Blar i Department of Informatics på tidsskrift "IACR Transactions on Symmetric Cryptology (ToSC)"
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Decomposing Linear Layers
(Journal article; Peer reviewed, 2022)There are many recent results on reverse-engineering (potentially hidden) structure in cryptographic S-boxes. The problem of recovering structure in the other main building block of symmetric cryptographic primitives, ... -
The Legendre Symbol and the Modulo-2 Operator in Symmetric Schemes over Fnp: Preimage Attack on Full Grendel
(Journal article; Peer reviewed, 2022)Motivated by modern cryptographic use cases such as multi-party computation (MPC), homomorphic encryption (HE), and zero-knowledge (ZK) protocols, several symmetric schemes that are efficient in these scenarios have recently ... -
New Key-Recovery Attack on Reduced-Round AES
(Journal article; Peer reviewed, 2022)A new fundamental 4-round property of AES, called the zero-difference property, was introduced by Rønjom, Bardeh and Helleseth at Asiacrypt 2017. Our work characterizes it in a simple way by exploiting the notion of related ...