[RndTbl] sshd: Corrupted MAC on input.

[Hartmut W Sager]

Oops, *sorry Gilbert*, I looked at this thread again, and it was *your*
position on checksums that I'm supporting.  Maybe I have some bad/failing
Chinese capacitors in my head.  :)

Hartmut W Sager - Tel +1-204-339-8331


On Fri, 31 Jul 2020 at 08:44, Hartmut W Sager <hwsager at marityme.net> wrote:

> >> TCP checksums aren't perfect, and with very large transfers, there is
> >> a statistically significant probability of errors getting through,
>
> > I think they are 32-bit checksums in TCP?  Yes, between the
> lower layer checksums and TCP my gut says errors should be rare.  Maybe
> the math will spell differently though on really junky connections...
> However short of wireless, no one should really have that junky a
> connection anymore.
>
> If those "32-bit checksums" are truly just checksums, i.e., sums mod 2^32,
> then my math knowledge definitely agrees with Trevor.  A simple bit-flip of
> two bits in the same bit position throughout the entire file would cancel
> each other and go undetected.  And for a large file, that probability is
> very significant.  As for the unlikelihood of "really junky connections"
> nowadays, well, that's what checksums, CRCs, etc., are for, as a "just in
> case" the unlikely event does occur, in addition to the occurrence of the
> more likely events.
>
> Hartmut W Sager - Tel +1-204-339-8331
>
>
> On Fri, 31 Jul 2020 at 04:11, Trevor Cordes <trevor at tecnopolis.ca> wrote:
>
>> On 2020-07-30 Gilbert E. Detillieux wrote:
>>
>>
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