Research on image encryption algorithm based on logistic chaotic system
Qing Lü, Te Zhang, Junxiang Wan, Siyuan Xu · International Journal of Computer Applications in Technology · 2025
In the recently proposed image encryption algorithm (Zhang and Zhang, 2020) based on the logistic chaotic system, chaotic sequences and plaintext images are first generated through a key for XOR operations. Subsequently, pixel and block chaos are applied according to the chaotic sequence, finally resulting in the ciphertext image. Results show that the correlation between plaintext and ciphertext images in this algorithm is low, and no ciphertext feedback mechanism exists. Consequently, this algorithm is vulnerable to ciphertext selection attacks. The algorithm is improved, and the relevant test analysis of the improved algorithm is carried out, demonstrating better results than the algorithm proposed by Zhang and others.