On the secrecy gain of $\ell$-modular lattices

Esa V. Vesalainen, Anne-Maria Ernvall-Hytönen

We show that for every $\ell >1$, there is a counterexample to the $\ell$-modular secrecy function conjecture by Oggier, Solé and Belfiore. These counterexamples all satisfy the mod…