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On a new fast public key cryptosystem

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arxiv 1508.07756 v2 pith:7BB2UY3U submitted 2015-08-31 cs.CR

classification cs.CR
keywords algorithmfastpubliccryptosystemexchangemoddiv2invoperationdefine
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abstract

This paper presents a new fast public key cryptosystem namel : a key exchange algorithm, a public key encryption algorithm and a digital signature algorithm, based on the difficulty to invert the following function: $$F(x) =(a\times x)Mod(2^p)Div(2^q).$$ Mod is modulo operation , Div is integer division operation , a , p and q are integers where $( p > q )$. We define p and q values for which ModDiv2Inv can be the hardest. We then present ModDiv2Kex, a new fast key exchange algorithm based on ModDiv2Inv. In this paper we also evaluate the hardness of this problem by reducing it to SAT .

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