Paper Info
Title
IoTLogBlock: Recording Off-line Transactions of Low-Power IoT Devices Using a Blockchain
Abstract
For any distributed system, and especially for the Internet of Things, recording interactions between devices is essential. At first glance, blockchains seem to be suitable for storing these interactions, as they allow multiple parties to share a distributed ledger. However, at a closer look, blockchains require heavy computations, large memory capacity, and always-on communication to the cloud; these are three properties that are challenging for IoT devices with limited resources. In this paper, we present IoTLogBlock to address these challenges. IoTLogBlock connects resource-constrained IoT devices to the blockchain, and it consists of three building blocks jointly enabling recording transactions: a lightweight contract signing protocol, a blockchain network, and a smart contract. The contract signing protocol allows devices to interact locally to perform transactions, even if no communication to the cloud and the blockchain exists at that moment. At a later time, devices forward the stored transactions to the blockchain, where a smart contract ultimately verifies the transactions. We evaluate our design on low-power devices and quantify the performance in terms of memory, computation, and energy consumption. Our results show that a constrained device can create and sign a transaction within 3 s on average. Finally, we expose the devices to network scenarios with edge connections ranging from 10 s to over 2 h.
Year
DOI
Venue
2019
10.1109/LCN44214.2019.8990728
2019 IEEE 44th Conference on Local Computer Networks (LCN)
Keywords
DocType
ISSN
Internet of Things,Blockchain,Smart contracts
Conference
0742-1303
ISBN
Citations 
PageRank 
978-1-7281-1029-5
0
0.34
References 
Authors
10
3
Name
Order
Citations
PageRank
Christos Profentzas101.35
Magnus Almgren227039.17
Olaf Landsiedel300.68