Abstract
In this paper, we propose a solution which can not only satisfy security demands like confidentiality and integrity for data carried during e-transaction, but also solve the bottleneck problem caused by the trusted third party (TTP) due to compromise or unavailability of this party. Applying decentralized approach based on mobile agent (MA) technologies improves e-transaction system by reducing the traffic around administrator management station and alleviates the processing load created by management protocols. Also it improved the performance of the dangerous or real time systems such as a nuclear power plant cooling system and an automated flight control system. However, despite of many advantages of mobile agent, its systems still face a lot of security threats, which restrain the usage of this mechanism. To solve this dilemma we incorporate (RC5) algorithm into our system because of its exceptional simplicity which makes it easy to implement and analyze. Indeed, like the RSA algorithm, the encryption steps of (RC5) can be written on the back of an envelope. (RC5) algorithm is fast, requires low memory and easy to implement. This provides an opportunity for great flexibility in both the performance characteristics and the level of security.