A new proxy signature scheme for a specified group of verifiers

  • Authors:

  • Min-Shiang Hwang;Cheng-Chi Lee;Shiang-Feng Tzeng

  • Affiliations:

  • Department of Computer Science and Information Engineering, Asia University, No. 500, Lioufeng Road, Wufeng Shiang, Taichung, Taiwan, ROC;Department of Library and Information Science, Fu Jen Catholic University, 510 Jhongjheng Road, Sinjhuang City, Taipei County 24205, Taiwan, ROC and Department of Photonics and Communication Engin ...;Department of Information Management, Chaoyang University of Technology, 168 Gifeng E. Road, Wufeng, Taichung County 413, Taiwan, ROC

  • Venue:
  • Information Sciences: an International Journal
  • Year:
  • 2013

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Abstract

In this article, we shall propose a ((t"1, n"1), (t"2, n"2)) proxy signature scheme with (t"3, n"3) shared verification based on the RSA problem. In this scheme, any t"1 original signers can delegate the signing capability to the proxy group. After that, any t"2 proxy signers can sign a message on behalf of the original group for a specified verifier group. Only any t"3 verifiers together can check the validity of the proxy signature from the proxy group. The proposed scheme satisfies all proxy requirements of proxy signatures. Furthermore, the actual original signers and proxy signers can be individually identified in our scheme.