الفهرس 
SOFTWARE AGENTSOnly 14 pages are availabe for public view
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Abstract
The rapid progress in the field of computer networks, internet and the tremendous growth of networks using centralized approach causes some problems like security threats, traffic load, bandwidth limitation and performance degradation. The traditional solutions such as antivirus firewall…etc., provide security to some extents, but they still face a lot of challenges, gradually failing to provide the required protection for these systems, especially for decentralized and e-transaction systems. There is therefore an urgent need to develop a new model to successfully create a safety system suitable for many applications like electronic transactions and decentralized systems, which have strategic and important national dimensions, and contribute to the development and provision of needs in many countries. This thesis firstly presents a new secure e-transaction system based on mobile agent technology, with flexibility to be applied on many e-transaction applications like egovernment, e-commerce and various decentralized applications. It allows the agent host to delegate his signing power to an anonymous mobile agent. The mobile agent does not expose any information about its host’s identity, and can in the same time, still be authenticated by the service host. This is important to achieve and ensures the equity property of service provision. The proposed model incorporates some methods and schemes like RSA digital signature scheme, Chaum’s blind signature and cross validation theory. One of the most important features of the proposed model is that, in addition to allowing secure and anonymous signature delegation, it enables the agent host to validate the requested deal or the product conducted or paid for. Also, it offers a countermeasure mechanism by dealing with malicious mobile agents during an attack. Secondly, this thesis also presents a novel approach for building secure decentralized Micro energy with remote monitoring based on Mobile Agent System (MEMAS). The approach is efficient and suitable for remote rural areas with poor infrastructures like Sinai Peninsula in Egypt. It secures a source of sustainable energy supply for remote rural areas. Moreover, it will also increase the overall system life time by detecting any misuse by the end user, and by also applying urgent required actions remotely, in order to protect its components and enable a secure remote transfer and analysis for the operation data.