Welcome to the resource topic for 2024/1959
Title:
SoK: Privacy-Preserving Transactions in Blockchains
Authors: Foteini Baldimtsi, Kostas Kryptos Chalkias, Varun Madathil, Arnab Roy
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.
ePrint: https://eprint.iacr.org/2024/1959
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