Revisiting the Differential Meet-In-The-Middle Cryptanalysis

ePrint Report: Revisiting the Differential Meet-In-The-Middle Cryptanalysis

Ling Song, Qianqian Yang, Huimin Liu

The differential meet-in-the-middle (MITM) attack is a new cryptanalysis technique proposed at Crypto 2023 recently. It led to greatly improved attacks on round-reduced SKINNY-128-384 and AES-256. In this paper, we revisit the differential MITM attack and propose several variants by absorbing techniques widely used in the classical differential attack. In particular, we present a new differential MITM attack that generalizes the basic differential MITM attack in several …

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