International Journal of Network Security
As cloud computing is increasingly expanding its application scenario, it is vital for cloud storage customers not to sacrifice the confidentiality of sensitive data while making fullest use of operational functionality of cloud secure systems. Although traditional searchable encryption can well solve exact keyword search on encrypted data with retrieving les by search interest, it does not work when typos or misspelling mistakes occur. Many specific algorithms have been well proposed to solve this difficult problem. However, most of the schemes mainly focus on the single cloud to achieve fuzzy keyword search, which means that fuzzy-keyword index construction must take possible typos into account and makes existing exact-keyword index useless.