Chinese Journal of Network and Information Security ›› 2020, Vol. 6 ›› Issue (2): 56-66.doi: 10.11959/j.issn.2096-109x.2020022

Special Issue: 区块链

• Special Column:Blockchain Technology • Previous Articles     Next Articles

Privacy-preserving access control for public wireless LAN utilizing the bitcoin blockchain

Yukun NIU1,Lingbo WEI1(),Chi ZHANG1,Xia ZHANG2,Vejarano Gustavo3   

  1. 1 School of Information Science and Technology,University of Science and Technology of China,Hefei 230026,China
    2 School of Computer Science and Technology,Wuhan University of Technology,Wuhan 430047,China
    3 Department of Electrical Engineering and Computer Science,Loyola Marymount University,Los Angeles 90045,USA
  • Revised:2020-02-22 Online:2020-04-15 Published:2020-04-23
  • Supported by:
    The Natural Science Foundation of China(61702474);The National Key R&D Program of China(2018YFB0804201)

Abstract:

In designing an access control scheme for public wireless LAN (WLAN),user privacy protection and user accountability are two conflict goals.A novel user management and access control scheme was proposed to solve this problem by utilizing the bitcoin blockchain and Intel SGX.It utilized unmodified bitcoin blockchain to manage the ownership of access credentials for users without relying on any trusted third party.It adopted Intel SGX-based mixing technology to enhance anonymity of users’ access credentials.It designed verification path rule to resolve the conflicts between the privacy-preserving and accountability objectives.The effectiveness and feasibility of the proposed scheme are also demonstrated by security analysis and performance evaluation.

Key words: WLAN access control, bitcoin blockchain, Intel SGX, anonymity, accountability, authentication

CLC Number: 

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