KEY GENERATING METHOD FOR PREVENTING DICTIONARY ATTACK AND METHOD OF PRODUCING SEARCHABLE KEYWORD ENCRYPTION AND SEARCHING DATA USING THAT

摘要

A key generating method for preventing a dictionary attack, a method for producing searchable keyword encryption using the same, and a data searching method are provided to prevent the dictionary attack by generating the searchable keyword encryption using an index key in a reception side and generating a trap door using a search key in a reception side. A random number is selected according to a security parameter(202). A secret key is generated to be divided into a first secret key for generating the searchable keyword encryption and a second secret key for generating a trap door by using the selected random number(204). A public key for searching the data is generated by using the selected random number(206).