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Paper: New Key-Recovery Attack on Reduced-Round AES

Authors:
Navid Ghaedi Bardeh , Norwegian University of Science and Technology, Trondheim, Norway; iagon, Oslo, Norway
Vincent Rijmen , imec - Computer Security and Industrial Cryptography (COSIC) Research Group, KU Leuven, Leuven, Belgium; University of Bergen, Bergen, Norway
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DOI: 10.46586/tosc.v2022.i2.43-62
URL: https://tosc.iacr.org/index.php/ToSC/article/view/9713
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Abstract: 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 differences which was introduced and well analyzed by the AES designers. We extend the 4-round property by considering some further properties of related differences over the AES linear layer, generalizing the zero-difference property. This results in a new key-recovery attack on 7-round AES which is the first attack on 7-round AES by exploiting the zero-difference property.
BibTeX
@article{tosc-2022-32079,
  title={New Key-Recovery Attack on Reduced-Round AES},
  journal={IACR Transactions on Symmetric Cryptology},
  publisher={Ruhr-Universität Bochum},
  volume={2022, Issue 2},
  pages={43-62},
  url={https://tosc.iacr.org/index.php/ToSC/article/view/9713},
  doi={10.46586/tosc.v2022.i2.43-62},
  author={Navid Ghaedi Bardeh and Vincent Rijmen},
  year=2022
}