Unconditionally Secure Bit Commitment

Details Unconditionally Secure Bit Commitment Unconditionally Secure Bit Commitment

1998-10-22

arxiv.org/abs/quant-ph/9810068v4

Phys.Rev.Lett. 83 (1999) 1447-1450

Physics

Quantum Physics

Typos corrected. Reference details added. To appear in Phys. Rev. Lett

Scientific paper

10.1103/PhysRevLett.83.1447

We describe a new classical bit commitment protocol based on cryptographic constraints imposed by special relativity. The protocol is unconditionally secure against classical or quantum attacks. It evades the no-go results of Mayers, Lo and Chau by requiring from Alice a sequence of communications, including a post-revelation verification, each of which is guaranteed to be independent of its predecessor.

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