Performing a secure communication for internet of things applications

With rapidly evolving internet technologies, the use of the Internet and the diversity of connected devices, the use of the internet is no longer limited to devices such as computers, phones and tablets. Smart and Internet-connected devices that we start seeing with the Internet of things (IoT) concept in all areas of life to projects such as smart home appliances, autonomous vehicles and smart cities take not only human-device interaction, but device-device interaction to another dimension. Due to their usage areas, IoT systems, which include the exchange of personal information in most of their applications, are the target of security and privacy threats. The elements that make up these systems vary from powerful computing devices such as desktop computers, tablets, to devices with low resource capacity such as RFID tags and sensors. Especially when it comes to these restricted devices, traditional encryption algorithms cannot provide the necessary security and performance. In the thesis study architecture commonly used in IoT systems, communication technologies, security elements, and drawn attention to potential threats in the literature together with cryptographic solutions IoT system into a new object in the case of join and in the name of solving the problems and lightweight new hybrid approach is presented. It is aimed to disrupt the linearity of the system by performing controlled random waiting with Grain 128a, a lightweight stream encryption algorithm whose reliability is known. The presented approach has been applied in a set-up in accordance with the specified scenario and results are being interpreted.