METHOD FOR PRODUCING AND SEARCHING FOR AN ENCRYPTED COMBINATION DATA WHICH IS SEARCHABLE IN DATABASE

摘要

PURPOSE: A generating method of searchable encrypted combination data and a search method thereof are provided to implement smooth index search by including a header for an index to the combination data. CONSTITUTION: Raw data are encrypted in an index header(S101). The raw data is encrypted in decodable encrypted data(S102). The combination data is generated after combining the encryption data and the index header(S103). The length information of the index header is inserted into the combination data(S104). The encrypted data are encrypted in a standard block algorithm.