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Further clarification on Mantin's Digraph Repetition Bias in RC4

机译:进一步阐明了Mantin在RC4中的数字重复偏差

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摘要

In this paper we provide a theoretical argument towards an unsolved question related to Mantin's "Digraph Repetition Bias" (Eurocrypt 2005) that is observed in the key-stream of RC4. The open question, that depends on the observation that arrival of four consecutive same bytes (of the formAAAA) in RC4 key-stream is slightly negatively biased, was posed by Bricout et al (Des. Codes Cryptogr. 86:743-770, 2018) in 2016. Moreover, for the first time, we consider the "Reverse Digraph Repetition Bias" and show that there is significant negative bias in arrival ofABBA(A, Btwo distinct bytes) in RC4 key-stream.
机译:在本文中,我们为与Mantin的“Digraph RepeTition Bias”(Eurocrypt 2005)相关的未解决问题提供了一个理论论点,该问题在RC4的键流中观察到的。开放的问题,这取决于观察到rc4键流中的四个连续相同字节(Formaaaa的formaaaa)略微偏置,由Bricout等人(des。Codes Cryptogr。86:743-770,2018 )在2016年。此外,我们首次考虑“反向数字重复偏见”并表明RC4键流中的ABBA(A,BTWO不同字节)到达存在显着的负偏差。

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