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On Tightly-Secure (Linkable) Ring Signatures

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Information and Communications Security (ICICS 2021)

Part of the book series: Lecture Notes in Computer Science ((LNSC,volume 12919))

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Abstract

Tight security is increasingly gaining importance in real-world cryptography, as it allows to deploy the cryptosystem without compensating the security loss of a reduction with larger parameters. In this paper, we point out the difficulties of creating tightly-secure ring signatures (RS) and linkable ring signatures (LRS), then present solutions to overcome them. As a result, we construct a tightly-secure RS scheme that is more efficient than the previous construction (ESORICS’18), and the first tightly-secure LRS scheme. The security is based on the Computational and Decisional Diffie-Hellman assumptions in the random oracle model.

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Acknowledgments

The work is supported by the National Key Research and Development Program of China (No. 2020YFA0309705), and the National Natural Science Foundation of China (No. 61802376).

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Authors and Affiliations

  1. TCA Lab of State Key Laboratory of Computer Science, Institute of Software, Chinese Academy of Sciences, Beijing, China

    Guofeng Tang

  2. University of Chinese Academy of Sciences, Beijing, China

    Guofeng Tang

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  1. Guofeng Tang
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Correspondence to Guofeng Tang .

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Editors and Affiliations

  1. Singapore Management University, Singapore, Singapore

    Debin Gao

  2. Tsinghua University, Beijing, China

    Qi Li

  3. Xi'an Jiaotong University, Xi'an, China

    Xiaohong Guan

  4. Chongqing University, Chongqing, China

    Xiaofeng Liao

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Tang, G. (2021). On Tightly-Secure (Linkable) Ring Signatures. In: Gao, D., Li, Q., Guan, X., Liao, X. (eds) Information and Communications Security. ICICS 2021. Lecture Notes in Computer Science(), vol 12919. Springer, Cham. https://doi.org/10.1007/978-3-030-88052-1_22

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  • DOI: https://doi.org/10.1007/978-3-030-88052-1_22

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  • Print ISBN: 978-3-030-88051-4

  • Online ISBN: 978-3-030-88052-1

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