A Secure Publish/Subscribe Protocol for Internet of Things

The basic concept behind the emergence of Internet of Things (IoT) is to connect as many objects to the Internet as possible in an attempt to make our lives better in some way. However, connecting everyday objects like your car or house to the Internet can open up major security concerns. In this paper, we present a novel security framework for the Message Queue Transport Telemetry (MQTT) protocol based on publish/subscribe messages in order to enhance secure and privacy-friendly Internet of Things services. MQTT has burst onto the IoT scene in recent years due to its lightweight design and ease of use implementation necessary for IoT. Our proposed solution provides 3 security levels. The first security level suits for lightweight data exchanges of non-tampered messages. The second security level enhances the privacy protection of data sources and data receivers. The third security level offers robust long-term security with mutual authentication for all parties. The security framework is based on light cryptographic schemes in order to be suitable for constrained and small devices that are widely used in various IoT use cases. Moreover, our solution is tailored to MQTT without using additional security overhead

Towards NFC payments using a lightweight architecture for the Web of Things

The Web (and Internet) of Things has seen the rapid emergence of new protocols and standards, which provide for innovative models of interaction for applications. One such model fostered by the Web of Things (WoT) ecosystem is that of contactless interaction between devices. Near Field Communication (NFC) technology is one such enabler of contactless interactions. Contactless technology for the WoT requires all parties to agree one common definition and implementation and, in this paper, we propose a new lightweight architecture for the WoT, based on RESTful approaches. We show how the proposed architecture supports the concept of a mobile wallet, enabling users to make secure payments employing NFC technology with their mobile devices. In so doing, we argue that the vision of the WoT is brought a step closer to fruition