2 papers
cs.CR2026
Post-Quantum Security of Block Cipher Constructions
Gorjan Alagic, Chen Bai, Christian Majenz +1
Block ciphers are versatile cryptographic ingredients that are used in a wide range of applications ranging from secure Internet communications to disk encryption. While post-quant…
quant-ph2025
Security of Key-Alternating Ciphers: Quantum Lower Bounds and Quantum Walk Attacks
Chen Bai, Mehdi Esmaili, Atul Mantri
We study the quantum security of key-alternating ciphers (KAC), a natural multi-round generalization of the Even--Mansour construction. KAC abstracts the round structure of practic…