数字电影安全系统关键技术

Key Technologies of Digital Cinema Security System

数字电影安全系统是数字电影技术的重要组成部分。本文根据DCI规范V1.1版本,分析了数字电影安全系统的体系结构,探讨了数字电影安全体系的关键技术——内容加密、内容加密密钥传送、链接加密、取证标记和安全日志,并重点介绍了数字电影安全系统的两种重要组件——安全管理器和媒体块。

Content security is a critical component of a digital cinema system. Based on DCI specification V1.1, this paper analyzes the security architecture of digital cinema, and discusses key technologies about security system including content encryption, key delivery of content encryption, link eneryption, forensic marking, and security logging. It is emphasized of two important entities, i.e. security manager and media block.