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+Internet Engineering Task Force (IETF) B. Leiba
+Request for Comments: 7114 Huawei Technologies
+Category: Standards Track January 2014
+ISSN: 2070-1721
+
+
+ Creation of a Registry for smime-type Parameter Values
+
+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 these values. This document creates the
+ registry, registers the current values, and specifies the policies
+ for registration of new values.
+
+Status of This Memo
+
+ This is an Internet Standards Track document.
+
+ This document is a product of the Internet Engineering Task Force
+ (IETF). It represents the consensus of the IETF community. It has
+ received public review and has been approved for publication by the
+ Internet Engineering Steering Group (IESG). Further information on
+ Internet Standards is available in Section 2 of RFC 5741.
+
+ Information about the current status of this document, any errata,
+ and how to provide feedback on it may be obtained at
+ http://www.rfc-editor.org/info/rfc7114.
+
+Copyright Notice
+
+ Copyright (c) 2014 IETF Trust and the persons identified as the
+ document authors. All rights reserved.
+
+ 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
+ to this document. Code Components extracted from this document must
+ include Simplified BSD License text as described in Section 4.e of
+ the Trust Legal Provisions and are provided without warranty as
+ described in the Simplified BSD License.
+
+
+
+
+
+
+Leiba Standards Track [Page 1]
+
+RFC 7114 Registry for smime-type values January 2014
+
+
+Table of Contents
+
+ 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2
+ 2. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 3
+ 3. Security Considerations . . . . . . . . . . . . . . . . . . . 3
+ 4. References . . . . . . . . . . . . . . . . . . . . . . . . . 4
+ 4.1. Normative References . . . . . . . . . . . . . . . . . . 4
+ 4.2. Informative References . . . . . . . . . . . . . . . . . 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.
+
+ Enhanced Security Services for S/MIME [RFC2634] and Securing X.400
+ Content with S/MIME [RFC3854] also add smime-type values.
+
+ When Enrollment over Secure Transport [RFC7030] added another
+ parameter value, it became clear that a registry for smime-type
+ parameter values is necessary. Section 2 creates this registry,
+ registers the current values that are defined in previously published
+ documents, and specifies the policies for registration of new values.
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+Leiba Standards Track [Page 2]
+
+RFC 7114 Registry for smime-type values January 2014
+
+
+2. IANA Considerations
+
+ IANA has changed the reference field for the media type application/
+ pkcs7-mime to refer to [RFC5751] and this document. This document
+ replaces the references to RFC 5273 and RFC 7030, which are no longer
+ needed.
+
+ IANA has created a new sub-registry under the "MIME Media Type Sub-
+ Parameter Registries" top-level registry. The new registry is
+ "Parameter Values for the smime-type Parameter", and it references
+ this document and [RFC5751]. 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 |
+ | enveloped-x400 | [RFC3854], Section 3.3.1 |
+ | server-generated-key | [RFC7030], Section 4.4.2 |
+ | signed-data | [RFC5751], Section 3.2.2 |
+ | signed-receipt | [RFC2634], Section 2.4, bullet 10 |
+ | signed-x400 | [RFC3854], Section 3.2.1 |
+ +----------------------+-----------------------------------+
+
+ New values can be registered using the Specification 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.
+
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+Leiba Standards Track [Page 3]
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+RFC 7114 Registry for smime-type values January 2014
+
+
+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.
+
+ [RFC5751] Ramsdell, B. and S. Turner, "Secure/Multipurpose Internet
+ Mail Extensions (S/MIME) Version 3.2 Message
+ Specification", RFC 5751, January 2010.
+
+4.2. Informative References
+
+ [RFC2634] Hoffman, P., "Enhanced Security Services for S/MIME", RFC
+ 2634, June 1999.
+
+ [RFC3851] Ramsdell, B., "Secure/Multipurpose Internet Mail
+ Extensions (S/MIME) Version 3.1 Message Specification",
+ RFC 3851, July 2004.
+
+ [RFC3854] Hoffman, P., Bonatti, C., and A. Eggen, "Securing X.400
+ Content with Secure/Multipurpose Internet Mail Extensions
+ (S/MIME)", RFC 3854, July 2004.
+
+ [RFC5273] Schaad, J. and M. Myers, "Certificate Management over CMS
+ (CMC): Transport Protocols", RFC 5273, June 2008.
+
+ [RFC7030] Pritikin, M., Yee, P., and D. Harkins, "Enrollment over
+ Secure Transport", RFC 7030, October 2013.
+
+Author's Address
+
+ Barry Leiba
+ Huawei Technologies
+
+ Phone: +1 646 827 0648
+ EMail: barryleiba@computer.org
+ URI: http://internetmessagingtechnology.org/
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+Leiba Standards Track [Page 4]
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