title: Cheat sensitive quantum bit commitment.
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 describe an unconditionally secure cheat sensitive nonrelativistic bit commitment protocol which uses quantum information to implement a task which is classically impossible; we also describe a simple relativistic protocol.
authors.affiliation: The Perimeter Institute, 35 King Street North, Waterloo, Ontario, Canada N2J 2W9.
authors.forename: Lucien
authors.initials: L
authors.lastname: Hardy
authors.forename: Adrian
authors.initials: A
authors.lastname: Kent