A Productive Model for Secured Data Sharing in Blockchain Technology based IoT

Authentication and access control are critical issues in IoT networks, as these networks comprise a large number of connected devices that exchange sensitive data. One of the biggest challenges in IoT authentication is the lack of uniformity among devices, which makes it difficult to implement a standard mechanism. Additionally, many IoT devices makes implementing robust authentication protocols challenging. Another challenge is the issue of access control, which is critical to ensure that only authorized users and devices can access sensitive data. Access control mechanisms should be implemented at various levels, including the device level, network level, and application level. However, in many cases, IoT devices lack the necessary features to implement advanced access control mechanisms. To address these challenges, IoT manufacturers and developers must prioritize security in their design and development processes. This includes implementing robust authentication and access control mechanisms, ensuring software and firmware updates are timely, and conducting regular security audits to identify and address vulnerabilities. Additionally, IoT devices should be designed with security in mind, and security features should be a core component of the device's design, rather than an afterthought. This work aims to solve the problem of authentication and access control in IoT networks, using Blockchain technology, proposing a consensus algorithm and a trust model between nodes.