Paper 2022/487

New Key-Recovery Attack on Reduced-Round AES

Navid Ghaedi Bardeh
Vincent Rijmen
Abstract

A new fundamental 4-round property of AES, called the zero-difference property, was introduced by R{\o}njom, 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.

Metadata
Available format(s)
PDF
Category
Secret-key cryptography
Publication info
A minor revision of an IACR publication in TOSC 2022
Keywords
SPN AES Secret-Key model Zero-difference cryptanalysis Related differences Related differentials
Contact author(s)
navid ghaedibardeh @ gmail com
History
2022-09-15: last of 2 revisions
2022-04-23: received
See all versions
Short URL
https://ia.cr/2022/487
License
Creative Commons Attribution
CC BY

BibTeX

@misc{cryptoeprint:2022/487,
      author = {Navid Ghaedi Bardeh and Vincent Rijmen},
      title = {New Key-Recovery Attack on Reduced-Round AES},
      howpublished = {Cryptology ePrint Archive, Paper 2022/487},
      year = {2022},
      note = {\url{https://eprint.iacr.org/2022/487}},
      url = {https://eprint.iacr.org/2022/487}
}
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