Implementation Of Data Encrytion In ERP System Based On Permutation Code Algorithm

After analyzing the security status and requirement of ERP System, the thesis give the security model and appoint that the data security is the key of security of ERP system. Data security includes security in storage and security in transfers. Because the technology in data transfers is already mature (such as VPN), the aim of this article is to solve the problem of security in storage and combine the technology of encryption and the technology of database, which is a effective way of realizing database information security.In respect to Cipher Database System configuration design, we adopt encryption mode out of DBMS, and accomplish identification and data encryption etc., through adding encryption management program in client, and security deputy program between application and DBMS.As regards cryptographic algorithm, according to database encryption requirement for cryptosystem, we adopt permutation code algorithm, which is high intensity and fast, based on analyzing and comparing several popular cryptographic algorithm.Key management is critical technique of realizing database encryption. In this dissertation, we make improvement of Two-Phase key management scheme according to the matter of fact. The work key is generated by Key Generation Function, which guarantee the security of system and reduce the storage of database.Cipher Message Database on ERP System based on this dissertation is an important sub-system of ERP System. It's of simple construction, and implement method is convenience, resolving the security problem of important information, and it worth some reference value to developing database security and secret system in ERP.