with PDU association . 120 6.4.2.1 General . 120 6.4.2.2 KSS allocation on phase modulation channels . 121 6.4.2.3 KSS allocation on QAM channels . 122 6.4.2.3.0 General . 122 6.4.2.3.1 Fixed mapping . 122 6.4.2.3.2 Offset mapping . 123 6.4.3 Synchronization of data calls where data is multi-slot interleaved . 124 6.4.4 Recovery of stolen frames from interleaved data . 125 6.5 Use of cipher keys . 126 6.5.0 General . 126 6.5.1 Identification of encryption state of downlink MAC PDUs . 127 6.5.1.0 General . 127 6.5.1.1 Class 1 cells . 127 6.5.1.2 Class 2 cells . 128 6.5.1.3 Class 3 cells .
...

SLOVENSKI STANDARD
oSIST prEN 300 392-7 V3.5.0:2019
01-maj-2019
Prizemni snopovni radio (TETRA) - Govor in podatki (V+D) - 7. del: Varnost
Terrestrial Trunked Radio (TETRA) - Voice plus Data (V+D) - Part 7: Security
Ta slovenski standard je istoveten z: ETSI EN 300 392-7 V3.5.0 (2019-03)
ICS:
33.070.10 Prizemni snopovni radio Terrestrial Trunked Radio
(TETRA) (TETRA)
oSIST prEN 300 392-7 V3.5.0:2019 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 300 392-7 V3.5.0:2019

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oSIST prEN 300 392-7 V3.5.0:2019
Draft ETSI EN 300 392-7 V3.5.0 (2019-03)






EUROPEAN STANDARD
Terrestrial Trunked Radio (TETRA);
Voice plus Data (V+D);
Part 7: Security

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oSIST prEN 300 392-7 V3.5.0:2019

2 Draft ETSI EN 300 392-7 V3.5.0 (2019-03)



Reference
REN/TCCE-06196
Keywords
security, TETRA, V+D
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: [phone]  Fax: [phone]

Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88

Important notice
The present document can be downloaded from:
http://www.etsi.org/standards-search
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI
deliverable is the one made publicly available in PDF format at www.etsi.org/deliver.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
https://portal.etsi.org/TB/ETSIDeliverableStatus.aspx
If you find errors in the present document, please send your comment to one of the following services:
https://portal.etsi.org/People/CommiteeSupportStaff.aspx
Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying
and microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.

© ETSI 2019.
All rights reserved.

TM TM TM
DECT , PLUGTESTS , UMTS and the ETSI logo are trademarks of ETSI registered for the benefit of its Members.
TM TM
3GPP and LTE are trademarks of ETSI registered for the benefit of its Members and
of the 3GPP Organizational Partners.
oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and
of the oneM2M Partners.
®
GSM and the GSM logo are trademarks registered and owned by the GSM Association.
ETSI

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oSIST prEN 300 392-7 V3.5.0:2019

3 Draft ETSI EN 300 392-7 V3.5.0 (2019-03)
Contents
Intellectual Property Rights . 11
Foreword . 11
Modal verbs terminology . 12
1 Scope . 13
2 References . 13
2.1 Normative references . 13
2.2 Informative references . 14
3 Definition of terms, symbols and abbreviations . 15
3.1 Terms . 15
3.2 Symbols . 18
3.3 Abbreviations . 18
4 Air Interface authentication and key management mechanisms . 20
4.a General . 20
4.0 Security classes . 20
4.1 Air interface authentication mechanisms . 21
4.1.1 Overview . 21
4.1.1a Authentication and key management algorithms . 21
4.1.2 Authentication of an MS . 21
4.1.3 Authentication of the infrastructure . 22
4.1.4 Mutual authentication of MS and infrastructure . 23
4.1.5 The authentication key . 25
4.1.6 Equipment authentication . 25
4.1.6a Request for information related to an MS . 26
4.1.7 Authentication of an MS when migrated . 26
4.1.8 Authentication of the home SwMI when migrated . 27
4.1.9 Mutual Authentication of MS and infrastructure when migrated . 28
4.2 Air Interface key management mechanisms . 29
4.2.0 General . 29
4.2.1 The DCK . 29
4.2.2 The GCK . 30
4.2.2.0 General . 30
4.2.2.1 Session key modifier GCK0 . 31
4.2.3 The CCK . 32
4.2.4 The SCK . 33
4.2.4.0 General . 33
4.2.4.1 SCK association for DMO use . 35
4.2.4.1.0 General . 35
4.2.4.1.1 DMO SCK subset grouping . 35
4.2.5 The GSKO . 37
4.2.5.0 General . 37
4.2.5.1 SCK distribution to groups with OTAR . 38
4.2.5.2 GCK distribution to groups with OTAR . 38
4.2.5.3 Rules for MS response to group key distribution . 39
4.2.6 Encrypted Short Identity (ESI) mechanism . 39
4.2.7 Encryption Cipher Key . 40
4.2.8 Summary of AI key management mechanisms . 40
4.3 Service description and primitives . 42
4.3.1 Authentication primitives . 42
4.3.2 SCK transfer primitives . 42
4.3.3 GCK transfer primitives . 43
4.3.4 GSKO transfer primitives . 44
4.4 Authentication protocol . 45
4.4.1 Authentication state transitions . 45
4.4.2 Authentication protocol sequences and operations . 48
4.4.2.0 General . 48
ETSI

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4 Draft ETSI EN 300 392-7 V3.5.0 (2019-03)
4.4.2.1 MSCs for authentication . 49
4.4.2.2 MSCs for authentication and security type-3 elements . 55
4.4.2.3 Control of authentication timer T354 at MS . 58
4.4a Information request protocol . 59
4.5 OTAR protocols . 62
4.5.1 CCK delivery - protocol functions . 62
4.5.1.0 General . 62
4.5.1.1 SwMI-initiated CCK provision . 63
4.5.1.2 MS-initiated CCK provision with U-OTAR CCK demand. 65
4.5.1.3 MS-initiated CCK provision with announced cell reselection . 65
4.5.2 OTAR protocol functions - SCK . 66
4.5.2.0 General . 66
4.5.2.1 MS requests provision of SCK(s) . 67
4.5.2.2 SwMI provides SCK(s) to individual MS . 68
4.5.2.3 SwMI provides SCK(s) to group of MSs . 70
4.5.2.4 SwMI rejects provision of SCK . 71
4.5.3 OTAR protocol functions - GCK . 72
4.5.3.0 General . 72
4.5.3.1 MS requests provision of GCK . 72
4.5.3.2 SwMI provides GCK to an individual MS . 74
4.5.3.3 SwMI provides GCK to a group of MSs . 75
4.5.3.4 SwMI rejects provision of GCK . 77
4.5.4 Cipher key association to group address . 78
4.5.4.0 General . 78
4.5.4.1 SCK association for DMO . 79
4.5.4.2 GCK association . 82
4.5.5 Notification of key change over the air . 84
4.5.5.0 General . 84
4.5.5.1 Change of DCK . 85
4.5.5.2 Change of CCK . 86
4.5.5.3 Change of GCK . 86
4.5.5.4 Change of SCK for TMO . 86
4.5.5.5 Change of SCK for DMO . 86
4.5.5.6 Synchronization of Cipher Key Change . 87
4.5.6 Security class change . 87
4.5.6.0 General . 87
4.5.6.1 Change of security class to security class 1 . 88
4.5.6.2 Change of security class to security class 2 . 88
4.5.6.3 Change of security class to security class 3 . 88
4.5.6.4 Change of security class to security class 3 with GCK . 88
4.5.7 Notification of key in use . 89
4.5.8 Notification of GCK Activation/Deactivation . 89
4.5.9 Deletion of SCK, GCK and GSKO . 89
4.5.10 Air Interface Key Status Enquiry . 91
4.5.11 Crypto management group . 93
4.5.12 OTAR retry mechanism . 94
4.5.13 OTAR protocol functions - GSKO . 94
4.5.13.0 General . 94
4.5.13.1 MS requests provision of GSKO . 95
4.5.13.2 SwMI provides GSKO to an MS . 95
4.5.13.3 SwMI rejects provision of GSKO . 96
4.5.14 OTAR protocol functions - interaction and queuing . 96
4.5.15 KSOv for OTAR operations in visited SwMI . 96
4.5.16 Transfer of AI cipher keys across the ISI . 100
5 Enable and disable mechanism . 100
5.0 General . 100
5.1 General relationships . 101
5.2 Enable/disable state transitions . 101
5.3 Mechanisms . 102
5.3.0 General . 102
5.3.1 Disable of MS equipment . 103
ETSI

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5 Draft ETSI EN 300 392-7 V3.5.0 (2019-03)
5.3.2 Disable of an subscription . 103
5.3.3 Disable of subscription and equipment . 103
5.3.4 Enable an MS equipment . 103
5.3.5 Enable an MS subscription . 103
5.3.6 Enable an MS equipment and subscription . 103
5.4 Enable/disable protocol . 104
5.4.1 General case . 104
5.4.2 Status of cipher key material. 105
5.4.2.1 Permanently disabled state . 105
5.4.2.2 Temporarily disabled state . 105
5.4.3 Specific protocol exchanges . 106
5.4.3.0 General . 106
5.4.3.1 Disabling an MS with mutual authentication . 106
5.4.3.2 Enabling an MS with mutual authentication . 107
5.4.3.3 Enabling an MS with non-mutual authentication . 108
5.4.3.4 Disabling an MS with non-mutual authentication . 110
5.4.4 Enabling an MS without authentication . 111
5.4.5 Disabling an MS without authentication . 111
5.4.6 Rejection of enable or disable command . 111
5.4.6a Expiry of Enable/Disable protocol timer . 112
5.4.7 MM service primitives . 112
5.4.7.0 General . 112
5.4.7.1 TNMM-DISABLING primitive . 113
5.4.7.2 TNMM-ENABLING primitive . 113
6 Air Interface (AI) encryption . 113
6.1 General principles. 113
6.2 Security class . 114
6.2.a General . 114
6.2.0 Notification of security class . 115
6.2.0.0 General . 115
6.2.0.1 Security Class of Neighbouring Cells . 116
6.2.0.2 Identification of MS security capabilities . 116
6.2.1 Constraints on LA arising from cell class . 116
6.3 Key Stream Generator (KSG) . 116
6.3.0 General . 116
6.3.1 KSG numbering and selection . 117
6.3.2 Interface parameters . 117
6.3.2.1 Initial Value (IV) . 117
6.3.2.2 Cipher Key . 118
6.4 Encryption mechanism . 118
6.4.0 General . 118
6.4.1 Allocation of KSS to logical channels . 118
6.4.2 Allocation of KSS to logical channels with PDU association . 120
6.4.2.1 General . 120
6.4.2.2 KSS allocation on phase modulation channels . 121
6.4.2.3 KSS allocation on QAM channels . 122
6.4.2.3.0 General . 122
6.4.2.3.1 Fixed mapping . 122
6.4.2.3.2 Offset mapping . 123
6.4.3 Synchronization of data calls where data is multi-slot interleaved . 124
6.4.4 Recovery of stolen frames from interleaved data . 125
6.5 Use of cipher keys . 126
6.5.0 General . 126
6.5.1 Identification of encryption state of downlink MAC PDUs .
...