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draft-ietf-mixer-images-01.txt
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draft X.400 image body parts Aug 96
Title
Thu Aug 15 15:47:25 MET DST 1996
Harald Tveit Alvestrand
UNINETT
Harald.T.Alvestrand@uninett.no
Status of this Memo
This draft document is being circulated for comment.
Please send comments to the author, or to the MIXER list <ietf-
mixer@innosoft.com>.
The following text is required by the Internet-draft rules:
This document is an Internet Draft. Internet Drafts are working
documents of the Internet Engineering Task Force (IETF), its
Areas, and its Working Groups. Note that other groups may also
distribute working documents as Internet Drafts.
Internet Drafts are draft documents valid for a maximum of six
months. Internet Drafts may be updated, replaced, or obsoleted by
other documents at any time. It is not appropriate to use
Internet Drafts as reference material or to cite them other than
as a "working draft" or "work in progress."
Please check the I-D abstract listing contained in each Internet
Draft directory to learn the current status of this or any other
Internet Draft.
The file name of this version is draft-ietf-mixer-images-01.txt
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draft X.400 image body parts Aug 96
1. Introduction
This document contains the body parts defined in RFC 1495 for
carrying image formats that were originally defined in MIME
through an X.400 system.
This document is an Experimental standard; if it turns out to be
useful and widely deployed, it can be moved onto the standards
track.
It also documents the OIDs assigned to these data formats as FTAM
body parts, which allow the MIME types to be converted to FTAM
body parts; this will probably be more useful than the new body
parts defined here.
2. Newly defined X.400 body parts
2.1. The JPEG body part
The following Extended Body Part is defined for JPEG data streams.
It has no parameters.
jpeg-body-part EXTENDED-BODY-PART-TYPE
DATA OCTET STRING
::= mime-jpeg-body
mime-jpeg-body OBJECT IDENTIFIER ::=
{ mixer-bp-data 3 }
The content is as defined in [MIME].
2.2. The GIF body part
The following Extended Body Part is defined for GIF data streams.
It has no parameters.
gif-body-part EXTENDED-BODY-PART-TYPE
DATA OCTET STRING
::= mime-gif-body
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draft X.400 image body parts Aug 96
mime-gif-body OBJECT IDENTIFIER ::=
{ mixer-bp-data 4 }
The content is as defined in [MIME].
3. Defined equivalences with MIME types
3.1. image/jpeg - jpeg-body-part
X.400 Body Part: Extended Body Part, OID jpeg-body-part
MIME Content-Type: image/jpeg
Conversion: None
3.2. image/jpeg - FTAM EMA JPEG
X.400 Body Part: FTAM EMA JPEG
MIME Content-Type: image/jpeg
Conversion: None
The OID assigned to JPEG by EMA in [MAWG] is
{ ema objects(2) messaging (2) attachments(1) jpeg-image(6) }
while EMA's OID is
{ joint-iso-ccitt(2) country(16) us(840) organization(1)
ema(113694) }
making the total OID, numeric only
{ 2 16 840 1 113694 2 2 1 6 }
3.3. image/gif - gif-body-part
X.400 Body Part: Extended Body Part, OID gif-body-part
MIME Content-Type: image/gif
Conversion: None
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draft X.400 image body parts Aug 96
3.4. image/gif - FTAM EMA GIF
X.400 Body Part: FTAM EMA GIF
MIME Content-Type: image/jpeg
Conversion: None
The OID assigned to JPEG by EMA in [MAWG] is
{ ema objects(2) messaging (2) attachments(1) gif-image(4) }
4. Security considerations
Security issues are not consiered in this memo.
5. REFERENCES
[MIME]
RFC 1521: N. Borenstein, N. Freed, "MIME (Multipurpose
Internet Mail Extensions) Part One: Mechanisms for
Specifying and Describing the Format of Internet Message
Bodies", 09/23/1993
[MAWG]
Electronic Messaging Association Message Attachment Working
Group (MAWG): File Transfer Body Part Feasibility Project
Guide - version 1.5.1 - March 1996
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