Abstract
Mobile ad-hoc networks are wireless self-organized networks in which mobile nodes can connect directly to each other. This fact makes such networks highly susceptible to security risks and threats, as malicious nodes can easily disguise as new trusted nodes and start attacking the network after a certain period of time. Hence, the security of data transmission in MANET has been a hot topic in the past years. Several research works attempted to detect and stop various attacks on MANET nodes and packets. This paper presents an efficient mechanism for secure data dissemination in MANETs. Our approach is based on the identity based cryptography and Message Authentication Code (MAC). The proposed security mechanism prevents malicious nodes from tampering or replaying intermediate packets by means of signing and encrypting the packet at each intermediate trusted node. We tested the efficiency of our system using the ns2 simulator by comparing it to a similar security mechanism. The simulations illustrate that our approach obtains many advantages over other existing approaches for secure data dissemination in MANETs.
Highlights
Over the last years mobile computing and mobile ad hoc networks have rapidly developed and expanded
This paper presents an efficient mechanism for secure data dissemination in Mobile ad hoc networks (MANETs)
In A-secure AODV (SAODV), the encryption and decryption delays were calculated for each instance a node performs an encryption or decryption of the packet payload, and DEtE was calculated similar to HiMAC
Summary
Over the last years mobile computing and mobile ad hoc networks have rapidly developed and expanded. Mobile ad hoc networks (MANETs) are a decentralized type of wireless networks which are basically deployed for the purpose of temporary communication in both normal and adverse situations. Taking into regards the above challenges, a unified security approach that maintains fast and successful communication efficiency is required for data dissemination in MANETs. In this paper, we propose an approach that allows a source mobile node to send a data packet securely to a destination mobile node, while ensuring that the packet was forwarded through trusted intermediate mobile nodes. Trust between nodes depended on the existence of a centralized authority to distribute certificates to the nodes This approach may not work well in MANETs since the assigned trusted third party may leave the network at any time.
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