Proposal of a Signature Scheme Based on STS Trapdoor

  • Shigeo Tsujii
  • Masahito Gotaishi
  • Kohtaro Tadaki
  • Ryo Fujita
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 6061)


A New digital signature scheme based on Stepwise Triangular Scheme (STS) is proposed. The proposed trapdoor has resolved the vulnerability of STS and secure against both Gröbner Bases and Rank Attacks. In addition, as a basic trapdoor, it is more efficient than the existing systems. With the efficient implementation, the Multivariate Public Key Cryptosystems (MPKC) signature public key has the signature longer than the message by less than 25 %, for example.


public key cryptosystem multivariate polynomial multivariate public key cryptosystem stepwise triangular scheme digital signature 


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Copyright information

© Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  • Shigeo Tsujii
    • 1
  • Masahito Gotaishi
    • 1
  • Kohtaro Tadaki
    • 1
    • 2
  • Ryo Fujita
    • 1
  1. 1.Research & Development InitiativeChuo University 
  2. 2.JST CRESTTokyoJapan

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