Cheat Sensitive Quantum Bit Commitment
Quantum Physics
2009-10-31 v5 Cryptography and Security
Abstract
We define cheat sensitive cryptographic protocols between mistrustful parties as protocols which guarantee that, if either cheats, the other has some nonzero probability of detecting the cheating. We give an example of an unconditionally secure cheat sensitive non-relativistic bit commitment protocol which uses quantum information to implement a task which is classically impossible; we also describe a simple relativistic protocol.
Cite
@article{arxiv.quant-ph/9911043,
title = {Cheat Sensitive Quantum Bit Commitment},
author = {Lucien Hardy and Adrian Kent},
journal= {arXiv preprint arXiv:quant-ph/9911043},
year = {2009}
}
Comments
Final version: a slightly shortened version of this will appear in PRL. Minor corrections from last version