Internet DRAFT - draft-leiba-smime-type-registry
draft-leiba-smime-type-registry
Security Area B. Leiba
Internet-Draft Huawei Technologies
Intended status: Standards Track November 12, 2013
Expires: May 14, 2014
Creation of a registry for smime-type parameter values
draft-leiba-smime-type-registry-02
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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provisions of BCP 78 and BCP 79.
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This Internet-Draft will expire on May 14, 2014.
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 2
2. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 2
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3. Security Considerations . . . . . . . . . . . . . . . . . . . 3
4. References . . . . . . . . . . . . . . . . . . . . . . . . . . 3
4.1. Normative References . . . . . . . . . . . . . . . . . . . 3
4.2. Informative References . . . . . . . . . . . . . . . . . . 3
Author's Address . . . . . . . . . . . . . . . . . . . . . . . . . 3
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 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 RFC7030 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.
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 |
| 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 |
+----------------------+-----------------------------------+
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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.
[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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