A novel ID-Based partial delegation with warrant proxy signature scheme

  • Authors:
  • Haifeng Qian;Zhenfu Cao

  • Affiliations:
  • Department of Computer Science, Shanghai Jiao Tong University, Shanghai, China;Department of Computer Science, Shanghai Jiao Tong University, Shanghai, China

  • Venue:
  • ISPA'05 Proceedings of the 2005 international conference on Parallel and Distributed Processing and Applications
  • Year:
  • 2005

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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.