Unconditional Unclonable Encryption

Prabhanjan Ananth; Amit Sahai

Unconditional Unclonable Encryption

Quantum Physics 2026-07-23 v1 Cryptography and Security

Authors: Prabhanjan Ananth , Amit Sahai

Abstract

We give an unconditional construction of information-theoretically secure one-time private-key unclonable encryption scheme for one-bit messages, with efficient encryption and decryption and exponentially small unclonable-indistinguishability advantage.

Keywords

unclonable encryption information-theoretic security private-key encryption quantum cryptography one-time pad

Cite

@article{arxiv.2607.21551,
  title  = {Unconditional Unclonable Encryption},
  author = {Prabhanjan Ananth and Amit Sahai},
  journal= {arXiv preprint arXiv:2607.21551},
  year   = {2026}
}