Internet Engineering Task Force (IETF) R. Reddy
Request for Comments: 6024 National Security Agency
Category: Informational C. Wallace
ISSN: 2070-1721 Cygnacom Solutions
October 2010
Trust Anchor Management Requirements
Abstract
A trust anchor represents an authoritative entity via a public key
and associated data. The public key is used to verify digital
signatures, and the associated data is used to constrain the types of
information for which the trust anchor is authoritative. A relying
party uses trust anchors to determine if a digitally signed object is
valid by verifying a digital signature using the trust anchor's
public key, and by enforcing the constraints expressed in the
associated data for the trust anchor. This document describes some
of the problems associated with the lack of a standard trust anchor
management mechanism and defines requirements for data formats and
push-based protocols designed to address these problems.
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/rfc6024.
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Reddy & Wallace Informational [Page 1]RFC 6024 Trust Anchor Management October 2010
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1. Terminology . . . . . . . . . . . . . . . . . . . . . . . 4
1.2. Requirements Notation . . . . . . . . . . . . . . . . . . 4
2. Problem Statement . . . . . . . . . . . . . . . . . . . . . . 5
3. Requirements . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.1. Transport Independence . . . . . . . . . . . . . . . . . . 6
3.2. Basic Management Operations . . . . . . . . . . . . . . . 7
3.3. Management Targets . . . . . . . . . . . . . . . . . . . . 7
3.4. Delegation of TA Manager Authority . . . . . . . . . . . . 8
3.5. RFC 5280 Support . . . . . . . . . . . . . . . . . . . . . 9
3.6. Support Purposes other than Certification Path
Validation . . . . . . . . . . . . . . . . . . . . . . . . 9
3.7. Trust Anchor Format . . . . . . . . . . . . . . . . . . . 10
3.8. Source Authentication . . . . . . . . . . . . . . . . . . 10
3.9. Reduce Reliance on Out-of-Band Trust Mechanisms . . . . . 11
3.10. Replay Detection . . . . . . . . . . . . . . . . . . . . . 11
3.11. Compromise or Disaster Recovery . . . . . . . . . . . . . 12
4. Security Considerations . . . . . . . . . . . . . . . . . . . 12
5. References . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5.1. Normative References . . . . . . . . . . . . . . . . . . . 13
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