Design And Implementation Of Customer Reserve Fund Deposit System Based On MD5and DES

There are250third-party payment institutions which have got the license by February2014. In order to prevent third parties from misappropriating customer reserve fund illegally and ensure the customer fund safety,the central bank release Regulation of the customer reserve fund deposition in June,2013. The regulation is released from the model of customer transactions funds deposition for Security Company. The Regulation asks the third-party payment institutions to deposit the customer reserve fund within the institutions.This paper describes aspects of the third-party payment institution, such as development process, development situation, characteristics of the industry as well as some problems in supervising. Introduce the domestic status quo of bank cards payment, the business process of the Bank card payment system, bank card acquiring business process systems and development of the reserve business. The significant purpose of developing this system are discussed.To ensure customers reserve fund system safety, using Message Digest5to get the digest of the whole information pack when saving the code with which administrator or other staffs login in the system and checking the key words in the message. The key words in the batch file which will be sent to other institution are encoded with the Data Encryption Standard encryption algorithm,Give a brief description of MD5and DES used in this system for security, analysis the problems of these two algorithms in terms of safety, and put forward corresponding measures to resolve the problems. The algorithms improved will be safety algorithms to some attack, they can-ensure the safety of the system.According to the relative provision of Regulation of The Customer Reserve Fund Deposition issued by the Central Bank and the business of this system, doing more research and analysis to it, understanding the requirements of this system in terms of functional and non-functional aspect. Based on analysis of the system and the research of the security algorithms, making detailed design to the system. Introduce the overall structure of the system by presenting the deployment view and logical view. Functional modules including the management modules, clearing and checking module of the system are also designed in detail. Finally the design and implementation of interface security communication are described. By doing all of these, a desirable and security reserve fund deposit system is built eventually.