Digital Rights Management：Model,Technology and Application

with rapid achievement of current information technology and computing ability and applications,much more digital content such as films,cartoons,design drawings,office documents and software source codes are produced in daily work,however to protect the content being copying,shared or deliberately stolen by inside or outside,digital rights management(DRM) became more and more important for digital content protection.In this paper,we studied various DRM model,technology and application,and first proposed DRM Security Infrastructure(DSI),in which we defined encryption,hash,signature algorithm,watermarking algorithms,authentication,usage control,trusted counter,conditional trace,secure payment,and based on the DSI we then proposed a whole classification approach and architecture of all kinds of DRMs,in which we proposed 6 typical classes of copyrights and content protection DRMs architecture:(1) Software-oriented DRM,(2) e Book-oriented DRM,(3) Video-oriented DRM,(4) Image-Oriented DRM(5) Unstructured data oriented DRM,(6) Text-oriented DRM.Based on the above DSI,we then proposed a dynamic DRM model selection method for various DRM application,which can be adapted dynamically for different technology of different applications,which can provide awhole solution for variant DRM development in a rapid and customized mode.The proposed DRM method,technology and application in this paper provided a common,flexible and extendable solution for variant DRM scenes,and can support rapid and customized development.Moreover,we proposed an opinion that the future life will enter into a new era that the content usage and consumption will not again adopt DRM technology rather than with law,liberty and morality.

Home Network and Digital Rights Management Technology

The home network is a major concern for the growth of digital and information society. Yet, how to guarantee the security of its digital content and protect the legal benefits for each section of the value chain becomes a crucial "bottleneck" in the home network development. The Digital Rights Management (DRM) technology provides total solution for usage, storage, transfer, and tracing the digital contents and rights. Its basic features are systematic and controllability. Considering the growth of the new media and services and the requirements of the Intellectual Property Rights (IPR) protection in a home network, it's necessary to solve consistency problems in usage, storage, and transfer of contents and rights. In addition, it is inevitable to conduct researches of key techniques such as end-to-end secure transmission, conditional access and play, and right description.

A Digital Right Management Model for Distribution of Digital Audiovisual Content

This paper presents a digital rights management model, which considers the integrated factors including legality, communication security, integrity of the content, and trading fairness. The architecture of the model, the necessary protocol for the copyright control and content distribution, the authentication mechanism which offer consumption registration for content fair distribution, of the model are all provided. The scheme also provides distribution and evidence for using the copyright of digital content fairly and effectively. Finally, analysis shows the proposed model has both high security and good performance.

A Novel Digital Rights Management Scheme in P2P Networks

P2P networking is a distributed application architecture that partitions tasks or workloads between peers. How to integrate P2P networks and DRM to offer a novel content distribution mode for digital media resources is a significant research project. In this paper, a novel DRM architecture in P2P Networks is proposed, three phases include content provide phase, content purchase phase and content access phase, are modeled, and key technologies are introduced. Finally analysis indicates that the proposed scheme has the characteristics of security, controllability and scalability.

Digital Rights Management for a Chinese XML Text Centre

The Electronic Text Centre of the OpenUniversity of Hong Kong(OUHK)has been in full operationsince early 2001.It currently houses 7,300+electronictexts,including free electronic titles,electronic titlespurchased directly from the market,and about,1,000 locallyproduced electronic titles.The locally produced titles are notavailable in the market but require local digitization andnegotiation with publishers with regard to the right to use(RTU)them so as to meet the learning needs of the OUHKcommunity.Nearl...

Dynamic Management of Digital Rights for Long-term Preservation：the Expert System Approach

This presentation focuses on the complex issue of managing digital rights for long-term preservation. It describes the strategy and the methodology adopted within the SPAR project (French National Library), which rely on a special kind of knowledge-based system.

A DRM System Based on Mobile Agent for Digital Rights Redistribution

We propose a digital rights management （DRM） system based on mobile agent to protect the copyrights of content providers. In the system, the content provider creates a time limited blackbox out of an original agent and dispatches it to the user end to enforce DRM functions. The blackbox is an agent that can resist the attacks from the malicious user in a certain time interval. Owing to digital rights redistribution support, the user whose rights belong to redistribution category can transfer his rights to other users. Moreover, by introducing public key infrastructure （PKI） and certificate authority （CA） role, the security of the session can be ensured. An analysis of system security and performance and a comparison with traditional DRM system is given.

REAL-TIME LICENSING MANAGEMENT OF SECURE MULTIMEDIA CONTENT DELIVE RY

Media Commerce is now becoming a new trend which results fr om faster development of network bandwidth and high availability of multimedia t echnologies, how to protect media content from being used in a right-violated w ay is one of most important issues to take into account. In this paper, a novel and efficient authorization and authentication Digital Rights Management (DRM) s chema is proposed firstly for secure multimedia delivery, then based on the sche ma, a real-time digital signature algorithm built on Elliptic Curve Cryptograph y (ECC) is adopted for fast authentication and verification of licensing managem ent, thus secure multimedia delivery via TCP/RTP can efficiently work with real -time transaction response and high Quality of Service (QoS) . Performance eval uations manifest the proposed schema is secure, available for real-time media s tream authentication and authorization without much effected of QoS. The propose d schema is not only available for Client/Server media service but can be easily extended to P2P and broadcasting network for trusted rights management.

The Digital Fingerprinting Method for Static Images Based on Weighted Hamming Metric and on Weighted Container Model

The algorithm of fingerprint constructing for still images based on weighted image structure model is proposed. The error correcting codes that are perfect in weighted Hamming metric are used as a base for fingerprint constructing.

Encrypted data sharing with multi-owner based on digital rights management in online social networks

The online social networks（OSNs） offer attractive means for social interactions and data sharing, as well as raise a number of security and privacy issues. Although current solutions propose to encrypt data before sharing, the access control of encrypted data has become a challenging task. Moreover, multiple owners may enforce different access policy to the same data because of their different privacy concerns. A digital rights management（DRM） scheme is proposed for encrypted data in OSNs. In order to protect users＇ sensitive data, the scheme allows users outsource encrypted data to the OSNs service provider for sharing and customize the access policy of their data based on ciphertext-policy attribute-based encryption. Furthermore, the scheme presents a multiparty access control model based on identity-based broadcast encryption and ciphertext-policy attribute-based proxy re-encryption, which enables multiple owners, such as tagged users who appear in a single data, customize the access policy collaboratively, and also allows the disseminators update the access policy if their attributes satisfy the existing access policy. Security analysis and comparison indicate that the proposed scheme is secure and efficient.

Secure and Efficient Digital Rights Management Mechanisms with Privacy Protection

In the Internet or cloud computing environments, service providers provide more and more content services. Users can use these convenient content services in daily life. The major data of the user are maintained by the service providers except that some personal privacy data are stored at the client device. An attacker may try to invade the systems, and it will cause the damage of users and service providers. Also, users may lose their mobile devices and then it may cause the data disclosure problem. As a result, the data and privacy protection of users become an important issue in these environments. Besides, since many mobile devices are used in these environments, secure authentication and data protection methods must be efficient in these low resource environments. In this paper, we propose an efficient and privacy protection digital rights management(DRM)scheme that users can verify the valid service servers and the service servers can ensure the legal users. Since the key delegation center of the third party has the robust security protection, our proposed scheme stores the encrypted secret keys in the key delegation center. This approach not only can reduce the storage space of the user devices, but also can recover the encrypted secret keys in the key delegation center when a user loses her/his devices for solving the device losing problem.

General digital rights management solution based on white-box cryptography

Digital rights management(DRM) applications are usually confronted with threats like key extraction, code lifting, and illegal distribution. White-box cryptography aims at protecting software implementations of cryptographic algorithms and can be employed into DRM applications to provide security. A general DRM solution based on white-box cryptography was proposed to address the three threats mentioned above. The method is to construct a general perturbation-enabled white-box compiler for lookup-table based white-box block ciphers, such that the white-box program generated by this compiler provides traceability along with resistance against key extraction and code lifting. To get a traceable white-box program, the idea of hiding a slight perturbation in the lookup-table was employed, aiming at perturbing its decryption functionality, so that each user can be identified. Security analysis and experimental results show that the proposed DRM solution is secure and practical.

基于DRM的电子文档保护系统设计与实现

基于DRM的电子文档保护技术是一种新的信息安全技术,主要为了解决电子政务网中电子文档内容保护和安全分发问题。文章设计和实现一种基于DRM的电子文档保护系统,并详细论述了电子文档保护机制、系统模型及其关键技术。

OMA DRM技术体系研究综述

为了对最新发布的开放移动联盟(OMA)数字版权管理(DRM)标准的技术体系结构有一个系统全面的认识,积极推动我国DRM标准的制定和数字内容保护技术的应用研究,该文在深入研究最新发布的OMA DRM2.0规范的基础上,对OMA DRM技术体系结构:版权对象获取协议(ROAP)、安全模式、体系结构、内容格式和版权描述语言进行了详细分析,然后从综合角度给出一个系统全面的OMA DRM工作机制:OMA DRM工作流程和原理,最后,对OMA DRM性能做了详细分析:OMA DRM2.0和OMA DRM1.0的主要区别,以及OMA DRM2.0的尚待改进之处。

云计算环境下支持属性撤销的外包解密DRM方案

数字版权管理(digital rights management,DRM)是我国信息化建设的重要内容.但高昂的投资成本和欠佳的用户体验是其进一步推广的瓶颈.而已有的采用云计算解决DRM瓶颈问题的研究大都只着眼于云计算的存储服务功能,较少关注云计算的计算优势.提出了一种云计算环境下支持属性撤销的外包解密DRM方案.考虑到DRM中用户隐私保护的问题,提出用户通过匿名标签购买许可证.此外,为了充分发挥云计算在计算上的优势以及可以灵活、细粒度地撤销用户的属性,提出了一种支持属性撤销的外包解密CP-ABE(ciphertext-policy attribute-based encryption)机制.与已有的基于云计算的数字版权保护方案相比,提出的方案在保护内容和用户隐私的同时,支持灵活的访问控制机制和细粒度的用户属性撤销,并且支持CP-ABE的解密外包计算,方案具有较好的实用性.

基于可信计算的DRM互操作研究

出于对自有数字内容产品的保护,不同的内容提供者采用不同的保护方法,同时也为消费者带来了数字内容使用上的不便。分析当前DRM在主流开放式操作系统中实现时存在的问题,指出可信计算(Trusted Computing,TC)环境下DRM互操作实现的可靠性,并给出一种基于可信计算的安全的互操作解决办法。

基于P2P模式的DRM系统体系和协议研究

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和探讨。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,对体系的工作流程进行了深入的探讨。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。

DRM技术的发展及其对数字图书馆的影响

文章阐述了数字版权管理(DRM)技术的概念和功能架构,分析了DRM技术在电子书版权管理中的技术路线,探讨了DRM技术对数字图书馆资源管理与用户服务的影响。

基于Windows Media SDK的DRM系统开发

随着网络的发展,数字媒体文件的盗版问题的日益泛滥,Microsoft Windows Media 9在编码过程中提供了对数字权限管理(DRM)的支持,可实现对数字媒体文件的加密保护。该文简要介绍了Microsoft的DRM技术原理及工作流程,叙述了如何采用DRM技术保护网站上的音频和视频资料。重点描述了如何基于Windows Media Rights Manager SDK创建认证服务器,提供认证许可的发放及身份的验证,如何基于Windows Media Encoder SDK 创建一个数字权限管理(DRM)系统来生成密钥、打包、加密和发行数字媒体内容。