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 of n bits into a single code and corresponds to optical M-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.
Original language | English |
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Pages (from-to) | 1798-1806 |
Number of pages | 9 |
Journal | Journal of Lightwave Technology |
Volume | 26 |
Issue number | 13-16 |
DOIs | |
Publication status | Published - 2008 |
Keywords
- Communication system security
- Cryptography
- Decoding
- Decryption
- Encoding
- Encryption
- Optical code-division multiplexing (OCDM)
- Optical communications
- Passive optical networks (PONs)