Multimedia Internet KEYing (MIKEY) General Extension Payload for Open Mobile Alliance BCAST LTKM/STKM Transport
RFC 4909
Document | Type |
RFC - Informational
(June 2007; Errata)
Was draft-dondeti-msec-mikey-genext-oma (individual in sec area)
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Authors | Lakshminath Dondeti , Frank Hartung , David Castleford | ||
Last updated | 2020-01-21 | ||
Stream | IETF | ||
Formats | plain text html pdf htmlized with errata bibtex | ||
Reviews | |||
Stream | WG state | (None) | |
Document shepherd | No shepherd assigned | ||
IESG | IESG state | RFC 4909 (Informational) | |
Consensus Boilerplate | Unknown | ||
Telechat date | |||
Responsible AD | Russ Housley | ||
Send notices to | (None) |
Network Working Group L. Dondeti, Ed. Request for Comments: 4909 QUALCOMM, Inc. Category: Informational D. Castleford France Telecom F. Hartung Ericsson Research June 2007 Multimedia Internet KEYing (MIKEY) General Extension Payload for Open Mobile Alliance BCAST LTKM/STKM Transport Status of This Memo This memo provides information for the Internet community. It does not specify an Internet standard of any kind. Distribution of this memo is unlimited. Copyright Notice Copyright (C) The IETF Trust (2007). Abstract This document specifies a new Multimedia Internet KEYing (MIKEY) General Extension payload (RFC 3830) to transport the short-term key message (STKM) and long-term key message (LTKM) payloads defined in the Open Mobile Alliance's (OMA) Browser and Content (BAC) Broadcast (BCAST) group's Service and Content protection specification. Table of Contents 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 2 2. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . . 2 3. MIKEY General Extension for OMA BCAST Usage . . . . . . . . . . 3 4. Interoperability Considerations . . . . . . . . . . . . . . . . 3 5. Security Considerations . . . . . . . . . . . . . . . . . . . . 4 6. IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 4 7. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . 4 8. References . . . . . . . . . . . . . . . . . . . . . . . . . . 5 8.1. Normative References . . . . . . . . . . . . . . . . . . . 5 8.2. Informative References . . . . . . . . . . . . . . . . . . 5 Dondeti, et al. Informational [Page 1] RFC 4909 OMA BCAST MIKEY General Extension June 2007 1. Introduction The Multimedia Internet Keying (MIKEY) protocol specification [1] defines a General Extension payload to allow possible extensions to MIKEY without having to allocate a new payload type. The General Extension payload can be used in any MIKEY message and is part of the authenticated/signed data part. There is an 8-bit type field in that payload. The type code assignment is IANA-managed, and RFC 3830 requires IETF consensus for assignments from the public range of 0-240. The Open Mobile Alliance's (OMA) Browser and Content (BAC) Broadcast (BCAST) group's Service and Content Protection specification [2] specifies the use of a short-term key message (STKM) and a long-term key message (LTKM) that carry attributes related to Service and Content protection. Note that any keys associated with the attributes are part of the MIKEY KEMAC payload. This document specifies the use of the General Extension payload of MIKEY to carry the LTKMs or STKMs. RFC 3830 [1], the MIKEY General Extension payload defined in [3], and the 3rd Generation Partnership Project (3GPP)'s Multimedia Broadcast/ Multicast Service (MBMS) document [4] specify the transport of MIKEY messages via unicast or broadcast and the OMA specifications use either for transport of MIKEY messages. 2. Terminology The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in RFC 2119 [5]. OMA BCAST STKM/LTKM MIKEY General Extension: We refer to the General Extension type -- 5 -- as the OMA BCAST STKM/LTKM MIKEY General Extension . Dondeti, et al. Informational [Page 2] RFC 4909 OMA BCAST MIKEY General Extension June 2007 3. MIKEY General Extension for OMA BCAST Usage 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ ! Next ! Type ! Length ! +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ ! OMA BCAST S/LTKM Subtype (variable length) ~ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Figure 1: OMA BCAST MIKEY General Extension Section 6.1 of RFC 3830 specifies the first three fields of the General Extension Payload and defines a variable length Data field. This document specifies the use of Type 5 for OMA BCAST Service and Content Protection using the Smartcard Profile. The contents of the variable length data field are defined below.Show full document text