Cloud database encryption technology based on combinatorial encryption

Abstract

Traditional cloud database directly stores user plaintext information, information security is directly related to the security of Cloud server, which will create a great security risk. The user's information security is not guaranteed. In this paper, a database encryption technology is designed, which can balance the problem of information security and use efficiency well. In this paper, a simplified onion encryption model is designed and implemented, which can realize the full homomorphic encryption on the cloud database to a certain extent, and improve the efficiency of ciphertext operation to a certain extent. Keywords-cloud; database; full homomorphic encryption.