Secure and Efficient CoAP Based Authentication and Access Control for Internet of Things (IoT)

Internet of Things (IoT) is growing as an attractive system paradigm. There is a lot of hype around the internet of things (IoT) and it continues to evolve as we move beyond humans talking to machines. IoT has interconnections through the physical, cyber and social spaces. Things used in IoT are sensors and actuators, mechanical devices and network-ing includes gateways, wireless infrastructure. Most of devices among them are resource constrained. During the interaction betweendevices, IoTgetssufferedfromseveresecuritychallenges. Complicated network produces potential vulnerabilities referred to heterogeneous devices, sensors and backend systems. So to realize the dream of internet of things secured device to device communication is expected. Security of resource constrained networks becomes prime important. Many existing mechanisms gives security and protection to networks and systems but they are unable to give fine grain access control. In this work, we focused on CoAP based framework to give service level access control on resource constrained devices. It gives fine grain access control on a per service basis. ECDSA is used to improve privacy of the system. Performance of CoAP based framework is compared and analyzed with existing security solutions. Test results are presented which shows that communication overhead and authentication delay are less than the existing system. Hence security performance of system gets improved. The goal is to present comprehensive security framework for low power networks consist of resource constrained devices.