1 Scope
This document contains specifications for a set of ITS station security services required
to ensure the authenticity of the source and integrity of information exchanged between
trusted entities, i.e.:
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— between devices operated as bounded secured managed entities, i.e. "ITS Station Communication
Units" (ITS-SCU) and "ITS station units" (ITS-SU) as specified in ISO 21217; and
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— between ITS-SUs (composed of one or several ITS-SCUs) and external trusted entities
such as sensor and control networks.
These services include the authentication and secure session establishment which are
required to exchange information in a trusted and secure manner.
These services are essential for many intelligent transport system (ITS) applications and services including time-critical safety applications, automated driving, remote management of ITS stations (ISO 24102‑2), and roadside/infrastructure-related services.