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Decentralized Attribute-based Encryption and Functional Encryption for Inner Products
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报告题目:Decentralized Attribute-based Encryption and Functional Encryption for Inner Products

时间:2019年5月21日  9:30

地点:文津楼3段628研讨室

内容简介:In this talk, we present a new relation between the primitives decentralized attribute-based encryption (ABE) and functional encryption (FE) for inner products. Particularly, we construct decentralized ABE for the class {0, 1}- LSSS under LWE or DDH assumption via establishing an interesting connection between decentralized ABE and FE for inner products that satisfies a stronger notion. We formalize this new notion and show how to achieve such an FE under the LWE or DDH assumption. Finally, we also point out challenges to construct decentralized ABE for general functions by establishing a relation between such an ABE and witness encryption for general NP statements.

主讲人简介:Feng-Hao Liu(刘峰豪),美国佛罗里达大西洋大学教授,博士生导师。Feng-Hao Liu教授在美国布朗大学取得博士学位,并曾在美国马里兰大学从事博士后研究工作。Feng-Hao Liu教授的研究方向包括密码学、计算复杂理论,尤其是在抗泄露公钥密码、不可延展编码、基于格的公钥密码方案设计方面做出了出色的工作,其研究成功发表于相关领域的顶级会议和期刊CRYPTO、Eurocrypt、TCC、CCS、PKC、Journal of Cryptology等,并获得TCC 2010最佳学生论文奖,此外Feng-Hao Liu教授还曾担任多个顶级国际会议Asiacrypt、PKC等的审稿人。