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From: "Dave Korn" <dave DOT korn AT artimi DOT com>
To: <cygwin AT cygwin DOT com>
Subject: RE: Is cygwin-ml softwere altering message content?
Date: Fri, 18 Aug 2006 12:52:21 +0100
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On 18 August 2006 12:42, Max Bowsher wrote:

> Al Slater wrote:
>> Max Bowsher wrote:
>>>> Václav Haisman wrote:
>>>>> I have noticed that sometimes my PGP signed messages do not arrive
>>>>> intact from cygwin-ml. Is this a cygwin-ml software problem?
>>>> Yes, something in the ML software seems to like re-wrapping lines. It's
>>>> breaking my PGP signatures too.
>> 
>> Your signature looks good from here
> 
> Amusingly ironic :-)
> 
> Seems that that particular message lacked any lines long enough to
> trigger the re-wrap.
> 
> Let me try to force a re-wrap to occur here:
>>
23456789A123456789B123456789C123456789D123456789E123456789F123456789G123456789
H
> 

  Didn't work.  Try some trailing spaces.

> The specific nature of the problem seems to be that quoted-printable
> MIME parts seem to be getting unencoded and then re-encoded by the
> sourceware mail system. In doing so, the wrapping policy applied by the
> original mailer is destroyed, and sourceware's own is imposed.
> 
> Clearly this is a bad thing, since unless the results of the policies
> are identical, the validity of any signature is destroyed.

  Are we really sure that there isn't incorrect decoding going on at the
receive end, and that the two forms aren't actually supposed to decode to the
same result?

> Is there a suitable sourceware administrator watching this thread, or
> should I summarize the issue to overseers@ ?

  I think we need to understand it better.  When I tried to decode your
signature, that "looked good from here" to Al, I got an error.  So I think
there's at least some client-dependency here.

    cheers,
      DaveK
-- 
Can't think of a witty .sigline today....


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