Unclonable Cryptography: A Tale of Two No-Cloning Paradigms

Ghada Almashaqbeh, Rohit Chatterjee

2023

Abstract

Unclonable cryptography builds primitives that enjoy some form of unclonability, such as quantum money, software copy protection, and bounded execution programs. These are impossible in the classical model as classical data is inherently clonable. Quantum computing, with its no-cloning principle, offers a solution. However, it is not enough to realize bounded execution programs; these require one-time memory devices that self-destruct after a single data retrieval query. Very recently, a new no-cloning technology has been introduced [Eurocrypt’22], showing that unclonable polymers—proteins—can be used to build bounded-query memory devices and unclonable cryptographic applications. In this paper, we investigate the relation between these two technologies; whether one can replace the other, or complement each other such that combining them brings the best of both worlds. Towards this goal, we review the quantum and unclonable polymer models, and existing unclonable cryptographic primitives. Then, we discuss whether these primitives can be built using the other technology, and show alternative constructions and notions when possible. We also offer insights and remarks for the road ahead. We believe that this study will contribute in advancing the field of unclonable cryptography on two fronts: developing new primitives, and realizing existing ones using new constructions.

Paper Citation

in Harvard Style

Almashaqbeh G. and Chatterjee R. (2023). Unclonable Cryptography: A Tale of Two No-Cloning Paradigms. In Proceedings of the 20th International Conference on Security and Cryptography - Volume 1: SECRYPT; ISBN 978-989-758-666-8, SciTePress, pages 469-477. DOI: 10.5220/0012118600003555

in Bibtex Style

@conference{secrypt23,
author={Ghada Almashaqbeh and Rohit Chatterjee},
title={Unclonable Cryptography: A Tale of Two No-Cloning Paradigms},
booktitle={Proceedings of the 20th International Conference on Security and Cryptography - Volume 1: SECRYPT},
year={2023},
pages={469-477},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0012118600003555},
isbn={978-989-758-666-8},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 20th International Conference on Security and Cryptography - Volume 1: SECRYPT
TI - Unclonable Cryptography: A Tale of Two No-Cloning Paradigms
SN - 978-989-758-666-8
AU - Almashaqbeh G.
AU - Chatterjee R.
PY - 2023
SP - 469
EP - 477
DO - 10.5220/0012118600003555
PB - SciTePress