We present one of the most efficient attacks against the combination generator. This attack is inherent to this system as its only assumption is that the filtering function has a good autocorrelation. This is usually the case if the system is designed to be resistant to other kinds of attacks. We use only classical tools, namely vectorial correlation, weight 4 multiples and Walsh transform.
Cite
@article{arxiv.0907.0971,
title = {Attacking the combination generator},
author = {Frédéric Didier and Yann Laigle-Chapuy},
journal= {arXiv preprint arXiv:0907.0971},
year = {2009}
}