Robust Design for Reconfigurable Coder/Decoders to Protect Against Eavesdropping in Spectral Amplitude Coding Optical CDMA Networks

Chang, Yao-Tang; Sue, Chuan-Ching; Huang, Jen-Fa

doi:10.1109/jlt.2007.901333

Cited by 31 publications

(15 citation statements)

References 23 publications

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“…As shown, the reconfiguration scheme differs from that presented in Ref. 25 via the addition of the adaptive OXC device to implement the modified code-word assignments. Moreover, the proposed scheme significantly increases the cardinality of modified TS/WGH embedded M-sequence code than previous author's work presented in Refs.…”

Section: Adaptive Code-word Changing Mechanismmentioning

confidence: 97%

“…25 Meanwhile, in Ref. 1, Shake showed that the confidentiality of OCDMA systems could be enhanced by changing the user code words periodically in accordance with the anticipativewarning time (i.e., the expected time for which an eavesdropper must wait between isolations for a particular user).…”

Section: Adaptive Code-word Changing Mechanismmentioning

confidence: 99%

“…Furthermore, an additional optical cross-connect (OXC) devices [22][23][24] is integrated with a code-word-changing algorithm (i.e., hereafter referred to as adaptive OXC device), which automatically triggers a change in the user code word in response to a suspected eavesdropping attack. In current study, compared to conventional TDM, WDM, 1-D spectral amplitude coding (SAC) -OCDMA 25 and various 2-D time-spreading/wavelength-hopping schemes, 17,21,[26][27][28] the scheme proposed in this study improves the synchronous networks' confidentiality by increasing the user cardinality and changing the user code word on a sufficiently frequent (timely) basis.…”

Section: Introductionmentioning

confidence: 99%

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Adaptive modified time-spreading and wavelength-group-hopping embedded M-sequence code for improved confidentiality over synchronous networks

Huang

2011

Opt. Eng

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An adaptive modified two-dimensional time-spreading/ wavelength-group-hopping embedded M-sequence code (TS/WGH embedded M-sequence code) is proposed for enhancing the cardinality, confidentiality, and bit error rate (BER) of synchronous networks. The proposed arrayed-waveguide-grating (AWG)-based modified TS/WGH embedded M-sequence encoder/decoder (codecs) is constructed by using a fine AWG to generate an M-sequence code pattern and then using multiple-coarse AWGs to spread this pattern in the wavelength domain. The signals produced by the coarse AWGs are then spread in the time domain using optical delay lines. In addition, an algorithm based on an anticipative-warning-time mechanism and a degree of weighted load balance (DWLB) policy is proposed for changing the signature address code word of each user on a sufficiently frequent basis in order to thwart synchronous-network attacks by eavesdroppers. Overall, the simulation results show that, compared to conventional two-dimensional prime-hop code (PHC) and modified PHC and previous TS/group-hopping embedded M-sequence code, the proposed adaptive modified TS/WGH embedded M-sequence code proposed in this study yields an effective reduction in the multiple-access interference and BER while simultaneously improving the degree of confidentiality. C 2011 Society of Photo-Optical Instrumentation Engineers (SPIE).

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Section: Adaptive Code-word Changing Mechanismmentioning

confidence: 97%

Section: Adaptive Code-word Changing Mechanismmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Adaptive modified time-spreading and wavelength-group-hopping embedded M-sequence code for improved confidentiality over synchronous networks

Huang

2011

Opt. Eng

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“…Corresponding to the weights distribution of (3), the periodic correlation between composite signature codes C u (i u .j u ) and C v (i v .j v ) can be derived [9], [10] to be…”

Section: Constructing Composite Signature Codesmentioning

confidence: 99%

Structuring Reconfigurable Composite Signature Codecs to Enhance OCDMA Network Confidentiality

Huang

Chen

et al. 2012

2012 Seventh International Conference on Broadband, Wireless Computing, Communication and Applications

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In views of reconfiguring optical code-division multiple-access (OCDMA) network coder/decoders (codecs), a dynamic signature coding scheme structured over arrayed-waveguide gratings (AWGs) is devised. Such scheme of signature reconfigurations can find applications on enhancing OCDMA network confidentiality. The code reconfiguration can be achieved by exclusively assigning to each network user a set of composite signatures made up of pseudo-orthogonal maximal-length sequence (M-sequence) codes and randomly selecting one among them to represent each user's signature. On the basis of cyclic and periodic characteristics of M-sequence codes compatible with those of the same dimension AWGs, numerical design examples are illustrated throughout the network codecs configuration and operation.

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“…Moreover, the current authors [4] proposed a dynamic reconfigurable coding-decoding scheme that involves using optical switches and simple electrical shift registers to change various maximal length sequence (Msequence) code patterns. However, the dynamic reconfigurable mechanism and change timing of authorized user's signature address codeword were not provided and demonstrated what the exactly secure key look like and when the change timing is occurred.…”

Section: Introductionmentioning

confidence: 99%

The scrambling cryptography implemented with chaotic sequence trigger optical switch algorithm in WDM passive optical network

Chang

Lin

2015

2015 International Carnahan Conference on Security Technology (ICCST)

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In order to overcome the impracticability of encrypting video sequence prior to compression as those done in most conventional schemes, a dynamic scrambling methodology configured with wavelength division multiple-passive optical network (WDM-PON) is proposed to implement a cross-layer video encryption scheme. Unlike the data encryption using traditional ciphers directly without compression consideration for format compliance, the proposed dynamic approach that changes in random the transmission timing of optical frames by using the chaotic sequence trigger optical switch generated logistic map. Hence, a partial encryption is implemented to apply in compression processing. The experimental results show that a series of randomness and aperiodicity is verified by using National Institute of Standards and Technology (NIST) testing suite. In addition, scrambling performance in terms of picture visual quality has verified the effectiveness of video encryption.

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Robust Design for Reconfigurable Coder/Decoders to Protect Against Eavesdropping in Spectral Amplitude Coding Optical CDMA Networks

Cited by 31 publications

References 23 publications

Adaptive modified time-spreading and wavelength-group-hopping embedded M-sequence code for improved confidentiality over synchronous networks

Adaptive modified time-spreading and wavelength-group-hopping embedded M-sequence code for improved confidentiality over synchronous networks

Structuring Reconfigurable Composite Signature Codecs to Enhance OCDMA Network Confidentiality

The scrambling cryptography implemented with chaotic sequence trigger optical switch algorithm in WDM passive optical network

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