Secured Path For Message Transmission In Group Network Using Elliptic Curve Cryptography

The main constraint in message transmission is security. The key must be shared among users so that we have a secure transmission in group based message transmission. In this paper we discuss an important security problem that happens in mobile ad hoc network for key agreement in dynamic group. For a communication to be secure, a group key must be shared by all the members of the group. The key must be updated when any member of the group leaves existing group or become a new member of the existing group. In this paper, we establish a secured transmission. The main idea here is to spilt the existing network into smaller sub-network   and each sub-network maintains its own keys. These keys should be updated when a existing node leave the network or when an new node joins the existing system. The nodes that have the high stability in the sub-network will be made as the Inner gateway member and among Inner gateway member the one that has high stability will be made as Outer gateway member.