A Note on Copy-Protection from Random Oracles

Quantum copy-protection, introduced by Aaronson (CCC'09), uses the no-cloning principle of quantum mechanics to protect software from being illegally distributed. Constructing copy-protection has been an important problem in quantum cryptography. Since copy-protection is shown to be impossible...

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Bibliographic Details
Published in:arXiv.org 2022-08
Main Authors: Prabhanjan Ananth, Kaleoglu, Fatih
Format: Article
Language:English
Subjects:
Cloning
Quantum cryptography
Quantum mechanics
Online Access:Get full text
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Summary:Quantum copy-protection, introduced by Aaronson (CCC'09), uses the no-cloning principle of quantum mechanics to protect software from being illegally distributed. Constructing copy-protection has been an important problem in quantum cryptography. Since copy-protection is shown to be impossible to achieve in the plain model, we investigate the question of constructing copy-protection for arbitrary classes of unlearnable functions in the random oracle model. We present an impossibility result that rules out a class of copy-protection schemes in the random oracle model assuming the existence of quantum fully homomorphic encryption and quantum hardness of learning with errors. En route, we prove the impossibility of approximately correct copy-protection in the plain model.
ISSN:2331-8422