Abstract: Spontaneous wireless network is a scheme consists of ad hoc networking in which devices establish communication with nearby devices with anytime and anywhere without using any backbone network. The notion of ad hoc networks was often associated with communication on combat fields and at the site of a disaster area. It is a self-configured network for that we have to provide some basic services and application. To achieve this, authentication of devices is must. In this paper a secure protocol for spontaneous wireless ad hoc networks which uses an encryption scheme and the trust between users in order to exchange the initial data and to exchange the secret keys that will be used to encrypt the data. The protocol includes all functions needed to operate without any external support. Attacker node may send data which disturb the network. Main focus of paper is describes secure protocol with enhance security for spontaneous wireless ad hoc network.

Keywords: spontaneous network, wireless ad hoc networks, secure protocol, authentication.