A two layer chaotic encryption scheme of secure image transmission for DCT precoded OFDM-VLC transmission

Wang, Zhongpeng; Chen, Fangni; Qiu, Weiwei; Chen, Shoufa; Ren, Dongxiao

doi:10.1016/j.optcom.2017.09.095

Cited by 28 publications

(19 citation statements)

References 24 publications

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“…In addition, the comparative analysis of the BER, PAPR and CPAs resistance among other schemes and ours are given in Table 2. The schemes such as the WHT [9], DFT [13] and DCT [14] based on chaotic precoding can achieve the PAPR reduction for improving the system performance, while the CPAs resistance are not involved. Our scheme and the CPR in [16] can achieve the good capacity of CPAs resistance without improving PAPR.…”

Section: Results Analysis and Further Discussionmentioning

confidence: 99%

“…However, all the above schemes [4]- [7] need additional bandwidth to transmit the optimal phase factor, which increases the system complexity and reduces the realtime processing capability of system. As an improvement, the low computational complexity schemes were proposed for secure transmission in OFDM-PON, such as chaotic coding IQ encryption [8], chaotic Walsh-Hadamard Transform [9], chaotic constellation transformation and pilot-aided [10], hybrid chaotic confusion and diffusion (HCCD) [11], chaotic completely frequency/time permutation [12], chaotic modified-DFT (discrete Fourier transform) [13], discrete cosine transform (DCT) [14], etc. In these schemes, transmission security was originated from the chaotic IQ encryption, processed matrix or frequency/time permutations, which can achieve better security and large key space simultaneously.…”

Section: Introductionmentioning

confidence: 99%

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Cellular Neural Network Encryption Scheme for Time Synchronization and CPAs Resistance in OFDM-PON

Zhuo

et al. 2019

IEEE Access

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In this paper, we first experimentally demonstrate a novel cellular neural network (CNN)-based physical layer encryption scheme to achieve the capability of chosen-plaintext attacks (CPAs) resistance and time synchronization simultaneously in orthogonal frequency division multiplexing passive optical network (OFDM-PON). By utilizing the hyperchaotic phenomena within a certain parameter range characteristics of CNN, a four-dimensional (4-D) CNN-based system is constructed to strengthen the security of data transmission. And, according to CNN, the chaotic Feistel transform is executed after extracting the indexes of QAM data, in which completely dynamic encrypted data can be achieved for the CPAs resistance. Moreover, a chaotic training sequence generated by CNN used as timing sequence is added to the transmitted OFDM signals to obtain time synchronization and further increasing the confidentiality of the encryption system. A verified experimental system with 10-Gb/s 16-QAM encrypted OFDM signals through 20-km single-mode fiber (SMF) transmission is conducted. And, the results show that the Feistel and CNN-based physical-layer encryption scheme can generate completely dynamic ciphertexts for the CPAs resistance and accurately realize the time synchronization, and without apparent receiver sensitivity deterioration (∼0.3dB) is introduced in comparison with other against CPAs schemes. INDEX TERMS Cellular neural network (CNN) encryption, orthogonal frequency division multiplexing (OFDM), passive optical network (PON), dynamic ciphertexts.

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Section: Results Analysis and Further Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Cellular Neural Network Encryption Scheme for Time Synchronization and CPAs Resistance in OFDM-PON

Zhuo

et al. 2019

IEEE Access

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“…Al-Moliki et al [27]- [32] proposed to generate secret keys from the real-valued bipolar samples of the optical OFDM scheme for encrypting the signal upon transmission. Wang et al [33], [35], [37] proposed chaotic encryption methods for encrypting the images input type. Yang et al [34] proposed a chaotic encryption method to secure non-orthogonal multiple access (NOMA)-based VLC systems.…”

Section: Introductionmentioning

confidence: 99%

Improving Availability and Confidentiality via Hyperchaotic Baseband Frequency Hopping Based on Optical OFDM in VLC Networks

2020

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The security in visible-light communication (VLC) networks has recently gained attention. This work presents a hyperchaotic baseband frequency hopping method based on optical orthogonal frequency-division multiplexing (Hyperchaos-BB-FH-OOFDM) that can enhance both confidentiality and availability in VLC networks. A four-dimensional hyperchaotic scheme is employed for chaotic mapping. The proposed method exploits the random feature of the input data and chaotic codes to improve the confidentiality against correlation and statistical attacks and to improve the availability against illumination, disguised, and noise jamming. Using the chaotic scheme, the bipolar real OFDM samples are exploited to create dynamic cypher keys and spreading codes that are updated at each frame throughout the entire session, leading to high security against malicious attacks. The proposed method employs a four-fold encryption approach that involves chaotic frequency/time-domain scrambling of OFDM subcarriers, chaotic phase scrambling of frequency-domain subcarriers, and chaotic spreading of the OFDM signals upon transmission. According to the results, in addition to enhancing the confidentiality and availability, the method supports multiplexing, reduces the peak-to-average-power ratio of the OFDM signal, and improves the bit error rate performance for OFDM-based VLC networks.

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“…Therefore, the channel equalization is simplified so that they are considered as the advantages of OFDM. OFDM presents low symbol rate, which makes a guard interval between symbols, and also it has the capability to eliminate Inter-Symbol Interference (ISI), echoes, and time-spreading [7][8][9]. This work is divided into two parts, The objective of the first part is performing steganography approach, which achieves high security and high capacity with keeping the quality of steganography image.…”

Section: Introductionmentioning

confidence: 99%

An Efficient Image Steganography Approach over Wireless Communication System

Eyssa

Abd-El-Samie

Abdelnaiem

2019

Wireless Pers Commun

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This paper presents a robust color image steganography approach for image communication over wireless communication systems. The objective of this approach is to hide three color images in one color cover image to increase the capacity of hiding as most previously published steganography approaches suffer from a capacity problem. Moreover, the investigation of wireless communication of steganography images is presented in this paper to study the sensitivity of extraction of hidden images to the channel degradation effects, which is not studied appropriately in the literature. The proposed approach depends on the Discrete Cosine and Discrete Wavelet transform. The cover image is first transformed to luminance and chrominance components for embedding the images to be hidden. The secret images are encrypted by chaotic Baker map, which is a good representative of the family of permutation-based algorithms, which tolerate the channel degradations better. The investigated wireless communication system is the Orthogonal Frequency Division Multiplexing system with channel equalization. The simulation results reveal the success of the proposed work for robust image communication.

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A two layer chaotic encryption scheme of secure image transmission for DCT precoded OFDM-VLC transmission

Cited by 28 publications

References 24 publications

Cellular Neural Network Encryption Scheme for Time Synchronization and CPAs Resistance in OFDM-PON

Cellular Neural Network Encryption Scheme for Time Synchronization and CPAs Resistance in OFDM-PON

Improving Availability and Confidentiality via Hyperchaotic Baseband Frequency Hopping Based on Optical OFDM in VLC Networks

An Efficient Image Steganography Approach over Wireless Communication System

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