Automotive Network Security uses mostly known standards to protect communication inside the vehicle. Protocols like SSL/TLS, IPsec, and MACsec are also used in other industries and some additional automotive-specific solutions like SecOC exist.
The main difference between Network Security in vehicles and most other areas are in special aspects, like the startup time of the solutions. While in most industries the startup of a security solution may take seconds without problems, in the automotive use cases a startup in a few milliseconds is required.
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