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Symmetric Blind Information Reconciliation and Hash-function-based Verification for Quantum Key Distribution


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Abstract

We consider an information reconciliation protocol for quantum key distribution (QKD). In order to correct down the error rate, we suggest a method, which is based on symmetric blind information reconciliation for the low-density parity-check (LDPC) codes. We develop a subsequent verification protocol with the use of ϵ-universal hash functions, which allows verifying the identity between the keys with a certain probability.

About the authors

A. K. Fedorov

Russian Quantum Center, Business-center “Ural”

Author for correspondence.
Email: akf@rqc.ru
Russian Federation, ul. Novaya 100A, Skolkovo, Moscow, 143025

E. O. Kiktenko

Russian Quantum Center, Business-center “Ural”; Steklov Mathematical Institute of Russian Academy of Sciences; Geoelectromagnetic Research Centre, Schmidt Institute of Physics of the Earth; Bauman Moscow State Technical University

Email: akf@rqc.ru
Russian Federation, ul. Novaya 100A, Skolkovo, Moscow, 143025; ul. Gubkina 8, Moscow, 119991; Troitsk, Moscow, 142190; 2-ya Baumanskaya ul. 5, str. 1, Moscow, 105005

A. S. Trushechkin

Russian Quantum Center, Business-center “Ural”; Steklov Mathematical Institute of Russian Academy of Sciences; National Research Nuclear University MEPhI; National University of Science and Technology MISiS

Email: akf@rqc.ru
Russian Federation, ul. Novaya 100A, Skolkovo, Moscow, 143025; ul. Gubkina 8, Moscow, 119991; Kashirskoe sh. 31, Moscow, 115409; Leninskii pr. 6, Moscow, 119049

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