@inproceedings{5c3192035ebd4415b82eea9d70a316b3,
title = "Security Analysis of Sharding in the Blockchain System",
abstract = "The design of sharding aims to solve the scalability challenge in a blockchain network. Typically, by splitting the whole blockchain network into smaller shards, the transaction throughput can be significantly improved. However, distributing fewer attesting nodes for transactions in a shard may cause higher security risks. This paper analyzes the security level of transaction verification in different types of shards and transactions. The analyzed result indicates that the size of shards and validating nodes number may influence the transaction security in shards. And the random distribution of attesting nodes can reduce such influence and improve the reliability of consensus in shards.",
keywords = "Blockchain, random distribution, security, sharding",
author = "Dachao Yu and Hao Xu and Lei Zhang and Bin Cao and Imran, \{Muhammad Ali\}",
note = "Publisher Copyright: {\textcopyright} 2021 IEEE.; 32nd IEEE Annual International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2021 ; Conference date: 13-09-2021 Through 16-09-2021",
year = "2021",
month = sep,
day = "13",
doi = "10.1109/PIMRC50174.2021.9569351",
language = "English",
series = "IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
pages = "1030--1035",
booktitle = "2021 IEEE 32nd Annual International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2021",
address = "United States",
}