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cs.CR2026
Ciphertext-Policy ABE for Circuits with Constant-Size Ciphertexts from Succinct LWE
Jiaqi Liu, Yuanyi Zhang, Fang-Wei Fu
We construct a lattice-based ciphertext-policy attribute-based encryption (CP-ABE) scheme for access policies with constant-size ciphertexts. Let be the securit…
cs.CR2025
Decentralized Multi-Authority Attribute-Based Inner-Product Functional Encryption: Noisy and Evasive Constructions from Lattices
Jiaqi Liu, Yan Wang, Fang-Wei Fu
We study multi-authority attribute-based functional encryption for noisy inner-product functionality, and propose two new primitives: (1) multi-authority attribute-based (noisy) in…
cs.CR2023★ 1 cited
Learning with Errors over Group Rings Constructed by Semi-direct Product
Jiaqi Liu, Fang-Wei Fu
The Learning with Errors (\LWE) problem has been widely utilized as a foundation for numerous cryptographic tools over the years. In this study, we focus on an algebraic variant of…