This book presents novel hybrid encryption algorithms that possess many different characteristics. In particular âœHybrid Encryption Algorithms over Wireless Communication Channelsâ examines encrypted image and video data for the purpose of secure wireless communications. A study of two different families of encryption schemes are introduced: namely permutation-based and diffusion-based schemes. The objective of the book is to help the reader selecting the best suited scheme for the transmission of encrypted images and videos over wireless communications channels with the aid of encryption and decryption quality metrics. This is achieved by applying number-theory based encryption algorithms such as chaotic theory with different modes of operations the Advanced Encryption Standard (AES) and the RC6 in a pre-processing step in order to achieve the required permutation and diffusion. The Rubikâs cube is used afterwards in order to maximize the number of permutations. Transmission of images and videos is vital in todayâs communications systems. Hence an effective encryption and modulation schemes are a must. The author adopts Orthogonal Frequency Division Multiplexing (OFDM) as the multicarrier transmission choice for wideband communications. For completeness the author addresses the sensitivity of the encrypted data to the wireless channel impairments and the effect of channel equalization on the received images and videos quality. Complete simulation experiments with MATLABÂ codes are included. The book will help the reader obtain the required understanding for selecting the suitable encryption method that best fulfills the application requirements. . Language: English