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NON-MALLEABLE RANDOMNESS EXTRACTORS
 
 
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Uniwersytet Warszawski
 
 
Publication date: 2014-12-05
 
 
SBN 2014;6(2): 227-238
 
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ABSTRACT
We give an unconditional construction of a non-malleable extractor improving the solution from the recent paper Privacy Amplification and Non-Malleable Extractors via Character Sums by Dodis et al. (FOCS’11). There, the authors provide the first explicit example of a non-malleable extractor - a cryptographic primitive that significantly strengthens the notion of a classical randomness extractor. In order to make the extractor robust, so that it runs in polynomial time and outputs a linear number of bits, they rely on a certain conjecture on the least prime in a residue class. In this paper we present a modification of their construction that allows to remove that dependency and address an issue we identified in the original development.
 
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ISSN:2082-2677
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