[en] NIST is planning a call for a tweakable variable-input-length strong pseudorandom permutation (VIL-SPRP), coined as “an Accordion mode”. In this paper, we survey tweakable VIL constructions, specially focusing on those based on the Hash-Encrypt-Hash paradigm (including HCTR and similar designs) in terms of their applicability as an Accordion mode, and discuss their efficiency and shortcomings. Furthermore, we also introduce an improved version that achieves Beyond Birthday Bound (BBB) security.
Research center :
Interdisciplinary Centre for Security, Reliability and Trust (SnT) > CryptoLUX – Cryptography NCER-FT - FinTech National Centre of Excellence in Research
Disciplines :
Computer science
Author, co-author :
Hieu Nguyen Duy; Unilu - University of Luxembourg [LU] > SnT
Fernández, Pablo García; Unilu - University of Luxembourg [LU] > SnT
UDOVENKO, Aleksei ; University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > Cryptolux
BIRYUKOV, Alexei ; University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Computer Science (DCS) ; Unilu - University of Luxembourg [LU] > Interdisciplinary Centre for Security, Reliability and Trust (SnT) > CryptoLUX
External co-authors :
no
Language :
English
Title :
Accordion mode based on Hash-Encrypt-Hash
Publication date :
2024
Event name :
NIST Workshop on the Requirements for an Accordion Cipher Mode 2024
