Secure and privacy-preserving DRM scheme using homomorphic encryption in cloud computing  

作　　者：HUANG Qin-long MA Zhao-feng YANG Yi-xian FU Jing-yi NIU Xin-xin 

机构地区：[1]Information Security Center, Beijing University of Posts and Telecommunications [2]National Engineering Laboratory for Disaster Backup and Recovery, Beijing University of Posts and Telecommunications [3]Beijing National Security Science and Technology Co. Ltd

出　　处：《The Journal of China Universities of Posts and Telecommunications》2013年第6期88-95,共8页中国邮电高校学报（英文版）

基　　金：supported by the National Natural Science Foundation of China (60803157, 90812001, 61272519)

摘　　要：Cloud computing provides a convenient way of content trading and sharing. In this paper, we propose a secure and privacy-preserving digital rights management （DRM） scheme using homomorphic encryption in cloud computing. We present an efficient digital rights management framework in cloud computing, which allows content provider to outsource encrypted contents to centralized content server and allows user to consume contents with the license issued by license server. Further, we provide a secure content key distribution scheme based on additive homomorphic probabilistic public key encryption and proxy re-encryption. The provided scheme prevents malicious employees of license server from issuing the license to unauthorized user. In addition, we achieve privacy preserving by allowing users to stay anonymous towards the key server and service provider. The analysis and comparison results indicate that the proposed scheme has high efficiency and security.Cloud computing provides a convenient way of content trading and sharing. In this paper, we propose a secure and privacy-preserving digital rights management （DRM） scheme using homomorphic encryption in cloud computing. We present an efficient digital rights management framework in cloud computing, which allows content provider to outsource encrypted contents to centralized content server and allows user to consume contents with the license issued by license server. Further, we provide a secure content key distribution scheme based on additive homomorphic probabilistic public key encryption and proxy re-encryption. The provided scheme prevents malicious employees of license server from issuing the license to unauthorized user. In addition, we achieve privacy preserving by allowing users to stay anonymous towards the key server and service provider. The analysis and comparison results indicate that the proposed scheme has high efficiency and security.

关 键 词：digital rights management homomorphic encryption proxy re-encryption privacy preserving cloud computing 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]