Journal of Lightwave Technology

Secure OCDM Transmission Using a Planar Multiport Encoder/Decoder

Gabriella Cincotti, Gianluca Manzacca, Valentina Sacchieri, Xu Wang, Naoya Wada, Ken‐ichi Kitayama

Published Jul 1, 2008• 7 citations

Abstract

We present different optical secure point-to-point transmission schemes using a planar multiport encoder/decoder. We consider both bit- and block-cipher cryptography: in the first case, each bit (both mark and space) from each user is encoded in a two-key optical code-division multiplexing signal. Block-cipher cryptography encodes a stream ofnbits into a single code and corresponds to opticalM-ary transmission. We demonstrate that block-ciphers are more secure with respect to bit-ciphers schemes and also against known-plaintext and chosen-plaintext attacks.

DOI: 10.1109/jlt.2007.912025

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