数字版权管理的关键技术

针对当前基于数字水印或者密码学的数字版权管理技术存在的缺陷,介绍了在多媒体环境下实现数字版权管理涉及到的一些关键技术,包括适合多媒体的加密认证技术、能抵抗几何攻击的数字水印技术、基于脆弱水印的图像/视频/音频认证技术和基于统计分析的被动式图像篡改分析和检测方法等,并分析了这些技术的用途及应达到的技术要求。未来的数字版权保护平台应该是综合利用这些先进技术,实现对数字媒体内容的全方位保护。

Overview on key techniques concerned with digital rights management

This paper proposes some key techniques concerned with the digital rights management, including encryption mechanisms suitable for multimedia information, geometric-attack-free digital watermark, authentication methods for image/video/audio based on vulnerable watermark, and algorithms used to detect and analyze the passive falsification of images based on statistical analysis, and analyses their purposes and technical requirements which should be met. The future digital rights protection platform should comprehensively utilize these techniques to realize the full protection for the digital media contents.