Paper 2024/1959
SoK: Privacy-Preserving Transactions in Blockchains
Abstract
Ensuring transaction privacy in blockchain systems is essential to safeguard user data and financial activity from exposure on public ledgers. This paper conducts a systematization of knowledge (SoK) on privacy-preserving techniques in cryptocurrencies with native privacy features. We define and compare privacy notions such as confidentiality, k-anonymity, full anonymity, and sender-receiver unlinkability, and categorize the cryptographic techniques employed to achieve these guarantees. Our analysis highlights the trade-offs between privacy guarantees, scalability, and regulatory compliance. Finally, we evaluate the usability of the most popular private cryptocurrencies providing insights into their practical deployment and user interaction. Through this analysis, we identify key gaps and challenges in current privacy solutions, highlighting areas where further research and development are needed to enhance privacy while maintaining scalability and security.
Metadata
- Available format(s)
-
PDF
- Category
- Cryptographic protocols
- Publication info
- Preprint.
- Keywords
- BlockchainPrivate TransactionSystematization of Knowledge
- Contact author(s)
-
foteini @ baldimtsi com
kostas @ mystenlabs com
varun madathil @ yale edu
arnab @ mystenlabs com - History
- 2024-12-06: approved
- 2024-12-03: received
- See all versions
- Short URL
- https://ia.cr/2024/1959
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2024/1959,
author = {Foteini Baldimtsi and Kostas Kryptos Chalkias and Varun Madathil and Arnab Roy},
title = {{SoK}: Privacy-Preserving Transactions in Blockchains},
howpublished = {Cryptology {ePrint} Archive, Paper 2024/1959},
year = {2024},
url = {https://eprint.iacr.org/2024/1959}
}
