Franchised Quantum Money

Bhaskar Roberts; Mark Zhandry

Paper 2021/1410

Franchised Quantum Money

Bhaskar Roberts and Mark Zhandry

Abstract

The construction of public key quantum money based on standard cryptographic assumptions is a longstanding open question. Here we introduce franchised quantum money, an alternative form of quantum money that is easier to construct. Franchised quantum money retains the features of a useful quantum money scheme, namely unforgeability and local verification: anyone can verify banknotes without communicating with the bank. In franchised quantum money, every user gets a unique secret verification key, and the scheme is secure against counterfeiting and sabotage, a new security notion that appears in the franchised model. Finally, we construct franchised quantum money and prove security assuming one-way functions.

Metadata

Available format(s): PDF
Publication info: Published by the IACR in ASIACRYPT 2021
Keywords: Quantum
Contact author(s): bhaskarr @ eecs berkeley edu
History: 2021-10-24: received
Short URL: https://ia.cr/2021/1410
License: CC BY

BibTeX

@misc{cryptoeprint:2021/1410,
      author = {Bhaskar Roberts and Mark Zhandry},
      title = {Franchised Quantum Money},
      howpublished = {Cryptology {ePrint} Archive, Paper 2021/1410},
      year = {2021},
      url = {https://eprint.iacr.org/2021/1410}
}