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A Root of Trust is the component in a computing system that everything else relies on for establishing trust between components and performing critical security operations. It must be immutable, so that attackers cannot alter its contents or behaviour. It stores cryptographic keys and performs operations with them, for example verifying the authenticity of firmware during system boot.

Secure Boot, firmware updates, device identity, and secure communication all rely on the trust and security foundation built on the Root of Trust. If the Root of Trust is weak or compromised, none of them hold.

This document provides an overview of the key features and functionalities of the nQrux® Root of trust IP core.