Key Pre-distribution Based on Block Complementation Design in Internet of Things Security

The Internet of Things is a network of smart devices that can connect and exchange data with other things. Due to the heterogeneous nature of IoT devices and constrained resources, creating a secure connection between IoT devices is very important. The use of previous algorithms for encryption, such as RSA and AES, involves complex and heavy computation and is unsuitable. Therefore, lightweight encryption methods are required. This paper presents a new and essential pre-distribution scheme proposed to attain high security. This scheme is based on a design derived from combinatorial algebra, namely the residual design. According to this scheme, each device in IoT will have a set of keys called the key ring from a key pool assigned to it. It should be noted that the residual design that is built from block complementation is being used in the IoT for the first time. A basic mapping from residual design to key pre-distribution is illustrated. Another advantage of this approach is improving the IoT resilience while maintaining high scalability. The evaluations performed indicate that our approach leads to an improvement in secure connectivity and an increase in IoT scalability with high resilience.