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.
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)
