Security Area                                                   B. Leiba
Internet-Draft                                       Huawei Technologies
Intended status: Standards Track                         August 28, 2013
Expires: March 01, 2014


         Creation of a registry for smime-type parameter values
                   draft-leiba-smime-type-registry-00

Abstract

   Secure/Multipurpose Internet Mail Extensions (S/MIME) defined the
   Content-Type parameter "smime-type".  As the list of defined values
   for that parameter has increased, it has become clear that a registry
   is needed to document those values.  This document creates that
   registry, registers the current values, and specifies the policies
   for registration of new values.

Status of This Memo

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   This Internet-Draft will expire on March 01, 2014.

Copyright Notice

   Copyright (c) 2013 IETF Trust and the persons identified as the
   document authors.  All rights reserved.












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   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   2
   3.  Security Considerations . . . . . . . . . . . . . . . . . . .   3
   4.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   3
     4.1.  Normative References  . . . . . . . . . . . . . . . . . .   3
     4.2.  Informative References  . . . . . . . . . . . . . . . . .   3
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .   4

1.  Introduction

   Secure/Multipurpose Internet Mail Extensions (S/MIME) defined the
   Content-Type "application/pkcs7-mime" and the parameter "smime-type",
   along with four valid values for the parameter [RFC3851].
   Certificate Management over CMS (CMC) added two new parameter values
   [RFC5273].  [RFC5751] replaced RFC 3851 and registered the
   application/pkcs7-mime media type, but did not create a registry for
   the smime-type values.

   When Enrollment over Secure Transport [I-D.ietf-pkix-est] added
   another parameter value, it became clear that a registry for smime-
   type parameter values is necessary.  Section 2 creates that registry,
   registers the current values that are defined in the three previous
   documents, and specifies the policies for registration of new values.

2.  IANA Considerations

   This document requests two IANA actions.

   IANA is asked to change the reference field for the media type
   "application/pkcs7-mime" to "[RFC5751], [RFC-leiba-smime-type-
   registry]", replacing the latter with the RFC number for this RFC.
   This replaces the references to RFC5273 and RFC-ietf-pkix-est with
   this document, as those references are no longer needed.

   IANA is asked to create a new sub-registry under the Multipurpose
   Internet Mail Extensions (MIME) and Media Types top-level registry.



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   The new registry is "Parameter values for the smime-type parameter",
   the reference for the registry is "[RFC-leiba-smime-type-registry],
   [RFC5751]", and the initial values for the registry are as follows:

   +----------------------+-----------------------------------+
   |  smime-type value    |  Reference                        |
   +----------------------+-----------------------------------+
   | certs-only           | [RFC5751] Section 3.2.2           |
   | CMC-Request          | [RFC5273] Section 3               |
   | CMC-Response         | [RFC5273] Section 3               |
   | compressed-data      | [RFC5751] Section 3.2.2           |
   | enveloped-data       | [RFC5751] Section 3.2.2           |
   | server-generated-key | [RFC-ietf-pkix-est] Section 4.4.2 |
   | signed-data          | [RFC5751] Section 3.2.2           |
   +----------------------+-----------------------------------+


   [[RFC Editor: please replace RFC-ietf-pkix-est in the table above
   with the RFC number assigned to draft-ietf-pkix-est.  Note that it is
   NOT the RFC number for this RFC!]]

   New values can be registered using the RFC Required policy, as
   defined in [RFC5226].  The S/MIME Message Specification [RFC5751],
   Section 3.2.2, specifies guidelines for assigning new smime-type
   parameter values, and those guidelines apply to the assignment of
   values in this registry.

3.  Security Considerations

   This document is purely administrative, and presents no security
   issues.

4.  References

4.1.  Normative References

   [RFC5226]  Narten, T. and H. Alvestrand, "Guidelines for Writing an
              IANA Considerations Section in RFCs", BCP 26, RFC 5226,
              May 2008.

4.2.  Informative References

   [I-D.ietf-pkix-est]
              Pritikin, M., Yee, P., and D. Harkins, "Enrollment over
              Secure Transport", draft-ietf-pkix-est-09 (work in
              progress), August 2013.





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   [RFC3851]  Ramsdell, B., "Secure/Multipurpose Internet Mail
              Extensions (S/MIME) Version 3.1 Message Specification",
              RFC 3851, July 2004.

   [RFC5273]  Schaad, J. and M. Myers, "Certificate Management over CMS
              (CMC): Transport Protocols", RFC 5273, June 2008.

   [RFC5751]  Ramsdell, B. and S. Turner, "Secure/Multipurpose Internet
              Mail Extensions (S/MIME) Version 3.2 Message
              Specification", RFC 5751, January 2010.

Author's Address

   Barry Leiba
   Huawei Technologies

   Phone: +1 646 827 0648
   Email: barryleiba@computer.org
   URI:   http://internetmessagingtechnology.org/
































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