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Nonuniform Indistinguishability and Unpredictability Hardcore Lemmas: New Proofs and Applications to Pseudoentropy
Hardcore Lemmas Pseudoentropy
2016/1/4
Using only the standard min-max theorem and some basic facts about convex approximations in Lp spaces, we provide alternative modular proofs and some generalizations of these results in the nonuniform...
We consider the task of deriving a key with high HILL entropy
(i.e., being computationally indistinguishable from a key with high
min-entropy) from an unpredictable source.
Recently Bernstein [4] has provided a simpler proof of unpredictability of CBC construc-
tion [3] which is giving insight of the construction. Unpredictability of any function intuitively means that ...