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学术讲座【Extended Proxy-Assisted Approach: Achieving Revocable Fine-Grained Encryption of Cloud Data】

时间:2016-01-05浏览:408设置

时间:2016年1月7日(周四)10:00

地点:仓山校区成功楼601会议室

主讲:澳大利亞蒙納士大學   Joseph Liu高級講師

主办:数学与计算机科学学院、福建省网络安全与密码技术重点实验室 

专家简介:Dr. Joseph Liu (廖啟瑞博士),2004 年获香港中文大學信息工程系博士學位。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。
澳大利亞蒙納士大學(Monash University)資訊科技學院高級講師。之前,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。發表超過 90 篇論文,包括多份 IEEE 期刊,其中2篇論文更獲 ESORICS 2014 及 ESORICS 2015 頒發最佳論文獎, H 指數高達 24。其中有關輕量密碼學的研究, 2013 年被 ISO 採納成國際標準,供業內同行使用。擔任 ProvSec 2007, 2014 以及 ACISP 2016 等學術會議主席。

报告摘要: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.

 

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