Design of an extended privacy homomorphism algorithm

In the paper, an extended privacy homomorphism algorithm is designed first, and then its application system is constructed too. Moreover, performance of the extended algorithm is tested perfectly by experiments on the safe application system. Anyhow, besides providing the safe access service of the database information to ensure data confidentiality, integrity, availability, consequently, and guaranteeing the legal rights and interests of the owners and users, the new algorithm can ensure the security of database of application system, at the same time it can improve the speed of index and selection on the encrypted database directly without decryption, so the extended privacy homomorphism algorithm has an practical significant business prospect on safe application system especially (such as information system, emergency system, on-line computation system and data mining) on the Internet of Things.