<p>This paper proposes a color image encryption algorithm based on a two-dimensional chaotic map to enhance the security and attack resistance of image encryption. Traditional low-dimensional chaotic systems suffer from problems such as simple chaotic behavior and insufficient randomness. To address these issues, a 2D chaotic map (2D-CSLCM) is constructed by combining the logistic map and cubic map, which enhances the randomness and security of the image encryption process. Based on this chaotic map, a color image encryption algorithm (CSLCM-IE) is proposed. The algorithm employs circular shifting, row-column diffusion, and cross-plane scrambling and diffusion to effectively conceal image information and improve the security of the algorithm. Experimental results demonstrate that the proposed algorithm exhibits significant advantages in key sensitivity and resistance to attacks. In addition, compared with existing algorithms, CSLCM-IE requires less computation time, indicating that the algorithm possesses strong computational performance.</p>