# BMQE system: a MQ equations system based on ergodic matrix

Zhou, Xiaoyi, Ma, Jixin, Du, Wencai, Zhao, Bo, Petridis, Miltos and Zhao, Yongzhe (2010) *BMQE system: a MQ equations system based on ergodic matrix.* In: SECRYPT 2010: Proceedings of the International Conference on Security and Cryptography. SciTePress – Science and Technology Publications, Portugal, pp. 431-435. ISBN 9789898425188

## Abstract

In this paper, we propose a multivariate quadratic (MQ) equation system based on ergodic matrix (EM) over a finite field with q elements (denoted as F^q). The system actually implicates a problem which is equivalent to the famous Graph Coloring problem, and therefore is NP complete for attackers. The complexity of bisectional multivariate quadratic equation (BMQE) system is determined by the number of the variables, of the equations and of the elements of Fq, which is denoted as n, m, and q, respectively. The paper shows that, if the number of the equations is larger or equal to twice the number of the variables, and qn is large enough, the system is complicated enough to prevent attacks from most of the existing attacking schemes.

Item Type: | Conference Proceedings |
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Title of Proceedings: | SECRYPT 2010: Proceedings of the International Conference on Security and Cryptography |

Additional Information: | [1] This poster was presented during sesssion on Cryptographic Techniques and Key Management at SECRYPT 2010 - International Conference on Security and Cryptography held from 26-28 July 2010 in Athens, Greece. [2] SECRYPT is part of ICETE - The International Joint Conference on e-Business and Telecommunications. [3] IEEE Conference Publications |

Uncontrolled Keywords: | ergodic matrix, bisectional, multivariate quadratic, fixing variables, NP-hard, complexity theory, Galois fields, polynomials, public key cryptography |

Subjects: | Q Science > QA Mathematics |

School / Department / Research Groups: | School of Computing & Mathematical Sciences School of Computing & Mathematical Sciences > Department of Computer Science School of Computing & Mathematical Sciences > Department of Computer Systems Technology |

Related URLs: | |

Last Modified: | 27 Mar 2013 11:30 |

URI: | http://gala.gre.ac.uk/id/eprint/3885 |

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