Biblio

Security is one of the more challenging problem for wireless Ad-Hoc networks specially in MANT due their features like dynamic topology, no centralized infrastructure, open architecture, etc. that make its more prone to different attacks. These attacks can be passive or active. The passive attack it hard to detect it in the network because its targets the confidential of data packet by eavesdropping on it. Therefore, the privacy preservation for data packets payload which it transmission over MANET has been a major part of concern. especially for safety-sensitive applications such as, privacy conference meetings, military applications, etc. In this paper it used symmetric cryptography to provide privacy for data packet by proposed modified AES based on five proposed which are: Key generation based on multi chaotic system, new SubByte, new ShiftRows, Add-two-XOR, Add-Shiftcycl.

The paper emphasizes the various aspects of ad-hoc networks. The different types of attacks that affect the system and are prevented by various algorithms mentioned in this paper. Since Ad-hoc wireless networks have no infrastructure and are always unreliable therefore they are subject to many attacks. The black hole attack is seen as one of the dangerous attacks of them. In this attack the malicious node usually absorbs each data packets that are similar to separate holes in everything. Likewise all packets in the network are dropped. For this reason various prevention measures should be employed in the form of routing finding first then the optimization followed by the classification.