Attribute based encryption, Lattice trapdoor, and Evasive LWE
- 講者謝耀慶 先生 (美國華盛頓大學)
邀請人:鐘楷閔 - 時間2023-07-04 (Tue.) 13:30 – 15:30
- 地點資訊所新館101演講廳
摘要
Attribute based encryption is a generalization of encryption scheme which allows fine-grained access control. Since its proposal, there has been numerous works on its construction, variation, and application. Among the existing lattice-based ABE, the techniques around lattice trapdoor plays a crucial role in the construction. Very recently, Wee [Eurocrypt'22] proposed the evasive LWE assumption, a new trapdoor-related assumption that shows new possibility on constructing efficient ABE from lattice. In this talk, I will give some overview on the background of lattice trapdoor and lattice-based ABE construction. I will then talk about how the evasive LWE assumption can be helpful toward constructing efficient ABE.