Memorandum for Multi-Domain Public Key Infrastructure Interoperability
RFC 5217
| Document | Type |
RFC - Informational
(July 2008; No errata)
Was draft-shimaoka-multidomain-pki (individual in sec area)
|
|
|---|---|---|---|
| Last updated | 2015-10-14 | ||
| Stream | IETF | ||
| Formats | plain text html pdf htmlized bibtex | ||
| Reviews | |||
| Stream | WG state | (None) | |
| Document shepherd | No shepherd assigned | ||
| IESG | IESG state | RFC 5217 (Informational) | |
| Consensus Boilerplate | Unknown | ||
| Telechat date | |||
| Responsible AD | Russ Housley | ||
| Send notices to | (None) | ||
Network Working Group M. Shimaoka, Ed.
Request for Comments: 5217 SECOM
Category: Informational N. Hastings
NIST
R. Nielsen
Booz Allen Hamilton
July 2008
Memorandum for Multi-Domain Public Key Infrastructure Interoperability
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.
Abstract
The objective of this document is to establish a terminology
framework and to suggest the operational requirements of Public Key
Infrastructure (PKI) domain for interoperability of multi-domain
Public Key Infrastructure, where each PKI domain is operated under a
distinct policy. This document describes the relationships between
Certification Authorities (CAs), provides the definition and
requirements for PKI domains, and discusses typical models of multi-
domain PKI.
Shimaoka, et al. Informational [Page 1]
RFC 5217 Multi-Domain PKI Interoperability July 2008
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1. Objective . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2. Document Outline . . . . . . . . . . . . . . . . . . . . . 3
2. Public Key Infrastructure (PKI) Basics . . . . . . . . . . . . 3
2.1. Basic Terms . . . . . . . . . . . . . . . . . . . . . . . 3
2.2. Relationships between Certification Authorities . . . . . 4
2.2.1. Hierarchical CA Relationships . . . . . . . . . . . . 5
2.2.2. Peer-to-Peer CA Relationships . . . . . . . . . . . . 6
2.3. Public Key Infrastructure (PKI) Architectures . . . . . . 7
2.3.1. Single CA Architecture . . . . . . . . . . . . . . . . 7
2.3.2. Multiple CA Architectures . . . . . . . . . . . . . . 8
2.4. Relationships between PKIs and Relying Parties . . . . . . 12
3. PKI Domain . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.1. PKI Domain Properties . . . . . . . . . . . . . . . . . . 13
3.2. Requirements for Establishing and Participating in PKI
Domains . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.2.1. PKI Requirements . . . . . . . . . . . . . . . . . . . 13
3.2.2. PKI Domain Documentation . . . . . . . . . . . . . . . 14
3.2.3. PKI Domain Membership Notification . . . . . . . . . . 15
3.2.4. Considerations for PKIs and PKI Domains with
Multiple Policies . . . . . . . . . . . . . . . . . . 16
3.3. PKI Domain Models . . . . . . . . . . . . . . . . . . . . 16
3.3.1. Unifying Trust Point (Unifying Domain) Model . . . . . 16
3.3.2. Independent Trust Point Models . . . . . . . . . . . . 17
3.4. Operational Considerations . . . . . . . . . . . . . . . . 21
4. Trust Models External to PKI Relationships . . . . . . . . . . 22
4.1. Trust List Models . . . . . . . . . . . . . . . . . . . . 22
4.1.1. Local Trust List Model . . . . . . . . . . . . . . . . 22
4.1.2. Trust Authority Model . . . . . . . . . . . . . . . . 23
4.2. Trust List Considerations . . . . . . . . . . . . . . . . 24
4.2.1. Considerations for a PKI . . . . . . . . . . . . . . . 24
4.2.2. Considerations for Relying Parties and Trust
Authorities . . . . . . . . . . . . . . . . . . . . . 24
4.2.3. Additional Considerations for Trust Authorities . . . 25
5. Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . 25
6. Security Considerations . . . . . . . . . . . . . . . . . . . 25
6.1. PKI Domain Models . . . . . . . . . . . . . . . . . . . . 25
6.2. Trust List Models . . . . . . . . . . . . . . . . . . . . 26
7. References . . . . . . . . . . . . . . . . . . . . . . . . . . 27
7.1. Normative References . . . . . . . . . . . . . . . . . . . 27
7.2. Informative References . . . . . . . . . . . . . . . . . . 27
Shimaoka, et al. Informational [Page 2]
RFC 5217 Multi-Domain PKI Interoperability July 2008
1. Introduction
1.1. Objective
The objective of this document is to establish a terminology
framework and to provide the operational requirements, which can be
used by different Public Key Infrastructure (PKI) authorities who are
considering establishing trust relationships with each other. The
document defines different types of possible trust relationships,
identifies design and implementation considerations that PKIs should
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