[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
Mon May 4 20:02:45 AEST 2015


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

Ramya <ramyakrc at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Hardware|PPC                         |ARM

--- Comment #2 from Ramya <ramyakrc at gmail.com> ---
Hi

Client OS – Linux
Server OS - VxWorks
Compiler  – gcc compiler
Processor - ARM

We tried to SSH from clent(Linux) to server(VxWorks)with the following
command.
ssh -v -m umac-64 at openssh.com xx.xx.xx.xx

We found that before MAC computation, final value of input
buffer(input) after buffer_consume is Offset as 32 and End as 40.
MAC length was set as 8.

But the computed MAC looks different when compared with the input MAC.
Hence the below error was displayed and SSH was disconnected.
"Disconnecting: Corrupted MAC on input".

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