Computer Science – Cryptography and Security
Scientific paper
2011-01-29
Computer Science
Cryptography and Security
5 pages
Scientific paper
Recently, Choi \emph{et al}. proposed an assumption on Mayers-Lo-Chau (MLC) no-go theorem that the state of the entire quantum system is invariable to both participants before the unveiling phase. This means that the theorem is only applicable to static quantum bit commitment (QBC). This paper find that the assumption is unnecessary and the MLC no-go theorem can be applied to not only static QBC, but also non-static one. A non-static QBC protocol proposed by Choi \emph{et al.} is briefly reviewed and analyzed to work as a supporting example. In addition, a novel way to prove the impossibility of the two kinds of QBC is given.
Chan Hilton W.
Li Chengqing
Li Qin
Long Dong-Yang
Wu Chun-Hui
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