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Practical Cryptanalysis of SFLASH
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Abstract: | In this paper, we present a practical attack on the signature scheme SFLASH proposed by Patarin, Goubin and Courtois in 2001 following a design they had introduced in 1998. The attack only needs the public key and requires about one second to forge a signature for any message, after a one-time computation of several minutes. It can be applied to both SFLASHv2 which was accepted by NESSIE, as well as to SFLASHv3 which is a higher security version. |
BibTeX
@misc{eprint-2007-13423, title={Practical Cryptanalysis of SFLASH}, booktitle={IACR Eprint archive}, keywords={public-key cryptography / Cryptanalysis multivariate schemes}, url={http://eprint.iacr.org/2007/141}, note={ Pierre-Alain.Fouque@ens.fr 13623 received 20 Apr 2007}, author={Vivien Dubois and Pierre-Alain Fouque and Adi Shamir and Jacques Stern}, year=2007 }