FLASH, a Fast Multivariate Signature Algorithm
CT-RSA 2001 Proceedings of the 2001 Conference on Topics in Cryptology: The Cryptographer's Track at RSA
CRYPTO '99 Proceedings of the 19th Annual International Cryptology Conference on Advances in Cryptology
C*-+ and HM: Variations Around Two Schemes of T. Matsumoto and H. Imai
ASIACRYPT '98 Proceedings of the International Conference on the Theory and Applications of Cryptology and Information Security: Advances in Cryptology
Differential power analysis of HMAC based on SHA-2, and countermeasures
WISA'07 Proceedings of the 8th international conference on Information security applications
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Within the NESSIE (New European Schemes for Signatures, Integrity, and Encryption) project, the signature schemes FLASH and SFLASH have been proposed for the use on low-cost smartcards. We show theoretically how differential power analysis (DPA) can be used to reveal the complete secret key in possible smartcard implementations of FLASH and SFLASH. To our knowledge no smartcard implementations of these schemes are available at the moment, so an experimental verification of this attack has not been done so far.