Composability of biased quantum coin flipping
Satoshi Ishizaka, Alexander I. Lvovsky · AIP conference proceedings · 2009
A biased quantum coin flip (QCF) does not realize the functionality of a classical black‐boxed coin flip, if it satisfies some fidelity condition. We consider a quantum black‐boxed coin flip and show that the fidelity condition is well‐explained as the functionality of the quantum black‐boxed coin flip. Moreover, we show the results of the security analysis for a QCF like protocol.