Automatic Key Update Mechanism for Lightweight M2M Communication and Enhancement of IoT Security: A Case Study of CoAP Using Libcoap Library

Abstract

The ecosystem for an Internet of Things (IoT) generally comprises endpoint clients, network devices, and cloud servers. Thus, data transfers within the network present multiple security concerns. The recent boom in IoT applications has accelerated the need for a network infrastructure that provides timely and safe information exchange services. A shortcoming of many existing networks is the use of static key authentication. To enable the use of automatic key update mechanisms in IoT devices and enhance security in lightweight machine-to-machine (M2M) communications, we propose a key update mechanism, namely, double OTP (D-OTP), which combines both one-time password (OTP) and one-time pad to achieve an IoT ecosystem with theoretically unbreakable security. The proposed D-OTP was implemented into the Constrained Application Protocol (CoAP) through the commonly used libcoap library. The experimental results revealed that an additional 8.93% latency overhead was required to obtain an unbreakable guarantee of data transfers in 100 CoAP communication sessions.

Lightweight Anonymous Authentication and Key Agreement Protocol Based on CoAP of Internet of Things

“…However, sensors with limited resources as end nodes should only respond without providing the function of initiating data, as they require data from users and taking into account their limited hardware. This has been previously explained (see, e.g., [ 1 , 18 , 26 ]). However, the CoAP network architecture assumed in the literature [ 22 ] is the same as that in [ 20 ].…”

A Critical Cybersecurity Analysis and Future Research Directions for the Internet of Things: A Comprehensive Review

“…Several considerations, including the type of device and the task it will carry out, determine the optimal protocol for every given Internet of Things application. Constraint Application Protocol (CoAP) [16][17][18] and Message Queueing Telemetry Transport (MQTT) [19][20][21] are the most often used application protocols. CoAP was developed to let low-power, low-resource devices connect to the Internet of Things via slow, unreliable networks.…”