Research On Database Security Technology Based On Web

With the development of network and computer technology, the powerful network has enriched our lives, but it also brings a lot of dangers. Now Web applications usually use database to manage and store a lot of information. In order to protect user privacy, database security has become a very important research.Aimed at the problem of database security based on Web, identity authentication technology, access control technology, data filtering technology, encryption algorithm, keys management technology and data management technology were studied and analyzed. A database security model based on Web was proposed. On the basis of this studies, the database security model based on Web was implemented. The model was effectively evaluated, which proved the availability and security of this model.The main studying contents and results of this paper are as follows:(1) The database security technology was studied. The database's security and threats, database security management technology, data encryption technology and MySQL database's security mechanism were mainly introduced.(2) A database security model based on Web was proposed. Identity authentication technology, rights management technology, data encryption technology, keys management technology and data management technology were studied in depth.(3) The core algorithms of database security model based on Web was studied and designed. Algorithms for verifying user identity and authority were designed. The data was classified and ciphertext was matched and searched. Two level key management method was used to manage the keys. Algorithms for searching and updating keys were designed. The algorithm for checking data was designed.(4) Based on the aviation safety officer training certificate management system, the database security model based on Web was designed and implemented. Including the access control layer, data encryption and decryption layer, key management layer and data management layer. The model was evaluated and the result shows that the model have good security. The model and system also be valuable to the database security.