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PKC
2011
Springer
197views Cryptology» more  PKC 2011»
13 years 1 months ago
Cryptanalysis of Multivariate and Odd-Characteristic HFE Variants
We investigate the security of a generalization of HFE (multivariate and odd-characteristic variants). First, we propose an improved version of the basic Kipnis-Shamir key recovery...
Luk Bettale, Jean-Charles Faugère, Ludovic ...
PKC
2005
Springer
156views Cryptology» more  PKC 2005»
14 years 4 months ago
Cryptanalysis of HFEv and Internal Perturbation of HFE
Hidden field equation (HFE) multivariable cryptosystems were first suggested by Patarin. Kipnis and Shamir showed that to make the cryptosystem secure, a special parameter D of a...
Jintai Ding, Dieter Schmidt
IACR
2011
161views more  IACR 2011»
12 years 10 months ago
Roots of Square: Cryptanalysis of Double-Layer Square and Square+
Abstract. Square is a multivariate quadratic encryption scheme proposed in 2009. It is a specialization of Hidden Field Equations by using only odd characteristic elds and also X2...
Enrico Thomae, Christopher Wolf