Title :
Improved asymptotic key rate of the B92 protocol
Author_Institution :
Dept. of Commun. & Integrated Syst, Tokyo Inst. of Technol., Tokyo, Japan
Abstract :
We analyze the asymptotic key rate of the single photon B92 protocol by using Renner´s security analysis given in 2005. The new analysis shows that the B92 protocol can securely generate key at 6.5% depolarizing rate, while the previous analyses cannot guarantee the secure key generation at 4.2% depolarizing rate.
Keywords :
cryptographic protocols; quantum cryptography; Renner security analysis; asymptotic key rate; depolarizing rate; single photon B92 protocol; Channel estimation; Convex functions; Entropy; Minimization; Protocols; Security;
Conference_Titel :
Information Theory Proceedings (ISIT), 2013 IEEE International Symposium on
Conference_Location :
Istanbul
DOI :
10.1109/ISIT.2013.6620246
