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Is Quantum Bit Commitment Really Possible?

Hoi-Kwong Lo, H. F. Chau

quant-pharXiv:quant-ph/9603004

Abstract

We show that all proposed quantum bit commitment schemes are insecure because the sender, Alice, can almost always cheat successfully by using an Einstein-Podolsky-Rosen type of attack and delaying her measurement until she opens her commitment.

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