Security AreaInternet Engineering Task Force (IETF) B. LeibaInternet-DraftRequest for Comments: 7114 Huawei TechnologiesIntended status:Category: Standards TrackNovember 12, 2013 Expires: May 14,January 2014 ISSN: 2070-1721 Creation of aregistryRegistry for smime-typeparameter values draft-leiba-smime-type-registry-02Parameter 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 documentthosethese values. This document createsthatthe registry, registers the current values, and specifies the policies for registration of new values. Status ofthisThis Memo ThisInternet-Draftissubmitted in full conformance with the provisions of BCP 78 and BCP 79. Internet-Drafts are working documentsan Internet Standards Track document. This document is a product of the Internet Engineering Task Force (IETF).Note that other groups may also distribute working documents as Internet-Drafts. The listIt represents the consensus ofcurrent Internet- Drafts is at http://datatracker.ietf.org/drafts/current/. Internet-Drafts are draft documents validthe IETF community. It has received public review and has been approved fora maximumpublication 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 ofsix monthsthis document, any errata, and how to provide feedback on it may beupdated, replaced, or obsoleted by other documentsobtained atany time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress." This Internet-Draft will expire on May 14, 2014.http://www.rfc-editor.org/info/rfc7114. Copyright Notice Copyright (c)20132014 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)(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. 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 . . . . . . . . . . . . . . . . . . . . . . . . .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 createsthatthis registry, registers the current values that are defined inthe three previouspreviously published documents, and specifies the policies for registration of new values. 2. IANA ConsiderationsThis document requests two IANA actions.IANAis asked to changehas changed the reference field for the media type"application/pkcs7-mime""application/ pkcs7-mime" to"[RFC5751], [RFC-leiba-smime-type- registry]", replacing the latter with the RFC number forrefer to [RFC5751] and thisRFC.document. This document replaces the references toRFC5273RFC 5273 andRFC7030 with this document, as those referencesRFC 7030, which are no longer needed. IANAis asked to createhas created a new sub-registry under theMultipurpose Internet Mail Extensions (MIME) and"MIME MediaTypesType Sub- Parameter Registries" top-level registry. The new registry is "ParametervaluesValues for the smime-typeparameter", the reference for the registry is "[RFC-leiba-smime-type-registry], [RFC5751]",Parameter", andtheit references this document and [RFC5751]. The initial values for the registry are as follows: +----------------------+-----------------------------------+ | smime-type value | Reference | +----------------------+-----------------------------------+ | certs-only |[RFC5751][RFC5751], Section 3.2.2 | | CMC-Request |[RFC5273][RFC5273], Section 3 | | CMC-Response |[RFC5273][RFC5273], Section 3 | | compressed-data |[RFC5751][RFC5751], Section 3.2.2 | | enveloped-data |[RFC5751][RFC5751], Section 3.2.2 | | enveloped-x400 |[RFC3854][RFC3854], Section 3.3.1 | | server-generated-key |[RFC7030][RFC7030], Section 4.4.2 | | signed-data |[RFC5751][RFC5751], Section 3.2.2 | | signed-receipt |[RFC2634][RFC2634], Section 2.4, bullet 10 | | signed-x400 |[RFC3854][RFC3854], Section 3.2.1 | +----------------------+-----------------------------------+ New values can be registered using theRFCSpecification 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 purelyadministrative,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.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.P., and D. Harkins, "Enrollment over Secure Transport", RFC 7030, October 2013. Author's Address Barry Leiba Huawei Technologies Phone: +1 646 827 0648Email:EMail: barryleiba@computer.org URI: http://internetmessagingtechnology.org/