A Lattice-Based Public Encryption with Key Search Scheme for Wireless Sensor Networks

With the rapid progress in technology, wireless sensor networks (WSNs) have attracted people's interest in the research community. However, due to the limited node communication and computing power, the traditional public key encryption algorithm can't be effectively applied. And as step into post-quantum era, pairing related assumption is fragile. Lattice is an ideal choice for building secure encryption scheme against quantum attack. Based on this, we propose a public encryption with key search scheme from lattice for wireless sensor networks. Compared with the existing public searchable encryption algorithm, the proposed encryption algorithm requires less computation time and achieves more security level.