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Paper 2007/141
Practical Cryptanalysis of SFLASH
Vivien Dubois and Pierre-Alain Fouque and Adi Shamir and Jacques Stern
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.
Metadata
- Available format(s)
- Category
- Public-key cryptography
- Publication info
- Published elsewhere. Unknown where it was published
- Keywords
- Cryptanalysis multivariate schemes
- Contact author(s)
- Pierre-Alain Fouque @ ens fr
- History
- 2007-04-20: received
- Short URL
- https://ia.cr/2007/141
- License
-
CC BY