Practically secure quantum bit commitment based on quantum seals

Details Practically secure quantum bit commitment based on quantum seals Practically secure quantum bit commitment based on quantum seals

2008-04-22

arxiv.org/abs/0804.3531v1

Physics

Quantum Physics

6 pages, 1 figure

Scientific paper

The relationship between the quantum bit commitment (QBC) and quantum seal (QS) is studied. It is elaborated that QBC and QS are not equivalent, but QS protocols satisfying a stronger unconditional security requirement can lead to an unconditionally secure QBC. In this sense, QS is strictly stronger than QBC in security requirements. Based on an earlier proposal on sealing a single bit, a feasible QBC protocol is also put forward, which is secure in practice even if the cheater has a strong quantum computational power.

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