Hardware root of trust, Hardware security primitives

PUF https://en.m.wikipedia.org/wiki/Physical_unclonable_function

Specialized crypto ops vs small open/generic TCB.

VHDL libraries

Chain of trust, up to firmware and software layer. Level of integration vs modularity.

TouchID with SE . Samsung. Yubikey, Gemalto,

Electronic logging devices. ELD tamper proofing

Secure provisioning. Intel EPID

Rust, memory safey, cargo, toml, policy engine, fortanix, azure IoT

Key management with enclaves

Trusted VMs and cloud security

Platform security 

Isolated memory on shared infra