Energy consumption evaluation of SAODV with trust management scheme under gray-hole attacks

Mobile ad-hoc networks allow communication between mobile nodes without the existence of an infrastructure, so they are adaptable also in hostile environments. Using the wireless communication leads to a lack of security. Due to the characteristics of mobile nodes, they have batteries as power source, so their energy is constrained. A routing protocol for MANETs has to take into account this constraint, limiting the amount of used energy. Introducing security measures to protect the network against malicious nodes has an impact on the energy amount required to nodes. To improve security of the network, there are already proposals that use cryptography to secure routing packets. In this contribution, a trust management system is introduced into the well-known protocol SAODV, to protect the network against effective attacks not protected by that protocol. The proposal is evaluated using gray hole attack and comparing performances and energy consumption between the SAODV with and without Trust Management Scheme.