Based On Oracle8i Network Ciphertext Database Study

Encrypted database is an effective technique to strengthen the security of Database Management System. In this paper, measures to ensure database safety and research about Encrypted database are presented firstly. Then, cryptography used in encrypted database system is discussed; the qualification of encrypted database is presented; advantages and disadvantages of two kinds of architecture and scheme are analysed; encryption granularity, key management, ciphertext index, mandatory access control, encryption dictionary and integrity restriction are studied; methods to realize encrypted database based on Oracle8i are studied. At last, the transformation from WS9 CAT Database to encrypted database is realized and a wizard is coded to help people design encrypted database.