New Key-Recovery Attack on Reduced-Round AES
Journal article, Peer reviewed
Published version
Åpne
Permanent lenke
https://hdl.handle.net/11250/3048858Utgivelsesdato
2022Metadata
Vis full innførselSamlinger
- Department of Informatics [917]
- Registrations from Cristin [9489]
Originalversjon
IACR Transactions on Symmetric Cryptology (ToSC). 2022, 2022 (2), 43-62. 10.46586/tosc.v2022.i2.43-62Sammendrag
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.