Hyperchaotic Modulo Operator Encryption Technique for Massive Multiple Input Multiple Output Generalized Frequency Division Multiplexing system
Mohammed Jabbar Mohammed Ameen, Saad S. Hreshee · International Journal on Electrical Engineering and Informatics · 2022
Fifth generation (5G) wireless communications technology has great challenges to ensure security.Therefore, required a suitable approach to provide security.Using chaos theory in cryptosystems is one of these ways.In this paper, a new approach was proposed for audio encryption in wireless communication based on multiple chaotic maps.The maps used include Bernoulli, Standard, and Bogdanov maps which are combined with audio based on the modulo operator.The initial condition and the controlling parameters of these maps are used as a secret key.The proposed technique was implemented with a 5G infrastructure that contains Generalized Frequency Division Multiplexing (GFDM), Parallel Spatial Modulation (PSM), and massive Multiple Input Multiple Output (MIMO).The strength of the proposed method against attacks has been verified using histogram, spectrogram, Signal to Noise Ratio (SNR), Spectral Segment SNR (SSSNR), Peak SNR (PSNR), percentage of Difference (P.Diff), Mean Square Error (MSE), Correlation Coefficients (Rxy) , Entropy (H), Linear Predictive Code (dLPC), Log Spectral Distance (dLOG), Frequency Weighted Log Spectral Distance (dFWLOG) ,number of samples change rate (NSCR) and the unified average changing intensity (UACI), keyspace, and key sensitivity.The results show that the effectiveness of the proposed audio encryption technique is secure enough to resist various common eavesdroppers.Furthermore, the encryption-decryption process takes a short computational time, making it suitable for realtime communication.