By doing away with a central authority in internet of things (IoT) networks, blockchain technology can reduce the risk of IoT devices being compromised by a single point of security failure.
At the heart of the problem is the security architecture of the IoT, an inherently distributed client-server model that uses a central authority to manage IoT devices, along with all the data generated across an IoT network.
Blockchain removes this single point of decision-making that leads to failure, by enabling device networks to protect themselves in other ways, such as allowing devices to form group consensus about what is normal within a given network, and to quarantine any nodes that behave unusually.
The second aspect, is to form trust in IoT data by enabling what he called the five digital security primitives: availability, auditability, accountability, integrity and confidentiality.
In blockchain, data is automatically stored in many locations and is always accessible to users. For auditability and accountability, a private, permission-based blockchain is used – where all users are authorised to access the network – and because all data stored on the blockchain is signed, each device is accountable for its actions.
Source: The-Next-Wave-of-IoT-Asia https://www.computerweekly.com/news/252433944/How-blockchain-can-secure-the-IoT
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Article On blockchain and its integration with IoT. Challenges and o...
Highlights
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Challenges to address the integration of the IoT with blockchain.
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Analysis of blockchain potential benefits for the IoT.
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Blockchain IoT applications and platforms for the development of IoT solutions.
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Possible topologies to that integration.
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Evaluation of blockchain nodes in IoT devices.
Abstract
In the Internet of Things (IoT) vision, conventional devices become smart and autonomous. This vision is turning into a reality thanks to advances in technology, but there are still challenges to address, particularly in the security domain e.g., data reliability. Taking into account the predicted evolution of the IoT in the coming years, it is necessary to provide confidence in this huge incoming information source. Blockchain has emerged as a key technology that will transform the way in which we share information. Building trust in distributed environments without the need for authorities is a technological advance that has the potential to change many industries, the IoT among them. Disruptive technologies such as big data and cloud computing have been leveraged by IoT to overcome its limitations since its conception, and we think blockchain will be one of the next ones. This paper focuses on this relationship, investigates challenges in blockchain IoT applications, and surveys the most relevant work in order to analyze how blockchain could potentially improve the IoT.
Hi,
maybe this article may help you: https://arxiv.org/ftp/arxiv/papers/1608/1608.05187.pdf
The other main challenges will be the energy optimization. IoT devices are typically constrained nodes, so too much processing requirements for implementing the cryptographic algorithm may mean quicker node deaths. One of the research challenge is therefore to optimize the energy usage together with security.
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