Full-domain subgroup hiding and constant-size group signatures

  • Authors:
  • Xavier Boyen;Brent Waters

  • Affiliations:
  • Voltage Inc., Palo Alto;SRI International

  • Venue:
  • PKC'07 Proceedings of the 10th international conference on Practice and theory in public-key cryptography
  • Year:
  • 2007

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Abstract

We give a short constant-size group signature scheme, which we prove fully secure under reasonable assumptions in bilinear groups, in the standard model. We achieve this result by using a new NIZK proof technique, related to the BGN cryptosystem and the GOS proof system, but that allows us to hide integers from the full domain rather than individual bits.