Research on privacy threats and protection technologies of blockchain
Shen Chuannian
Shanghai Branch of National Computer Network Emergency Response Technical Team/Coordination Center of China, Shanghai 201315, China）
Abstract： Aiming at the privacy leakage problems caused by the identity privacy threats and transaction privacy threats faced by the blockchain, from the perspective of privacy protection technology, this paper studies and discusses the blockchain privacy protection solutions from three aspects: information confusion, information hiding, and channel isolation. The research results show that the existing privacy protection technology of the blockchain has good application prospects, but in the face of increasingly complex privacy threats, the privacy protection technology of the blockchain still has scope for further improvement, and the future development of blockchain privacy protection is prospected from two aspects.
Key words : blockchain; privacy threat; privacy protection; currency mixing mechanism; information hiding
