Switching the Top Slice of the Sandwich with Extra Filling Yields a Stronger Boomerang for NLFSR-based Block Ciphers

ePrint Report: Switching the Top Slice of the Sandwich with Extra Filling Yields a Stronger Boomerang for NLFSR-based Block Ciphers

Amit Jana, Mostafizar Rahman, Dhiman Saha, Goutam Paul

The Boomerang attack was one of the first attempts to visualize a cipher ($E$) as a composition of two sub-ciphers ($E_0\circ E_1$) to devise and exploit two high-probability (say $p,q$) shorter trails instead of relying on a single low probability (say $s$) longer trail for differential cryptanalysis. The attack generally works whenever …

attack block cipher ciphers eprint report paul report sandwich stronger