A Note on Copy-Protection from Random Oracles

Prabhanjan Ananth; Fatih Kaleoglu

Paper 2022/1109

A Note on Copy-Protection from Random Oracles

Prabhanjan Ananth, University of California, Santa Barbara

Fatih Kaleoglu, University of California, Santa Barbara

Abstract

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.

Metadata

Available format(s): PDF
Category: Foundations
Publication info: Preprint.
Keywords: Quantum Cryptography Copy-Protection Random Oracle Model
Contact author(s): prabhanjan @ cs ucsb edu
kaleoglu @ ucsb edu
History: 2022-08-29: approved; 2022-08-26: received; See all versions
Short URL: https://ia.cr/2022/1109
License: CC BY

BibTeX

@misc{cryptoeprint:2022/1109,
      author = {Prabhanjan Ananth and Fatih Kaleoglu},
      title = {A Note on Copy-Protection from Random Oracles},
      howpublished = {Cryptology {ePrint} Archive, Paper 2022/1109},
      year = {2022},
      url = {https://eprint.iacr.org/2022/1109}
}