Chinese Journal on Internet of Things ›› 2018, Vol. 2 ›› Issue (3): 71-81.doi: 10.11959/j.issn.2096-3750.2018.00066

• Theory and Technology • Previous Articles     Next Articles

Survey on privacy preserving techniques for blockchain

Zonghui WANG1,Shengli ZHANG1,Shi JIN2,Hui WANG1   

  1. 1 College of Information Engineering,Shenzhen University,Shenzhen 518060,China
    2 National Mobile Communications Research Laboratory,Southeast University,Nanjing 210096,China
  • Revised:2018-05-25 Online:2018-09-01 Published:2018-10-15
  • Supported by:
    The National Natural Science Foundation of China(61771315);Shenzhen Research Foundation(JCYJ20160226192223251)


Blockchain is a kind of distributed ledger technology with the characteristics of decentralization,security reliability,tamper-proof and programmable.The open and transparent feature of the blockchain system has seriously threatened the transaction privacy of users,and the corresponding privacy problem solution is designed for different application scenarios.Firstly,the basic working principle of block chain technology was introduced,and typical privacy issues was introduced in blockchain,such as transaction privacy and account privacy.Secondly,the existing typical blockchain privacy protection schemes were divided into three types:mixed-coin technology,cryptography technology and secure channel technology,and presents a comprehensive and comprehensive introduction to this three privacy protection schemes; Finally,the blockchain data privacy protection technology was analyzed,the application and development on IoT security were prospeted.

Key words: bitcoin, blockchain, privacy preserving, cryptography, Internet of things

CLC Number: 

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