Verifiable space keyword query method and device supporting privacy protection

The invention belongs to the technical field of data security, and particularly relates to a verifiable space keyword query method and device supporting privacy protection. The method comprises the steps that a data owner side encrypts a spatial data set of the data owner side, constructs a ciphertext index, and uploads the spatial data set and the ciphertext index to a cloud server side; the query user side generates a search token according to key information and auxiliary parameters provided by the data owner side and submits the search token to the cloud server side; the cloud server side retrieves the ciphertext index according to the search token and returns corresponding space object ciphertext information and verification information to the query user side; and the query user side firstly performs local verification based on the key information, the auxiliary verification information, the space object ciphertext information and the verification information, and then decrypts the space object ciphertex