Improving the security of secure deterministic communication scheme based on quantum remote state preparation  

作　　者：秦素娟 温巧燕 

机构地区：[1]State Key Laboratory for Networking and Switching Technology,Beijing University of Posts and Telecommunicationy

出　　处：《Chinese Physics B》2010年第2期73-76,共4页中国物理B（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant Nos. 60873191 and 60821001);the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 200800131016);the Foundation for Key Program of Ministry of Education of China (Grant No. 109014);the Beijing Nova Program, China (Grant No. 2008B51);the China Post-Doctoral Science Foundation (Grant No. 20090450018);the Natural Science Foundation of Beijing, China (Grant No. 4072020)

摘　　要：The security of the quantum secure deterministic communication scheme [Chin. Phys.16 （2007） 2549] is reexamined. A security loophole is pointed out. Taking advantage of this loophole, an eavesdropper can steal all the secret messages without being detected by an intercept-and-resend attack strategy. Furthermore, a possible improvement on this protocol is presented. It makes the modified protocol secure against this kind of attack.The security of the quantum secure deterministic communication scheme [Chin. Phys.16 （2007） 2549] is reexamined. A security loophole is pointed out. Taking advantage of this loophole, an eavesdropper can steal all the secret messages without being detected by an intercept-and-resend attack strategy. Furthermore, a possible improvement on this protocol is presented. It makes the modified protocol secure against this kind of attack.

关 键 词：quantum secure direct communication CRYPTANALYSIS quantum cryptography SECURITY 

分 类 号：O413.1[理学—理论物理] TN918.1[理学—物理]