BGP Algorithms, Key Formats, & Signature Formats

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Last updated 2011-12-05 (latest revision 2011-10-24)
Replaces draft-turner-sidr-bgpsec-algs
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Secure Inter-Domain Routing Working Group                      S. Turner
Internet-Draft                                                      IECA
Updates: [ID.sidr-rpki-algs]                            December 5, 2011
Intended Status: Standards Track
Expires: June 7, 2012

            BGP Algorithms, Key Formats, & Signature Formats

   This document specifies the algorithms, algorithms' parameters,
   asymmetric key formats, asymmetric key size and signature format used
   in BGPSEC (Border Gateway Protocol Security).  This document updates
   the Profile for Algorithms and Key Sizes for use in the Resource
   Public Key Infrastructure (draft-ietf-sidr-rpki-algs).

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   This Internet-Draft will expire on June 7, 2012.

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Turner                    Expires June 7, 2012                  [Page 1]
Internet-Draft    BGPSEC Algs, Key & Signature Formats  December 5, 2011

1.  Introduction

   This document specifies:
      o the digital signature algorithm and parameters;
      o the hash algorithm and parameters;
      o the public and private key formats; and,
      o the signature format
   used by Resource Public Key Infrastructure (RPKI) Certification
   Authorities (CA), and BGPSEC (Border Gateway Protocol Security)
   speakers (i.e., routers).  CAs use these algorithms when issuing
   BGPSEC Router Certificates [ID.bgpsec-pki-profiles] and CRLs
   [ID.sidr-res-cert-profile].  BGPSEC routers use these when requesting
   BGPSEC certificates [ID.bgpsec-pki-profiles], generating BGPSEC
   Update messages [ID.sidr-bgpsec-protocol], and verifying BGPSEC
   Update messages [ID.sidr-bgpsec-protocol].

   This document is referenced by the BGPSEC specification [ID.bgpsec-
   protocol] and the profile for BGPSEC Router Certificates and
   Certification Requests [ID.bgpsec-pki-profiles].  Familiarity with
   these documents is assumed.  Implementers are reminded, however,
   that, as noted in Section 2 of [ID.bgpsec-pki-profiles], the
   algorithms used to sign CA Certificates, BGPSEC Router Certificates,
   and CRLs are found in [ID.sidr-rpki-algs].

   This document updates [ID.sidr-rpki-algs] to add support for a) a
   different algorithm for BGPSEC certificate requests, which are only
   issued by BGPSEC speakers; b) a different Subject Public Key Info
   format for BGPSEC certificates, which is needed for the specified
   BGPSEC signature algorithm; and, c) a different signature format for
   BGPSEC signatures, which is needed for the specified BGPSEC signature
   algorithm.  The BGPSEC certificate are differentiated from other RPKI
   certificates by the use of the BGPSEC Extended Key Usage defined in

1.1.  Terminology

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "OPTIONAL" in this document are to be interpreted as described in

2.  Algorithms

   Four cryptographic algorithms are used to support BGPSEC:

     o The signature algorithm used when issuing BGPSEC certificates and
       CRLs, which would revoke BGPSEC certificates, MUST be as
       specified in [ID.sidr-rpki-algs]. 

Turner                    Expires June 7, 2012                  [Page 2]
Internet-Draft    BGPSEC Algs, Key & Signature Formats  December 5, 2011

     o The signature algorithm used in certification requests and BGPSEC
       Update messages MUST be Elliptic Curve Digital Signature
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