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An Improved Image Encryption using 2D Logistic Adjusted Sine Chaotic Map with Shuffled Index Matrix

Image encryption is used to enhance the protection of images when they are transferred over the network. Due to the complex properties of chaotic systems, chaos-based image encryption has been extensively investigated and used for real-time, secure transmission of images over networks. The proposed method uses the Two-Dimensional Logistic Adjusted Sine Chaotic Map (2D-LASCM) image encryption scheme derived from the Sine and Logistic maps. Shuffled index matrices created from chaotic matrices and plain-image added with random values are used in the encryption process to improve the security level of cipher-image. The proposed approach has excellent image encryption efficiency and a high ability to withstand various attacks, based on simulation results and security analysis.