Registration of media type application/xenc+xml

[Jose Kahan]

This is a media type registration as defined in Multipurpose Internet
Mail Extensions (MIME) Part Four: Registration Procedures [MIME-REG]
and Media Type Specifications and Registration Procedures
[MEDIA-TYPE-REG].

XML Encryption Syntax and Processing [XML-Encryption] specifies a
process for encrypting data and representing the result in XML. The
data may be arbitrary data (including an XML document), an XML
element, or XML element content. The result of encrypting data is an
XML Encryption element which contains or references the cipher data.

The application/xenc+xml media type allows XML Encryption applications
to identify encrypted documents. Additionally it allows applications
cognizant of this media-type (even if they are not XML Encryption
implementations) to note that the media type of the decrypted
(original) object might be a type other than XML.

---------------

Type name:

    application
     
Subtype name:

    xenc+xml

Required parameters: 

    none.
     
Optional parameters: 

    charset, as defined in section 3.1 of RFC 3023 [XML-MT].

Encoding considerations:

    The encoding considerations are identical to those given 
    for 'application/xml' in section 3.2 of RFC 3023 [XML-MT].

Security considerations:
     
     See section 6 of the [XML-Encryption].

Interoperability considerations: 

     none.

Published specification: 

     [XML-Encryption].

Applications which use this media type:

     XML Encryption is device-, platform-, and vendor-neutral 
     and is supported by a range of Web applications.
     See also section 4 of [XML-Encryption].

Additional information:

     Magic number(s): none

     Although no byte sequences can be counted on to consistently
     identify XML Encryption documents, they will be XML documents in
     which the root element's QName's LocalPart is 'EncryptedData' or
     'EncryptedKey' with an associated namespace name of
     'http://www.w3.org/2001/04/xmlenc#'.  The application/xenc+xml
     type name MUST only be used for data objects in which the root
     element is from the XML Encryption namespace. XML documents which
     contain these element types in places other than the root element
     can be described using facilities such as [XML-schema].

     File extension(s): .xml

     Macintosh file type code(s): "TEXT"

Person & email address to contact for further information:

     jose+xe at w3.org
     xml-encryption at w3.org (public archived mailing 
     list for the XMLENC Recommendation)

Intended usage:

     COMMON

Restrictions on usage:

     none.

Author:
        
     The XML Encryption Recommendation is a work product of the World Wide
     Web Consortium (W3C) and was edited by:

       Donald Eastlake <dee3 at torque.pothole.com>
       Joseph Reagle <reagle at w3.org> 

Change controller:

     The World Wide Web Consortium (W3C) has change control over the 
     XML Encryption Recommendation and its related media types.

References:

[MEDIA-TYPE-REG]
  draft-freed-media-type-reg-05: Media Type Specifications and
  Registration Procedures.  N. Freed, J. Klensin. Internet-Draft, July
  26, 2005.
  http://www.ietf.org/internet-drafts/draft-freed-media-type-reg-05.txt

[MIME-REG]
  draft-freed-mime-p4-07: Multipurpose Internet Mail Extensions (MIME)
  Part Four: Registration Procedures. N. Freed,
  J. Klensin. Internet-Draft, August 5, 2005.
  http://www.ietf.org/internet-drafts/draft-freed-mime-p4-07.txt

[XML-Encryption]
  XML Encryption Syntax and Processing. D. Eastlake and J. Reagle
  (eds). W3C Recommendation, December 2002.
  http://www.w3.org/TR/2002/CR-xmlenc-core-20020802/

[XML-MT]
  RFC 3023: XML Media Types. M. Murata, S. St. Laurent, and D. Kohn.
  Informational, January 2001.  http://www.ietf.org/rfc/rfc2376.txt

[XML-schema]
  XML Schema Part 1: Structures D. Beech, M. Maloney, and N.
  Mendelsohn. W3C Recommendation, May 2001.
  http://www.w3.org/TR/2001/REC-xmlschema-1-20010502/ XML Schema Part
  2: Datatypes. P. Biron and A. Malhotra. W3C Recommendation, May
  2001.  http://www.w3.org/TR/2001/REC-xmlschema-2-20010502/



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