International Journal of Computer Applications
An efficient and secure group communication in Mobile Adhoc NETwork (MANETs) has brought attention to many security issues. In this paper, the authors propose energy efficient dynamic core based multicast routing protocol to establish the path between the nodes that participate in group communication. During the routing process each node computes a pythagorean triple and constructs a Pythagorean Triple Tree (PTT) to generate a contributory key. Each node computes a pair of keys which will be exchanged among the nodes to compute group key for secure group communication.