Security protocols for Internet of Things: A survey

Internet of Things (IoT) is made up of various technologies, which supports advanced services in various application domains. Security and privacy are a very important aspect for IoT application domains. These applications require data confidentiality, authenticity, integrity and access control within the IoT network. For users and things, security is achieved by enforcing the security and privacy policies. Due to the different standards and communication stacks involved in traditional security solutions, it cannot be directly applied to IoT technologies. In IoT number of interconnected devices is expected to increase tremendously hence scalability is the biggest challenge for IoT development. This survey paper presents the available security protocols at respective IoT layers. A comparison of this information is done with respective to various security aspects and research gaps are identified.