Android电子书DRM解决方案

DRM（Digital Right Management）是一个管理数字版权的机制,让数字内容受到安全的保护,也可以依照电子书服务出版商的需求,设定电子书数字信息的权限（例如使用期限、使用次数和使用范围…等）,可以藉由数字版权管理系统来达到防制盗版的功用。     

数字版权管理技术的安全性综述

数字版权管理技术已经成为网络环境下保护数据内容的合法交易、传播和使用的一个重要手段。论文主要阐述了数字版权管理技术在安全性方面的最新进展,给出了数字版权管理标准的发展情况,分析了数字版权管理系统的安全性需求,总结了与数字版权管理有关的安全技术,论述了已有的技术在处理安全性问题上的优势和不足,随后给出了数字版权管理的安全解决方案并探讨了未来的发展方向。     

家庭网络技术专题——家庭网络相关技术

家庭网络是一个综合的概念，包含了多个方面的技术。本文对家庭网络的发展可能会产生重要影响的一些技术，如联网技术、编址技术、设备自动发现和自动配置技术、媒体技术、家庭业务平台技术、安全技术、服务质量保证技术，以及数字内容和版权管理进行了综述和分析。     

数字版权管理

自广播电视诞生之日起，内容版权就一直是人们关注的核心。随着技术的发展，媒体内容的记录和传输已经逐渐从模拟方式转向了数字方式。数字化、网络化．特别是宽带网络的快速普及．大大加快了数字媒体复制和传播的速度．数字版权管理（DRM）的矛盾就显得更。加突出，需要建立一套完整的数字版权管理的基础设施，这既包括版权管理等技术措施．还包括信任体系建立等管理措施。它不仅有助于保护数字媒体内容提供者和发布者的权益，促进相应消费类电子产品制造业的发展．     

数字版权管理中权限描述语言研究

数字版权管理为数字网络环境下数字内容交易和传播提供了保障,而权限描述语言是数字版权保护技术中的关键技术.文章分析了权限描述语言的研究现状,论述已有权限描述语言的优势和不足,并探讨了未来的研究方向.     

数字版权管理及其在移动网络环境中的应用需求

1何为数字版权管理 数字版权管理是用来控制和限制电子设备上数字媒体内容使用的技术手段的统称,可以保护文件不被非法授权使用并对财务交易处理进行管理,同时保证版权持有人得到相应的补偿.除了传统的广播方式,目前越来越多的是通过计算机、手机等电子设备.通过电子手段进行媒体存储产生了一系列内容保护问题,它要求我们有全新的模式和安全保护构想.传统的广播电视或数字无线电广播设备使用的是经过验证的系统确保传输到设备的广播流的安全性,而现在的媒体是作为文件形式存储并随时进行回放,这就要求有全新的内容保护形式来保证媒体在失去控制的状态下不会被轻易地复制和任意传播.     

家庭网络相关技术

家庭网络是一个综合的概念,包含了多个方面的技术。本文对家庭网络的发展可能会产生重要影响的一些技术,如联网技术、编址技术、设备自动发现和自动配置技术、媒体技术、家庭业务平台技术、安全技术、服务质量保证技术,以及数字内容和版权管理进行了综述和分析。     

数字版权管理在移动应用中的解决方案

近年来无线增值业务迅猛发展，以数字媒体出现的内容产品倍受欢迎，与此同时数字内容易于非法复制、分发的特点使得对数字内容版权的保护成为影响移动应用市场发展的重要因素。论文依据开放移动联盟（Open Mobile Alliance，OMA）对数字版权管理（Digital Rights Management，DRM）的规范，提出了一种移动应用中数字版权管理的解决方案。该方案使用AES算法对数字内容加密有效地保护了版权，采用ACE的网络框架保证系统的并发性，消息传递和配置文件应用xml文件便于在现有系统上部署和使用。     

数字版权管理的基本理念与发展动向

要真正创造全新的数字媒体时代，除了数字技术和网络技术外，还需要建立一套完整的数字媒体版权管理(DRM)基础设施，这既包括皈权保护等技术措施，还包括信任体系建立等管理措施，它将使我们进入内容产监能够良性发展，用户能够获得全新体验的新时代。DRM的研究开发工作现在处于起步阶段，本将回颐数字版权管理的国内外发展动向，包括消费电子领域、数字广播领域、标准化领域的一些努力和近期进展，作为建立我国数字媒体版权管理体系的参考。     

广播影视的数字版权管理及其需求

随着互联网和多媒体技术的迅猛发展,数字媒体得到了广泛的传播。但是由于数字媒体易于无损拷贝、分发等特性,媒体节目和内容可以被随意地复制、传播、共享和使用,这严重阻碍了广播影视行业的正常发展。本文从广播影视的角度,介绍了数字版权管理的必要性,分析广播影视数字版权管理的需求,并回顾了数字版权管理的国内外研究动向,展望了数字版权管理给广播影视行业带来的美好前景。     

A digital rights management system for digital broadcasting based on home servers

This paper presents a digital rights management (DRM) system for digital broadcasting based on home servers (DBHS) using receivers with large-capacity storage devices. DBHS will enable viewers to enjoy 'television anytime/anywhere' by utilizing these storage functions. Our proposed DRM system is suitable for broadcasting, and allows both rights protection and advanced access to content held on home storage devices (in terms of validity, usage and charge conditions, and so on). We developed a prototype DRM system using a Pentium3 personal computer (1 GHz) in order to evaluate the nonlinear playback and 'trick-play' modes of encrypted content on the hard disk drive (HDD). Using this prototype, we confirmed that the nonlinear playback of content encrypted using the proposed DRM system could be processed in real time. The functionality in terms of trick-play modes was equal to that of commercially available hard disk recorders. In addition, we developed a security module for the DRM system in the form of a smart card with a built-in processor. We confirmed that the proposed DRM system utilizing the new smart card could be applied to DBHS.     

基于P2P的数字版权管理系统体系及协议研究

在分析了P2P网络模式和数字版权管理(DRM)技术体系的基础上,提出了基于P2P模式的DRM系统体系,并对系统体系结构和传输协议进行了研究与探讨.基于体系的拓扑结构,提出了体系功能框架,并对其中内容管理、内容标识、付费机制和质量控制进行分析和设计.同时以数字内容的生命周期和价值链为依据,对体系工作的流程进行了深入探讨.给出了体系的数字内容上传和下载协议,实现了P2P网络模式与DRM技术体系的有效集成.     

MPEG-21 Rights Expression Language: enabling interoperable digital rights management

The Internet has spawned a revolution in the way people distribute content and access services. At the same time, the availability of broadband and wireless networks has increased, as have the capability and portability of computing and consumer electronic devices. These factors have fueled the development of new technologies to automate, manage, and secure content flow and service access over the Internet. This paper deals with the recently approved ISO standard, MPEG-21 Rights Expression Language (REL). This language is precise, flexible, extensible, and rich in expressing rights. Thus, it can support reliable, flexible, and cost-effective interoperable digital rights management (DRM) systems and applications for electronic commerce and enterprise management of content and services. It is an international standard for expressing and interpreting rights for using and distributing content, resources, and arid services. As an enabling technology for interoperable DRM, its' adoption by industry and incorporation into products certainly takes time. The challenge is to proliferate the REL's adaptation across many different DRM systems as well as conditional access and authorization systems. Moreover, the REL must pervade not only entertainment but also many other applications, such as enterprise, medical information, and even privacy protection.     

数字版权管理技术及应用研究进展

随着信息与通信技术的飞速发展,数字媒体内容的分发、复制与编辑变得越来越普遍.数字内容的版权管理和内容保护可以减少内容盗版和不规范使用行为.本文介绍了数字版权管理技术的基本原理,综述了关键技术,分析了国内外应用情况,并讨论了几个具有挑战性的问题.最后,总结了全文,并展望了该技术领域的研究重点和发展方向.     

流媒体DRM系统互操作性的研究

通过分析当今流媒体数字版权管理(DRM)的发展现状,提出了流媒体DRM系统存在的互操作性问题及解决主要途径.结合国外对流媒体DRM系统互操作性的研究,对如何构建一个互操作性体系平台进行了探讨.     

Digital rights management system with user privacy,usage transparency,and superdistribution support

In the modern world, digital content has been massively produced, distributed, and consumed by human beings; consequently, how to protect the rights and benefits of content consumers, producers, and distributors has become a crucial issue. One promising solution is to design a full‐fledged digital rights management (DRM) system. In this study we introduce a new design on the digital rights management system providing user privacy, usage transparency, and superdistribution. A comprehensive set of DRM processing functions and corresponding mechanisms are developed in our system to support various business process requirements. Superdistribution support is embedded in our system design. A prototype is implemented to verify our system design. To protect consumer privacy, a temporary identity is generated for each consumer using the KryptoKnight protocol. Elliptic curve cryptography‐based encryption scheme is adopted for messages transmitted among servers and client over an unsecure communication channel. For usage transparency, a user‐friendly DRM client package (software) is introduced in the proposed DRM system to achieve content protection and support user convenience in usage.Copyright © 2012 John Wiley & Sons, Ltd.     

移动数字内容分发业务的版权保护管理

本文分析了移动数字内容分发业务版权管理的必要性,版权管理国际标准、解决方案及存在的问题.     

云计算平台下基于属性加密的动态版权使用控制方案（英文）

In order to achieve fine-grained access control in cloud computing,existing digital rights management(DRM) schemes adopt attribute-based encryption as the main encryption primitive.However,these schemes suffer from inefficiency and cannot support dynamic updating of usage rights stored in the cloud.In this paper,we propose a novel DRM scheme with secure key management and dynamic usage control in cloud computing.We present a secure key management mechanism based on attribute-based encryption and proxy re-encryption.Only the users whose attributes satisfy the access policy of the encrypted content and who have effective usage rights can be able to recover the content encryption key and further decrypt the content.The attribute based mechanism allows the content provider to selectively provide fine-grained access control of contents among a set of users,and also enables the license server to implement immediate attribute and user revocation.Moreover,our scheme supports privacy-preserving dynamic usage control based on additive homomorphic encryption,which allows the license server in the cloud to update the users' usage rights dynamically without disclosing the plaintext.Extensive analytical results indicate that our proposed scheme is secure and efficient.     

Interoperable DRM Framework for Multiple Devices Environment

As networks increase and cross‐convergence occurs between various types of devices and communications, there is an increasing demand for interoperable service in the business environment and from end users. In this paper, we investigate interoperability issues in the digital rights management (DRM) and present a practical framework to support interoperability in environments with multiple devices. The proposed architecture enables end users to consume digital content on all their devices without awareness of the underlying DRM schemes or technologies. It also enables DRM service providers to achieve interoperability without costly modification of their DRM schemes.