Plaintext Related Image Encryption Scheme Based on Coupled Map Lattice Model
In this paper,a plaintext-related image encryption scheme based on Coupled Map Lattice(CML)is proposed to address the issue of plaintext correlation,which is an important performance indica-tor of image encryption systems used to evaluate the system's resistance to differential attacks.The scheme first constructs a plaintext-related internal key generation model to generate a key stream related to the plaintext,and then completes the encryption operation under the control of this key stream.The encryp-tion algorithm begins with a round of Zigzag permutation and XOR masking,followed by Zigzag-CBC dif-fusion,and finally another round of Zigzag permutation and XOR masking to produce the ciphertext im-age.Subsequently,security performance analysis of the cryptographic system is conducted using methods such as histogram analysis,correlation analysis,differential attack analysis,and information entropy.Ex-perimental results demonstrate that the proposed plaintext-related image encryption scheme based on Cou-pled Map Lattice exhibits robust security performance and can fulfill the image encryption requirements in the majority of application scenarios.
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