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Attribute-Based Designated Combiner Transitive Signature Scheme

Author

Listed:
  • Shaonan Hou

    (School of Mathematics and Statistics, Fujian Normal University, Fuzhou 350117, China)

  • Shaojun Yang

    (School of Mathematics and Statistics, Fujian Normal University, Fuzhou 350117, China
    Key Laboratory of Analytical Mathematics and Applications (Ministry of Education), Fujian Normal University, Fuzhou 350117, China)

  • Chengjun Lin

    (Fujian Key Laboratory of Financial Information Processing, Putian University, Putian 351100, China)

Abstract

Transitive signatures allow any entity to obtain a valid signature of ( i , k ) by combining signatures of ( i , j ) and ( j , k ) . However, the traditional transitive signature scheme does not offer fine-grained control over the combiner. To address this issue, we propose a formal definition of the attribute-based designated combiner transitive signature (ABDCTS) and its security model, where only entities whose inherent attributes meet the access policy can combine signatures. By introducing the fine-grained access control structure, control over the combiner is achieved. To demonstrate the feasibility of our primitive, this paper presents the first attribute-based designated combiner transitive signature scheme. Under an adaptive chosen-message attack, we prove its security based on the one-more CDH problem and the co-CDH problem, and that its algorithms have robustness.

Suggested Citation

  • Shaonan Hou & Shaojun Yang & Chengjun Lin, 2024. "Attribute-Based Designated Combiner Transitive Signature Scheme," Mathematics, MDPI, vol. 12(19), pages 1-14, September.
    • Handle: RePEc:gam:jmathe:v:12:y:2024:i:19:p:3070-:d:1489656
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