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Mobile Ad-hoc NETwork is wireless network, composed of different nodes communicate with each other without having to establish infrastructure. In this paper, technique proposed to provide the data security of such network using node authentication and digital signature. In this paper, the authors discussed some previous methods for identifying malicious node, there was no such method to authenticate the new node before it joins the network. This new protocol design provides the integrity, confidentiality, non repudiation and authentication with the help of AES, and digital signature. The node authentication achieved by the IP address of the nodes. Digital signature formed with the help of RSA and hash function MD-5.
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