Cheat Sensitive Quantum Bit Commitment

Details Cheat Sensitive Quantum Bit Commitment Cheat Sensitive Quantum Bit Commitment

1999-11-09

arxiv.org/abs/quant-ph/9911043v5

Phys. Rev. Lett. 92, 157901 (2004).

Physics

Quantum Physics

Final version: a slightly shortened version of this will appear in PRL. Minor corrections from last version

Scientific paper

10.1103/PhysRevLett.92.157901

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.

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