[Bug 2392] unable to ssh with umac hash algorithm. error:Disconnecting packet:corrupted MAC on input.

bugzilla-daemon at mindrot.org bugzilla-daemon at mindrot.org
Sun May 3 14:01:24 AEST 2015


https://bugzilla.mindrot.org/show_bug.cgi?id=2392

Darren Tucker <dtucker at zip.com.au> changed:

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                 CC|                            |dtucker at zip.com.au

--- Comment #1 from Darren Tucker <dtucker at zip.com.au> ---
You'd need to provide a lot more information before we could even
guess.

What OSes are on each of the client and server?  Compilers?  Hardware? 
Network?

Both versions you cite are quite old although I am not aware of any
bugs affecting umac.

There have been many causes found for this in the past, ranging from
broken hardware, ethernet drivers, network equipment, memory and
compilers.  For some examples see:
https://bugzilla.mindrot.org/show_bug.cgi?id=845

Given that it happens with umac but not hmac, I'd guess it's a compiler
bug, but that's pure speculation.

As for workarounds: hmac seems to not have that problem, why not just
use that?

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