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Cross-Chain-Based Decentralized Identity for Mortgage Loans

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Knowledge Science, Engineering and Management (KSEM 2021)

Part of the book series: Lecture Notes in Computer Science ((LNAI,volume 12817))

Abstract

Decentralized Identity (DID) has been deemed an ideal mechanism for identity sharing and authentication, which allows users to process control over identity information. However, the centralized storage of DID hinders further expansion due to security issues. Combining the existing blockchain technology with the DID theory has a great development prospect in terms of privacy protection and security enhancement. In order to address the identity authentication issue of collateral in financial loans, this paper proposes the Cross-chain Channel-based DID (C3-DID) model, which realizes the distributed storage of DID and allows relay-based cross-chain data exchange. We deploy the loan process and the identity verification process on consortium blockchains, separately. In addition, a permission chain channel, called peer-to-peer Matching Channel (MC), is established to accomplish cross-chain data exchange. Our security analysis indicates that the proposed model can resist multiple threats.

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Acknowledgements

This work is partially supported by National Natural Science Foundation of China (Grant No.s 61871037, 61972034), Natural Science Foundation of Shandong Province (Grant No.s ZR2019ZD10, ZR2020ZD01), Natural Science Foundation of Beijing Municipality (Grant No. 4202068), Ministry of Education - China Mobile Research Fund Project (Grant No. MCM20180401).

Author information

Authors and Affiliations

  1. School of Computer Science and Technology, Beijing Institute of Technology, Beijing, 100081, China

    Tianxiu Xie & Yue Zhang

  2. School of Cyberspace Science and Technology, Beijing Institute of Technology, Beijing, 100081, China

    Keke Gai & Lei Xu

Authors
  1. Tianxiu Xie
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  2. Yue Zhang
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  3. Keke Gai
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  4. Lei Xu
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Corresponding author

Correspondence to Keke Gai .

Editor information

Editors and Affiliations

  1. Tsinghua University, Beijing, China

    Han Qiu

  2. Ibaraki University, Hitachi, Japan

    Cheng Zhang

  3. University of Kentucky, Lexington, KY, USA

    Zongming Fei

  4. Texas A&M University – Commerce, Commerce, TX, USA

    Meikang Qiu

  5. Princeton University, Princeton, NJ, USA

    Sun-Yuan Kung

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Xie, T., Zhang, Y., Gai, K., Xu, L. (2021). Cross-Chain-Based Decentralized Identity for Mortgage Loans. In: Qiu, H., Zhang, C., Fei, Z., Qiu, M., Kung, SY. (eds) Knowledge Science, Engineering and Management. KSEM 2021. Lecture Notes in Computer Science(), vol 12817. Springer, Cham. https://doi.org/10.1007/978-3-030-82153-1_51

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  • DOI: https://doi.org/10.1007/978-3-030-82153-1_51

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-030-82152-4

  • Online ISBN: 978-3-030-82153-1

  • eBook Packages: Computer ScienceComputer Science (R0)

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