Improved acknowledgement intrusion detection system in MANETs using hybrid cryptographic technique

Wireless networks are highly demanding due to its features, like flexibility and scalability. Among all the available wireless networks, MANET has the dynamic topology and it does not have the fixed network infrastructure. Each node acts as the transmitter along with the router. The nodes can communicate with each other either directly or with the help of neighbors. MANET is easily vulnerable to attack due to the open access medium. This paper introduces a hybrid technique to reduce NetworkOverhead, which is caused by the digital signature and provides security to a network. Here hybrid technique of RSA and AES is used, to make the system more secure as RSA algorithm is used to communicate with the receiver through session key and AES algorithm is used to encrypt this session key which makes the key more secure as a result enhancing the security level.