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EUROCRYPT
1998
Springer
15 years 10 months ago
How to Improve an Exponentiation Black-Box
Abstract. In this paper we present a method for improving the performance of RSA-type exponentiations. The scheme is based on the observation that replacing the exponent d by d = d...
Gérard D. Cohen, Antoine Lobstein, David Na...
EUROCRYPT
2007
Springer
15 years 9 months ago
Cryptanalysis of SFLASH with Slightly Modified Parameters
SFLASH is a signature scheme which belongs to a family of multivariate schemes proposed by Patarin et al. in 1998 [9]. The SFLASH scheme itself has been designed in 2001 [8] and ha...
Vivien Dubois, Pierre-Alain Fouque, Jacques Stern
EUROCRYPT
1998
Springer
15 years 10 months ago
Strengthened Security for Blind Signatures
Abstract. Provable security is a very nice property for cryptographic protocols. Unfortunately, in many cases, this is at the cost of a considerable loss in terms of efficiency. Mo...
David Pointcheval
EUROCRYPT
1998
Springer
15 years 10 months ago
Divertible Protocols and Atomic Proxy Cryptography
Abstract. First, we introduce the notion of divertibility as a protocol property as opposed to the existing notion as a language property (see Okamoto, Ohta [OO90]). We give a defi...
Matt Blaze, Gerrit Bleumer, Martin Strauss
EUROCRYPT
1998
Springer
15 years 10 months ago
A Cryptosystem Based on Non-maximal Imaginary Quadratic Orders with Fast Decryption
We introduce a new cryptosystem with trapdoor decryption based on the di culty of computing discrete logarithms in the class group of the non-maximal imaginary quadratic order O q ...
Detlef Hühnlein, Michael J. Jacobson Jr., Sac...