RE-ENCRYPTION SECURITY MODEL OVER OUTSOURCED CLOUD DATA

摘要：

　　Cloud computing is recommended as a promising technology,which delivers computational facilities as services to users over the Internet.As well as,the cloud computing brings significant risks for greater exposure to data security when users outsource sensitive data for sharing on cloud servers.To keep sensitive data confidentiality against untrusted cloud service provider,this paper discusses this challenging open issue using re-encryption scheme in outsourced cloud data.On the one hand,it allows the data owner to delegate most of the computation tasks to untrusted cloud servers providers without the need to have knowledge of the underlying plaintexts.On the other hand,it employs double cryptographic methods to limit authorized users accessing updated cloud data with expired keys.This paper also obtains the restrictions of choosing appropriate encryption algorithm to establish secure re-encryption scheme in cloud data services.

关键词： re-encryption cloud computing data privacy outsourced cloud data security

作者: Lizhi Xiong Zhengquan Xu

作者单位: State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan,China

会议类型: 国际会议

会议名称: 2013 International Conference on Information and Network Security(2013信息与网络安全国际会议)

会议地点: 北京

会议语种:英文

页码: 169-173

在线出版日期: 2013-11-22（万方平台首次上网日期，不代表论文的发表时间）