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Standard
ISO 21177
Second edition
Intelligent transport systems —
2024-03
ITS station security services for
secure session establishment
and authentication between
trusted devices
Systèmes de transport intelligents — Services de sécurité des
stations ITS pour l’établissement et l’authentification des sessions
sécurisées entre dispositifs de confiance
Reference number
ISO 21177:2024(en) © ISO 2024
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ISO 21177:2024(en)
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© ISO 2024
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Published in Switzerland
© ISO 2024 – All rights reserved
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ISO 21177:2024(en)
Contents Page
Foreword .vi
Introduction .vii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Abbreviated terms . 2
5 Overview . 4
5.1 General description, relationship to transport layer security (TLS) and relationship to
application specifications .4
5.2 Goals .5
5.3 Architecture and functional entities .5
5.4 Cryptomaterial handles .10
5.5 Session IDs and state .10
5.6 Access control and authorization state .11
5.7 Application level non-repudiation .11
5.8 Service primitive conventions .11
6 Process flows and sequence diagrams .12
6.1 General .
...