Secure authentication and key management based on hierarchical enhanced identity based digital signature in heterogeneous wireless sensor network

Nowadays, secured data transmission has become the most desired need for all networks. Ensuring secure authentication and data transmission in the network is a significant and important task in a heterogeneous wireless sensor network (HWSN). Even though several models are adopted in the network, offering secure authentication and sustaining the energy along with key management is still considered a major problem in the research community. Thus, in this paper, a novel energy efficient clustering and routing algorithm is proposed based on the Hierarchical enhanced identity based digital signature (Hierarchical-EIDS) algorithm in HWSN. Initially, an efficient clustering and cluster head (CH) selection are performed using a fuzzy transient search algorithm (FTSA) in order to play a significant role in energy consumption. In the next stage, adaptive Aquila optimization (AAO) has been introduced to define the optimal route for efficient data transmission. To overcome the mutual authentication, bilinear pairings, and public key generation, a Hierarchical-EIDS scheme is applied. Here, the homomorphic equilibrium (HE) algorithm is employed to generate a key for a particular sensor node (SN). The proposed method is implemented in MATLAB, and a comparative analysis has been carried out to determine the efficacy of the model. As a result, the proposed method accomplishes better performance in terms of security strength (0.08 per packet), average energy (AE) consumption (8.861 J), average end-to-end (AEE) delay (0.344 ms), and key length (1900 character). The acquired results outperform the existing models and prove their effectiveness.