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CTDRB: Controllable Timed Data Release Using Blockchains

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Security and Privacy in Communication Networks (SecureComm 2022)

Abstract

The notion of Timed Data Release (TDR) supports time-based sensitive data protection in such a way that sensitive data can be accessed only after a prescribed amount of time has passed. With recent advancements in blockchain techniques, practical solutions to support decentralized TDR using blockchains (BTDR) is gaining importance. Briefly, such designs entrust blockchain decentralized networks to serve as a decentralized time agent to protect the data and release the data at a prescribed release time. However, as a variant of outsourced data management service, BTDR inherently incurs the tension between data confidentiality protection as well as data control. Unfortunately, the off-the-shelf arts only strive to protect the data without rigorous support for the control of data.

In this paper, we design a controllable framework for BTDR called CTDRB. At a high level, CTDRB realizes data access control as well as data lifetime control while protecting data confidentiality. The novel technical contributions of CTDRB are three-fold: first, we adopt a temporal CP-ABE cryptographic scheme, serving as a basis, to enable the data access control; second, on top of such a design, we enable data lifetime control by carefully designing a time token control service on Ethereum. We then design two representative data lifetime control primitives, namely Data Revocation and Data Release Time Modification. The former refers to revoking the data before its prescribed release time while the latter modifies the release of data at a time ahead of its prescribed release time; third but not the least, we perform security analysis of CTDRB and implement it using the Ethereum blockchain. Our results show that CTDRB incurs only a moderate on-chain gas consumption and demonstrates high efficiency.

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Acknowledgement

This material is based upon work supported by the National Science Foundation under Grant #2020071. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.

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Authors and Affiliations

  1. University of Pittsburgh, Pittsburgh, PA, USA

    Jingzhe Wang & Balaji Palanisamy

Authors
  1. Jingzhe Wang
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  2. Balaji Palanisamy
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Corresponding author

Correspondence to Jingzhe Wang .

Editor information

Editors and Affiliations

  1. University of Kansas, Lawrence, KS, USA

    Fengjun Li

  2. Delft University of Technology, Delft, The Netherlands

    Kaitai Liang

  3. The Ohio State University, Columbus, OH, USA

    Zhiqiang Lin

  4. Norwegian University of Science and Tech, Gjøvik, Norway

    Sokratis K. Katsikas

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Wang, J., Palanisamy, B. (2023). CTDRB: Controllable Timed Data Release Using Blockchains. In: Li, F., Liang, K., Lin, Z., Katsikas, S.K. (eds) Security and Privacy in Communication Networks. SecureComm 2022. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol 462. Springer, Cham. https://doi.org/10.1007/978-3-031-25538-0_13

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  • DOI: https://doi.org/10.1007/978-3-031-25538-0_13

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-031-25537-3

  • Online ISBN: 978-3-031-25538-0

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