Theory Seminar: Coin Flipping of Any Constant Bias Implies One-Way Functions

Itay Berman (Tel-Aviv university)
Wednesday, 26.3.2014, 12:30
Taub 201

We show that the existence of a coin-flipping protocol safe against any non-trivial constant bias (e.g., .499), implies the existence of one way functions. This improves upon a recent result of Haitner and Omri [FOCS’11], who proved this implication for protocols with bias .207. Unlike the result of Haitner and Omri, our result holds also for weak coin-flipping protocols.

Joint work with Iftach Haitner and Aris Tentes.

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