A Hybrid Signcryption Approach for Blockchain-Based Secure Communication in IoMT Networks

To safeguard an EHR conversation via empowered device transfers with low encryption and signature overhead, it suggests a HySSA, a small-size BC, and a premeditated structure. HySSA functions in two phases. The first step of the process involves implanting proximity sensor nodes (PSNs) into the patient's body, which will set up a WBAN. The decision of which nearby cluster head (CH) may transmit data including EHR meta-data to the WBAN's GSN rests on the nodes themselves. Second, during its second phase of development, GSN combines data encryption and signing using a lightweight signcryption mechanism that is implemented for approved stakeholders. The data is securely accessed using an interplanetary file system (IPFS) that uses open channels to exchange keys. Storage of data mining findings helps keep computer costs down, and global chain topologies make use of block ledgers. In relationships of computational and communication costs, transaction throughput, and signature and transaction expense factors, the suggested HySSA approach is less expensive than competing schemes. Transaction throughput was 142.78 Mbps, well above the average of 102.45 Mbps. The proposed method is competitive with existing methods in terms of security, with CC of 2.953 ms and CCM of 1980 bytes for 3 messages.