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Preprints, Working Papers, ... Year : 2019

Improved Low-qubit Hidden Shift Algorithms

Xavier Bonnetain
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Abstract

Hidden shift problems are relevant to assess the quantum security of various cryptographic constructs. Multiple quantum subexponential time algorithms have been proposed. In this paper, we propose some improvements on a polynomial quantum memory algorithm proposed by Childs, Jao and Soukharev in 2010. We use subset-sum algorithms to significantly reduce its complexity. We also propose new tradeoffs between quantum queries, classical time and classical memory to solve this problem.
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Dates and versions

hal-02400414 , version 1 (09-12-2019)

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Xavier Bonnetain. Improved Low-qubit Hidden Shift Algorithms. 2019. ⟨hal-02400414⟩

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