Multicast communication is the main mode of communication for a wide range of Internet services such as video broadcasting and multi-party teleconferencing where there are multiple recipients. A secure multicast system allows a group initiator (or a centre) to send message over a multicast channel to a dynamically changing group of users. The main challenge in secure multicasting is efficient g...

A mobile ad hoc network is an autonomous system of mobile nodes connected by wireless links. The nodes are free to move about and organize themselves into a network. For many application of MANET we need to establish secure group communication between members of groups. Some of the protocols to generate group key have been surveyed, and then their comparison is given based on the fact that if w...

Security policy is increasingly being used as a vehicle for specifying complex entity relationships. When used to define group security, policy must be extended to state the entirety of the security context. For this reason, the policy requirements of secure groups are more complex than found in traditional peer communication; group policies convey information about associations greater and mor...

Key management plays a very important role in the data communications. CBCEGKM is a key management scheme that provides more efficient and secure methods for key generation and utilization. This papers deals with the analysis of CBCEGKM with respect to communication overhead, computation cost, etc. The analysis shows that CBCEGKM comprises of the most reliable methods for key generations and he...

Securing group communications in dynamic and large-scale groups is more complex than securing one-to-one communications due to the inherent scalability issue of group key management. In particular, cost for key establishment and key renewing is usually relevant to the group size and subsequently becomes a performance bottleneck in achieving scalability. To address this problem, this paper propo...

QoS is the presentation level of service presented by a network to the user. The objective of QoS is to accomplish more deterministic system activities so that the information conceded by the network can be better conveyed and the resources can be better employed. QoS routing and security is the process of offering continuous free paths to guarantee the required QoS parameters. The security of ...