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Miyaguchi Preneel #42

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merged 3 commits into from Sep 8, 2018
Merged

Miyaguchi Preneel #42

merged 3 commits into from Sep 8, 2018

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@HarryR
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@HarryR HarryR commented Sep 7, 2018

Fixes #37

@HarryR HarryR merged commit a686fd3 into master Sep 8, 2018
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@HarryR HarryR deleted the Miyaguchi-Preneel branch Sep 8, 2018
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@daira daira left a comment

12 rounds are not even remotely enough. The MiMC paper says you need ceiling(log3(p)) rounds for e = 5 (that's not a typo; definitely log3), and ceiling(log7(p)) rounds for e = 7.

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@HarryR
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@HarryR HarryR commented Nov 24, 2018

Yup I 100% agree here, 12 rounds are not enough.

On my todo list is to increase it significantly.

There is a very practical attack against 12 rounds which requires only 128gb of RAM.

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2 participants