International Association for Cryptologic Research

International Association
for Cryptologic Research


Paper: Franchised Quantum Money

Bhaskar Roberts , UC Berkeley
Mark Zhandry , Princeton University
DOI: 10.1007/978-3-030-92062-3_19
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Presentation: Slides
Conference: ASIACRYPT 2021
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.
Video from ASIACRYPT 2021
  title={Franchised Quantum Money},
  author={Bhaskar Roberts and Mark Zhandry},