Design of a Secure Transmission System for Secure Key Injection During Initialization Phase of IOT Devices

Abstract

In the last decade society has experienced an exponential growth in the number of devices connected to the Internet. Recently, new gadgets called Internet of Things devices have appeared in our homes. Although they often lack a physical interface to directly interact with them, they are able to read information from sensors and autonomously communicate with servers, performing decisions accordingly. However, most of the domestic devices that are being commercialized do not implement strict security policies, potentially leading to security breaches that compromise the user’s privacy. The following work provides an alternative to the WPS technology in the initial setup phase of these devices, in which the gadget has to be loaded with the Wi-Fi key so it can connect to the Internet. The use of infrared technology implementing a Diffie-Hellman key exchange protocol to inject this key makes the process much safer, without compromising the cost of the device or the user experience.