Optical scheme for cryptographic commitments with physical unclonable keys

TL;DR

This paper proposes an optical cryptographic commitment scheme using multiple-scattering media, leveraging wavefront-shaping and heterodyne detection, which can be implemented with current technology and offers security in a tamper-resistant setup.

Contribution

It introduces a novel optical commitment protocol utilizing physical unclonable keys and standard optical techniques, enhancing security in cryptographic commitments.

Findings

Protocol is feasible with current optical technology.

Security is analyzed within a tamper-resistant framework.

Potential applications in secure cryptographic tasks.

Abstract

We investigate the possibility of using multiple-scattering optical media, as resources of randomness in cryptographic tasks pertaining to commitments and auctions. The proposed commitment protocol exploits standard wavefront-shaping and heterodyne-detection techniques, and can be implemented with current technology. Its security is discussed in the framework of a tamper-resistant trusted setup.