Conference Paper


Trade-off between security and scalability in blockchain design: A dynamic sharding approach

Abstract

Security and scalability are considered as two major issues that are most likely to influence rapid deployment of blockchains in businesses. We believe that the ability to scale up a blockchain lies mainly in improving the underlying technology rather than deploying new hardware. Though recent research works have applied sharding techniques in enhancing scalability of blockchains, they do not cater for addressing the issue of both data security and scalability in blockchains. In this paper, we propose an approach that makes a trade-off between security and scalability when designing blockchain based systems. We propose an efficient replication model, which creates dynamic sharding wherein blocks are stored in a varying number of nodes. The proposed approach shows that the replication of blockchain over peer-to-peer network is minimized as the blockchain’s length evolves according to a replication factor to preserve the security.

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Authors

Khacef, Kahina
Benbernou, Salima
Ouziri, Mourad
Younas, Muhammad

Oxford Brookes departments

School of Engineering, Computing and Mathematics

Dates

Year of publication: 2021
Date of RADAR deposit: 2022-07-15



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