New Related-Key Boomerang Attacks on AES

Michael Gorski; Stefan Lucks

Paper 2008/438

New Related-Key Boomerang Attacks on AES

Michael Gorski and Stefan Lucks

Abstract

In this paper we present two new attacks on round reduced versions of the AES. We present the first application of the related-key boomerang attack on 7 and 9 rounds of AES-192. The 7-round attack requires only 2^{18} chosen plaintexts and ciphertexts and needs 2^{67.5} encryptions. We extend our attack to nine rounds of AES-192. This leaves to a data complexity of 2^{67} chosen plaintexts and ciphertexts using about 2^{143.33} encryptions to break 9 rounds of AES-192.

Metadata

Available format(s): PDF
Category: Secret-key cryptography
Publication info: Published elsewhere. IndoCrypt 2008
Keywords: block ciphers AES differential cryptanalysis related-key boomerang attack
Contact author(s): Michael Gorski @ uni-weimar de
History: 2008-10-20: received
Short URL: https://ia.cr/2008/438
License: CC BY

BibTeX

@misc{cryptoeprint:2008/438,
      author = {Michael Gorski and Stefan Lucks},
      title = {New Related-Key Boomerang Attacks on {AES}},
      howpublished = {Cryptology {ePrint} Archive, Paper 2008/438},
      year = {2008},
      url = {https://eprint.iacr.org/2008/438}
}