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A Certificate-Based Signature Scheme

  • Bo Gyeong Kang
  • Je Hong Park
  • Sang Geun Hahn
Part of the Lecture Notes in Computer Science book series (LNCS, volume 2964)

Abstract

In this paper, we propose the security notion of certificate-based signature that uses the same parameters and certificate revocation strategy as the encryption scheme presented at Eurocrypt 2003 by Gentry. Certificate-based signature preserves advantages of certificate-based encryption, such as implicit certification and no private key escrow. We present concrete certificate-based signature schemes derived from pairings on elliptic curves and prove their security in the random oracle model assuming that the underlying group is GDH. Additionally, we propose a concrete delegation-by-certificate proxy signature scheme which is derived from a certificate-based signature scheme after simple modifications. Our proxy scheme is provably secure in the random oracle model under the security notion defined by Boldyreva, Palacio and Warinschi.

Keywords

Signature Scheme Proxy Signature Random Oracle Model Proxy Signature Scheme Security Notion 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2004

Authors and Affiliations

  • Bo Gyeong Kang
    • 1
  • Je Hong Park
    • 1
  • Sang Geun Hahn
    • 1
  1. 1.Department of MathematicsKorea Advanced Institute of Science and TechnologyDaejeonKorea

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