MIKEY-TICKET: Ticket-Based Modes of Key Distribution in Multimedia Internet KEYing (MIKEY)
RFC 6043
| Document | Type |
RFC - Informational
(March 2011; No errata)
Updated by RFC 6309
Was draft-mattsson-mikey-ticket (individual in sec area)
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|
|---|---|---|---|
| Last updated | 2015-10-14 | ||
| Stream | IETF | ||
| Formats | plain text pdf html bibtex | ||
| Stream | WG state | (None) | |
| Document shepherd | No shepherd assigned | ||
| IESG | IESG state | RFC 6043 (Informational) | |
| Consensus Boilerplate | Unknown | ||
| Telechat date | |||
| Responsible AD | Tim Polk | ||
| Send notices to | (None) | ||
Internet Engineering Task Force (IETF) J. Mattsson
Request for Comments: 6043 Ericsson
Category: Informational T. Tian
ISSN: 2070-1721 ZTE
March 2011
MIKEY-TICKET: Ticket-Based Modes of Key Distribution
in Multimedia Internet KEYing (MIKEY)
Abstract
The Multimedia Internet KEYing (MIKEY) specification describes a key
management scheme for real-time applications. In this document, we
note that the currently defined MIKEY modes are insufficient to
address deployment scenarios built around a centralized key
management service. Interest in such deployments is increasing.
Therefore, a set of new MIKEY modes that work well in such scenarios
are defined. The new modes use a trusted key management service and
a ticket concept, similar to that in Kerberos. The new modes also
support features used by many existing applications, where the exact
identity of the other endpoint may not be known at the start of the
communication session.
Status of This Memo
This document is not an Internet Standards Track specification; it is
published for informational purposes.
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). Not all documents
approved by the IESG are a candidate for any level of Internet
Standard; see 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/rfc6043.
Mattsson & Tian Informational [Page 1]
RFC 6043 MIKEY-TICKET March 2011
Copyright Notice
Copyright (c) 2011 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
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described in the Simplified BSD License.
Table of Contents
1. Introduction ....................................................4
2. Terminology .....................................................4
2.1. Definitions and Notation ...................................5
2.2. Abbreviations ..............................................6
2.3. Payloads ...................................................6
3. Design Considerations ...........................................7
4. MIKEY-TICKET ....................................................9
4.1. Overview ...................................................9
4.1.1. Modes ..............................................12
4.2. Exchanges .................................................13
4.2.1. Ticket Request .....................................13
4.2.2. Ticket Transfer ....................................16
4.2.3. Ticket Resolve .....................................19
5. Key Management Functions .......................................23
5.1. Key Derivation ............................................23
5.1.1. Deriving Forked Keys ...............................25
5.1.2. Deriving Keys from an Envelope Key/PSK/MPK .........26
5.1.3. Deriving Keys from a TGK/GTGK ......................27
5.2. CSB Updating ..............................................28
5.3. Ticket Reuse ..............................................29
5.4. Error Handling ............................................29
5.5. MAC/Signature Coverage ....................................30
6. Payload Encoding ...............................................31
6.1. Common Header Payload (HDR) ...............................31
6.1.1. The GENERIC-ID Map Type ............................33
6.2. Key Data Transport Payload (KEMAC) ........................34
6.2.1. Key Data Sub-Payload ...............................35
6.3. Timestamp Payload (T) .....................................36
6.4. Timestamp Payload with Role Indicator (TR) ................36
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