International Association for Cryptologic Research

International Association
for Cryptologic Research

IACR News item: 03 March 2016

Shoichi Hirose
ePrint Report ePrint Report
May and Ozerov proposed an algorithm for the nearest-neighbor problem of vectors over the binary field at EUROCRYPT 2015. They applied their algorithm to the decoding problem of random linear codes over the binary field and confirmed the performance improvement. We describe their algorithm generalized to work for vectors over the finite field $\mathbb{F}_{q}$ with arbitrary prime power $q$. We also apply the generalized algorithm to the decoding problem of random linear codes over $\mathbb{F}_{q}$. It is observed by our numerical analysis of asymptotic time complexity that the May-Ozerov nearest-neighbor algorithm may not contribute to the performance improvement of the Stern information set decoding over $\mathbb{F}_{q}$ with $q\geq 3$.
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