Near-Collision Attack on the Compression Function of Dynamic SHA2

Hongbo Yu; Xiaoyun Wang

Paper 2009/179

Near-Collision Attack on the Compression Function of Dynamic SHA2

Hongbo Yu and Xiaoyun Wang

Abstract

In this paper, we present a near-collision attack on the compression functions of Dynamic SHA2 for all the output sizes. For the Dynamic SHA2-224/256, the complexity is about $2^{45}$ operations and for the Dynamic SHA2-384/512, the complexity is about $2^{75}$.

Metadata

Available format(s): PDF PS
Category: Secret-key cryptography
Publication info: Published elsewhere. Unknown where it was published
Contact author(s): yuhongbo @ mail tsinghua edu cn
xiaoyunwang @ mail tsinghua edu cn
History: 2009-04-24: received
Short URL: https://ia.cr/2009/179
License: CC BY

BibTeX

@misc{cryptoeprint:2009/179,
      author = {Hongbo Yu and Xiaoyun Wang},
      title = {Near-Collision Attack on the Compression Function of Dynamic {SHA2}},
      howpublished = {Cryptology {ePrint} Archive, Paper 2009/179},
      year = {2009},
      url = {https://eprint.iacr.org/2009/179}
}