Speeding up Deciphering by Hypergraph Ordering

  title={Speeding up Deciphering by Hypergraph Ordering},
  author={Peter Hor{\'a}k and Zsolt Tuza},
  journal={Des. Codes Cryptography},
The “Gluing Algorithm” of Semaev [Des. Codes Cryptogr. 49 (2008), 47–60] — that finds all solutions of a sparse system of linear equations over the Galois field GF (q) — has average running time O(mq| k 1Xj |), where m is the total number of equations, and ∪k1Xj is the set of all unknowns actively occurring in the first k equations. Our goal here is to minimize the exponent of q in the case where every equation contains at most three unknowns. The main result states that if the total number… CONTINUE READING
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