Anonymous Transaction of Digital Currency Based on Blockchain

Yang Liu ； Mingxing He ； Fangyuan Pu

《International Journal of Network Security》 22卷3期 (2020/05) Pp. 444-450

https://doi.org/10.6633/IJNS.202005_22(3).10

摘要

Blockchain can be seen as a shared database, and keep all data public and traceable. Everyone is accessible to the data recorded on the blockchain, which brings the risk of privacy leakage. When digital currency transactions are performed on the blockchain, users may not want to reveal their real identities. Therefore, it is particularly important to preserve the identity privacy of users. To solve the problem, we present an anonymous transaction scheme of digital currency to ensure the anonymity of the sender and receiver. we design a linkable ring signature algorithm based on elliptic curve cryptography (ECC) to conceal the real identity of sender and check double-spending. It is intermediate address that is used for concealing the real identity of receiver. Furthermore, we utilize a agency to reduce computational burden for receiver. Throughout the transaction process, the real identities of two sides are not disclosed to others, ensuring anonymous transaction.

關鍵字

Anonymous Transaction ； Blockchain ； Digital Currency ； Linkable Ring Signature