Skip Ratchet: A Hierarchical Hash System

ePrint Report: Skip Ratchet: A Hierarchical Hash System

Brooklyn Zelenka

Hash chains are a simple way to generate pseudorandom data, but are inefficient in situations that require long chains. This can cause unnecessary overhead for use cases including logical clocks, synchronizing the heads of a pseudorandom stream, or non-interactive key agreement. This paper presents the “skip ratchet”, a novel pseudorandom function that can be efficiently incremented by arbitrary intervals.

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