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A Novel ID-Based Partial Delegation with Warrant Proxy Signature Scheme

  • Haifeng Qian
  • Zhenfu Cao
Part of the Lecture Notes in Computer Science book series (LNCS, volume 3759)

Abstract

A novel ID-based proxy-protected signature scheme based on identity information is presented in this paper. We review the concept ID-Based signature introduced by Shamir, define the security notion of an ID-Based signature. We also improve the Shamir’s ID-Based signature and prove its security under the proposed security notion. From the improved Shamir’s ID-Based signature scheme we construct an ID-Based proxy signature scheme, the security is based on the underlying ID-based signature scheme. Our scheme is efficient and easy to implement. The scheme simplifies the public key as the user’s id and can be easily applied to all the RSA-type cryptosystems.

Keywords

proxy signature identity-based signature provably secure RSA random oracle model 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2005

Authors and Affiliations

  • Haifeng Qian
    • 1
  • Zhenfu Cao
    • 1
  1. 1.Department of Computer ScienceShanghai Jiao Tong UniversityShanghaiChina

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