Wireless Sensor Network (WSN) is a particular network built from small sensor nodes. *ese sensor nodes have unique features.
*at is, it can sense and process data in WSN. WSN has tremendous applications in many fields. Despite the significance of WSN,
this kind of network faced several issues. *e biggest problems rising in WSN are energy consumption and security. Robust
security development is needed to cope with WSN applications. For security purposes in WSN, cryptography techniques are very
favorable. However, WSN has resource limitations, which is the main problem in applying any security scheme. Hence, if we are
using the cryptography scheme in WSN, we must first guarantee that it must be energy-efficient. *us, we proposed a secure
hybrid session key management scheme for WSN. In this scheme, the major steps of public key cryptography are minimized, and
much of the operations are based on symmetric key cryptography. *is strategy extensively reduces the energy consumption of
WSN and ensures optimum security. *e proposed scheme is implemented, and their analysis is performed using different
parameters with benchmark schemes. We concluded that the proposed scheme is energy-efficient and outperforms the available
benchmark schemes. Furthermore, it provides an effective platform for secure key agreements and management in the
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