A new light weight encryption approach to secure the contents of image

摘要

In this paper, a light weight encryption approach is proposed to secure the contents of digital image at different levels. The proposed approach is based on moves of knight pawn used in chess board and genetic algorithm. The procedure comprises four stages. In first stage, the numbers of initial positions for knight moves are considered. The number of moves required for each knight is chosen in second stage. Two knight move points are selected randomly in third stage. Finally, crossover operation is applied on selected moves to degrade the visual quality of image. The performance analysis of the proposed method is measured in terms of correlation coefficient, entropy and Peak Signal to Noise Ratio. The analysis carried out reveals that the proposed algorithm works successfully to secure the information in an image at different levels.