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IETF RFC 9092



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Internet Engineering Task Force (IETF)                           R. Bush
Request for Comments: 9092                                  IIJ & Arrcus
Category: Standards Track                                   M. Candela
ISSN: 2070-1721                                                      NTT
                                                               W. Kumari
                                                                  Google
                                                              R. Housley
                                                          Vigil Security
                                                               July 2021


                     Finding and Using Geofeed Data

 Abstract

   This document specifies how to augment the Routing Policy
   Specification Language inetnum: class to refer specifically to
   geofeed data comma-separated values (CSV) files and describes an
   optional scheme that uses the Routing Public Key Infrastructure to
   authenticate the geofeed data CSV files.

 Status of This Memo

   This is an Internet Standards Track document.

   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).  Further information on
   Internet Standards is available in Section 2 of RFC 7841.

   Information about the current status of this document, any errata,
   and how to provide feedback on it may be obtained at
   https://www.rfc-editor.org/info/RFC 9092.

 Copyright Notice

   Copyright (c) 2021 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (https://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

 Table of Contents

   1.  Introduction
     1.1.  Requirements Language
   2.  Geofeed Files
   3.  inetnum: Class
   4.  Authenticating Geofeed Data
   5.  Operational Considerations
   6.  Privacy Considerations
   7.  Security Considerations
   8.  IANA Considerations
   9.  References
     9.1.  Normative References
     9.2.  Informative References
   Appendix A.  Example
   Acknowledgments
   Authors' Addresses

1.  Introduction

   Providers of Internet content and other services may wish to
   customize those services based on the geographic location of the user
   of the service.  This is often done using the source IP address used
   to contact the service.  Also, infrastructure and other services
   might wish to publish the locale of their services.  [RFC 8805]
   defines geofeed, a syntax to associate geographic locales with IP
   addresses, but it does not specify how to find the relevant geofeed
   data given an IP address.

   This document specifies how to augment the Routing Policy
   Specification Language (RPSL) [RFC 2725] inetnum: class to refer
   specifically to geofeed data CSV files and how to prudently use them.
   In all places inetnum: is used, inet6num: should also be assumed
   [RFC 4012].

   The reader may find [INETNUM] and [INET6NUM] informative, and
   certainly more verbose, descriptions of the inetnum: database
   classes.

   An optional utterly awesome but slightly complex means for
   authenticating geofeed data is also defined.

1.1.  Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
   "OPTIONAL" in this document are to be interpreted as described in
   BCP 14 [RFC 2119] [RFC 8174] when, and only when, they appear in all
   capitals, as shown here.

2.  Geofeed Files

   Geofeed files are described in [RFC 8805].  They provide a facility
   for an IP address resource "owner" to associate those IP addresses to
   geographic locales.

   Content providers and other parties who wish to locate an IP address
   to a geographic locale need to find the relevant geofeed data.  In
   Section 3, this document specifies how to find the relevant geofeed
   [RFC 8805] file given an IP address.

   Geofeed data for large providers with significant horizontal scale
   and high granularity can be quite large.  The size of a file can be
   even larger if an unsigned geofeed file combines data for many
   prefixes, if dual IPv4/IPv6 spaces are represented, etc.

   Geofeed data do have privacy considerations (see Section 6); this
   process makes bulk access to those data easier.

   This document also suggests an optional signature to strongly
   authenticate the data in the geofeed files.

3.  inetnum: Class

   The original RPSL specifications starting with [RIPE81], [RIPE181],
   and a trail of subsequent documents were written by the RIPE
   community.  The IETF standardized RPSL in [RFC 2622] and [RFC 4012].
   Since then, it has been modified and extensively enhanced in the
   Regional Internet Registry (RIR) community, mostly by RIPE [RIPE-DB].
   Currently, change control effectively lies in the operator community.

   The RPSL, and [RFC 2725] and [RFC 4012] used by the Regional Internet
   Registries (RIRs), specify the inetnum: database class.  Each of
   these objects describes an IP address range and its attributes.  The
   inetnum: objects form a hierarchy ordered on the address space.

   Ideally, RPSL would be augmented to define a new RPSL geofeed:
   attribute in the inetnum: class.  Until such time, this document
   defines the syntax of a Geofeed remarks: attribute, which contains an
   HTTPS URL of a geofeed file.  The format of the inetnum: geofeed
   remarks: attribute MUST be as in this example, "remarks: Geofeed ",
   where the token "Geofeed " MUST be case sensitive, followed by a URL
   that will vary, but it MUST refer only to a single geofeed [RFC 8805]
   file.

       inetnum: 192.0.2.0/24 # example
       remarks: Geofeed https://example.com/geofeed.csv

   While we leave global agreement of RPSL modification to the relevant
   parties, we specify that a proper geofeed: attribute in the inetnum:
   class MUST be "geofeed:" and MUST be followed by a single URL that
   will vary, but it MUST refer only to a single geofeed [RFC 8805] file.

       inetnum: 192.0.2.0/24 # example
       geofeed: https://example.com/geofeed.csv

   Registries MAY, for the interim, provide a mix of the remarks:
   attribute form and the geofeed: attribute form.

   The URL uses HTTPS, so the WebPKI provides authentication, integrity,
   and confidentiality for the fetched geofeed file.  However, the
   WebPKI can not provide authentication of IP address space assignment.
   In contrast, the RPKI (see [RFC 6481]) can be used to authenticate IP
   space assignment; see optional authentication in Section 4.

   Until all producers of inetnum: objects, i.e., the RIRs, state that
   they have migrated to supporting a geofeed: attribute, consumers
   looking at inetnum: objects to find geofeed URLs MUST be able to
   consume both the remarks: and geofeed: forms.  The migration not only
   implies that the RIRs support the geofeed: attribute, but that all
   registrants have migrated any inetnum: objects from remarks: to
   geofeed: attributes.

   Any particular inetnum: object MUST have, at most, one geofeed
   reference, whether a remarks: or a proper geofeed: attribute when it
   is implemented.  If there is more than one, all are ignored.

   If a geofeed CSV file describes multiple disjoint ranges of IP
   address space, there are likely to be geofeed references from
   multiple inetnum: objects.  Files with geofeed references from
   multiple inetnum: objects are not compatible with the signing
   procedure in Section 4.

   When geofeed references are provided by multiple inetnum: objects
   that have identical address ranges, then the geofeed reference on the
   inetnum: with the most recent last-modified: attribute SHOULD be
   preferred.

   As inetnum: objects form a hierarchy, geofeed references SHOULD be at
   the lowest applicable inetnum: object covering the relevant address
   ranges in the referenced geofeed file.  When fetching, the most
   specific inetnum: object with a geofeed reference MUST be used.

   It is significant that geofeed data may have finer granularity than
   the inetnum: that refers to them.  For example, an INETNUM object for
   an address range P could refer to a geofeed file in which P has been
   subdivided into one or more longer prefixes.

   Currently, the registry data published by ARIN are not the same RPSL
   as that of the other registries (see [RFC 7485] for a survey of the
   WHOIS Tower of Babel); therefore, when fetching from ARIN via FTP
   [RFC 959], WHOIS [RFC 3912], the Registration Data Access Protocol
   (RDAP) [RFC 9082], etc., the "NetRange" attribute/key MUST be treated
   as "inetnum", and the "Comment" attribute MUST be treated as
   "remarks".

4.  Authenticating Geofeed Data

   The question arises whether a particular geofeed [RFC 8805] data set
   is valid, i.e., is authorized by the "owner" of the IP address space
   and is authoritative in some sense.  The inetnum: that points to the
   geofeed [RFC 8805] file provides some assurance.  Unfortunately, the
   RPSL in many repositories is weakly authenticated at best.  An
   approach where RPSL was signed per [RFC 7909] would be good, except it
   would have to be deployed by all RPSL registries, and there is a fair
   number of them.

   A single optional authenticator MAY be appended to a geofeed
   [RFC 8805] file.  It is a digest of the main body of the file signed
   by the private key of the relevant RPKI certificate for a covering
   address range.  One needs a format that bundles the relevant RPKI
   certificate with the signature of the geofeed text.

   The canonicalization procedure converts the data from their internal
   character representation to the UTF-8 [RFC 3629] character encoding,
   and the <CRLF> sequence MUST be used to denote the end of a line of
   text.  A blank line is represented solely by the <CRLF> sequence.
   For robustness, any non-printable characters MUST NOT be changed by
   canonicalization.  Trailing blank lines MUST NOT appear at the end of
   the file.  That is, the file must not end with multiple consecutive
   <CRLF> sequences.  Any end-of-file marker used by an operating system
   is not considered to be part of the file content.  When present, such
   end-of-file markers MUST NOT be processed by the digital signature
   algorithm.

   Should the authenticator be syntactically incorrect per the above,
   the authenticator is invalid.

   Borrowing detached signatures from [RFC 5485], after file
   canonicalization, the Cryptographic Message Syntax (CMS) [RFC 5652]
   would be used to create a detached DER-encoded signature that is then
   padded BASE64 encoded (as per Section 4 of [RFC 4648]) and line
   wrapped to 72 or fewer characters.  The same digest algorithm MUST be
   used for calculating the message digest on content being signed,
   which is the geofeed file, and for calculating the message digest on
   the SignerInfo SignedAttributes [RFC 8933].  The message digest
   algorithm identifier MUST appear in both the SignedData
   DigestAlgorithmIdentifiers and the SignerInfo
   DigestAlgorithmIdentifier [RFC 5652].

   The address range of the signing certificate MUST cover all prefixes
   in the geofeed file it signs.

   An address range A "covers" address range B if the range of B is
   identical to or a subset of A.  "Address range" is used here because
   inetnum: objects and RPKI certificates need not align on Classless
   Inter-Domain Routing (CIDR) [RFC 4632] prefix boundaries, while those
   of the CSV lines in a geofeed file do.

   As the signer specifies the covered RPKI resources relevant to the
   signature, the RPKI certificate covering the inetnum: object's
   address range is included in the [RFC 5652] CMS SignedData
   certificates field.

   Identifying the private key associated with the certificate and
   getting the department that controls the private key (which might be
   trapped in a Hardware Security Module (HSM)) to sign the CMS blob is
   left as an exercise for the implementor.  On the other hand,
   verifying the signature requires no complexity; the certificate,
   which can be validated in the public RPKI, has the needed public key.
   The trust anchors for the RIRs are expected to already be available
   to the party performing signature validation.  Validation of the CMS
   signature on the geofeed file involves:

   1.  Obtaining the signer's certificate from the CMS SignedData
       CertificateSet [RFC 5652].  The certificate SubjectKeyIdentifier
       extension [RFC 5280] MUST match the SubjectKeyIdentifier in the
       CMS SignerInfo SignerIdentifier [RFC 5652].  If the key
       identifiers do not match, then validation MUST fail.

       Validation of the signer's certificate MUST ensure that it is
       part of the current [RFC 6486] manifest and that the resources are
       covered by the RPKI certificate.

   2.  Constructing the certification path for the signer's certificate.
       All of the needed certificates are expected to be readily
       available in the RPKI repository.  The certification path MUST be
       valid according to the validation algorithm in [RFC 5280] and the
       additional checks specified in [RFC 3779] associated with the IP
       Address Delegation certificate extension and the Autonomous
       System Identifier Delegation certificate extension.  If
       certification path validation is unsuccessful, then validation
       MUST fail.

   3.  Validating the CMS SignedData as specified in [RFC 5652] using the
       public key from the validated signer's certificate.  If the
       signature validation is unsuccessful, then validation MUST fail.

   4.  Verifying that the IP Address Delegation certificate extension
       [RFC 3779] covers all of the address ranges of the geofeed file.
       If all of the address ranges are not covered, then validation
       MUST fail.

   All of these steps MUST be successful to consider the geofeed file
   signature as valid.

   As the signer specifies the covered RPKI resources relevant to the
   signature, the RPKI certificate covering the inetnum: object's
   address range is included in the CMS SignedData certificates field
   [RFC 5652].

   Identifying the private key associated with the certificate and
   getting the department with the Hardware Security Module (HSM) to
   sign the CMS blob is left as an exercise for the implementor.  On the
   other hand, verifying the signature requires no complexity; the
   certificate, which can be validated in the public RPKI, has the
   needed public key.

   The appendix MUST be hidden as a series of "#" comments at the end of
   the geofeed file.  The following is a cryptographically incorrect,
   albeit simple, example.  A correct and full example is in Appendix A.

       # RPKI Signature: 192.0.2.0 - 192.0.2.255
       # MIIGlwYJKoZIhvcNAQcCoIIGiDCCBoQCAQMxDTALBglghkgBZQMEAgEwDQYLKoZ
       # IhvcNAQkQAS+gggSxMIIErTCCA5WgAwIBAgIUJ605QIPX8rW5m4Zwx3WyuW7hZu
       ...
       # imwYkXpiMxw44EZqDjl36MiWsRDLdgoijBBcGbibwyAfGeR46k5raZCGvxG+4xa
       # O8PDTxTfIYwAnBjRBKAqAZ7yX5xHfm58jUXsZJ7Ileq1S7G6Kk=
       # End Signature: 192.0.2.0 - 192.0.2.255

   The signature does not cover the signature lines.

   The bracketing "# RPKI Signature:" and "# End Signature:" MUST be
   present following the model as shown.  Their IP address range MUST
   match that of the inetnum: URL followed to the file.

   [RPKI-RSC] describes and provides code for a CMS profile for a
   general purpose listing of checksums (a "checklist") for use with the
   Resource Public Key Infrastructure (RPKI).  It provides usable,
   albeit complex, code to sign geofeed files.

   [RPKI-RTA] describes a CMS profile for a general purpose Resource
   Tagged Attestation (RTA) based on the RPKI.  While this is expected
   to become applicable in the long run, for the purposes of this
   document, a self-signed root trust anchor is used.

5.  Operational Considerations

   To create the needed inetnum: objects, an operator wishing to
   register the location of their geofeed file needs to coordinate with
   their Regional Internet Registry (RIR) or National Internet Registry
   (NIR) and/or any provider Local Internet Registry (LIR) that has
   assigned address ranges to them.  RIRs/NIRs provide means for
   assignees to create and maintain inetnum: objects.  They also provide
   means of assigning or sub-assigning IP address resources and allowing
   the assignee to create WHOIS data, including inetnum: objects,
   thereby referring to geofeed files.

   The geofeed files MUST be published via and fetched using HTTPS
   [RFC 2818].

   When using data from a geofeed file, one MUST ignore data outside the
   referring inetnum: object's inetnum: attribute address range.

   If and only if the geofeed file is not signed per Section 4, then
   multiple inetnum: objects MAY refer to the same geofeed file, and the
   consumer MUST use only lines in the geofeed file where the prefix is
   covered by the address range of the inetnum: object's URL it has
   followed.

   If the geofeed file is signed, and the signer's certificate changes,
   the signature in the geofeed file MUST be updated.

   It is good key hygiene to use a given key for only one purpose.  To
   dedicate a signing private key for signing a geofeed file, an RPKI
   Certification Authority (CA) may issue a subordinate certificate
   exclusively for the purpose shown in Appendix A.

   To minimize the load on RIR WHOIS [RFC 3912] services, use of the
   RIR's FTP [RFC 959] services SHOULD be used for large-scale access to
   gather geofeed URLs.  This also provides bulk access instead of
   fetching by brute-force search through the IP space.

   Currently, geolocation providers have bulk WHOIS data access at all
   the RIRs.  An anonymized version of such data is openly available for
   all RIRs except ARIN, which requires an authorization.  However, for
   users without such authorization, the same result can be achieved
   with extra RDAP effort.  There is open-source code to pass over such
   data across all RIRs, collect all geofeed references, and process
   them [GEOFEED-FINDER].

   To prevent undue load on RPSL and geofeed servers, entity-fetching
   geofeed data using these mechanisms MUST NOT do frequent real-time
   lookups.  Section 3.4 of [RFC 8805] suggests use of the HTTP Expires
   header [RFC 7234] to signal when geofeed data should be refetched.  As
   the data change very infrequently, in the absence of such an HTTP
   Header signal, collectors SHOULD NOT fetch more frequently than
   weekly.  It would be polite not to fetch at magic times such as
   midnight UTC, the first of the month, etc., because too many others
   are likely to do the same.

6.  Privacy Considerations

   [RFC 8805] geofeed data may reveal the approximate location of an IP
   address, which might in turn reveal the approximate location of an
   individual user.  Unfortunately, [RFC 8805] provides no privacy
   guidance on avoiding or ameliorating possible damage due to this
   exposure of the user.  In publishing pointers to geofeed files as
   described in this document, the operator should be aware of this
   exposure in geofeed data and be cautious.  All the privacy
   considerations of Section 4 of [RFC 8805] apply to this document.

   Where [RFC 8805] provided the ability to publish location data, this
   document makes bulk access to those data readily available.  This is
   a goal, not an accident.

7.  Security Considerations

   It is generally prudent for a consumer of geofeed data to also use
   other sources to cross validate the data.  All the security
   considerations of [RFC 8805] apply here as well.

   As mentioned in Section 4, many RPSL repositories have weak, if any,
   authentication.  This allows spoofing of inetnum: objects pointing to
   malicious geofeed files.  Section 4 suggests an unfortunately complex
   method for stronger authentication based on the RPKI.

   For example, if an inetnum: for a wide address range (e.g., a /16)
   points to an RPKI-signed geofeed file, a customer or attacker could
   publish an unsigned equal or narrower (e.g., a /24) inetnum: in a
   WHOIS registry that has weak authorization, abusing the rule that the
   most-specific inetnum: object with a geofeed reference MUST be used.

   If signatures were mandatory, the above attack would be stymied, but
   of course that is not happening anytime soon.

   The RPSL providers have had to throttle fetching from their servers
   due to too-frequent queries.  Usually, they throttle by the querying
   IP address or block.  Similar defenses will likely need to be
   deployed by geofeed file servers.

8.  IANA Considerations

   IANA has registered object identifiers for one content type in the
   "SMI Security for S/MIME CMS Content Type (1.2.840.113549.1.9.16.1)"
   registry as follows:

            +=========+==========================+============+
            | Decimal | Description              | References |
            +=========+==========================+============+
            | 47      | id-ct-geofeedCSVwithCRLF | RFC 9092   |
            +---------+--------------------------+------------+

                                  Table 1

9.  References

9.1.  Normative References

   [RFC 2119]  Bradner, S., "Key words for use in RFCs to Indicate
              Requirement Levels", BCP 14, RFC 2119,
              DOI 10.17487/RFC 2119, March 1997,
              <https://www.rfc-editor.org/info/RFC 2119>.

   [RFC 2622]  Alaettinoglu, C., Villamizar, C., Gerich, E., Kessens, D.,
              Meyer, D., Bates, T., Karrenberg, D., and M. Terpstra,
              "Routing Policy Specification Language (RPSL)", RFC 2622,
              DOI 10.17487/RFC 2622, June 1999,
              <https://www.rfc-editor.org/info/RFC 2622>.

   [RFC 2725]  Villamizar, C., Alaettinoglu, C., Meyer, D., and S.
              Murphy, "Routing Policy System Security", RFC 2725,
              DOI 10.17487/RFC 2725, December 1999,
              <https://www.rfc-editor.org/info/RFC 2725>.

   [RFC 2818]  Rescorla, E., "HTTP Over TLS", RFC 2818,
              DOI 10.17487/RFC 2818, May 2000,
              <https://www.rfc-editor.org/info/RFC 2818>.

   [RFC 3629]  Yergeau, F., "UTF-8, a transformation format of ISO
              10646", STD 63, RFC 3629, DOI 10.17487/RFC 3629, November
              2003, <https://www.rfc-editor.org/info/RFC 3629>.

   [RFC 3779]  Lynn, C., Kent, S., and K. Seo, "X.509 Extensions for IP
              Addresses and AS Identifiers", RFC 3779,
              DOI 10.17487/RFC 3779, June 2004,
              <https://www.rfc-editor.org/info/RFC 3779>.

   [RFC 4012]  Blunk, L., Damas, J., Parent, F., and A. Robachevsky,
              "Routing Policy Specification Language next generation
              (RPSLng)", RFC 4012, DOI 10.17487/RFC 4012, March 2005,
              <https://www.rfc-editor.org/info/RFC 4012>.

   [RFC 4648]  Josefsson, S., "The Base16, Base32, and Base64 Data
              Encodings", RFC 4648, DOI 10.17487/RFC 4648, October 2006,
              <https://www.rfc-editor.org/info/RFC 4648>.

   [RFC 5280]  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, DOI 10.17487/RFC 5280, May 2008,
              <https://www.rfc-editor.org/info/RFC 5280>.

   [RFC 5652]  Housley, R., "Cryptographic Message Syntax (CMS)", STD 70,
              RFC 5652, DOI 10.17487/RFC 5652, September 2009,
              <https://www.rfc-editor.org/info/RFC 5652>.

   [RFC 6481]  Huston, G., Loomans, R., and G. Michaelson, "A Profile for
              Resource Certificate Repository Structure", RFC 6481,
              DOI 10.17487/RFC 6481, February 2012,
              <https://www.rfc-editor.org/info/RFC 6481>.

   [RFC 6486]  Austein, R., Huston, G., Kent, S., and M. Lepinski,
              "Manifests for the Resource Public Key Infrastructure
              (RPKI)", RFC 6486, DOI 10.17487/RFC 6486, February 2012,
              <https://www.rfc-editor.org/info/RFC 6486>.

   [RFC 8174]  Leiba, B., "Ambiguity of Uppercase vs Lowercase in RFC
              2119 Key Words", BCP 14, RFC 8174, DOI 10.17487/RFC 8174,
              May 2017, <https://www.rfc-editor.org/info/RFC 8174>.

   [RFC 8805]  Kline, E., Duleba, K., Szamonek, Z., Moser, S., and W.
              Kumari, "A Format for Self-Published IP Geolocation
              Feeds", RFC 8805, DOI 10.17487/RFC 8805, August 2020,
              <https://www.rfc-editor.org/info/RFC 8805>.

   [RFC 8933]  Housley, R., "Update to the Cryptographic Message Syntax
              (CMS) for Algorithm Identifier Protection", RFC 8933,
              DOI 10.17487/RFC 8933, October 2020,
              <https://www.rfc-editor.org/info/RFC 8933>.

9.2.  Informative References

   [GEOFEED-FINDER]
              "geofeed-finder", commit 5f557a4, June 2021,
              <https://github.com/massimocandela/geofeed-finder>.

   [INET6NUM] RIPE NCC, "Description of the INET6NUM Object", October
              2019, <https://www.ripe.net/manage-ips-and-
              asns/db/support/documentation/ripe-database-documentation/
              rpsl-object-types/4-2-descriptions-of-primary-
              objects/4-2-3-description-of-the-inet6num-object>.

   [INETNUM]  RIPE NCC, "Description of the INETNUM Object", June 2020,
              <https://www.ripe.net/manage-ips-and-
              asns/db/support/documentation/ripe-database-documentation/
              rpsl-object-types/4-2-descriptions-of-primary-
              objects/4-2-4-description-of-the-inetnum-object>.

   [RFC 959]  Postel, J. and J. Reynolds, "File Transfer Protocol",
              STD 9, RFC 959, DOI 10.17487/RFC 959, October 1985,
              <https://www.rfc-editor.org/info/RFC 959>.

   [RFC 3912]  Daigle, L., "WHOIS Protocol Specification", RFC 3912,
              DOI 10.17487/RFC 3912, September 2004,
              <https://www.rfc-editor.org/info/RFC 3912>.

   [RFC 4632]  Fuller, V. and T. Li, "Classless Inter-domain Routing
              (CIDR): The Internet Address Assignment and Aggregation
              Plan", BCP 122, RFC 4632, DOI 10.17487/RFC 4632, August
              2006, <https://www.rfc-editor.org/info/RFC 4632>.

   [RFC 5485]  Housley, R., "Digital Signatures on Internet-Draft
              Documents", RFC 5485, DOI 10.17487/RFC 5485, March 2009,
              <https://www.rfc-editor.org/info/RFC 5485>.

   [RFC 7234]  Fielding, R., Ed., Nottingham, M., Ed., and J. Reschke,
              Ed., "Hypertext Transfer Protocol (HTTP/1.1): Caching",
              RFC 7234, DOI 10.17487/RFC 7234, June 2014,
              <https://www.rfc-editor.org/info/RFC 7234>.

   [RFC 7485]  Zhou, L., Kong, N., Shen, S., Sheng, S., and A. Servin,
              "Inventory and Analysis of WHOIS Registration Objects",
              RFC 7485, DOI 10.17487/RFC 7485, March 2015,
              <https://www.rfc-editor.org/info/RFC 7485>.

   [RFC 7909]  Kisteleki, R. and B. Haberman, "Securing Routing Policy
              Specification Language (RPSL) Objects with Resource Public
              Key Infrastructure (RPKI) Signatures", RFC 7909,
              DOI 10.17487/RFC 7909, June 2016,
              <https://www.rfc-editor.org/info/RFC 7909>.

   [RFC 9082]  Hollenbeck, S. and A. Newton, "Registration Data Access
              Protocol (RDAP) Query Format", STD 95, RFC 9082,
              DOI 10.17487/RFC 9082, June 2021,
              <https://www.rfc-editor.org/info/RFC 9082>.

   [RIPE-DB]  RIPE NCC, "RIPE Database Documentation",
              <https://www.ripe.net/manage-ips-and-
              asns/db/support/documentation/ripe-database-
              documentation>.

   [RIPE181]  RIPE NCC, "Representation Of IP Routing Policies In A
              Routing Registry", October 1994,
              <https://www.ripe.net/publications/docs/ripe-181>.

   [RIPE81]   RIPE NCC, "Representation Of IP Routing Policies In The
              RIPE Database", February 1993,
              <https://www.ripe.net/publications/docs/ripe-081>.

   [RPKI-RSC] Snijders, J., Harrison, T., and B. Maddison, "Resource
              Public Key Infrastructure (RPKI) object profile for Signed
              Checklist (RSC)", Work in Progress, Internet-Draft, draft-
              ietf-sidrops-rpki-rsc-04, 31 May 2021,
              <https://datatracker.ietf.org/doc/html/draft-ietf-sidrops-
              rpki-rsc-04>.

   [RPKI-RTA] Michaelson, G. G., Huston, G., Harrison, T., Bruijnzeels,
              T., and M. Hoffmann, "A profile for Resource Tagged
              Attestations (RTAs)", Work in Progress, Internet-Draft,
              draft-ietf-sidrops-rpki-rta-00, 21 January 2021,
              <https://datatracker.ietf.org/doc/html/draft-ietf-sidrops-
              rpki-rta-00>.

Appendix A.  Example

   This appendix provides an example that includes a trust anchor, a CA
   certificate subordinate to the trust anchor, an end-entity
   certificate subordinate to the CA for signing the geofeed, and a
   detached signature.

   The trust anchor is represented by a self-signed certificate.  As
   usual in the RPKI, the trust anchor has authority over all IPv4
   address blocks, all IPv6 address blocks, and all Autonomous System
   (AS) numbers.

       -----BEGIN CERTIFICATE-----
       MIIEPjCCAyagAwIBAgIUPsUFJ4e/7pKZ6E14aBdkbYzms1gwDQYJKoZIhvcNAQEL
       BQAwFTETMBEGA1UEAxMKZXhhbXBsZS10YTAeFw0yMDA5MDMxODU0NTRaFw0zMDA5
       MDExODU0NTRaMBUxEzARBgNVBAMTCmV4YW1wbGUtdGEwggEiMA0GCSqGSIb3DQEB
       AQUAA4IBDwAwggEKAoIBAQCelMmMDCGBhqn/a3VrNAoKMr1HVLKxGoG7VF/13HZJ
       0twObUZlh3Jz+XeD+kNAURhELWTrsgdTkQQfqinqOuRemxTl55+x7nLpe5nmwaBH
       XqqDOHubmkbAGanGcm6T/rD9KNk1Z46Uc2p7UYu0fwNO0mo0aqFL2FSyvzZwziNe
       g7ELYZ4a3LvGn81JfP/JvM6pgtoMNuee5RV6TWaz7LV304ICj8Bhphy/HFpOA1rb
       O9gs8CUMgqz+RroAIa8cV8gbF/fPCz9Ofl7Gdmib679JxxFrW4wRJ0nMJgJmsZXq
       jaVc0g7ORc+eIAcHw7Uroc6h7Y7lGjOkDZF75j0mLQa3AgMBAAGjggGEMIIBgDAd
       BgNVHQ4EFgQU3hNEuwvUGNCHY1TBatcUR03pNdYwHwYDVR0jBBgwFoAU3hNEuwvU
       GNCHY1TBatcUR03pNdYwDwYDVR0TAQH/BAUwAwEB/zAOBgNVHQ8BAf8EBAMCAQYw
       GAYDVR0gAQH/BA4wDDAKBggrBgEFBQcOAjCBuQYIKwYBBQUHAQsEgawwgakwPgYI
       KwYBBQUHMAqGMnJzeW5jOi8vcnBraS5leGFtcGxlLm5ldC9yZXBvc2l0b3J5L2V4
       YW1wbGUtdGEubWZ0MDUGCCsGAQUFBzANhilodHRwczovL3JyZHAuZXhhbXBsZS5u
       ZXQvbm90aWZpY2F0aW9uLnhtbDAwBggrBgEFBQcwBYYkcnN5bmM6Ly9ycGtpLmV4
       YW1wbGUubmV0L3JlcG9zaXRvcnkvMCcGCCsGAQUFBwEHAQH/BBgwFjAJBAIAATAD
       AwEAMAkEAgACMAMDAQAwHgYIKwYBBQUHAQgEEjAQoA4wDDAKAgEAAgUA/////zAN
       BgkqhkiG9w0BAQsFAAOCAQEAgZFQ0Sf3CI5Hwev61AUWHYOFniy69PuDTq+WnhDe
       xX5rpjSDRrs5L756KSKJcaOJ36lzO45lfOPSY9fH6x30pnipaqRA7t5rApky24jH
       cSUA9iRednzxhVyGjWKnfAKyNo2MYfaOAT0db1GjyLKbOADI9FowtHBUu+60ykcM
       Quz66XrzxtmxlrRcAnbv/HtV17qOd4my6q5yjTPR1dmYN9oR/2ChlXtGE6uQVguA
       rvNZ5CwiJ1TgGGTB7T8ORHwWU6dGTc0jk2rESAaikmLi1roZSNC21fckhapEit1a
       x8CyiVxjcVc5e0AmS1rJfL6LIfwmtive/N/eBtIM92HkBA==
       -----END CERTIFICATE-----

   The CA certificate is issued by the trust anchor.  This certificate
   grants authority over one IPv4 address block (192.0.2.0/24) and two
   AS numbers (64496 and 64497).

       -----BEGIN CERTIFICATE-----
       MIIFBzCCA++gAwIBAgIUcyCzS10hdfG65kbRq7toQAvRDKowDQYJKoZIhvcNAQEL
       BQAwFTETMBEGA1UEAxMKZXhhbXBsZS10YTAeFw0yMDA5MDMxOTAyMTlaFw0yMTA5
       MDMxOTAyMTlaMDMxMTAvBgNVBAMTKDNBQ0UyQ0VGNEZCMjFCN0QxMUUzRTE4NEVG
       QzFFMjk3QjM3Nzg2NDIwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQDc
       zz1qwTxC2ocw5rqp8ktm2XyYkl8riBVuqlXwfefTxsR2YFpgz9vkYUd5Az9EVEG7
       6wGIyZbtmhK63eEeaqbKz2GHub467498BXeVrYysO+YuIGgCEYKznNDZ4j5aaDbo
       j5+4/z0Qvv6HEsxQd0f8br6lKJwgeRM6+fm7796HNPB0aqD7Zj9NRCLXjbB0DCgJ
       liH6rXMKR86ofgll9V2mRjesvhdKYgkGbOif9rvxVpLJ/6zdru5CE9yeuJZ59l+n
       YH/r6PzdJ4Q7yKrJX8qD6A60j4+biaU4MQ72KpsjhQNTTqF/HRwi0N54GDaknEwE
       TnJQHgLJDYqww9yKWtjjAgMBAAGjggIvMIICKzAdBgNVHQ4EFgQUOs4s70+yG30R
       4+GE78Hil7N3hkIwHwYDVR0jBBgwFoAU3hNEuwvUGNCHY1TBatcUR03pNdYwDwYD
       VR0TAQH/BAUwAwEB/zAOBgNVHQ8BAf8EBAMCAQYwGAYDVR0gAQH/BA4wDDAKBggr
       BgEFBQcOAjBhBgNVHR8EWjBYMFagVKBShlByc3luYzovL3Jwa2kuZXhhbXBsZS5u
       ZXQvcmVwb3NpdG9yeS8zQUNFMkNFRjRGQjIxQjdEMTFFM0UxODRFRkMxRTI5N0Iz
       Nzc4NjQyLmNybDBOBggrBgEFBQcBAQRCMEAwPgYIKwYBBQUHMAKGMnJzeW5jOi8v
       cnBraS5leGFtcGxlLm5ldC9yZXBvc2l0b3J5L2V4YW1wbGUtdGEuY2VyMIG5Bggr
       BgEFBQcBCwSBrDCBqTA+BggrBgEFBQcwCoYycnN5bmM6Ly9ycGtpLmV4YW1wbGUu
       bmV0L3JlcG9zaXRvcnkvZXhhbXBsZS1jYS5tZnQwNQYIKwYBBQUHMA2GKWh0dHBz
       Oi8vcnJkcC5leGFtcGxlLm5ldC9ub3RpZmljYXRpb24ueG1sMDAGCCsGAQUFBzAF
       hiRyc3luYzovL3Jwa2kuZXhhbXBsZS5uZXQvcmVwb3NpdG9yeS8wHwYIKwYBBQUH
       AQcBAf8EEDAOMAwEAgABMAYDBADAAAIwHgYIKwYBBQUHAQgEEjAQoA4wDDAKAgMA
       +/ACAwD78TANBgkqhkiG9w0BAQsFAAOCAQEAnLu+d1ZsUTiX3YWGueTHIalW4ad0
       Kupi7pYMV2nXbxNGmdJMol9BkzVz9tj55ReMghUU4YLm/ICYe4fz5e0T8o9s/vIm
       cGS29+WoGuiznMitpvbS/379gaMezk6KpqjH6Brw6meMqy09phmcmvm3x3WTmx09
       mLlQneMptwk8qSYcnMUmGLJs+cVqmkOa3sWRdw8WrGu6QqYtQz3HFZQojF06YzEq
       V/dBdCFdEOwTfVl2n2XqhoJl/oEBdC4uu2G0qRk3+WVs+uwVHP0Ttsbt7TzFgZfY
       yxqvOg6QoldxZVZmHHncKmETu/BqCDGJot9may31ukrx34Bu+XFMVihm0w==
       -----END CERTIFICATE-----

   The end-entity certificate is issued by the CA.  This certificate
   grants signature authority for one IPv4 address block (192.0.2.0/24).
   Signature authority for AS numbers is not needed for geofeed data
   signatures, so no AS numbers are included in the certificate.

       -----BEGIN CERTIFICATE-----
       MIIEpTCCA42gAwIBAgIUJ605QIPX8rW5m4Zwx3WyuW7hZuQwDQYJKoZIhvcNAQEL
       BQAwMzExMC8GA1UEAxMoM0FDRTJDRUY0RkIyMUI3RDExRTNFMTg0RUZDMUUyOTdC
       Mzc3ODY0MjAeFw0yMTA1MjAxNjA1NDVaFw0yMjAzMTYxNjA1NDVaMDMxMTAvBgNV
       BAMTKDkxNDY1MkEzQkQ1MUMxNDQyNjAxOTg4ODlGNUM0NUFCRjA1M0ExODcwggEi
       MA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQCycTQrOb/qB2W3i3Ki8PhA/DEW
       yii2TgGo9pgCwO9lsIRI6Zb/k+aSiWWP9kSczlcQgtPCVwr62hTQZCIowBN0BL0c
       K0/5k1imJdi5qdM3nvKswM8CnoR11vB8pQFwruZmr5xphXRvE+mzuJVLgu2V1upm
       BXuWloeymudh6WWJ+GDjwPXO3RiXBejBrOFNXhaFLe08y4DPfr/S/tXJOBm7QzQp
       tmbPLYtGfprYu45liFFqqP94UeLpISfXd36AKGzqTFCcc3EW9l5UFE1MFLlnoEog
       qtoLoKABt0IkOFGKeC/EgeaBdWLe469ddC9rQft5w6g6cmxG+aYDdIEB34zrAgMB
       AAGjggGvMIIBqzAdBgNVHQ4EFgQUkUZSo71RwUQmAZiIn1xFq/BToYcwHwYDVR0j
       BBgwFoAUOs4s70+yG30R4+GE78Hil7N3hkIwDAYDVR0TAQH/BAIwADAOBgNVHQ8B
       Af8EBAMCB4AwGAYDVR0gAQH/BA4wDDAKBggrBgEFBQcOAjBhBgNVHR8EWjBYMFag
       VKBShlByc3luYzovL3Jwa2kuZXhhbXBsZS5uZXQvcmVwb3NpdG9yeS8zQUNFMkNF
       RjRGQjIxQjdEMTFFM0UxODRFRkMxRTI5N0IzNzc4NjQyLmNybDBsBggrBgEFBQcB
       AQRgMF4wXAYIKwYBBQUHMAKGUHJzeW5jOi8vcnBraS5leGFtcGxlLm5ldC9yZXBv
       c2l0b3J5LzNBQ0UyQ0VGNEZCMjFCN0QxMUUzRTE4NEVGQzFFMjk3QjM3Nzg2NDIu
       Y2VyMBkGCCsGAQUFBwEHAQH/BAowCDAGBAIAAQUAMEUGCCsGAQUFBwELBDkwNzA1
       BggrBgEFBQcwDYYpaHR0cHM6Ly9ycmRwLmV4YW1wbGUubmV0L25vdGlmaWNhdGlv
       bi54bWwwDQYJKoZIhvcNAQELBQADggEBAEjC98gVp0Mb7uiKaHylP0453mtJ+AkN
       07fsK/qGw/e90DJv7cp1hvjj4uy3sgf7PJQ7cKNGrgybq/lE0jce+ARgVjbi2Brz
       ZsWAnB846Snwsktw6cenaif6Aww6q00NspAepMBd2Vg/9sKFvOwJFVOgNcqiQiXP
       5rGJPWBcOMv52a/7adjfXwpnOijiTOgMloQGmC2TPZpydZKjlxEATdFEQssa33xD
       nlpp+/r9xuNVYRtRcC36oWraVA3jzN6F6rDE8r8xs3ylISVz6JeCQ4YRYwbMsjjc
       /tiJLM7ZYxIe5IrYz1ZtN6n/SEssJAswRIgps2EhCt/HS2xAmGCOhgU=
       -----END CERTIFICATE-----

   The end-entity certificate is displayed below in detail.  For
   brevity, the other two certificates are not.

       0 1189: SEQUENCE {
       4  909:  SEQUENCE {
       8    3:   [0] {
      10    1:    INTEGER 2
             :     }
      13   20:   INTEGER 27AD394083D7F2B5B99B8670C775B2B96EE166E4
      35   13:   SEQUENCE {
      37    9:    OBJECT IDENTIFIER
             :     sha256WithRSAEncryption (1 2 840 113549 1 1 11)
      48    0:    NULL
             :     }
      50   51:   SEQUENCE {
      52   49:    SET {
      54   47:     SEQUENCE {
      56    3:      OBJECT IDENTIFIER commonName (2 5 4 3)
      61   40:      PrintableString
             :       '3ACE2CEF4FB21B7D11E3E184EFC1E297B3778642'
             :       }
             :      }
             :     }
     103   30:   SEQUENCE {
     105   13:    UTCTime 20/05/2021 16:05:45 GMT
     120   13:    UTCTime 16/03/2022 16:05:45 GMT
             :     }
     135   51:   SEQUENCE {
     137   49:    SET {
     139   47:     SEQUENCE {
     141    3:      OBJECT IDENTIFIER commonName (2 5 4 3)
     146   40:      PrintableString
             :       '914652A3BD51C144260198889F5C45ABF053A187'
             :       }
             :      }
             :     }
     188  290:   SEQUENCE {
     192   13:    SEQUENCE {
     194    9:     OBJECT IDENTIFIER rsaEncryption
             :      (1 2 840 113549 1 1 1)
     205    0:     NULL
             :      }
     207  271:    BIT STRING, encapsulates {
     212  266:     SEQUENCE {
     216  257:      INTEGER
             :       00 B2 71 34 2B 39 BF EA 07 65 B7 8B 72 A2 F0 F8
             :       40 FC 31 16 CA 28 B6 4E 01 A8 F6 98 02 C0 EF 65
             :       B0 84 48 E9 96 FF 93 E6 92 89 65 8F F6 44 9C CE
             :       57 10 82 D3 C2 57 0A FA DA 14 D0 64 22 28 C0 13
             :       74 04 BD 1C 2B 4F F9 93 58 A6 25 D8 B9 A9 D3 37
             :       9E F2 AC C0 CF 02 9E 84 75 D6 F0 7C A5 01 70 AE
             :       E6 66 AF 9C 69 85 74 6F 13 E9 B3 B8 95 4B 82 ED
             :       95 D6 EA 66 05 7B 96 96 87 B2 9A E7 61 E9 65 89
             :       F8 60 E3 C0 F5 CE DD 18 97 05 E8 C1 AC E1 4D 5E
             :       16 85 2D ED 3C CB 80 CF 7E BF D2 FE D5 C9 38 19
             :       BB 43 34 29 B6 66 CF 2D 8B 46 7E 9A D8 BB 8E 65
             :       88 51 6A A8 FF 78 51 E2 E9 21 27 D7 77 7E 80 28
             :       6C EA 4C 50 9C 73 71 16 F6 5E 54 14 4D 4C 14 B9
             :       67 A0 4A 20 AA DA 0B A0 A0 01 B7 42 24 38 51 8A
             :       78 2F C4 81 E6 81 75 62 DE E3 AF 5D 74 2F 6B 41
             :       FB 79 C3 A8 3A 72 6C 46 F9 A6 03 74 81 01 DF 8C
             :       EB
     477    3:      INTEGER 65537
             :       }
             :      }
             :     }
     482  431:   [3] {
     486  427:    SEQUENCE {
     490   29:     SEQUENCE {
     492    3:      OBJECT IDENTIFIER subjectKeyIdentifier (2 5 29 14)
     497   22:      OCTET STRING, encapsulates {
     499   20:       OCTET STRING
             :        91 46 52 A3 BD 51 C1 44 26 01 98 88 9F 5C 45 AB
             :        F0 53 A1 87
             :        }
             :       }
     521   31:     SEQUENCE {
     523    3:      OBJECT IDENTIFIER authorityKeyIdentifier (2 5 29 35)
     528   24:      OCTET STRING, encapsulates {
     530   22:       SEQUENCE {
     532   20:        [0]
             :         3A CE 2C EF 4F B2 1B 7D 11 E3 E1 84 EF C1 E2 97
             :         B3 77 86 42
             :         }
             :        }
             :       }
     554   12:     SEQUENCE {
     556    3:      OBJECT IDENTIFIER basicConstraints (2 5 29 19)
     561    1:      BOOLEAN TRUE
     564    2:      OCTET STRING, encapsulates {
     566    0:       SEQUENCE {}
             :        }
             :       }
     568   14:     SEQUENCE {
     570    3:      OBJECT IDENTIFIER keyUsage (2 5 29 15)
     575    1:      BOOLEAN TRUE
     578    4:      OCTET STRING, encapsulates {
     580    2:       BIT STRING 7 unused bits
             :        '1'B (bit 0)
             :        }
             :       }
     584   24:     SEQUENCE {
     586    3:      OBJECT IDENTIFIER certificatePolicies (2 5 29 32)
     591    1:      BOOLEAN TRUE
     594   14:      OCTET STRING, encapsulates {
     596   12:       SEQUENCE {
     598   10:        SEQUENCE {
     600    8:         OBJECT IDENTIFIER
             :          resourceCertificatePolicy (1 3 6 1 5 5 7 14 2)
             :          }
             :         }
             :        }
             :       }
     610   97:     SEQUENCE {
     612    3:      OBJECT IDENTIFIER cRLDistributionPoints (2 5 29 31)
     617   90:      OCTET STRING, encapsulates {
     619   88:       SEQUENCE {
     621   86:        SEQUENCE {
     623   84:         [0] {
     625   82:          [0] {
     627   80:           [6]
             :          'rsync://rpki.example.net/repository/3ACE2CEF4F'
             :          'B21B7D11E3E184EFC1E297B3778642.crl'
             :            }
             :           }
             :          }
             :         }
             :        }
             :       }
     709  108:     SEQUENCE {
     711    8:      OBJECT IDENTIFIER authorityInfoAccess
             :       (1 3 6 1 5 5 7 1 1)
     721   96:      OCTET STRING, encapsulates {
     723   94:       SEQUENCE {
     725   92:        SEQUENCE {
     727    8:         OBJECT IDENTIFIER caIssuers (1 3 6 1 5 5 7 48 2)
     737   80:         [6]
             :          'rsync://rpki.example.net/repository/3ACE2CEF4F'
             :          'B21B7D11E3E184EFC1E297B3778642.cer'
             :          }
             :         }
             :        }
             :       }
     819   25:     SEQUENCE {
     821    8:      OBJECT IDENTIFIER ipAddrBlocks (1 3 6 1 5 5 7 1 7)
     831    1:      BOOLEAN TRUE
     834   10:      OCTET STRING, encapsulates {
     836    8:       SEQUENCE {
     838    6:        SEQUENCE {
     840    2:         OCTET STRING 00 01
     844    0:         NULL
             :          }
             :         }
             :        }
             :       }
     846   69:     SEQUENCE {
     848    8:      OBJECT IDENTIFIER subjectInfoAccess
             :       (1 3 6 1 5 5 7 1 11)
     858   57:      OCTET STRING, encapsulates {
     860   55:       SEQUENCE {
     862   53:        SEQUENCE {
     864    8:         OBJECT IDENTIFIER '1 3 6 1 5 5 7 48 13'
     874   41:         [6]
             :          'https://rrdp.example.net/notification.xml'
             :          }
             :         }
             :        }
             :       }
             :      }
             :     }
             :    }
     917   13:  SEQUENCE {
     919    9:   OBJECT IDENTIFIER sha256WithRSAEncryption
             :    (1 2 840 113549 1 1 11)
     930    0:   NULL
             :    }
     932  257:  BIT STRING
             :   48 C2 F7 C8 15 A7 43 1B EE E8 8A 68 7C A5 3F 4E
             :   39 DE 6B 49 F8 09 0D D3 B7 EC 2B FA 86 C3 F7 BD
             :   D0 32 6F ED CA 75 86 F8 E3 E2 EC B7 B2 07 FB 3C
             :   94 3B 70 A3 46 AE 0C 9B AB F9 44 D2 37 1E F8 04
             :   60 56 36 E2 D8 1A F3 66 C5 80 9C 1F 38 E9 29 F0
             :   B2 4B 70 E9 C7 A7 6A 27 FA 03 0C 3A AB 4D 0D B2
             :   90 1E A4 C0 5D D9 58 3F F6 C2 85 BC EC 09 15 53
             :   A0 35 CA A2 42 25 CF E6 B1 89 3D 60 5C 38 CB F9
             :   D9 AF FB 69 D8 DF 5F 0A 67 3A 28 E2 4C E8 0C 96
             :   84 06 98 2D 93 3D 9A 72 75 92 A3 97 11 00 4D D1
             :   44 42 CB 1A DF 7C 43 9E 5A 69 FB FA FD C6 E3 55
             :   61 1B 51 70 2D FA A1 6A DA 54 0D E3 CC DE 85 EA
             :   B0 C4 F2 BF 31 B3 7C A5 21 25 73 E8 97 82 43 86
             :   11 63 06 CC B2 38 DC FE D8 89 2C CE D9 63 12 1E
             :   E4 8A D8 CF 56 6D 37 A9 FF 48 4B 2C 24 0B 30 44
             :   88 29 B3 61 21 0A DF C7 4B 6C 40 98 60 8E 86 05
             :   }

   To allow reproduction of the signature results, the end-entity
   private key is provided.  For brevity, the other two private keys are
   not.

    -----BEGIN RSA PRIVATE KEY-----
    MIIEpQIBAAKCAQEAsnE0Kzm/6gdlt4tyovD4QPwxFsootk4BqPaYAsDvZbCESOmW
    /5Pmkollj/ZEnM5XEILTwlcK+toU0GQiKMATdAS9HCtP+ZNYpiXYuanTN57yrMDP
    Ap6EddbwfKUBcK7mZq+caYV0bxPps7iVS4LtldbqZgV7lpaHsprnYellifhg48D1
    zt0YlwXowazhTV4WhS3tPMuAz36/0v7VyTgZu0M0KbZmzy2LRn6a2LuOZYhRaqj/
    eFHi6SEn13d+gChs6kxQnHNxFvZeVBRNTBS5Z6BKIKraC6CgAbdCJDhRingvxIHm
    gXVi3uOvXXQva0H7ecOoOnJsRvmmA3SBAd+M6wIDAQABAoIBAQCyB0FeMuKm8bRo
    18aKjFGSPEoZi53srIz5bvUgIi92TBLez7ZnzL6Iym26oJ+5th+lCHGO/dqlhXio
    pI50C5Yc9TFbblb/ECOsuCuuqKFjZ8CD3GVsHozXKJeMM+/o5YZXQrORj6UnwT0z
    ol/JE5pIGUCIgsXX6tz9s5BP3lUAvVQHsv6+vEVKLxQ3wj/1vIL8O/CN036EV0GJ
    mpkwmygPjfECT9wbWo0yn3jxJb36+M/QjjUP28oNIVn/IKoPZRXnqchEbuuCJ651
    IsaFSqtiThm4WZtvCH/IDq+6/dcMucmTjIRcYwW7fdHfjplllVPve9c/OmpWEQvF
    t3ArWUt5AoGBANs4764yHxo4mctLIE7G7l/tf9bP4KKUiYw4R4ByEocuqMC4yhmt
    MPCfOFLOQet71OWCkjP2L/7EKUe9yx7G5KmxAHY6jOjvcRkvGsl6lWFOsQ8p126M
    Y9hmGzMOjtsdhAiMmOWKzjvm4WqfMgghQe+PnjjSVkgTt+7BxpIuGBAvAoGBANBg
    26FF5cDLpixOd3Za1YXsOgguwCaw3Plvi7vUZRpa/zBMELEtyOebfakkIRWNm07l
    nE+lAZwxm+29PTD0nqCFE91teyzjnQaLO5kkAdJiFuVV3icLOGo399FrnJbKensm
    FGSli+3KxQhCNIJJfgWzq4bE0ioAMjdGbYXzIYQFAoGBAM6tuDJ36KDU+hIS6wu6
    O2TPSfZhF/zPo3pCWQ78/QDb+Zdw4IEiqoBA7F4NPVLg9Y/H8UTx9r/veqe7hPOo
    Ok7NpIzSmKTHkc5XfZ60Zn9OLFoKbaQ40a1kXoJdWEu2YROaUlAe9F6/Rog6PHYz
    vLE5qscRbu0XQhLkN+z7bg5bAoGBAKDsbDEb/dbqbyaAYpmwhH2sdRSkphg7Niwc
    DNm9qWa1J6Zw1+M87I6Q8naRREuU1IAVqqWHVLr/ROBQ6NTJ1Uc5/qFeT2XXUgkf
    taMKv61tuyjZK3sTmznMh0HfzUpWjEhWnCEuB+ZYVdmO52ZGw2A75RdrILL2+9Dc
    PvDXVubRAoGAdqXeSWoLxuzZXzl8rsaKrQsTYaXnOWaZieU1SL5vVe8nK257UDqZ
    E3ng2j5XPTUWli+aNGFEJGRoNtcQvO60O/sFZUhu52sqq9mWVYZNh1TB5aP8X+pV
    iFcZOLUvQEcN6PA+YQK5FU11rAI1M0Gm5RDnVnUl0L2xfCYxb7FzV6Y=
    -----END RSA PRIVATE KEY-----

   Signing of "192.0.2.0/24,US,WA,Seattle," (terminated by CR and LF)
   yields the following detached CMS signature.

    # RPKI Signature: 192.0.2.0 - 192.0.2.255
    # MIIGjwYJKoZIhvcNAQcCoIIGgDCCBnwCAQMxDTALBglghkgBZQMEAgEwDQYLKoZ
    # IhvcNAQkQAS+gggSpMIIEpTCCA42gAwIBAgIUJ605QIPX8rW5m4Zwx3WyuW7hZu
    # QwDQYJKoZIhvcNAQELBQAwMzExMC8GA1UEAxMoM0FDRTJDRUY0RkIyMUI3RDExR
    # TNFMTg0RUZDMUUyOTdCMzc3ODY0MjAeFw0yMTA1MjAxNjA1NDVaFw0yMjAzMTYx
    # NjA1NDVaMDMxMTAvBgNVBAMTKDkxNDY1MkEzQkQ1MUMxNDQyNjAxOTg4ODlGNUM
    # 0NUFCRjA1M0ExODcwggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQCycT
    # QrOb/qB2W3i3Ki8PhA/DEWyii2TgGo9pgCwO9lsIRI6Zb/k+aSiWWP9kSczlcQg
    # tPCVwr62hTQZCIowBN0BL0cK0/5k1imJdi5qdM3nvKswM8CnoR11vB8pQFwruZm
    # r5xphXRvE+mzuJVLgu2V1upmBXuWloeymudh6WWJ+GDjwPXO3RiXBejBrOFNXha
    # FLe08y4DPfr/S/tXJOBm7QzQptmbPLYtGfprYu45liFFqqP94UeLpISfXd36AKG
    # zqTFCcc3EW9l5UFE1MFLlnoEogqtoLoKABt0IkOFGKeC/EgeaBdWLe469ddC9rQ
    # ft5w6g6cmxG+aYDdIEB34zrAgMBAAGjggGvMIIBqzAdBgNVHQ4EFgQUkUZSo71R
    # wUQmAZiIn1xFq/BToYcwHwYDVR0jBBgwFoAUOs4s70+yG30R4+GE78Hil7N3hkI
    # wDAYDVR0TAQH/BAIwADAOBgNVHQ8BAf8EBAMCB4AwGAYDVR0gAQH/BA4wDDAKBg
    # grBgEFBQcOAjBhBgNVHR8EWjBYMFagVKBShlByc3luYzovL3Jwa2kuZXhhbXBsZ
    # S5uZXQvcmVwb3NpdG9yeS8zQUNFMkNFRjRGQjIxQjdEMTFFM0UxODRFRkMxRTI5
    # N0IzNzc4NjQyLmNybDBsBggrBgEFBQcBAQRgMF4wXAYIKwYBBQUHMAKGUHJzeW5
    # jOi8vcnBraS5leGFtcGxlLm5ldC9yZXBvc2l0b3J5LzNBQ0UyQ0VGNEZCMjFCN0
    # QxMUUzRTE4NEVGQzFFMjk3QjM3Nzg2NDIuY2VyMBkGCCsGAQUFBwEHAQH/BAowC
    # DAGBAIAAQUAMEUGCCsGAQUFBwELBDkwNzA1BggrBgEFBQcwDYYpaHR0cHM6Ly9y
    # cmRwLmV4YW1wbGUubmV0L25vdGlmaWNhdGlvbi54bWwwDQYJKoZIhvcNAQELBQA
    # DggEBAEjC98gVp0Mb7uiKaHylP0453mtJ+AkN07fsK/qGw/e90DJv7cp1hvjj4u
    # y3sgf7PJQ7cKNGrgybq/lE0jce+ARgVjbi2BrzZsWAnB846Snwsktw6cenaif6A
    # ww6q00NspAepMBd2Vg/9sKFvOwJFVOgNcqiQiXP5rGJPWBcOMv52a/7adjfXwpn
    # OijiTOgMloQGmC2TPZpydZKjlxEATdFEQssa33xDnlpp+/r9xuNVYRtRcC36oWr
    # aVA3jzN6F6rDE8r8xs3ylISVz6JeCQ4YRYwbMsjjc/tiJLM7ZYxIe5IrYz1ZtN6
    # n/SEssJAswRIgps2EhCt/HS2xAmGCOhgUxggGqMIIBpgIBA4AUkUZSo71RwUQmA
    # ZiIn1xFq/BToYcwCwYJYIZIAWUDBAIBoGswGgYJKoZIhvcNAQkDMQ0GCyqGSIb3
    # DQEJEAEvMBwGCSqGSIb3DQEJBTEPFw0yMTA1MjAxNjI4MzlaMC8GCSqGSIb3DQE
    # JBDEiBCAr4vKeUvHJINsE0YQwUMxoo48qrOU+iPuFbQR8qX3BFjANBgkqhkiG9w
    # 0BAQEFAASCAQB85HsCBrU3EcVOcf4nC6Z3jrOjT+fVlyTDAObF6GTNWgrxe7jSA
    # Inyf51UzuIGqhVY3sQiiXbdWcVYtPb4118KvyeXh8A/HLp4eeAJntl9D3igt38M
    # o84q5pf9pTQXx3hbsm51ilpOip/TKVMqzE42s6OPox3M0+6eKH3/vBKnw1s1ayM
    # 0MUnPDTBfZL3JJEGPWfIZHEcrypevbqR7Jjsz5vp0qyF2D9v+w+nyhZOPmuePm7
    # YqLyOw/E99PVBs9uI+hmBiCz/BK2Z3VRjrrlrUU+49eldSTkZ2sJyhCbbV2Ufgi
    # S2FOquAgJzjilyN3BDQLV8Rp9cGh0PpVslKH2na
    # End Signature: 192.0.2.0 - 192.0.2.255

Acknowledgments

   Thanks to Rob Austein for CMS and detached signature clue, George
   Michaelson for the first and substantial external review, and Erik
   Kline who was too shy to agree to coauthorship.  Additionally, we
   express our gratitude to early implementors, including Menno
   Schepers; Flavio Luciani; Eric Dugas; Job Snijders, who provided
   running code; and Kevin Pack.  Also, thanks to the following
   geolocation providers who are consuming geofeeds with this described
   solution: Jonathan Kosgei (ipdata.co), Ben Dowling (ipinfo.io), and
   Pol Nisenblat (bigdatacloud.com).  For an amazing number of helpful
   reviews, we thank Adrian Farrel, Antonio Prado, Francesca Palombini,
   Jean-Michel Combes (INTDIR), John Scudder, Kyle Rose (SECDIR), Martin
   Duke, Murray Kucherawy, Paul Kyzivat (GENART), Rob Wilton, and Roman
   Danyliw.  The authors also thank George Michaelson, the awesome
   document shepherd.

Authors' Addresses

   Randy Bush
   IIJ & Arrcus
   5147 Crystal Springs
   Bainbridge Island, Washington 98110
   United States of America

   Email: randy@psg.com


   Massimo Candela
   NTT
   Siriusdreef 70-72
   2132 WT Hoofddorp
   Netherlands

   Email: massimo@ntt.net


   Warren Kumari
   Google
   1600 Amphitheatre Parkway
   Mountain View, CA 94043
   United States of America

   Email: warren@kumari.net


   Russ Housley
   Vigil Security, LLC
   516 Dranesville Road
   Herndon, VA 20170
   United States of America

   Email: housley@vigilsec.com



RFC TOTAL SIZE: 50255 bytes
PUBLICATION DATE: Monday, July 26th, 2021
LEGAL RIGHTS: The IETF Trust (see BCP 78)      


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