Lattice-based Public Key Encryption with Authorized Keyword Search: Construction, Implementation, and Applications

ePrint Report: Lattice-based Public Key Encryption with Authorized Keyword Search: Construction, Implementation, and Applications

Shiyuan Xu, Yibo Cao, Xue Chen, Yuer Yang, Siu-Ming Yiu

Public key encryption with keyword search (PEKS), formalized by Boneh et al. [EUROCRYPT' 04], enables secure searching for specific keywords in the ciphertext. Nevertheless, in certain scenarios, varying user tiers are granted disparate data searching privileges, and administrators need to restrict the searchability of ciphertexts to select users exclusively. To address this concern, Jiang et al. …

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