Beyond full‐bit secure authenticated encryption without input‐length limitation by Akiko Inoue

“…Although all such AE schemes are secure up to a full‐bit (i.e. b‐bit) bound at most, Naito et al. proposed the first beyond full‐bit‐bound secure AE schemes, PFB_Plus and PFBω, at Eurocrypt 2020. PFB_Plus and PFBω achieve 2b‐bit security and ωb‐bit security, respectively, where ω is a parameter s.t. ω∈N. …”
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Highly Secure Nonce-based MACs from the Sum of Tweakable Block Ciphers by Wonseok Choi, Akiko Inoue, Byeonghak Lee, Jooyoung Lee, Eik List, Kazuhiko Minematsu, Yusuke Naito

“…For NaT2 in particular, we rely on the recent proof framework for Double-block Hash-then-Sum by Kim et al. from Eurocrypt 2020.…”
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