The Landscape of Security from Physical Assumptions

We survey several security assumptions based on physical principles as opposed to more common complexity-theoretic assumptions. This survey focuses on obtaining security guarantees via i) idealized hardware and ii) physical objects, and specifies how these assumptions have been used for devising cryptographic protocols, such as protocols for secure multi-party computation. Note that due to these assumptions, the protocols are often conceptually simpler, the security is independent of the computational power of an attacker, and the functioning and security is more transparent to humans.