Research And Design Of Network Database Security Model Based On CAS System

As network informatization coming,the amount of information produced in social production and life has soared,database technology has developing rapidly.In the developing of database technology,how to store more data and how to ensure the security of information storage has become a hot topic and focus of research.As the key development direction of database technology,network database can store massive amounts of data more conveniently,but it has higher security performance requirements than traditional database systems.In the network database system,the frequent occurrence of security threats caused by internal management personnel violations of user sensitive information has become a key issue that network database security technology needs to solve.This paper focuses on the internal violations of network database administrators,which poses a security threat to user sensitive information.It analyzes various security threats and security schemes in network database,and deeply studies network database access control technology,chaotic cryptography and CAS single sign-on system.According to these technical proposal,this paper proposed and implemented a kind of network technology security model.And for the functional requirements of the model,designed a kind of encryption algorithm based on Logistic-Henon chaotic system.At the end of the paper,the database model and algorithm scheme has analysis and evaluation.The specific research results are as follows:(1)This paper mainly studied the design of network database model,network database security threat and security technology,database access control technology,and analyzed the chaotic model and CAS single sign-on technology applicable to network database.(2)To prevent the replay attack against identity authentication and the threat of internal violations in the network database,this paper proposed an encryption algorithm based on Logistic-Henon chaotic system.Under the premise of guaranteeing the performance of the algorithm,the algorithm can iteratively generate the random ticket Service Ticket for user identity authentication,and generate the subkey with the user root key.Used by symmetric encryption algorithms.(3)In order to threaten the violations of internal personnel in the network database,this paper proposed a network database security model based on CAS system.After analysis and verification,the scheme can avoid the violation of the internal data management personnel of the network database and threaten the security of the user sensitive data information,and at the same time protect against most attacks against network database security.(4)This paper implemented the program about the Logistic-Henon encryption algorithm and network database security model.It has been verified that the algorithm is reliable and the network database system can meet the demand.