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Re: [openpgp] Tag indicating a MIME content

Derek Atkins <derek@ihtfp.com> Thu, 07 July 2016 14:51 UTC

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From: Derek Atkins <derek@ihtfp.com>
To: Vincent Breitmoser <look@my.amazin.horse>
References: <87r3b5q2zq.fsf@wheatstone.g10code.de> <20160707103506.GA29299@littlepip.fritz.box>
Date: Thu, 07 Jul 2016 10:50:32 -0400
In-Reply-To: <20160707103506.GA29299@littlepip.fritz.box> (Vincent Breitmoser's message of "Thu, 7 Jul 2016 12:35:06 +0200")
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Subject: Re: [openpgp] Tag indicating a MIME content
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Hi,

+1 on this proposal, but in response to Vincent I would propose that we
just remove the article completely, so it reads:

  ...  If it is 'm' (0x6d), then ....

-derek

Vincent Breitmoser <look@my.amazin.horse> writes:

> I support this.
>
> Nitpick, should this be "an" rather than "a" m?
>
>  - V
>
> Werner Koch(wk@gnupg.org)@Thu, Jul 07, 2016 at 10:14:17AM +0200:
>> Hi,
>> 
>> I recall that an indication for a MIME content has been proposed many
>> years ago but might have been forgotten.  Thus I propose this small
>> change for 4880bis:
>> 
>> --8<---------------cut here---------------start------------->8---
>> diff --git a/middle.mkd b/middle.mkd
>> index 033f11f..5519be3 100644
>> --- a/middle.mkd
>> +++ b/middle.mkd
>> @@ -2156,7 +2156,8 @@ ## {5.9} Literal Data Packet (Tag 11)
>>      may need line ends converted to local form, or other text-mode
>>      changes.  The tag 'u' (0x75) means the same as 't', but also
>>      indicates that implementation believes that the literal data
>> -    contains UTF-8 text.
>> +    contains UTF-8 text.  If it is a 'm' (0x6d), then it contains a
>> +    MIME message body part [](#RFC2045).
>>  
>>      Early versions of PGP also defined a value of 'l' as a 'local'
>>      mode for machine-local conversions.  RFC 1991 [](#RFC1991)
>> --8<---------------cut here---------------end--------------->8---
>> 
>> 
>> MIME has several advantages: Interpretation of the plaintext can be done
>> without considering the context (e.g. part of a PGP/MIME message or
>> standalone).  The encoding of the message can be described without
>> resorting to the unprotected armor header.
>> 
>> 
>> Shalom-Salam,
>> 
>>    Werner
>> 
>> -- 
>> Die Gedanken sind frei.  Ausnahmen regelt ein Bundesgesetz.
>>  /* Join us at OpenPGP.conf  <https://openpgp-conf.org> */
>> 
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-- 
       Derek Atkins                 617-623-3745
       derek@ihtfp.com             www.ihtfp.com
       Computer and Internet Security Consultant

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