Blockchain-enabled Zero Trust-based Secure and Energy Efficient scheme for 6G-enabled UASNs

Marine networks such as the Underwater Acoustic Sensor Network (UASN) are the backbone for the exploration and monitoring of marine environments. These sensor nodes are deployed in extremely harsh underwater conditions, which are prone to various problems, including safety threats and energy drain. However, with their dramatic significance in multiple aspects, solutions for ensuring secured and efficient communications of these networks become essential. Herein, we put forth a new scheme termed Blockchain-enabled Zero Trust-based Secure and Energy Efficient (BZTSEE), where blockchain and a zero trust notion have been worked together into UASNs whose communications are enabled through 6G. BZTSEE works on identifying security and privacy issues while providing an energy-efficient solution. Using blockchain ensures secure and trustworthy communication, transparency in data sharing, maintenance of trust among nodes, and protection of user privacy. The scheme uses a PBFT protocol to defend itself against malicious actions and keep data secured. Several simulations show how BZTSEE works well under diverse conditions, including the number of nodes and attacks. The results render it quite effective for both small and large UASNs. In short, BZTSEE considerably augments the aspects of security, privacy, trust, and energy savings-a perfect fit for future UASNs.