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A finite map data structure that addresses stored values using a function that maps many values to few addresses.
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Generate collision resistant identifiers with two-way hashing
Objective: We want to generate a unique and reproducible identifier for a given slice of bytes and avoid collisions.
High-level idea: Compute $$fK := hash(k_1)\; and\; sK := hash(k_1^{-1})\; where\; …