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Science China Information Sciences

Quantum secure circuit evaluation

CHENHuanhuan, Li-bin, ZHUANGZhenquan

Published Jan 1, 2004• 0 citations
OpenAlex

Abstract

In order to solve the problem of classical secure circuit evaluation, this paper proposes a quantum approach. In this approach, the method of inserting redundant entangled particles and quantum signature has been employed to strengthen the security of the system. Theoretical analysis shows that our solution is secure against classical and quantum attacks.

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In order to solve the problem of classical secure circuit evaluation, this paper proposes a quantum approach. In this approach, the method of inserting redundant entangled particles and quantum signature has been employed to strengthen the security of the system. Theoretical analysis shows that our solution is secure against classical and quantum attacks.
This paper presents a novel approach to quantum-inspired cryptography leveraging the complexities of entangled quantum states. Current quantum-inspired schemes often utilize simplified models, which lack the inherent security guarantees provided by genuine quantum phenomena. This research proposes a cryptographic protocol fundamentally rooted in the analysis and manipulation of entanglement. The core mechanism involves developing sophisticated techniques for measuring and controlling entangled states to generate key exchange and encryption/decryption processes. We demonstrate that this approach, utilizing the full potential of quantum mechanics, results in a significantly more robust and secure system compared to existing quantum-inspired methods. The protocol incorporates novel methods for key distribution based on the probabilistic nature of entanglement measurements and employs a multi-level security approach to mitigate potential vulnerabilities. The analysis presented focuses on the mathematical underpinnings of the protocol, detailing the operations performed on entangled states and the resultant security properties. We provide a comprehensive theoretical framework for evaluating the security of the proposed system, exploring potential attacks and demonstrating the protocol's resilience. The key contributions of this work include the formalization of the entanglement-based key exchange process and the development of a security model specifically tailored to the unique characteristics of entangled quantum states.
Purpose of the article: development of new methods, algorithms and models to detect unauthorized actions of an intruder/s in relation to broadcast data represented in the form of one-photon pure states of light particles, which will allow: to strengthen the secrecy of basic security keys, improve procedures for data exchange and processing by legitimate users of the telecommunications system, expand the functionality of existing technological solutions in their classic representation. Research method: system analysis, information security assessment method. The result: risks of critical system errors for procedures of basic states measurement results matching and supposed potential possibilities of attacker to realize vulnerabilities through active phase of attacks with explicit critical outcome are presented. It is established that translation of mixed single-photon states and imposition on receiving hardware is explicitly uncontrolled, unaccountable and not contained in any algorithm of quantum protocols, which, according to the authors, is the most critical vulnerability of modern cryptographic systems based on quantum mechanics. A way to solve problems of “silent” scanning and to counteract hidden active attacks on quantum channel and particle states is proposed. The essence of the solution consists in non-orthogonality of states of a random basis vector and duplication of a main communication channel containing an information path on pulse signals broadcasting, where a known number of synchro-sentences in a backup line allows to trace an attacker. Fundamental is the knowledge of the primary-natural errors occurring at each of the stages of the formation of the main security key.
Abstract As a cutting-edge quantum communication technology, quantum key distribution(QKD) is based on the basic principles of quantum mechanics, which guarantees its unconditional security in theory. Any attempt to eavesdrop will leave traces. However, in practical applications, there are also security issues such as attackers disguising themselves as legitimate users to establish contact with both parties in communication, intercepting quantum key distribution information, or possibly obtaining keys by eavesdropping or tampering with information in classical channels. In order to solve the above problems, this paper proposes a solution of introducing Chaum-Pedersen zero-knowledge proof and Gottesman-Chuang quantum signature in QKD. Before key distribution, the Chaum-Pedersen zero-knowledge proof is used to effectively verify the identities of both parties in communication, solve the problem of disguising as legitimate communication parties, and improve the security and credibility of communication. The Gottesman-Chuang quantum signature provides an unforgeable signature for messages or data in QKD, effectively preventing information from being tampered with or forged during transmission, and further strengthening the security of communication. This paper proves through simulation experiments of BB84 and E91 protocols that the security of enhanced QKD has been significantly improved by adding zero-knowledge proof and quantum signature. The key generation rate of enhanced BB84 has increased by 29.68\%, and that of enhanced E91 has increased by 28.26\%. The overall security performance has been significantly improved. Our solution has high superiority and feasibility.