New Key-Recovery Attack on Reduced-Round AES

Navid Ghaedi Bardeh; Vincent Rijmen

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: 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},
      url = {https://eprint.iacr.org/2022/487}
}