Netinfo Security ›› 2017, Vol. 17 ›› Issue (7): 32-39.doi: 10.3969/j.issn.1671-1122.2017.07.005

• Orginal Article • Previous Articles     Next Articles

Blockchain and Privacy Preserving Mechanisms in Cryptocurrency

Hao WANG1,2, Xiangfu SONG1, Junming KE1, Qiuliang XU1()   

  1. 1.Software College, Shandong University, Jinan Shandong 250101,China
    2. School of Information Science and Engineering, Shandong Normal University, Jinan Shandong 250358, China
  • Received:2017-06-12 Online:2017-07-20 Published:2020-05-12

Abstract:

As the supporting technique of bitcoin, blockchain is a decentralized infrastructure, which uses a linked data structure to verify and store data, and uses the distributed node consensus mechanism to generate and update data. Because of its characteristic of decentralized, verifiable and tamper proofing, blockchain has quickly become the focus of attentions by governments, international organizations, large consortia and scientific research institutions. This paper discusses the working principle of blockchain in cryptocurrency by comparing with the bitcoin system, introduces some typical consensuses mechanisms used in blockchain technology, analyzes the challenges of anonymity and privacy protection in cryptocurrency, and introduces the existing anonymous and privacy protection schemes.

Key words: blockchain, bitcoin, consensus mechanisms, anonymity, cryptocurrency

CLC Number: