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学术讲座【Block-level Message-Locked Encryption for Secure Large File Deduplication】

时间:2015-11-26浏览:786设置

时间:2015年12月1日(周二)下午15:30

地点:仓山校区成功楼601会议室

主讲:澳大利亚卧龙岗大学    穆怡教授 

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:穆怡,教授,澳大利亚卧龙岗大学计算机科学与软件工程学院院长、计算机安全研究中心主任,福建师范大学“闽江学者”讲座教授,研究方向包括密码技术、网络安全、电子商务安全、计算机安全。近年主持和参加完成了10余项澳大利亚国家自然科学基金等各类项目,发表学术论文260多篇,合作出版编著7本。应邀担任80多个国际学术会议的主席或程序委员会委员、7个国际学术期刊编委。

报告摘要:Deduplication is a popular technique widely used to save storage spaces in the cloud. To achieve secure deduplication of encrypted files, Bellare et al. formalized a new cryptographic primitive named Message-Locked Encryption (MLE) in Eurocrypt 2013. Although an MLE scheme can be extended to obtain secure deduplication for large files, it requires a lot of metadata maintained by the end user and the cloud server. In this talk, a new approach is introduced to achieve more efficient deduplication for (encrypted) large files, named as Block-Level Message-Locked Encryption, which can achieve file-level and block-level deduplication, block key management, and proof of ownership simultaneously using a small set of metadata. The scheme can be easily extended to support proof of storage, which makes it multi-purpose for secure cloud storage.

 

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