Welcome to the resource topic for 2022/951
Title:
MixCT: Mixing Confidential Transactions from Homomorphic Commitment
Authors: Jiajun Du, Zhonghui Ge, Yu Long, Zhen Liu, Shifeng Sun, Xian Xu, and Dawu Gu
Abstract:Mixing protocols serve as a promising solution to the unlinkability in blockchains. They work by hiding one transaction among a set of transactions and enjoy the advantage of high compatibility with the underlying system. However, due to the inherently public nature of the blockchains built on the account-based model, the unlinkability is highly restricted to non-confidential transactions. In the account-based model, blockchains supporting confidential payments need to trade their compatibility for unlinkability. In this paper, we propose MixCT, a generic protocol that provides the mixing service for confidential payment systems built from homomorphic commitment in the account-based model. We formally define the security goals including safety and availability, and prove that our generic construction satisfies them. Furthermore, we provide an efficient instantiation of MixCT by the Pedersen commitment and the one-out-of-many proof. The evaluation results show that MixCT introduces a small cost for its users while being highly compatible with the underlying confidential blockchain.
ePrint: https://eprint.iacr.org/2022/951
See all topics related to this paper.
Feel free to post resources that are related to this paper below.
Example resources include: implementations, explanation materials, talks, slides, links to previous discussions on other websites.
For more information, see the rules for Resource Topics .