ENCRYPTED INDEX BASED RANGE QUERY PROCESSING METHOD AND RANGE QUERY PROCESSING SYSTEM

摘要

An encryption index-based area query processing method and an area query processing system are disclosed. The encryption index-based area query processing method according to an embodiment of the present invention includes the steps of generating an encryption index tree by encrypting an index tree, encrypting the encryption index tree with an encryption database and a first cloud Storing a decryption key corresponding to the encryption key in a second cloud different from the first cloud; and transmitting, when a user query is received from the authenticated terminal, And performing a Secure Multiparty Computation (SMC) between the first cloud and the second cloud to process the user query.