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Fast Quantum Byzantine Agreement: Difference between revisions
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==Outline== | ==Outline== | ||
[[File:ByzantineAgreementFig.PNG|50px|frame|Schematic representation of an execution of a Byzantine Agreement protocol with | [[File:ByzantineAgreementFig.PNG|50px|frame|Schematic representation of an execution of a Byzantine Agreement protocol with | ||
Here we will sketch the outline of the protocol by Ben-Or [[Quantum Byzantine Agreement#References|(3)]] that solve Byzantine Agreement using quantum resources. A very nice summary of this protocol is also presented in [[Quantum Byzantine Agreement#References|(1)]]. | Here we will sketch the outline of the protocol by Ben-Or [[Quantum Byzantine Agreement#References|(3)]] that solve Byzantine Agreement using quantum resources. A very nice summary of this protocol is also presented in [[Quantum Byzantine Agreement#References|(1)]]. </br> | ||
The main idea of this protocol is for each player to classically send its proposed value/decision (a valid message) to every other player and then collaborate to determine what a majority of honest players proposed. In the case where adversaries make this difficult, a `good-enough' random coin is globally flipped (using quantum resources, explained below), which is then classically post-processed to reach agreement among the honest parties. More precisely, the protocol is outlined as follows. Each round consists of the following steps: | The main idea of this protocol is for each player to classically send its proposed value/decision (a valid message) to every other player and then collaborate to determine what a majority of honest players proposed. In the case where adversaries make this difficult, a `good-enough' random coin is globally flipped (using quantum resources, explained below), which is then classically post-processed to reach agreement among the honest parties. More precisely, the protocol is outlined as follows. Each round consists of the following steps: | ||