Journal
IEEE ACCESS
Volume 11, Issue -, Pages 83833-83851Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/ACCESS.2023.3302012
Keywords
Image encryption; chaotic map; chaotic sequence; key sensitivity
Ask authors/readers for more resources
In this work, second-order chaotic maps with optimized random coefficients are proposed for image encryption. The optimal chaotic maps are found using screening conditions and a particle swarm optimization algorithm. Key sensitivity analysis confirms the high security of the optimal chaotic maps. A hybrid sequence generation scheme is also proposed to reduce image encryption time.
Chaotic maps have been widely applied on image encryption for their complexity and sensitivity to key variation. In this work, we propose second-order chaotic maps with optimized random coefficients to generate chaotic sequences for image encryption. Two screening conditions are proposed to identify 300 candidate chaotic maps in terms of complexity indices K and spectral entropy (SE). A particle swarm optimization algorithm is developed to search for the optimal chaotic maps under eight different weighting schemes. The optimal chaotic maps can achieve N-p = 2, D-KY = 2, CD = 2, K > 0.9, SE > 0.9 and PE > 0.7. Key sensitivity analysis on all the system parameters and initial values confirms high security of the optimal chaotic maps. A hybrid sequence generation (HSG) scheme is also proposed to further reduce the image encryption time.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available