Preeti Nagrath

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A Mobile Ad Hoc Network (MANET) is a self-organizing, infrastructure less, multi-hop network. The wireless and distributed nature of MANETs poses a great challenge to system security designers. Ad hoc networks are by nature very open to anyone. Their biggest advantage is also one of their biggest disadvantages: Anyone with the proper hardware and knowledge(More)
Dynamic nature of adhoc networks leads to challenges in securing the network. Due to vulnerable nature of adhoc networks there are many security threats. Much work is going on to provide security to the network. One of the solution to the problem is ARAN – Authenticated routing protocol which is a Anonymity but an authenticated selfish node can infer to(More)
Ad hoc network allow nodes to communicate beyond their direct wireless transmission range by introducing cooperation in mobile computer (nodes). Many proposed routing protocol for ad hoc network operate in an ad hoc fashion, as on demand routing protocol often have low overhead and faster reaction time than other type of routing based on periodic protocol.(More)
Digital watermarking is referred to a method used for copyright protection and authentication. In this paper, we present a method of nested digital watermark embedding and extraction in which a nested watermark (a watermark inside another watermark) is embedded into the main image. This concept of nested watermarking is used to increase the watermark(More)
Probabilities and social behaviour are two common criteria used to route a message in disruption/delay tolerant network wherein there is only intermittent connectivity between the nodes. In this article we first discuss how the characteristics of these routing algorithms can be exploited by a malicious node to attract data packets and then dropping them to(More)
The research mentioned in this treatise summarizes the counter measures for the issues relating to bus transport system which exists within the present systems. The issues namely being, revision of existing bus routes regularly with an autonomous approach on the basis of population density heat map and the lack of dynamic bus allocation on suggested routes(More)
The research mentioned in this treatise proposes two hybrid approaches towards social networking in delay tolerant networks. The base assumed for the proposals is derived from the BUBBLE Rap forwarding which utilizes a greedy approach for providing a concrete social networking strategy. The proposals take the form of incorporation of knowledge based(More)
Delay Tolerant Network (DTN) is basically a disconnected mobile ad hoc Network. It is intermittent and sparsely connected because of limited transmission range and mobility. It is characterized by intermittent connectivity, long or variable delay, asymmetric data rate and high error rates. Many malicious nodes misbehave to hamper the network. Shielding(More)
Delay tolerant networks (Barun Saha, http://delay-tolerant-networks.blogspot.in ) are the networks that address the technical issues in heterogeneous network that may lack continuous network connectivity. A message is forwarded to a node if it has higher delivery predictability than the current node for that particular destination. But there obviously(More)