Robust 3D Multi-Image Encryption Scheme Based on Rubik’s Cube–Poker Model

In the age of big data, multimedia communication is becoming one of the most important communication methods. Therefore, it is important to overcome the challenge of processing numerous images safely and efficiently. In this paper, a 3D cross-image encryption scheme is proposed based on the Rubik’s Cube–poker model. The proposed scheme has the following properties: Firstly, it has flexible input image requirements to improve its applicability. Secondly, it has a strong ability to recover from data loss and retains important information in the reconstructed image. Finally, it achieves a lower time cost. Under the same input conditions in the grayscale color space, our proposed scheme achieves an execution time of 0.62 s, which is significantly lower than that of other schemes. The simulation results confirm the correctness, security, and robustness of the scheme.