摘要:Wireless Sensor Networks (WSN) are major research area in the past few decades. WSN is formed by collection of sensor nodes. Power source life and memory size limit the hardware sources and these will decide the lifesapn of sensor nodes in WSN. Therefore, many resources based research issues are evolved in WSN. This study focused security issue and proposed authentication system. As the sensor nodes are limited memory, the traditional authentication systems are uncomforted. Hence, secret handshake system using two authorities, namely Issue Authority and Validate Authority are proposed in this study. The proposed authentication system is called as, Secret Handshake Issue and Validate Authority (SHIVA). The proposed methodology is occupying lesser memory space and also reducing number of communication of sensor nodes for the authentication model. Therefore, the proposed methodology proved optimum for WSN.