Preliminary Analysis of DHA-256

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Paper 2005/398

Preliminary Analysis of DHA-256

IAIK Krypto Group

Abstract

DHA-256 was presented at the Cryptographic Hash Workshop hosted by NIST in November 2005. DHA-256 (Double Hash Algorithm) was proposed to enhance the security of SHA-256. We present a preliminary analysis of the message expansion and give an alternative 9-step local collision for DHA-256.

Metadata

Available format(s): PDF
Publication info: Published elsewhere. Unknown where it was published
Keywords: hash functions
Contact author(s): Norbert Pramstaller @ iaik tugraz at
History: 2005-11-07: revised; 2005-11-05: received; See all versions
Short URL: https://ia.cr/2005/398
License: CC BY