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Open Quantum Systems Decoherence

Quantum Generic Attacks on Feistel Schemes

arXiv

Authors: Hong Wang, Zhi Ma

Year

2010

Paper ID

10947

Status

Preprint

Abstract Read

~2 min

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Abstract

The Feistel scheme is an important structure in the block ciphers. The security of the Feistel scheme is related to distinguishability with a random permutation. In this paper, efficient quantum algorithms for distinguishing classical 3,4-round and unbalanced Feistel scheme with contracting functions from random permutation are proposed. Our algorithms realize an exponential speed-up over classical algorithms for these problems. Furthermore, the method presented in this paper can also be used to consider unbalanced Feistel schemes with expanding functions.

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This paper contributes to the Open Quantum Systems & Decoherence research area in the Quantum Articles archive.
It adds a 2010 reference point for readers tracking recent quantum research.
The Feistel scheme is an important structure in the block ciphers.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1010.1624 [2] arXiv https://arxiv.org/abs/1010.1624 [3] Publisher https://arxiv.org/abs/1010.1624

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