ABSTRACT
Securing code dissemination is essential for many crucial military applications. Suppose the nodes are deployed in the military areas, the border sensor nodes are the more sensitive nodes. The border sensor nodes need to do some special tasks compared to other intermediate sensor nodes. So the code dissemination to be sent to the border nodes will be different from that of intermediate nodes. Thus, the code dissemination that needs to be sent to the border sensor nodes should be highly confidential. The confidentiality of this code dissemination cannot be compromised at any cost, hence Key management is also an important issue. A protocol is developed to securely send the code dissemination to the border sensor nodes via intermediate nodes. The Protocol is implemented using nesC on TinyOS platform and evaluated the performance.
