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OSIDH is not vulnerable to Kup. algorithms #31

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GiacomoPope opened this issue Sep 1, 2022 · 2 comments
Open

OSIDH is not vulnerable to Kup. algorithms #31

GiacomoPope opened this issue Sep 1, 2022 · 2 comments

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@GiacomoPope
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Highlighted by Peter on twitter: https://twitter.com/kutasp/status/1565330594824802306
Attack said to be fully exponential in the OSDIH paper: https://eprint.iacr.org/2020/985.pdf
@defeo
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defeo commented Sep 1, 2022

Oh, right. OSIDH is not really based on the oriented vectorization problem as defined in Benjamin's paper. I think an ad-hoc assumption is needed for it.

GiacomoPope added a commit that referenced this issue Sep 2, 2022
@GiacomoPope
add assumption for OSIDH to address issue #31
b7df3f0
@GiacomoPope
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Should be fixed with the latest push, but considering that you understand this better than me by magnitudes, maybe have a quick look before I close it.

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@defeo @GiacomoPope