Cryptanalysis of Full-Round BipBip

BipBip is a low-latency tweakable block cipher proposed by Belkheyar et al. in 2023. It was designed for pointer encryption inside a new memory safety mechanism called Cryptographic Capability Computing (C3). BipBip encrypts blocks of 24 bits using a 40-bit tweak and a 256-bit master key and is comp...

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Bibliographic Details
Published inIACR Transactions on Symmetric Cryptology Vol. 2024; no. 2; pp. 68 - 84
Main Authors Wang, Jinliang, Boura, Christina, Derbez, Patrick, Hu, Kai, Li, Muzhou, Wang, Meiqin
Format Journal Article
LanguageEnglish
Published Ruhr Universität Bochum 18.06.2024
Ruhr-Universität Bochum
Subjects
BipBip
Computer Science
Cryptography and Security
Demirci-Selçuk meet-in-the-middle cryptanalysis
low latency
Demirci-Selçuk meet-in-the-middle cryptanalysis
low latency
BipBip
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Summary:BipBip is a low-latency tweakable block cipher proposed by Belkheyar et al. in 2023. It was designed for pointer encryption inside a new memory safety mechanism called Cryptographic Capability Computing (C3). BipBip encrypts blocks of 24 bits using a 40-bit tweak and a 256-bit master key and is composed of 11 rounds. n this article, we provide a Demirci-Selçuk Meet-in-the-Middle (DS-MITM) attack against the 11-round (full) variant that breaks the security claim of the designers.
ISSN:2519-173X
2519-173X
DOI:10.46586/tosc.v2024.i2.68-84