Efficient multi-keyword ranked query over encrypted data in cloud computing

Ruixuan Li, Zhiyong Xu, Wanshang Kang, Kin-Choong Yow, Cheng-Zhong Xu

Abstract: Highlights•Design a novel storage and encryption algorithm to manage the keyword dictionary.•Greatly reduce both the dictionary reconstruction overhead and the file index re-encryption time as new keywords and files are added.•Design a novel trapdoor generation algorithm.•Take the keyword access frequencies into account when the system generates the ranked list of the returning results.