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Extended Proxy-Assisted Approach: Achieving Revocable Fine-Grained Encryption of Cloud Data
Date: 2016/3/24             Browse: 270

Extended Proxy-Assisted Approach: Achieving Revocable Fine-Grained Encryption of Cloud Data

Speaker: Joseph Liu

Time: Mar 24, 5:00pm - 6:00pm.

Location: Room 109, H2 Building

Abstract:

Attribute-based encryption has the potential to be deployed in a cloud computing environment to provide scalable and fine-grained data sharing. However, user revocation within ABE deployment remains a challenging issue to overcome, particularly when there is a large number of users. In this work, we introduce an extended proxy-assisted approach, which weakens the trust required of the cloud server. Based on an all-or-nothing principle, our approach is designed to discourage a cloud server from colluding with a third party to hinder the user revocation functionality. We demonstrate the utility of our approach by presenting a construction of the proposed approach, designed to provide efficient cloud data sharing and user revocation. A prototype was then implemented to demonstrate the practicality of our proposed construction.

Bio:

Dr. Joseph Liu (廖啟瑞博士) 在 2004 年取得香港中文大學信息工程系的博士學位. 他的主要研究範疇包括: 網絡安全、個人隱私、身份核實、公钥密碼、雲安全、智能城市安全等。

他現在在澳大利亞蒙納士大學 (Monash University) 信息技術學院 (Faculty of Information Technology) 擔任高級講師 (Senior Lecturer)。之前,他在新加坡資訊通訊研究院 (Institute for Infocomm Research, I2R) 擔任研究員達 7 年之久。他一共發表超過 100 篇論文,當中包括多份 IEEE 期刊 (例如 IEEE TIFS, IEEE Trans. on Computers, IEEE TKDE, IEEE Trans. on Vehicular Technology, IEEE Network 等), 其中兩篇論文更獲 ESORICS 2014 及 ESORICS 2015 頒發最佳論文獎. 論文被引用超過 3500 次. H 指數高達 26.

 

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