CAREER: Cryptographic Aspects of Digital Rights Management

本研究从密码学的角度，结合知识产权和法律的有效实施，研究数字内容分发问题。理解、建模和构建用于数字内容分发和权利执行的必要框架和工具是未来数字版权管理(DRM)系统发展的基础。密码学是一种技术，如果应用得当，它在最大限度地减少信任假设、减轻生产和分销成本、促进法律框架以及减轻DRM系统中的威胁方面具有公认的潜力。本研究的方法论观点是收获现代密码学技术，以规范和解决DRM问题的各个方面，并促进对密码学可以为未来的DRM技术提供什么的理解。本研究提供了一个用于对数字内容分发系统和针对它们的敌意行为阵列进行建模的框架，并深入研究了针对DRM环境的新型密码结构的开发。研究了DRM系统的各种加密工具，研究了它们在数字内容分发系统中的互操作性和组成，并检查了它们的威胁缓解能力以及与法律框架的交互。

This research studies the problem of digital content distribution in conjunction with the effective enforcement of intellectual property rights and laws from a cryptographic viewpoint. Understanding, modeling and constructing the necessary framework and tools for digital content distribution and rights enforcement are fundamental for the development of future Digital Rights Management (DRM) systems. Cryptography is a technology that, if applied correctly, has a recognized potential in minimizing trust assumptions, alleviating production and distribution costs, facilitating legal frameworks as well as mitigating threats in the context of DRM systems. The methodological viewpoint of the present research is to harvest the techniques of modern cryptography for the specification and solution of various facets of the DRM problem and advance the understanding of what cryptography can offer to future DRM technologies. The present investigation provides a framework for modeling digital content distribution systems together with the arrays of adversarial behaviors against them and delves into the development of novel cryptographic constructions finely tuned to DRM environments. Various cryptographic tools for DRM systems are investigated, their interoperability and composition within a digital content distribution system are studied and their threat mitigation capabilities as well as interactions with legal frameworks are examined.