Chaotic phase noise-like encryption based on geometric shaping for coherent data center interconnections

Abstract

The network traffic of data centers (DCs) has increased unprecedentedly with the rapid development of digital economy. However, the data transmission faces security threats in the distributed optical interconnection and intensive interaction of DC networks. In this paper, we propose a chaotic phase noise-like encryption algorithm using geometric shaping (GS) for coherent DC interconnections (DCIs). A GS constellation is used to improve transmission performance, and it is combined with coherent equalization algorithms to improve security performance. Then, a chaotic encryption is designed based on phase noise-like transformation (PNLT). The data are effectively scrambled, and the confusion level of phase can be increased. Finally, 216 Gb/s 8-quadrature amplitude modulation (8-QAM) encrypted data are successfully verified on a 240 km transmission link of DCIs. The results show that this scheme can achieve a bit error rate (BER) performance gain of 1.1 dB and provide a highly compatible solution for realizing security enhanced DCIs.

Frequency-domain image encryption based on IWT and 3D S-box

“…As one of the most intuitive and common data types in information dissemination, images contain a large amount of private information [4][5][6]. Therefore, considering encryption of images can effectively prevent the leakage of important information during transmission [7][8][9]. Digital images are characterized by high data redundancy, high correlation, and large amount of data, which makes a large number of pseudo-random numbers are needed as key streams in the process of encrypting images, and this promotes the research of pseudo-random numbers [10][11][12].…”

Physical Layer Encryption for CO-OFDM Systems Enabled by Camera Projection Scrambler

“…Various physical layer encryption methods, such as quantum key distribution (QKD) [7], optical steganography [8], optical code division multiple access (OCDMA) [9], hardware chaos encryption [10][11][12][13], and digital chaos encryption [14][15][16][17][18][19][20][21][22][23][24], etc., have all made significant contributions to securing data. Zhang et al used an implementation of high-speed QKD in an SiP QKD encoder using a pass-block architecture and a dedicated SiP decoder based on the polarization-based decoy state Bennett-Brassard 1984 protocol [7].…”