Movatterモバイル変換

Network Working Group                                    H. AlvestrandRequest for Comments: 2158                                     UNINETTCategory: Standards Track                                 January 1998X.400 Image Body PartsStatus of this Memo   This document specifies an Internet standards track protocol for the   Internet community, and requests discussion and suggestions for   improvements.  Please refer to the current edition of the "Internet   Official Protocol Standards" (STD 1) for the standardization state   and status of this protocol.  Distribution of this memo is unlimited.Copyright Notice   Copyright (C) The Internet Society (1998).  All Rights Reserved.1.  Introduction   This document contains the body parts defined inRFC 1495 for   carrying image formats that were originally defined in MIME through   an X.400 system.   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 parts2.1.  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].Alvestrand                  Standards Track                     [Page 1]

RFC 2158                 X.400 Image Body Parts             January 19982.2.  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       mime-gif-body OBJECT IDENTIFIER ::=               { mixer-bp-data 4 }   The content is as defined in [MIME].3.  Defined equivalences with MIME types3.1.  image/jpeg - jpeg-body-part   X.400 Body Part: Extended Body Part, OID jpeg-body-part   MIME Content-Type: image/jpeg   Conversion: None3.2.  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: NoneAlvestrand                  Standards Track                     [Page 2]

RFC 2158                 X.400 Image Body Parts             January 19983.4.  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 considered in this memo.5.  References   [MIME]       Freed, N., and N. Borenstein, "Multipurpose Internet Mail       Extensions (MIME) Part One: Format of Internet Message Bodies",RFC 2045, November 1996.   [MAWG]       Electronic Messaging Association Message Attachment Working Group       (MAWG): File Transfer Body Part Feasibility Project Guide -       version 1.5.1 - March 1996.6.  Author's Address   Harald Tveit Alvestrand   UNINETT   Postboks 6883 Elgeseter   N-7002 TRONDHEIM   Phone: +47 73 59 70 94   EMail: Harald.T.Alvestrand@uninett.noAlvestrand                  Standards Track                     [Page 3]

RFC 2158                 X.400 Image Body Parts             January 19987.  Full Copyright Statement   Copyright (C) The Internet Society (1998).  All Rights Reserved.   This document and translations of it may be copied and furnished to   others, and derivative works that comment on or otherwise explain it   or assist in its implementation may be prepared, copied, published   and distributed, in whole or in part, without restriction of any   kind, provided that the above copyright notice and this paragraph are   included on all such copies and derivative works.  However, this   document itself may not be modified in any way, such as by removing   the copyright notice or references to the Internet Society or other   Internet organizations, except as needed for the purpose of   developing Internet standards in which case the procedures for   copyrights defined in the Internet Standards process must be   followed, or as required to translate it into languages other than   English.   The limited permissions granted above are perpetual and will not be   revoked by the Internet Society or its successors or assigns.   This document and the information contained herein is provided on an   "AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING   TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING   BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION   HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.Alvestrand                  Standards Track                     [Page 4]