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A quorum-slice can convince a single node of an agreement, while a quorum convinces the entire match system. If a knot finds some fully trustworthy quorum-slice, it may agree to go with what the quorum slice has agreed. Understanding the consensual algorithm of the Byzantine Federal Agreement (FBA) requires the understanding of its predecessor, the traditional Byzantine agreement. The Byzantine arrangement ensures consensus, even if you have some reprehensible members in your network. There are two advantages. First, it can be consensual and effective. Second, trust is totally decoupled from the possession of resources. This means that a small supplier has as much power as a large, wealthy organization that helps keep both honest. On the other hand, all parties must agree on the exact list of participants. In general, adherence to Byzantine contract systems is determined by a central authority or concluded negotiations. In addition, the system-wide agreement is reached when overlapping quorums communicate transactions. To continue with the example of tree planting after you and your neighbors have agreed to plant the tree in your yard, take it to your local city council, which in turn legitimizes the action for the rest of the city.

In practice, traditional Byzantine non-federal agreements require that each node be involved in each transaction to achieve a quorum. This is comparable to the fact that any mayor of the state can know that you are about to plant a tree in your yard and get most of them to approve it. It is not necessary and it is a waste of time and resources for all. In BRAVO`s FBA system, each node can decide who to trust and be part of its decision group that we call the quorum slice. According to the previous example, you only need to inform your neighbours (your quorum-slice) that you want to plant a tree in your yard and get them to accept it. Formally, we can define a federal Byzantine arrangement system (FBAS) that compromises a pair of that compromise a series of V nodes and an A-quorum quorum, is the number of knots needed to reach an agreement within a system. Instead, FBAs use “quorum slices.” A quorum-slice is a subset of a quorum that can convince another particular knot to accept. FBAS is designed so that the protocol can always find consensus, even if the nodes join or leave. A problem of arbitrary nodes that adhere to the protocol would occur if the protocol is based by a majority, because an attacker could then use many nodes to influence consensus.

To avoid this problem while allowing the “combined lane,” FBAS uses quorum slices.

Posted on December 8th, 2020 | filed under Uncategorized |

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