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Masking of 4096-level Intensity Modulation Signals by Noises for Secure Communication Employing Y-00 Cipher Protocol

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Abstract

Error-free operation of physical stream cipher based on Y-00 protocol using 4096-level intensity modulation signals is demonstrated with the masking effect on the secret key. The intensity noise successfully masks 255-signal levels against direct-detection attack.

© 2011 Optical Society of America

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