One document matched: draft-ietf-sidr-rpki-algs-02.txt

Differences from draft-ietf-sidr-rpki-algs-01.txt

SIDR                                                           G. Huston
Internet-Draft                                                     APNIC
Intended status: Standards Track                         October 8, 2010
Expires: April 11, 2011


 A Profile for Algorithms and Key Sizes for use in the Resource Public
                           Key Infrastructure
                    draft-ietf-sidr-rpki-algs-02.txt

Abstract

   This document defines a profile for the algorithm and key size to be
   used for signatures applied to certificates, Certificate Revocation
   Lists, and signed objects in the context of the Resource Public Key
   Infrastructure.

Status of this Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

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   This Internet-Draft will expire on April 11, 2011.

Copyright Notice

   Copyright (c) 2010 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

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   described in the Simplified BSD License.



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1.  Introduction

   This document defines a profile for the algorithm and key size to be
   used for signatures applied to certificates, Certificate Revocation
   Lists (CRLs), and signed objects in the context of the Resource
   Public Key Infrastructure (RPKI) [I-D.ietf-sidr-arch].

   This section of the profile is specified in a distinct profile
   document, referenced by the RPKI Certificate Policy (CP)
   [I-D.ietf-sidr-cp] and the RPKI Certificate Profile
   [I-D.ietf-sidr-res-certs], in order to allow for a degree of
   algorithm and key agility in the RPKI, while permitting some longer
   term stability in the CP and Certificate Profile specifications.

1.1.  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.


2.  Algorithm and Key Size

   This profile specifies the use of RSASSA-PKCS1-v1_5 [RFC3447] with
   the SHA-256 hash algorithm to compute the signature of certificates,
   CRLs, and signed objects in the context of the RPKI.  Accordingly,
   the OID value in the RPKI for such signatures MUST be
   1.2.840.113549.1.1.11 (sha256WithRSAEncryption).  The RSA key pairs
   used to compute the signatures MUST have a 2048-bit modulus and a
   public exponent (e) of 65,537.

   In order to facilitate a potential need to transition to stronger
   cryptographic algorithms in the future, Certification Authorities
   (CAs) and Relying Parties (RPs) SHOULD be able to generate and verify
   RSASSA-PKCS1-v1_5 signatures using the SHA-512 hash algorithm and RSA
   key sizes of 3072 and 4096 bits.


3.  Future Upates

   It is anticipated that the RPKI will require the adoption of updated
   key sizes and a different set of signature and hash algorithms over
   time, in order to maintain an acceptable level of cryptographic
   security to protect the integrity of signed products in the RPKI.
   This profile should be updated to specify such future requirements,
   as and when appropriate.

   CAs and RPs SHOULD be capable of supporting a transition to allow for



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   the phased introduction of additional encryption algorithms and key
   specifications, and also accomodate the orderly deprecation of
   previously specified algorithms and keys.  Accordingly, CAs and RPs
   SHOULD be capable of supporting multiple RPKI algorithm and key
   profiles simultaneously within the scope of such anticipated
   transitions.  The recommended procedures to implement such a
   transition of key sizes and algorithms is not specified in this
   document.


4.  Security Considerations

   The Security Considerations of [RFC3779], [RFC5280], and [RFC4055]
   apply to signatures as defined by this profile, and their use.


5.  IANA Considerations

   [There are no IANA considerations in this document.]


6.  Acknowledgments

   The author acknowledges the re-use in this draft of material
   originally contained in working drafts the RPKI Certificate Policy
   and Resource Certificate profile documents.  The co-authors of these
   two documents, namely Stephen Kent, Derrick Kong, Karen Seo, Ronald
   Watro, George Michaelson and Robert Loomans, are acknowledged, with
   thanks.  The constraint on key size noted in this profile is the
   outcome of comments from Stephen Kent and review comments from David
   Cooper.


7.  Normative References

   [I-D.ietf-sidr-arch]
              Lepinski, M. and S. Kent, "An Infrastructure to Support
              Secure Internet Routing", draft-ietf-sidr-arch (work in
              progress), July 2009.

   [I-D.ietf-sidr-cp]
              Seo, K., Watro, R., Kong, D., and S. Kent, "Certificate
              Policy (CP) for the Resource PKI (RPKI)",
              draft-ietf-sidr-cp (work in progress), July 2009.

   [I-D.ietf-sidr-res-certs]
              Husotn, G., Michaelson, G., and R. Loomans, "A Profile for
              X.509 PKIX Resource Certificates",



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              draft-ietf-sidr-res-certs (work in progress),
              February 2008.

   [RFC3447]  Jonsson, J. and B. Kaliski, "Public-Key Cryptography
              Standards (PKCS) #1: RSA Cryptography Specifications
              Version 2.1", RFC 3447, February 2003.

   [RFC3779]  Lynn, C., Kent, S., and K. Seo, "X.509 Extensions for IP
              Addresses and AS Identifiers", RFC 3779, June 2004.

   [RFC4055]  Schaad, J., Kaliski, B., and R. Housley, "Additional
              Algorithms and Identifiers for RSA Cryptography for use in
              the Internet X.509 Public Key Infrastructure Certificate
              and Certificate Revocation List (CRL) Profile", RFC 4055,
              June 2005.

   [RFC5280]  Cooper, D., Santesson, S., Farrell, S., Boeyen, S.,
              Housley, R., and W. Polk, "Internet X.509 Public Key
              Infrastructure Certificate and Certificate Revocation List
              (CRL) Profile", RFC 5280, May 2008.


Author's Address

   Geoff Huston
   APNIC

   Email: gih@apnic.net























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