Quantum homomorphic broadcast multi-signature based on homomorphic aggregation  

作　　者：徐鑫 殷爱菡 Xin Xu;Ai-Han Yin(Department of Information Engineering,East China JiaoTong University,Nanchang 330013,China)

机构地区：[1]Department of Information Engineering,East China JiaoTong University,Nanchang 330013,China

出　　处：《Chinese Physics B》2023年第7期254-261,共8页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant No.61762039).

摘　　要：Quantum multi-signature has attracted extensive attention since it was put forward.Beside its own improvement,related research is often combined with other quantum signature.However,this type of quantum signature has one thing in common,that is,the generation and verification of signature depend heavily on the shared classical secret key.In order to increase the reliability of signature,the homomorphic aggregation technique is applied to quantum multi-signature,and then we propose a quantum homomorphic multi-signature protocol.Unlike previous quantum multi-signature protocols,this protocol utilizes homomorphic properties to complete signature generation and verification.In the signature generation phase,entanglement swapping is introduced,so that the individual signatures of multiple users are aggregated into a new multi-signature.The original quantum state is signed by the shared secret key to realize the verification of the signature in the verification phase.The signature process satisfies the homomorphic property,which can improve the reliability of the signature.

关 键 词：quantum signature homomorphic aggregation homomorphic multi-signature Bell state 

分 类 号：O413[理学—理论物理] TN918.91[理学—物理]