Optimization and Implementation of Efficient and Universal Quantum Key Distribution

Da-Jun Huang,Jin Zhong,Hao Wu,Dong Jiang,Wen-Zhe Zhong

doi:10.1155/2020/3418780

Abstract

Since quantum key distribution (QKD) can provide proven unconditional security guaranteed by the fundamental laws of quantum mechanics, it has attracted increasing attention over the past three decades. Its low bit rate, however, cannot meet the requirements of modern applications. To solve this problem, recently, an efficient and universal QKD protocol based on chaotic cryptography and middleware technology was proposed, which efficiently increases the bit rate of the underlying QKD system. Nevertheless, we find that this protocol does not take the bit errors into account, and one error bit may lead to the failure of the protocol. In this paper, we give an optimized protocol and deploy it on a BB84 QKD platform. The experimental results show that the optimized version provides resistance to bit errors compared with the original version. And the statistical properties of the generated bits are fully assessed using different methods. The evaluation results prove that the proposed protocol can generate bits with outstanding properties.

Highlights

Quantum key distribution (QKD), invented by Bennett and Brassard in 1984 [1], is a technology for sharing keys between two legitimate users, Alice and Bob
Since the quantum mechanics laws guarantee that the keys are perfectly secret from the eavesdropper, Eve [2], it has attracted widespread attention, and many advanced works have been proposed over recent years [3, 4]
Jiang et al proposed an efficient and universal quantum key distribution (EUQKD) protocol [9] based on chaotic cryptography and middleware techniques

Summary

Introduction

Quantum key distribution (QKD), invented by Bennett and Brassard in 1984 [1], is a technology for sharing keys between two legitimate users, Alice and Bob. These protocols are neither efficient enough to fit the modern applications nor compatible with different QKD protocols or optical platforms To solve these problems, recently, Jiang et al proposed an efficient and universal quantum key distribution (EUQKD) protocol [9] based on chaotic cryptography and middleware techniques. If Alice and Bob use a set of bits to update their input-sensitive middleware, even though there is only one error bit in these bits, the Journal of Electrical and Computer Engineering execution results will be completely different, resulting in the failure of the communication To solve this problem, in this paper, we optimize EUQKD protocol and provide it with the ability to resist bit errors by checking part of the execution results.

Review of EUQKD

Optimization and Realization of EUQKD

Statistical Evaluation

Image Encryption and Decryption

Conclusion