HE, Le; LIN, Xiaoen; YU, Hongbo. Improved Preimage Attacks on 4-Round Keccak-224/256. IACR Transactions on Symmetric Cryptology, [S. l.], v. 2021, n. 1, p. 217–238, 2021. DOI: 10.46586/tosc.v2021.i1.217-238. Disponível em: https://tosc.iacr.org/index.php/ToSC/article/view/8838.. Acesso em: 31 mar. 2025.