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In a recent paper titled “Comment on: ‘How much security does the Y-00 protocol provide us?’ ” [H.P. Yuen, P. Kumar, E. Corndorf, Phys. Lett. A 346 (2005) 1–6], the authors critically examine our idea [T. Nishioka, T. Hasegawa, H. Ishizuka, K. Imafuku, H. Imai, Phys. Lett. A 327 (2004) 28–32] that the Y-00 protocol is essentially as secure as classical stream ciphers. We clarify our idea in more detail...
New quantum cryptography, often called Y-00 protocol, has much higher performance than the conventional quantum cryptographies. It seems that the conventional quantum cryptographic attacks are inefficient at Y-00 protocol as its security is based on the different grounds from that of the conventional ones. We have, then, tried to cryptoanalyze Y-00 protocol in the view of cryptographic communication...
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