A Storage Efficient Redactable Signature in the Standard Model

  • Authors:
  • Ryo Nojima;Jin Tamura;Youki Kadobayashi;Hiroaki Kikuchi

  • Affiliations:
  • National Institute of Information and Communications Technology (NICT), Japan;National Institute of Information and Communications Technology (NICT), Japan;Nara Institute of Science of Technology (NAIST), Japan;Tokai University, Japan

  • Venue:
  • ISC '09 Proceedings of the 12th International Conference on Information Security
  • Year:
  • 2009

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Abstract

In this paper, we propose a simple redactable signature scheme for super-sets whose message-signature size is O (|M | + *** ), where *** is a security parameter and M is a message to be signed. The scheme proposed by Johnson et al. in CT-RSA 2003 has the similar performance but this scheme was proven secure based on the RSA assumption in the random oracle model. In this paper, we show that such a scheme can be constructed based on the RSA assumption without the random oracles.