Two-party Models and the No-go Theorems

Details Two-party Models and the No-go Theorems Two-party Models and the No-go Theorems

2006-08-22

arxiv.org/abs/quant-ph/0608165v3

Physics

Quantum Physics

9 pages, 8 figures. Due to attacks received from reviewers, an important case-study on "coin-flipping-based protocols" is remo

Scientific paper

In this paper, we reconsider the communication model used in the no-go theorems on the impossibility of quantum bit commitment and oblivious transfer. We state that a macroscopic classical channel may not be replaced with a quantum channel which is used in the reduced model proving the no-go theorems. We show that in some restricted cases, the reduced model is insecure while the original model with a classical channel is secure.

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