发表刊物：Advances in Cryptology – CRYPTO 2021

关键字：Message authentication codes, Beyond-birthday-bound security, Multi-user security

摘要：Double-block Hash-then-Sum (DbHtS) MACs are a class of MACs that aim for achieving beyond-birthday-bound security, including SUM-ECBC, PMAC_Plus, 3kf9 and LightMAC_Plus. Recently Datta et al. (FSE'19), and then Kim et al. (Eurocrypt'20) prove that DbHtS constructions are secure beyond the birthday bound in the single-user setting. However, by a generic reduction, their results degrade to (or even worse than) the birthday bound in the multi-user setting.

第一作者：沈耀斌

论文类型：会议论文

学科门类：工学

文献类型：C

卷号：12827

页面范围：309–336

是否译文：否

发表时间：2021-08-11