<?xml version="1.0" encoding="UTF-8"?> <article key="pdf/7025" mdate="2008-12-21 00:00:00"> <author>Pyae Pyae Hun</author> <title>Design and Implementation of Secure Electronic Payment System (Client)</title> <pages>4028 - 4035</pages> <year>2008</year> <volume>2</volume> <number>12</number> <journal>International Journal of Information and Communication Engineering</journal> <ee>https://publications.waset.org/pdf/7025</ee> <url>https://publications.waset.org/vol/24</url> <publisher>World Academy of Science, Engineering and Technology</publisher> <abstract>Secure electronic payment system is presented in this paper. This electronic payment system is to be secure for clients such as customers and shop owners. The security architecture of the system is designed by RC5 encryption decryption algorithm. This eliminates the fraud that occurs today with stolen credit card numbers. The symmetric key cryptosystem RC5 can protect conventional transaction data such as account numbers, amount and other information. This process can be done electronically using RC5 encryption decryption program written by Microsoft Visual Basic 6.0. There is no danger of any data sent within the system being intercepted, and replaced. The alternative is to use the existing network, and to encrypt all data transmissions. The system with encryption is acceptably secure, but that the level of encryption has to be stepped up, as computing power increases. Results In order to be secure the system the communication between modules is encrypted using symmetric key cryptosystem RC5. The system will use simple user name, password, user ID, user type and cipher authentication mechanism for identification, when the user first enters the system. It is the most common method of authentication in most computer system.</abstract> <index>Open Science Index 24, 2008</index> </article>