draft-ietf-sidr-policy-qualifiers-01.txt   draft-ietf-sidr-policy-qualifiers-02.txt 
Network Working Group A. Newton Network Working Group A. Newton
Internet-Draft ARIN Internet-Draft ARIN
Updates: 6487 (if approved) G. Huston Updates: 6487 (if approved) G. Huston
Intended status: Standards Track APNIC Intended status: Standards Track APNIC
Expires: April 05, 2014 October 02, 2013 Expires: January 4, 2015 July 3, 2014
Policy Qualifiers in RPKI Certificates Policy Qualifiers in RPKI Certificates
draft-ietf-sidr-policy-qualifiers-01 draft-ietf-sidr-policy-qualifiers-02
Abstract Abstract
This document updates RFC 6487 by clarifying the inclusion of policy This document updates RFC 6487 by clarifying the inclusion of policy
qualifiers in the certificate policies extension of RPKI resource qualifiers in the certificate policies extension of RPKI resource
certificates. certificates.
Status of This Memo Status of This Memo
This Internet-Draft is submitted in full conformance with the This Internet-Draft is submitted in full conformance with the
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Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
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This Internet-Draft will expire on April 05, 2014. This Internet-Draft will expire on January 4, 2015.
Copyright Notice Copyright Notice
Copyright (c) 2013 IETF Trust and the persons identified as the Copyright (c) 2014 IETF Trust and the persons identified as the
document authors. All rights reserved. document authors. All rights reserved.
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the Trust Legal Provisions and are provided without warranty as the Trust Legal Provisions and are provided without warranty as
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Table of Contents Table of Contents
1. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 2 1. Terminology . . . . . . . . . . . . . . . . . . . . . . . . . 2
2. Update to RFC 6487 . . . . . . . . . . . . . . . . . . . . . 2 2. Update to RFC 6487 . . . . . . . . . . . . . . . . . . . . . 2
3. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 3 3. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 3
4. Security Considerations . . . . . . . . . . . . . . . . . . . 3 4. Security Considerations . . . . . . . . . . . . . . . . . . . 3
5. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 3 5. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 3
6. Normative References . . . . . . . . . . . . . . . . . . . . 3 6. Normative References . . . . . . . . . . . . . . . . . . . . 4
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 4 Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 4
1. Terminology 1. Terminology
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in [RFC2119]. document are to be interpreted as described in [RFC2119].
2. Update to RFC 6487 2. Update to RFC 6487
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RPKI CP [RFC6484]". This references the CertPolicyId of the sequence RPKI CP [RFC6484]". This references the CertPolicyId of the sequence
allowed in PolicyInformation as defined by [RFC5280]. allowed in PolicyInformation as defined by [RFC5280].
[RFC5280] also specifies that PolicyInformation may optionally have a [RFC5280] also specifies that PolicyInformation may optionally have a
sequence of PolicyQualifierInfo objects. [RFC6487] does not sequence of PolicyQualifierInfo objects. [RFC6487] does not
specifically allow or disallow these PolicyQualifierInfo objects specifically allow or disallow these PolicyQualifierInfo objects
although it also states in section 4: "Unless specifically noted as although it also states in section 4: "Unless specifically noted as
being OPTIONAL, all the fields listed here MUST be present, and any being OPTIONAL, all the fields listed here MUST be present, and any
other fields MUST NOT appear in a conforming resource certificate." other fields MUST NOT appear in a conforming resource certificate."
This document updates [RFC6487], Section 4.8.9, as follows: Because there is a need for some RPKI Certificate Authorities to
include policy qualifiers in their certificates, this document
updates [RFC6487], Section 4.8.9, as follows:
OLD: OLD:
This extension MUST be present and MUST be marked critical. It This extension MUST be present and MUST be marked critical. It
MUST include exactly one policy, as specified in the RPKI CP MUST include exactly one policy, as specified in the RPKI
[RFC6484]. Certificate Policy (CP) [RFC6484].
NEW: NEW:
This extension MUST be present and MUST be marked critical. It This extension MUST be present and MUST be marked critical. It
MUST include exactly one policy, as specified in the RPKI CP MUST include exactly one policy, as specified in the RPKI CP
[RFC6484]. Exactly one policy qualifier MAY be included. If a [RFC6484]. Exactly one policy qualifier MAY be included. If a
policy qualifier is included, the policyQualifierId MUST be the policy qualifier is included, the policyQualifierId MUST be the
CPS pointer qualifier type (id-qt-cps). Certification Practice Statement (CPS) pointer qualifier type
(id-qt-cps).
As noted in [RFC5280], section 4.2.1.4: "Optional qualifiers, which As noted in [RFC5280], section 4.2.1.4: "Optional qualifiers, which
MAY be present, are not expected to change the definition of the MAY be present, are not expected to change the definition of the
policy." In this case any optional policy qualifiers that MAY be policy." In this case any optional policy qualifier that MAY be
present in a resource certificate MUST NOT change the definition of present in a resource certificate MUST NOT change the definition of
the RPKI CP [RFC6484]. the RPKI CP [RFC6484].
3. IANA Considerations 3. IANA Considerations
None. None.
4. Security Considerations 4. Security Considerations
The Security Considerations of [RFC6487] apply to this document. The Security Considerations of [RFC6487] apply to this document.
This document updates the RPKI certificate profile to specify that This document updates the RPKI certificate profile to specify that
the certificate policies extension can include a policy qualifier, the certificate policies extension can include a policy qualifier,
which is a URI. Checking of the URI might allow denial-of-service which is a URI. While de-referencing the URI is not required for
(DoS) attacks, where the target host may be subjected to bogus work certificate validation, doing so could provide a denial-of-service
resolving the URI. However, this specification, like [RFC5280], (DoS) vector, where the target host may be subjected to bogus work
de-referencing the URI. However, this specification, like [RFC5280],
places no processing requirements on the URI included in the places no processing requirements on the URI included in the
qualifier. qualifier.
As an update to [RFC6487], this document broadens the class of As an update to [RFC6487], this document broadens the class of
certificates that conform to the RPKI profile by explicitly including certificates that conform to the RPKI profile by explicitly including
within the profile those certificates that contain a policy qualifier within the profile those certificates that contain a policy qualifier
as described here. A relying party that performs a strict validation as described here. A relying party that performs a strict validation
based on [RFC6487] and fails to support the updates described in this based on [RFC6487] and fails to support the updates described in this
document, would incorrectly invalidate RPKI objects that include the document, would incorrectly invalidate RPKI objects that include the
changes in Section 2. changes in Section 2.
5. Acknowledgements 5. Acknowledgments
Frank Hill and Adam Guyot helped define the scope of this issue and Frank Hill and Adam Guyot helped define the scope of this issue and
identified and worked with RPKI validator implementers to clarify the identified and worked with RPKI validator implementers to clarify the
use of policy qualifiers in resource certificates. use of policy qualifiers in resource certificates.
Sean Turner provided significant text to this document regarding the Sean Turner provided significant text to this document regarding the
processing of the CPS URI and limiting the scope of the allowable processing of the CPS URI and limiting the scope of the allowable
content of the policy qualifier. content of the policy qualifier.
6. Normative References 6. Normative References
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[RFC6487] Huston, G., Michaelson, G., and R. Loomans, "A Profile for [RFC6487] Huston, G., Michaelson, G., and R. Loomans, "A Profile for
X.509 PKIX Resource Certificates", RFC 6487, February X.509 PKIX Resource Certificates", RFC 6487, February
2012. 2012.
Authors' Addresses Authors' Addresses
Andrew Lee Newton Andrew Lee Newton
American Registry for Internet Numbers American Registry for Internet Numbers
3635 Concorde Parkway 3635 Concorde Parkway
Chantilly, VA 20151 Chantilly, VA 20151
US USA
Email: andy@arin.net Email: andy@arin.net
URI: http://www.arin.net URI: http://www.arin.net
Geoff Huston Geoff Huston
Asia Pacific Network Information Center Asia Pacific Network Information Center
6 Cordelia Street 6 Cordelia Street
South Brisbane QLD 4101 South Brisbane QLD 4101
Australia Australia
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