A virtual protocol based on universal source compression enables asymptotically tight finite-size security proofs for permutation-symmetrizable QKD by reducing the problem to conditional Rényi entropy estimation.
Alice performs the hash function ˆH randomly chosen from the dual 2-universal family of surjective linear hash functions and obtains the final key
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Asymptotically tight security analysis of quantum key distribution based on universal source compression
A virtual protocol based on universal source compression enables asymptotically tight finite-size security proofs for permutation-symmetrizable QKD by reducing the problem to conditional Rényi entropy estimation.