PUBLISH-SUBSCRIBE MODEL ARCHITECTURE FOR DECENTRALIZED INTERNET OF THINGS USING TANGLE
Centralized architecture has weaknesses in the form of a single point of failure and the risk of data tampering by malicious admin. There exists a decentralized solution that solves these problems, which is blockchain, but blockchain has limited transaction throughput and confirmation rates. To m...
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| Format: | Final Project |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/48555 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Centralized architecture has weaknesses in the form of a single point of failure and the risk of
data tampering by malicious admin. There exists a decentralized solution that solves these
problems, which is blockchain, but blockchain has limited transaction throughput and
confirmation rates. To meet the needs of IoT, a system that is better than blockchain is needed.
From the existing advancement of blockchain, one technology was chosen in which the
solution will be built. Tangle is the solution chosen because it has better scalability than
blockchain. Tangle uses the directed acyclic graph structure to improve the performance of
blockchain. In this final project, a publish-subscribe model is built on top of Tangle. The system
is made secure in terms of confidentiality, authenticity, integrity, and availability by using
encryption, digital signatures, and the decentralized nature of the blockchain. The system is
made for the use case of purchasing data between organizations. The solution is built to run on
a gateway. The use of the MQTT protocol for communication of IoT devices to the gateway
makes this system usable by many resource-limited devices. In addition, by placing the system
at a gateway, the sending of data to IoT devices that use the same gateway is not constrained
by Tangle's performance.
System performance is tested by measuring transaction throughput and delay between the
generation of data and the reading of data. The solution built successfully sends data with a
publish-subscribe system safely with better performance than conventional blockchain.
However, the Tangle network is still currently centralized. Additionally, the delay has no upper
limit value, so it cannot be used on an IoT system that is sensitive to timings. The maximum
limit on Tangle's performance has not been tested due to limited resources.
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