Abstract
The secure transmission of data within a network has received great attention. As the core of the security management mechanism, the key management scheme design needs further research. In view of the safety and energy consumption problems in recent papers, we propose a key management scheme based on the pairing-free identity based digital signature (PF-IBS) algorithm for heterogeneous wireless sensor networks (HWSNs). Our scheme uses the PF-IBS algorithm to complete message authentication, which is safer and more energy efficient than some recent schemes. Moreover, we use the base station (BS) as the processing center for the huge data in the network, thereby saving network energy consumption and improving the network life cycle. Finally, we indirectly prevent the attacker from capturing relay nodes that upload data between clusters in the network (some cluster head nodes cannot communicate directly). Through performance evaluation, the scheme we proposed reasonably sacrifices part of the storage space in exchange for entire network security while saving energy consumption.
Highlights
Wireless sensor networks (WSNs) can be applied in military, traffic management, smart healthcare, and smart homes, etc. [1]
We propose a key management scheme for heterogeneous wireless sensor networks (HWSNs)
[19] The public key of each node in our optimized pairing-free identity based digital signature (PF-IBS) algorithm is related to IDi, which is more conducive to identity authentication
Summary
Wireless sensor networks (WSNs) can be applied in military, traffic management, smart healthcare, and smart homes, etc. [1]. Key management can provide secure communication keys for information transfer between network nodes to ensure message confidentiality, integrity, and authentication, etc. Sensor network nodes are limited in terms of storage space, computing power, and energy reserves. Considering the problems of large storage space, high computational complexity, and high energy consumption, traditional public key encryption algorithms were not Sensors 2020, 20, 1543; doi:10.3390/s20061543 www.mdpi.com/journal/sensors. We propose a key management scheme for heterogeneous wireless sensor networks (HWSNs). Our scheme uses the pairing-free identity based digital signature (PF-IBS) algorithm to complete identity authentication. This algorithm ensures the security of the key establishment process, and saves energy.
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