Blar i Department of Informatics på tidsskrift "IACR Transactions on Symmetric Cryptology (ToSC)"

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    • Decomposing Linear Layers 

      Beierle, Christof; Felke, Patrick; Leander, Gregor; Rønjom, Sondre (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 

      Grassi, Lorenzo; Khovratovich, Dmitry; Rønjom, Sondre; Schofnegger, Markus (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 

      Bardeh, Navid Ghaedi; Rijmen, Vincent Stefaan (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 ...