A signature scheme with efficient proof of validity

  • Authors:
  • Masayuki Abe;Miyako Ohkubo

  • Affiliations:
  • Information Sharing Platform Laboratories, NTT Corporation, Japan;NICT, Japan

  • Venue:
  • IWCC'11 Proceedings of the Third international conference on Coding and cryptology
  • Year:
  • 2011

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Abstract

A signature scheme is presented that, when combined with the Groth-Sahai proof system, can efficiently prove the validity of a committed signature to a message shown in the clear. Compared to the Boneh-Boyen signature scheme, the proposed scheme yields a shorter proof of validity and is based on a more desirable hardness assumption that achieves a better security bound when analyzed in the generic group model.