International Association for Cryptologic Research

International Association
for Cryptologic Research

CryptoDB

Paper: A Key Substitution Attack on SFLASH^{v3}

Authors:
Willi Geiselmann
Rainer Steinwandt
Download:
URL: http://eprint.iacr.org/2003/245
Search ePrint
Search Google
Abstract: A practical key substitution attack on SFLASH^{v3} is described: Given a valid (message, signature) pair (m,\sigma) for some public key v_0, one can derive another public key v_1 (along with matching secret data) such that (m,\sigma) is also valid for v_1. The computational effort needed for finding such a `duplicate' key is comparable to the effort needed for ordinary key generation.
BibTeX
@misc{eprint-2003-11958,
  title={A Key Substitution Attack on SFLASH^{v3}},
  booktitle={IACR Eprint archive},
  keywords={public-key cryptography / digital signatures, cryptanalysis},
  url={http://eprint.iacr.org/2003/245},
  note={ steinwan@ira.uka.de 12382 received 26 Nov 2003},
  author={Willi Geiselmann and Rainer Steinwandt},
  year=2003
}