Because of the widespread use of mobile devices and the introduction of multicast communication, significant effort has gone into establishing an optimal group key management protocol for mobile multicast systems and MANETs. For both wired and wireless networks, key management is frequently used to secure group communication. Securing group communication on wired networks is well established; but, due to member mobility and the growing number of members, a wireless network poses additional issues. They are divided into two categories: network-dependent and networkindependent protocols, as well as tree-based and cluster-based key management system

Communication, Establishing, Network, Protocols.