Ciphertext Query Method Based on Multi-Attribute Keywords

Following the widespread application of cloud computing, many users outsource local data to cloud server. Users encrypt their data before outsourcing makes the traditional query method failure. Aiming at the problem of slow query speed and low accuracy of ciphertext query, an improved ciphertext query method based on multi-attribute keywords is proposed through the research of existing ciphertext query technique. The method establishes security index through multi-attribute characteristic vector, it conducts correlation calculation according to the sort order selected by users and multi-keyword, and returns the most relevant sorted query result. Research result shows that the method improves query speed and accuracy of the query result.