基于SM4算法的白盒密码视频数据共享系统

基于SM4算法的白盒密码视频数据共享系统是一种保障监控视频数据跨级跨域共享安全的系统，提出了一种基于国密SM4算法的白盒密码实现方式，并分析了算法的安全性，解决了SM4算法在非信任硬件环境中的安全运行问题。研制了基于后台权限控制机制的视频数据安全共享软件系统，包括共享数据上传/下载、共享审核、数据白盒加密处理、访问控制、基于白盒密码算法的共享视频解密播放器，实现了视频数据共享全过程的安全管控。搭建了实验环境，对所提系统进行了功能性能实验。实验结果表明，所提系统功能性能满足设计要求。 

White-box cryptographic video data sharing system based on SM4 algorithm

White-box cryptographic video data sharing system based on SM4 algorithm is a system that guarantees the security of cross-level and cross-domain sharing of surveillance video data.In this paper, we propose a white-box cipher implementation method based on SM4 cryptographic algorithm, and analyze the security of the algorithm, solves the problem how the SM4 algorithm can compute safely in untrusted hardware environments.In addition, we developed a video data security sharing software system based on background permission control mechanism, including shared video data upload/download, sharing audit, data white-box encryption, access control functions, and shared video decryption player based on white-box cryptographic algorithm, realizing the security management and control of the entire process of video data sharing.Then we set up the experimental environment, and the system's functional performance experiment was performed. The experimental results show that the system's functional performance meets the design requirements.