Quantum Lock: A Provable Quantum Communication Advantage

Quantum Lock: A Provable Quantum Communication Advantage

Blog Article

Physical unclonable functions(PUFs) provide a unique fingerprint to a physical entity by exploiting the inherent physical randomness.Gao et al.discussed the vulnerability of most current-day PUFs to sophisticated machine learning-based attacks.

We address this problem by integrating classical PUFs and existing quantum communication technology.Specifically, this paper proposes a generic design of provably secure PUFs, called hybrid Roll On locked PUFs(HLPUFs), providing a practical solution for securing classical PUFs.An HLPUF uses a classical PUF(CPUF), and encodes the output into non-orthogonal quantum states to hide the outcomes of the underlying CPUF from any adversary.

Here we introduce a quantum lock to protect the HLPUFs from any general adversaries.The indistinguishability property of the non-orthogonal quantum states, together with the quantum lockdown technique prevents the adversary from accessing the outcome of the CPUFs.Moreover, we show that by exploiting non-classical properties of quantum states, the HLPUF allows the server to reuse the challenge-response pairs for further client authentication.

This result provides an efficient solution for running PUF-based client authentication for an extended period while maintaining a small-sized challenge-response pairs Focus database on the server side.Later, we support our theoretical contributions by instantiating the HLPUFs design using accessible real-world CPUFs.We use the optimal classical machine-learning attacks to forge both the CPUFs and HLPUFs, and we certify the security gap in our numerical simulation for construction which is ready for implementation.