A Hybrid Approach to Image and Signal Encryption Using Wavelet Analysis and Permutation Schemes

In an age of rapid digital communication and data exchange, the protection of multimedia information such as images and signals is of paramount importance. This paper presents a hybrid encryption approach that combines wavelet transform and permutation techniques to enhance data security. The proposed method leverages the multi-resolution capabilities of wavelet analysis to decompose data, followed by a permutation scheme to disrupt pixel or signal sample positions, ensuring high confusion and diffusion properties. The results demonstrate improved security metrics, including entropy, correlation coefficients, and histogram uniformity, compared to traditional encryption methods. This hybrid framework proves to be both efficient and robust for real-time multimedia encryption.