| The ERP(Enterprise Resource Planning) is an enterprise resource management system which conformities business management idea,service flow, foundation data, manpower, physical resource, and the computer hardware and software. It is widely adopted in the current enterprise. So, the security of ERP is also arousing the more and more people's interest. How to take the powerful security measure to safeguard the information security of enterprise is becoming the question which ERP system must solve.The main point of the issue is the information security based on the ERP system. After analyzing the security characteristics of ERP system ,security technique applied in the ERP and security question in the ERP system, we put forward the mixed method that adopts RSA and permutation code to ensure the safety of enterprise information.First of all, this paper introduces the background and practical sense of ERP encryption. Then introduces the concept and development of ERP simply, and analyses the security problem of ERP at present, the measure which needs to adopt is also put forward. After that, explain the RSA algorithm and the permutation code algorithm, and discuss the realization of the two algorithms in detail. At last, we use case analyses and design according to the software development under VC 6.0 integrated development environment to design the subsystem of ERP-personnel management system. We apply the mixed algorithm successfully into the system.Considering the respond speed of the system, this paper uses RSA to encrypt the customer information. The customer logs on the system using the registered name and the password which can generate a paired key randomly. This paired key encrypts the customer information. We adopt n=4 permutation code to encrypt the system data. The excellence of permutation code is the encryption speediness, encryption intensity etc. On the key management side, we adopt the two-level key management system which uses the RSA to encrypt the key of permutation code. According to the encryption design and realization of the personal management system of ERP, the mixed method based on RSA and permutation algorithm has such characteristic as simple realization, high intensity encryption. So, we can make a conclusion that the mixed method has a certain applied foreground. |
