Security of Y-00 and similar quantum cryptographic protocols

H. P. Yuen, P. Kumar, E. Corndorf, R. Nair

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


It is claimed in Phys. Lett. A by T. Nishioka et. al. 327 (2004) 28-32, that the security of Y-00 is equivalent to that of a classical stream cipher. In this paper it is shown that the claim is false in either the use of Y-00 for direct encryption or key generation, in all the parameter ranges it is supposed to operate including those of the experiments reported thus far. The security of Y-00 type protocols is clarified.
Original languageEnglish
Pages (from-to)1-6
JournalPhysics Letters A
StatePublished - 2005


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