A randomized CPA-secure asymmetric-key chaotic color image encryption scheme based on the Chebyshev mappings and one-time pad

Ali Shakiba

Abstract: Highlights•A novel chaotic asymmetric-key color image encryption algorithm is proposed.•The multiplicative coupled Chebyshev-based encryption scheme allows arbitrary sizes of keyspace.•One pixel may appear in any position throughout the image.•The proposed technique uses tries to achieve the benefits of the one-time pad.