Implementation of Gray Image Encryption using Multi-Level of Permutation and Substitution
Dina Riadh, Rasha Mohamed Shaker · International Journal of Applied Information Systems · 2015
In this paper a new Gray image encryption system is presented.It is based on permutation and substitution of image pixels using secret keys in time domain.The system is with multilevel to increase the security and to present an encrypted image with low pixel correlation, high entropy and uniform distributed histogram.The Tinkerbell map, Zaslavsky Map and Arnold Transform are employed in keys generation to be used in the permutation and substitution process.Test results are done with definite investigation to show that the proposed image encryption is very secure because of its vast key space and robust permutation-diffusion mechanism.