Titlebook: Advances in Cryptology – EUROCRYPT 2017; 36th Annual Internat Jean-Sébastien Coron,Jesper Buus Nielsen Conference proceedings 2017 Internat

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0302-9743 ic cryptography; security models; blockchain; memory hard functions; symmetric-key constructions; obfuscation; quantum cryptography; public-key encryption and key-exchange..978-3-319-56616-0978-3-319-56617-7Series ISSN 0302-9743 Series E-ISSN 1611-3349

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https://doi.org/10.1007/978-3-642-66772-5rovide new upper and lower bounds on the . of several important candidate iMHFs from the literature. We give the first lower bounds on the memory hardness of the Catena and Balloon Hashing functions in a parallel model of computation and we give the first lower bounds of any kind for (a version) of

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Cardiomyopathy and Myocardial Biopsyon. We observe that this problem has a number of attractive features in this cryptographic context, including random self-reducibility, hardness amplification, and—in many cases of interest—a reduction from the “search version” to the “decisional version.” We then establish, under this assumption, t

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Cardiopatie congenite dell‘a(chǎn)dulto We show that sub-exponentially secure . for circuits and sub-exponentially secure re-randomizable encryption schemes (Re-randomizable encryption schemes can be instantiated under standard assumptions such as DDH, LWE.) imply single-program patchable indistinguishability obfuscation; and we show tha