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Title:
A New Class of Multivariate Public Key Cryptosystem Constructed on the Basis of Message-Dependent Transformation
Authors: Masao KASAHARA
Abstract:In this paper, a new class of Public-Key Cryptosystem(PKC) based on Random Simultaneous Equation of degree g(RSE(g)PKC) is presented. The proposed scheme uses a new class of trap-doors based on two classes of transformation, i.e. random transformation and message-dependent random transformation. For constructing the proposed scheme,random transformations X and Ψ are used. The transformation Ψ would yield a breakthrough to a field of multivaliate cryptosystem in a sense that the transformation is dependent on a message. Namely it is a message-dependent transformation on the basis of random coding. We show that the proposed PKC’s, can be secure against the various excellent attacks such as the attack based on the Gr¨obner bases calculation(Gröbner bases attack, GB attack), Patarin’s attack and Braeken-Wolf-Preneel attack, due to the random transformations using new trap-doors.
ePrint: https://eprint.iacr.org/2011/690
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