Re: [Evolution] pgp unusable?

[Jeffrey Stedfast <fejj ximian com>]

On Thu, 2001-11-29 at 21:27, Thomas O'Dowd wrote:
> On Thu, Nov 29, 2001 at 08:33:42PM -0500, Jeffrey Stedfast wrote:
> > On Thu, 2001-11-29 at 20:15, Thomas O'Dowd wrote:
> > > It takes care of escaping the "^From " for you so you don't have to
> > > worry about it.
> >
> > That's nice, but it doesn't take care of QP encoding it and I'm not too
> > sure that it CRLF encodes it either.
>
> Hi Jeff,
>
> the -t option on pgp takes care of the crlf issue for you. With respect
> to the quoted printable, you sign first, then if you want everything 7bit
> clean you qp it. The receiving mailers will unqp it first if the header is
> there. Unfortunately for evolution, you don't do this so the signature 
> won't validate. I would argue that evolution is wrong in this case. You
> might argue that this is exactly the problem with one mailer doing this
> and the other mailer doing something else, but I think this is the only
> rule that actually makes sense. (ie, unqp and then validate or sign and
> then qp depending on which way you are going)
>
> Take the example where your mta server accepts 8bit and the mailer
> pgp signs your message leaving it as 8bit. If it goes 8bit all the
> way to the receiver there is no problem. Then, there is the problem
> where an intermediatory mta will decide to translate your 8bit mail
> to qp. This is pretty normal, it will add the quoted-printable header
> and your mailer will recieve the mail. If they don't unqp it first
> then pgp won't validate, which is why the majority of mailers handling
> inline pgp, unqp first before passing it to pgp for validation. I
> think evolution is doing the wrong thing here.

You might try reading rfc2015 before saying Evolution does the wrong
thing, rfc2015 (PGP/MIME) specifies that the client MUST QP/Base64
encode the content before signing.

So no, we are not wrong at all.

Jeff

> Tom.
> -- 
> Thomas O'Dowd. - Nooping - http://nooper.com
> tom nooper com - Testing - http://nooper.co.jp/labs
>
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-- 
Jeffrey Stedfast
Evolution Hacker - Ximian, Inc.
fejj ximian com  - www.ximian.com