Today, there is general agreement amongst most stakeholders that IoT is not going to take off and reach its full potential unless we come up with a solid approach to securing both the “Things” in IoT and the communication between them. An Arm-led initiative which is specifically relevant to device OEMs and silicon manufacturers is the Platform Security Architecture or PSA. PSA is a framework that aims to secure a trillion connected devices by providing a scalable and hardware-backed approach to threat analysis, system architecture and reference implementations for IoT devices.
In this article we will show how SRAM PUF technology is a very good fit to some of the most fundamental PSA objectives. In particular it enables a strong and flexible protection for the heart of the Root of Trust: the immutable Root of Trust – the part that stays unchanged over the lifetime of a device.
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