@article{Shen_Guo_Wang_2020, title={Improved Security Bounds for Generalized Feistel Networks}, volume={2020}, url={https://tosc.iacr.org/index.php/ToSC/article/view/8571}, DOI={10.13154/tosc.v2020.i1.425-457}, abstractNote={<p>We revisit the security of various generalized Feistel networks. Concretely, for unbalanced, alternating, type-1, type-2, and type-3 Feistel networks built from random functions, we substantially improve the coupling analyzes of Hoang and Rogaway (CRYPTO 2010). For a tweakable blockcipher-based generalized Feistelnetwork proposed by Coron et al. (TCC 2010), we present a coupling analysis and for the first time show that with enough rounds, it achieves 2<em>n</em>-bit security, and this provides highly secure, double-length tweakable blockciphers.</p>}, number={1}, journal={IACR Transactions on Symmetric Cryptology}, author={Shen, Yaobin and Guo, Chun and Wang, Lei}, year={2020}, month={May}, pages={425–457} }