High-speed Privacy Amplification Scheme using GMP in Quantum Key Distribution

2019/10/10 by Bingze Yan, Haokun Mao, Yan, Bingze +5
Computer Science · Physics and Astronomy · #Chaos-based Image/Signal Encryption #Cryptography and Security (cs.CR) #FOS: Computer and information sciences #FOS: Physical sciences #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum Physics (quant-ph) #cs.CR #quant-ph

paper · pdf · doi:10.48550/arxiv.1910.04429

5 pages. 6 figures

openalex publication_date 2019/10/10 · openalex created_date 2019/10/18 · arxiv created 2019/12/26 · arxiv updated 2019/12/30 · openalex updated_date 2026/07/28

Abstract

Privacy amplification (PA) is the art of distilling a highly secret key from a partially secure string by public discussion. It is a vital procedure in quantum key distribution (QKD) to produce a theoretically unconditional secure key. The throughput of PA has become a bottleneck of the high-speed discrete variable QKD (DV-QKD) system. In this paper, a high-speed modular arithmetic hash PA scheme with GNU multiple precision (GMP) arithmetic library is presented. This scheme is implemented on two different central processing unit (CPU) platforms. The experimental results demon-strate that the throughput of this scheme achieves 260Mbps on the block size of 10⁶ and 140Mbps on the block size of 10⁸. This is the highest-speed recorded PA scheme on CPU platform to the author's knowledge.

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