Semantic Scholar Open Access 2019 233 sitasi

Delegated Proof of Stake With Downgrade: A Secure and Efficient Blockchain Consensus Algorithm With Downgrade Mechanism

Fan Yang Wei Zhou Qingqing Wu Ruihua Long N. Xiong +1 lainnya

Abstrak

Blockchain technology has a wide range of applications in the fields of finance, credit reporting and intellectual property, etc. As the core of blockchain, consensus algorithm affects the security and performance of blockchain system directly. In the past 10 years, there have been about 30 consensus algorithms such as Proof of Work (PoW), Proof of Stake (PoS), Delegated Proof of Stake (DPoS), Ripple Protocol Consensus Algorithm (RPCA) and AlgoRand. But their security, stability and operating efficiency still lag far behind our actual needs. This paper introduces the computing power competition of PoW into DPoS to design an improved consensus algorithm named Delegated Proof of Stake with Downgrade (DDPoS). Through the further modification, the impact of both computing resources and stakes on generating blocks is reduced to achieve higher efficiency, fairness, and decentralization in consensus process. Then a downgrade mechanism is proposed to quickly replace the malicious nodes to improve the security. The simulation experiments in blockchain system show that the proposed consensus algorithm is significantly more efficient than PoW and PoS, but slightly lower than DPoS. However, its degree of centralization remains far below that of DPoS. And through the downgrade mechanism, the proposed consensus algorithm can detect and downgrade the malicious nodes timely to ensure the security and good operation of system.

Topik & Kata Kunci

Penulis (6)

F

Fan Yang

W

Wei Zhou

Q

Qingqing Wu

R

Ruihua Long

N

N. Xiong

M

Meiqi Zhou

Format Sitasi

Yang, F., Zhou, W., Wu, Q., Long, R., Xiong, N., Zhou, M. (2019). Delegated Proof of Stake With Downgrade: A Secure and Efficient Blockchain Consensus Algorithm With Downgrade Mechanism. https://doi.org/10.1109/ACCESS.2019.2935149

Akses Cepat

Lihat di Sumber doi.org/10.1109/ACCESS.2019.2935149
Informasi Jurnal
Tahun Terbit
2019
Bahasa
en
Total Sitasi
233×
Sumber Database
Semantic Scholar
DOI
10.1109/ACCESS.2019.2935149
Akses
Open Access ✓