Abstract
Blockchain is a point-to-point distributed ledger technology based on cryptographic algorithms. However, the open and transparent blockchain ledger supplemented by statistical methods such as sociological mining and data mining has caused users’ privacy to face major threats. Therefore, privacy protection has become a focus of current blockchain technology research. Ring signature technology is a commonly used encryption technology in the field of privacy protection. Therefore, this paper constructs a blockchain privacy protection scheme based on ring signature. This solution built a privacy data storage protocol based on the ring signature on the elliptic curve, and used the complete anonymity of the ring signature to ensure the security of data and user identity privacy in blockchain applications. The correctness and safety proof analysis of the proposed scheme were also carried out.
Highlights
The concept of blockchain first appeared in the Bitcoin white paper of Nakamoto [1] in 2009
Because the blockchain has the characteristics of decentralization, tamper resistance, anonymity, and public verifiability, it has become the core technology of digital cryptocurrencies such as Bitcoin and Ethereum
Aiming at the problem of data privacy leakage facing the current blockchain, combined with the characteristics of ring signature technology, this paper proposes a blockchain privacy protection scheme based on ring signature
Summary
The concept of blockchain first appeared in the Bitcoin white paper of Nakamoto [1] in 2009. Because there is no centralized organization to process and maintain data, all transactions in the system are open and transparent in order for each node to reach a consensus quickly It brings the problem of data privacy leakage. Blockchain, as a public and transparent record ledger, brings open and transparent transactions as well as data privacy leaks This scheme adopts a ring signature transaction signature scheme to ensure the absolute anonymity of the user, thereby protecting the privacy of the users. Aiming at the problem of data privacy leakage facing the current blockchain, combined with the characteristics of ring signature technology, this paper proposes a blockchain privacy protection scheme based on ring signature.
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