Improvement in Key Matrix of Hill Cipher System Based on Chaos Theory
LI Xu-zhi · Journal of Liaoning University of Technology · 2009
Key matrix was the core of Hill encryption system,Considering the problem of no complete random of the current self-invertible key matrix in the Hill encryption system for image encryption,the self-invertible key matrix element was generated by using complete random chaos dynamic equation.Key matrix generation algorithm based on chaos and self-invertible matrix theory was proposed.Experiment results expatiated that encrypting image with chaos self-invertible key matrix improved encryption strength and robust effectively without affecting encryption speed and encryption effect.