الفهرس 
Efficient Security ProtocolsOnly 14 pages are availabe for public view
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Abstract
A Mobile Ad hoc Network (MANET) is a self organized and self configuring network composed of mobile nodes that are connected wirelessly. MANET has very particular features such as high mobility, multi-hop routing and the absence of any fix infrastructure. The wireless nodes operate as communication end-points as well as routers, enabling multi-hop wireless communication. Many practical applications are being developed for the use of mobile ad hoc networks in both military and civilian environments.
MANETs pose unique challenges, including limited power resources, low computation capabilities, limited storage capacity, less communication bandwidth, and more vulnerable to security attacks. The above mentioned constraints make security a challenge in MANETs.
Key management is a basic part of any secure communication that provides confidentiality, integrity and availability of the network. It supports the generation, distribution, storing, protection, and maintenance of keying material between authorized parties. Key management schemes should achieve robustness, key freshness, forward and backward secrecy, scalability, availability and efficiency. Key management protocols are classified into symmetric, asymmetric, group, and hybrid. group key management is a point of interest for researchers with the growing usage of mobile devices and the rising of multicast communication.
In this research, first, a survey among the well known key management schemes in MANETs will be conducted to evaluate the security strength. Second, a new group key management scheme for MANETs will be proposed. The proposed key management scheme resolves the security holes in the studied schemes, and it is suitable to be deployed in the limited resources MANETs as well. Finally, the performance of the proposed novel scheme will be studied and analyzed in terms of security strength, memory storage, communication overhead, power consumption, simplicity, and scalability.