Generic Construction of Dual-Server Public Key Authenticated Encryption with Keyword Search

ePrint Report: Generic Construction of Dual-Server Public Key Authenticated Encryption with Keyword Search

Keita Emura

Chen et al. (IEEE Transactions on Cloud Computing 2022) introduced dual-server public key authenticated encryption with keyword search (DS-PAEKS), and proposed a DS-PAEKS scheme under the decisional Diffie-Hellman assumption. In this paper, we propose a generic construction of DS-PAEKS from PAEKS, public key encryption, and signatures. By providing a concrete attack, we show that the DS-PAEKS scheme of Chen et al. is vulnerable. That is, …

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