Open AccessDeterministic Quantum Secure Direct Communication and Authentication Protocol Based on W‐Class State
Author(s) -
Li Leilei,
Zhang Yu,
Wen Shuang,
Li Na,
Yang Jiayu,
Li Jian
Publication year - 2018
Publication title -
chinese journal of electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.267
H-Index - 25
eISSN - 2075-5597
pISSN - 1022-4653
DOI - 10.1049/cje.2017.10.006
Subject(s) - computer science , authentication protocol , protocol (science) , class (philosophy) , state (computer science) , authentication (law) , quantum , computer network , theoretical computer science , computer security , algorithm , physics , quantum mechanics , artificial intelligence , medicine , alternative medicine , pathology
A Quantum secure direct communication (QSDC) and authentication protocol based on the W‐class state is presented to enhance the efficiency of eavesdropping detection. In this protocol, the W‐class state is used to transmission the checking sequence and detect eavesdroppers. In the security analysis, the method of entropy theory is introduced, and two detection strategies are compared quantitatively by using the constraint between the information that eavesdroppers can obtain and a normalized difference parameter is introduced. To obtain the same amount of information, the eavesdropper must face a higher detection probability in the proposed protocol than in the comparison. The security of the proposed protocol is also discussed. The analysis results indicate that the proposed protocol is more secure, but it must send more particles.