Security and Privacy on Blockchain
Rui Zhang, Rui Xue, Ling Liu

TL;DR
This paper provides a comprehensive overview of blockchain security and privacy, discussing fundamental properties, desired attributes, and techniques like consensus algorithms, cryptographic protocols, and privacy-preserving methods.
Contribution
It offers an in-depth survey of security and privacy concepts, properties, and techniques in blockchain, aiding understanding of current challenges and solutions.
Findings
Overview of blockchain security properties
Review of privacy-preserving techniques
Analysis of security techniques like consensus and cryptography
Abstract
Blockchain offers an innovative approach to storing information, executing transactions, performing functions, and establishing trust in an open environment. Many consider blockchain as a technology breakthrough for cryptography and cybersecurity, with use cases ranging from globally deployed cryptocurrency systems like Bitcoin, to smart contracts, smart grids over the Internet of Things, and so forth. Although blockchain has received growing interests in both academia and industry in the recent years, the security and privacy of blockchains continue to be at the center of the debate when deploying blockchain in different applications. This paper presents a comprehensive overview of the security and privacy of blockchain. To facilitate the discussion, we first introduce the notion of blockchains and its utility in the context of Bitcoin like online transactions. Then we describe the…
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Taxonomy
TopicsBlockchain Technology Applications and Security · Cryptography and Data Security · Privacy-Preserving Technologies in Data
