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Re: [PATCH] mac80211: Validate michael MIC before attempting packet decode.

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On Tue, 2017-05-09 at 14:16 -0400, Michael Skeffington wrote:
> In order to allow wpa_supplicant to correctly identify a perceived
> WPA TKIP key
> recovery attack the michael MIC must be checked before the packet
> decode is
> attempted.  A packet with an invalid MIC will always fail a decrypt
> check which
> previously was being checked first.  Therefore the MIC failure bit of
> status flags
> describing the error would remain unset.

This isn't how the Michael MIC works. I have no idea what problem
you're trying to solve, but this is not the solution.

johannes



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