A New Related-Key Boomerang Distinguishing Attack of Reduced-Round Threefish-256

Shusheng Liu; Libin Wang; Zheng Gong

Paper 2011/323

A New Related-Key Boomerang Distinguishing Attack of Reduced-Round Threefish-256

Shusheng Liu, Libin Wang, and Zheng Gong

Abstract

On Nov 2007, NIST announced the SHA-3 competition to select a new hash standard as a replacement of SHA-2. On Dec 2010, five submissions have been selected as the final round candidates, including Skein, which have components based on ARX. In this paper, a new related-key boomerang distinguishing attack is proposed on 31-round Threefish-256 with a time complexity of about $2^{234}$. Our improved attack is based on the efficient algorithms for calculating differentials of modular addition.

Note: Updated version

Metadata

Available format(s): PDF
Publication info: Published elsewhere. Unknown where it was published
Keywords: Skein Differential analysis Related key Boomerang attack
Contact author(s): cis gong @ gmail com
History: 2011-11-20: last of 2 revisions; 2011-06-17: received; See all versions
Short URL: https://ia.cr/2011/323
License: CC BY

BibTeX

@misc{cryptoeprint:2011/323,
      author = {Shusheng Liu and Libin Wang and Zheng Gong},
      title = {A New Related-Key Boomerang Distinguishing Attack of Reduced-Round Threefish-256},
      howpublished = {Cryptology ePrint Archive, Paper 2011/323},
      year = {2011},
      note = {\url{https://eprint.iacr.org/2011/323}},
      url = {https://eprint.iacr.org/2011/323}
}