Papers tagged as Multivariate
  1. A Practical Multivariate Blind Signature Scheme 2017 FinancialCryptography Multivariate Privacy Signatures fc17.ifca.ai
    Albrecht Petzoldt, Alan Szepieniec, Mohamed Saied Emam Mohamed

    Multivariate Cryptography is one of the main candidates for creating post-quantum cryptosystems. Especially in the area of digital signatures, there exist many practical and secure multivariate schemes. However, there is a lack of multivariate signature schemes with special properties such as blind, ring and group signatures. In this paper, we propose a generic technique to transform multivariate signature schemes into blind signature schemes and show the practicality of the construction on the example of Rainbow. The resulting scheme satisfies the usual blindness criterion and a one-more-unforgeability criterion adapted to MQ signatures, produces short blind signatures and is very efficient.