Open AccessDesignated Cloud Server Public Key Encryption with Keyword Search from Lattice in the Standard Model
Author(s) -
Zhang Xiaojun,
Xu Chunxiang,
Xie Run,
Jin Chunhua
Publication year - 2018
Publication title -
chinese journal of electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.267
H-Index - 25
eISSN - 2075-5597
pISSN - 1022-4653
DOI - 10.1049/cje.2018.01.012
Subject(s) - encryption , delegate , computer science , ciphertext , cloud computing , keyword search , proxy re encryption , cryptographic primitive , cryptography , cloud storage , standard model (mathematical formulation) , key (lock) , learning with errors , theoretical computer science , computer security , cryptographic protocol , information retrieval , operating system , history , archaeology , gauge (firearms) , programming language
Recently, how to retrieve the encrypted data efficiently from a cloud storage system becomes a hot topic. Public key encryption with keyword search (PEKS) can allow one to search the encrypted data with a keyword efficiently. Due to the booming of post‐quantum cryptography, we propose public key encryption with keyword search from lattice assumption, which can resist quantum computer attacks. We delegate a particular cloud server to search the results, thus only the designated cloud server can finish the test process. Our scheme has been proved ciphertext indistinguishability in the standard model, which can reflect its security in the real world. To the best of our knowledge, our scheme is the first construction based on lattice in the standard model, which is a step stone in the post‐quantum cryptographic communication.