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學術報告:Secure Group Data Sharing and Data Auditing in Public Clouds
文章來源: 發布時間:2017-11-16 【字號:

題目:Secure Group Data Sharing and Data Auditing in Public Clouds  

報告人:沈劍 

時間:11月16日上午9:30-11:00 

地點:3224會議室  

Abstract:  

Data sharing in cloud computing enables multiple participants to freely share the group data, which improves the efficiency of work in cooperative environments and has widespread potential applications. However, how to ensure the security of data sharing within a group and how to efficiently share the outsourced data in a group manner are formidable challenges. Note that key agreement protocols have played a very important role in secure and efficient group data sharing in cloud computing. By leveraging the key agreement and the group signature, on the one hand, group members should communicate anonymously with respect to the group signature, while the real identity of members can be traced if necessary. On the other hand, a common conference is derived based on the key agreement to enable group members to share and store their data securely. In addition, it becomes an urgent need for users to verify whether CSPs have stored their data securely. Hence, an efficient public auditing protocol directed at outsourced data with global and sampling blockless verification as well as batch auditing is required. A doubly linked info table and a location array can be engaged to construct a novel dynamic structure to reduce the computational and communication overheads.  

報告人簡介: 

沈劍,江蘇南京人,現任南京信息工程大學計算機與軟件學院副院長、江蘇省網絡監控工程中心副主任,教授、博導、云計算安全團隊學術帶頭人,2015年入選江蘇省“雙創人才”-雙創博士、入選江蘇省“六大人才高峰”。一直從事信息安全、密碼學、網絡安全、數據安全等方面的研究工作。沈劍分別于2009年8月和2012年8月在韓國獲得工學碩士學位和工學博士學位,并于2012年12月回國任職。主要研究方向包括:密鑰協商、公鑰加密、數據分享、輕質認證等方向。沈劍擔任多個國際期刊編委及多個國際會議程序委員會委員。近年來,已在IEEE Transactions、IEICE Transactions等國內外期刊和國際會議上發表學術論文十余篇。主持國家自然科學基金青年和面上項目各一項、參與國家自然科學基金重點項目一項,主持南京市留學回國人員科技活動項目優秀項目一項等。  

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