Cloud Computing Data Transmission Security Guarantee Model Based on Mod256-PSC Hybrid Encryption Algorithm

With the widespread application of cloud computing technology, the secure transmission of image data in cloud environments has become an important issue.Traditional image encryption techniques face challenges in dealing with large-scale and dynamic cloud computing environments, such as complex key management and insufficient encryption efficiency.To address these issues, this study proposes an innovative image encryption decryption algorithm that combines pixel sorting classification (PSC) method and block mod256 scrambling encryption (SE) technology, aiming to improve the security of image data transmission in cloud computing.Through empirical experiments, this study found that the newly proposed algorithm exhibited superior performance while maintaining image integrity.In comparison to existing technologies, the new technology has demonstrated an improvement in both peak signal-to-noise ratio (PSNR) and image size.Specifically, at lower data embedding rates, the average PSNR value of this algorithm ranged from 52 dB to 54 dB, and it exhibited high security ratings on different types of images.In addition, the algorithm also demonstrated strong robustness in resisting various attack paradigms in cloud computing systems.Although the algorithm proposed in this study has limitations in real-time processing, it provides a new approach for secure transmission of image data in cloud computing and valuable reference for future research.Future work will focus on optimizing the realtime processing capabilities of algorithms and further validating and expanding them in real-world cloud computing environments.