Ripple update: What if some of the overlapping nodes are faulty?
Ripple whitepaper says that “The intersection of two UNLs may include faulty nodes, but so long as the size of the intersection is larger than the bound required to guarantee agreement,”. How?
Suppose there are three sets of nodesA = 79 nodesB = 21 nodesC = 79 nodes
Let’s assume that A and B form a UNL set of 100.B and C form another UNL set of 100.Further, let’s assume that 19 nodes in set B are malicious.Such a network satisfies > 20% overlap and > 80% good nodes in each set.
Now, 62 nodes in set A and 19 nodes in set B can agree on one set of transactions while 62 nodes in set C and 19 nodes in set B can agree on a different set of transactions. The two good overlapping nodes know this but will not be able to prevent a split in the network, right? Or am I missing something?
Even if 2 nodes in set B are malicious, they can cause such a split.P.S. pardon my ignorance here if this is something very obvious, I am just learning these concepts.
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Author: chaapu
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