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Identity-Based Cryptography in Public Key Management

  • Conference paper
Public Key Infrastructure (EuroPKI 2004)

Part of the book series: Lecture Notes in Computer Science ((LNCS,volume 3093))

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Abstract

To guarantee the authenticity of public keys, traditional PKC (Public Key Cryptography) requires certificates signed by a CA (Certification Authority). However, the management of infrastructure supporting certificates is the main complaint against traditional PKC. While identity-based PKC can eliminate this cumbersome infrastructure, the key escrow of a user’s private key is inherent in identity-based PKC. Recently, new PKC paradigms were introduced: certificate-less PKC and certificate-based PKC. They retain the desirable properties of identity-based PKC without the inherent key escrow problem. A certificate-less cryptosystem eliminates the need for unwieldy certificates and a certificate-based cryptosystem simplifies the public key revocation problem. In this paper, we present an equivalence theorem among identity-based encryption, certificate-less encryption, and certificate-based encryption. We demonstrate that the three paradigms are essentially equivalent.

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Author information

Authors and Affiliations

  1. Dept. of Electronic and Electrical Eng., IS Lab., POSTECH, Republic of Korea

    Dae Hyun Yum & Pil Joong Lee

Authors
  1. Dae Hyun Yum
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  2. Pil Joong Lee
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Editor information

Editors and Affiliations

  1. Dept. of Technology Education and Digital Systems, University of Piraeus, 150 Androutsou St., GR-18532, Pireaus, Greece

    Sokratis K. Katsikas

  2. Department of Information and Communication Systems Engineering, University of the Aegean, Karlovassi, Samos, Greece

    Stefanos Gritzalis

  3. Department of Information and Communication Technologies, University of A Coruña, Spain

    Javier López

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© 2004 Springer-Verlag Berlin Heidelberg

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Yum, D.H., Lee, P.J. (2004). Identity-Based Cryptography in Public Key Management. In: Katsikas, S.K., Gritzalis, S., López, J. (eds) Public Key Infrastructure. EuroPKI 2004. Lecture Notes in Computer Science, vol 3093. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-25980-0_6

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  • DOI: https://doi.org/10.1007/978-3-540-25980-0_6

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-22216-3

  • Online ISBN: 978-3-540-25980-0

  • eBook Packages: Springer Book Archive

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