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On the Complexity of the Hybrid Approach on HFEv-
Multivariate Cryptography HFEv- Direct Attack
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2017/11/28
The HFEv- signature scheme is one of the most promising candidates for post-quantum digital signatures. Most notably here is the short signature size of the scheme. It has long been known that direct ...
Improved Cryptanalysis of HFEv- via Projection
Multivariate Cryptography HFEv- MinRank
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2017/11/28
The HFEv- signature scheme is one of the most studied multivariate schemes and one of the major candidates for the upcoming standardization of post-quantum digital signature schemes. In this paper, we...
On the Security of HFE, HFEv- and Quartz
asymmetric cryptography finite fields multivariate cryptanalysis
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2009/4/15
Quartz is a signature scheme based on an HFEv- trapdoor
function published at Eurocrypt 1996. In this paper we study ”inversion”
attacks for Quartz, i.e. attacks that solve the system of multivariat...