Eight dimensional hyperchaotic system-based horizontal Fridrich scrambling algorithm for secure endoscopy video encryption
Shyni Vinse R P, L. Femila · Journal of the Chinese Institute of Engineers · 2026
Encrypting endoscopic video is one of the biggest challenges to protecting private medical information. Security and performance are usually compromised by traditional encryption techniques, particularly with high-resolution video frames. This research presents an 8D hyperchaotic picture encryption system utilizing horizontal Fridrich scrambling (8D-HFH) for secure key generation. Hash arrays are initially generated using SHA-512 based on plaintext. Chaotic key flows are produced by hash arrays after initial values and control variables are created. In order to encrypt chaotic images, the horizontal Fridrich (H-Fridrich) scrambling method scrambles the original data. A chaotic diffusion technique is applied to the pixels of the scattered image for an encrypted image. Compared to existing methods, the proposed method yields an NPCR of 99.95%, a UACI of 33.42%, and an entropy of 7.45, respectively. This algorithm is superior in terms of security while maintaining image quality compared to other models in terms of high image entropy values.