抗共谋攻击的多方量子密钥协商协议  

Multiparty Quantum Key Agreement Protocol Against Collusion Attacks

作　　者：洪林建 王丽丽[1] 张晓东[1] HONG Linjian;WANG Lili;ZHANG Xiaodong(College of Computer and Cyber Security,Fujian Normal University,Fuzhou 350117,China)

机构地区：[1]福建师范大学计算机与网络空间安全学院,福建福州350117

出　　处：《福建师范大学学报（自然科学版）》2023年第2期41-48,共8页Journal of Fujian Normal University：Natural Science Edition

基　　金：国家自然科学基金资助项目(62171131)。

摘　　要：Wang等基于四量子比特对称W态提出/了多方量子密钥协商协议(MQKA2018W协议),通过分析和证明MQKA2018W协议的安全性,发现该协议无法抵抗参与者的共谋攻击,即2个不诚实的参与者可以通过共谋的方式窃取到其他诚实参与者的密钥信息.针对MQKA2018W协议中存在的这个安全性问题,可增加一个半可信的第三方服务器改进MQKA2018W协议,并提出一个能抵抗参与者共谋攻击的安全的多方量子密钥协商协议.综合分析表明,改进协议具有正确性、公平性和隐私性,且能安全抵抗内部攻击和外部攻击.Wang et al.proposed the multiparty quantum key agreement protocol(MQKA2018W protocol)based on the four-qubit symmetric W state.By analyzing and proving the security of MQKA2018W protocol,it has been found that the protocol cannot resist the collusion attack of participants,that is,two dishonest participants can obtain the key information of other honest participants through collusion.To solve this security problem in the MQKA2018W protocol,a semi-trusted third-party server can be added to improve the MQKA2018W protocol,and a secure multiparty quantum key agreement protocol that can resist collusion attacks of participants is proposed.Comprehensive analysis shows that the improved protocol has correctness,fairness and privacy and can safely resist internal and external attacks.

关 键 词：四量子比特对称W态 量子密钥协商 外部攻击 参与者攻击 共谋攻击 

分 类 号：TN918[电子电信—通信与信息系统] O413[电子电信—信息与通信工程]