Lamport Timestamp Digital Signature based Mutual Node Authentication for Secured Data Communication IN WSN

Antony Cynthia and Dr.V. Saravanan

Authentication is the significant security services in WSNs for guaranteeing secure data communication. The node authentication guarantees that only authorized node can access the data. The major concern for the widespread application of WSNs is the lack of communication security. In order to improve the security of data communication, Lamport Timestamp Digital Signature based Mutual Node Authentication (LTDSMNA) Scheme is introduced. The main aim of LTDS-MNA scheme is to improve the security of data communication in WSN with higher authentication accuracy. The LTDS-MNA scheme comprises two phases, namely the registration phase, and authentication phase. Initially, all the sensor nodes in WSN have to be registered in order to perform data communication. In the registration phase, the sink node generates its own keys and also generates key pairs (i.e. private and public key) for all registered sensor nodes in the network. During data communication, the sensor nodes need to be authenticated based on signature and node ID generated by sink node for improving the security level on data communication. The sink node uses Lamport Digital Signature Verification Algorithm is applied for signature verification. When the signature verification is successful, the node is said to be authenticated sensor node. After that, the receiver node verifies their authenticity to the sender node for secure communication. When the receiver sensor node is authenticated node, data communication is carried out. Otherwise, the sensor node does not send the data to the receiver node. In this way, the mutual authentication between the sender and receiver node is performed for transmitting the data packets. This, in turn, helps to improve the security level. The simulation is carried out on factors such as authentication accuracy, authentication time, and security level with respect to a number of sensor nodes and data packets. The observed result shows that the LTDS-MNA scheme improves the security level, authentication accuracy and minimizes the authentication time as compared to state-ofthe- art-works.

Volume 12 | 04-Special Issue

Pages: 402-413

DOI: 10.5373/JARDCS/V12SP4/20201504