Title
On enumeration of polynomial equivalence classes and their application to MPKC.
Abstract
The Isomorphism of Polynomials (IP) is one of the most fundamental problems in multivariate public key cryptography (MPKC). In this paper, we introduce a new framework to study the counting problem associated to IP. Namely, we present tools of finite geometry allowing to investigate the counting problem associated to IP. Precisely, we focus on enumerating or estimating the number of isomorphism equivalence classes of homogeneous quadratic polynomial systems. These problems are equivalent to finding the scale of the key space of a multivariate cryptosystem and the total number of different multivariate cryptographic schemes respectively, which might impact the security and the potential capability of MPKC. We also consider their applications in the analysis of a specific multivariate public key cryptosystem. Our results not only answer how many cryptographic schemes can be derived from monomials and how big the key space is for a fixed scheme, but also show that quite many HFE cryptosystems are equivalent to a Matsumoto–Imai scheme.
Year
DOI
Venue
2011
10.1016/j.ffa.2011.09.001
Finite Fields and Their Applications
Keywords
DocType
Volume
94A60,05B25,11T55,14G50,11T71
Journal
18
Issue
ISSN
Citations 
2
1071-5797
5
PageRank 
References 
Authors
0.64
18
4
Name
Order
Citations
PageRank
Dongdai Lin176298.54
Jean-Charles Faugère2103774.00
Ludovic Perret354639.06
Tianze Wang4152.55