Rainbow, a new multivariable polynomial signature scheme

  • Authors:
  • Jintai Ding;Dieter Schmidt

  • Affiliations:
  • Department of Mathematical Sciences, University of Cincinnati, Cincinnati, OH;Department of Electrical & Computer Engineering and Computer Science, University of Cincinnati, Cincinnati, OH

  • Venue:
  • ACNS'05 Proceedings of the Third international conference on Applied Cryptography and Network Security
  • Year:
  • 2005

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Abstract

Balanced Oil and Vinegar signature schemes and the unbalanced Oil and Vinegar signature schemes are public key signature schemes based on multivariable polynomials. In this paper, we suggest a new signature scheme, which is a generalization of the Oil-Vinegar construction to improve the efficiency of the unbalanced Oil and Vinegar signature scheme. The basic idea can be described as a construction of multi-layer Oil-Vinegar construction and its generalization. We call our system a Rainbow signature scheme. We propose and implement a practical scheme, which works better than Sflash$^{v_2}$, in particular, in terms of signature generating time.