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Paper 2003/220

A short comment on the affine parts of SFLASH^{v3}

Willi Geiselmann and Rainer Steinwandt

Abstract

In [http://eprint.iacr.org/2003/211/] SFLASH^{v3} is presented, which supersedes SFLASH^{v2}, one of the digital signature schemes in the NESSIE Portfolio of recommended cryptographic primitives. We show that a known attack against the affine parts of SFLASH^{v1} and SFLASH^{v2} carries over immediately to the new version SFLASH^{v3}: The 861 bit representing the affine parts of the secret key can easily be derived from the public key alone.

Metadata
Available format(s)
PDF PS
Category
Public-key cryptography
Publication info
Published elsewhere. Unknown where it was published
Keywords
digital signaturescryptanalysis
Contact author(s)
steinwan @ ira uka de
History
2003-10-10: received
Short URL
https://ia.cr/2003/220
License
Creative Commons Attribution
CC BY
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