BlindShuffler: Universal and Trustless Mixing for Confidential Transactions
Chenke Wang, Zhonghui Ge, Yu Long, Xian Xu, Shi-Feng Sun, Dawu Gu · 2024
Mixing services provide unlinkability for blockchains by breaking the link between sender/receiver identities and are highly appreciated for their compatibility with the underlying blockchains. Many efforts have been made to provide mixing services for either non-confidential or confidential payments. For confidential payments, all the known mixing protocols are designed for confidential blockchains using homomorphic commitment. There is, however, no satisfactory solution for confidential blockchains using public key encryption (PKE), such as PGC and Zether.