<?xml version='1.0' encoding='utf-8'?>
<rfc xmlns:xi="http://www.w3.org/2001/XInclude" version="3" category="std" consensus="true" docName="draft-ietf-opsawg-finding-geofeeds-17" indexInclude="true" ipr="trust200902" number="9092" prepTime="2021-07-26T12:47:29" scripts="Common,Latin" sortRefs="true" submissionType="IETF" symRefs="true" tocDepth="3" tocInclude="true" xml:lang="en">
  <link href="https://datatracker.ietf.org/doc/draft-ietf-opsawg-finding-geofeeds-17" rel="prev"/>
  <link href="https://dx.doi.org/10.17487/rfc9092" rel="alternate"/>
  <link href="urn:issn:2070-1721" rel="alternate"/>
  <front>
    <title abbrev="Finding Geofeeds">Finding and Using Geofeed Data</title>
    <seriesInfo name="RFC" value="9092" stream="IETF"/>
    <author fullname="Randy Bush" initials="R." surname="Bush">
      <organization showOnFrontPage="true">IIJ &amp; Arrcus</organization>
      <address>
        <postal>
          <street>5147 Crystal Springs</street>
          <city>Bainbridge Island</city>
          <region>Washington</region>
          <code>98110</code>
          <country>United States of America</country>
        </postal>
        <email>randy@psg.com</email>
      </address>
    </author>
    <author fullname="Massimo Candela" initials="M." surname="Candela">
      <organization showOnFrontPage="true">NTT</organization>
      <address>
        <postal>
          <street>Siriusdreef 70-72</street>
          <city>Hoofddorp</city>
          <code>2132 WT</code>
          <country>Netherlands</country>
        </postal>
        <email>massimo@ntt.net</email>
      </address>
    </author>
    <author fullname="Warren Kumari" initials="W." surname="Kumari">
      <organization showOnFrontPage="true">Google</organization>
      <address>
        <postal>
          <street>1600 Amphitheatre Parkway</street>
          <city>Mountain View</city>
          <region>CA</region>
          <code>94043</code>
          <country>United States of America</country>
        </postal>
        <email>warren@kumari.net</email>
      </address>
    </author>
    <author fullname="Russ Housley" initials="R" surname="Housley">
      <organization abbrev="Vigil Security" showOnFrontPage="true">Vigil Security, LLC</organization>
      <address>
        <postal>
          <street>516 Dranesville Road</street>
          <city>Herndon</city>
          <region>VA</region>
          <code>20170</code>
          <country>United States of America</country>
        </postal>
        <email>housley@vigilsec.com</email>
      </address>
    </author>
    <date month="07" year="2021"/>
    <keyword>geolocation</keyword>
    <keyword>geo-location</keyword>
    <keyword>RPSL</keyword>
    <abstract pn="section-abstract">
      <t indent="0" pn="section-abstract-1">
        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.
      </t>
    </abstract>
    <boilerplate>
      <section anchor="status-of-memo" numbered="false" removeInRFC="false" toc="exclude" pn="section-boilerplate.1">
        <name slugifiedName="name-status-of-this-memo">Status of This Memo</name>
        <t indent="0" pn="section-boilerplate.1-1">
            This is an Internet Standards Track document.
        </t>
        <t indent="0" pn="section-boilerplate.1-2">
            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.
        </t>
        <t indent="0" pn="section-boilerplate.1-3">
            Information about the current status of this document, any
            errata, and how to provide feedback on it may be obtained at
            <eref target="https://www.rfc-editor.org/info/rfc9092" brackets="none"/>.
        </t>
      </section>
      <section anchor="copyright" numbered="false" removeInRFC="false" toc="exclude" pn="section-boilerplate.2">
        <name slugifiedName="name-copyright-notice">Copyright Notice</name>
        <t indent="0" pn="section-boilerplate.2-1">
            Copyright (c) 2021 IETF Trust and the persons identified as the
            document authors. All rights reserved.
        </t>
        <t indent="0" pn="section-boilerplate.2-2">
            This document is subject to BCP 78 and the IETF Trust's Legal
            Provisions Relating to IETF Documents
            (<eref target="https://trustee.ietf.org/license-info" brackets="none"/>) 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.
        </t>
      </section>
    </boilerplate>
    <toc>
      <section anchor="toc" numbered="false" removeInRFC="false" toc="exclude" pn="section-toc.1">
        <name slugifiedName="name-table-of-contents">Table of Contents</name>
        <ul bare="true" empty="true" indent="2" spacing="compact" pn="section-toc.1-1">
          <li pn="section-toc.1-1.1">
            <t indent="0" keepWithNext="true" pn="section-toc.1-1.1.1"><xref derivedContent="1" format="counter" sectionFormat="of" target="section-1"/>.  <xref derivedContent="" format="title" sectionFormat="of" target="name-introduction">Introduction</xref></t>
            <ul bare="true" empty="true" indent="2" spacing="compact" pn="section-toc.1-1.1.2">
              <li pn="section-toc.1-1.1.2.1">
                <t indent="0" keepWithNext="true" pn="section-toc.1-1.1.2.1.1"><xref derivedContent="1.1" format="counter" sectionFormat="of" target="section-1.1"/>.  <xref derivedContent="" format="title" sectionFormat="of" target="name-requirements-language">Requirements Language</xref></t>
              </li>
            </ul>
          </li>
          <li pn="section-toc.1-1.2">
            <t indent="0" keepWithNext="true" pn="section-toc.1-1.2.1"><xref derivedContent="2" format="counter" sectionFormat="of" target="section-2"/>.  <xref derivedContent="" format="title" sectionFormat="of" target="name-geofeed-files">Geofeed Files</xref></t>
          </li>
          <li pn="section-toc.1-1.3">
            <t indent="0" pn="section-toc.1-1.3.1"><xref derivedContent="3" format="counter" sectionFormat="of" target="section-3"/>.  <xref derivedContent="" format="title" sectionFormat="of" target="name-inetnum-class">inetnum: Class</xref></t>
          </li>
          <li pn="section-toc.1-1.4">
            <t indent="0" pn="section-toc.1-1.4.1"><xref derivedContent="4" format="counter" sectionFormat="of" target="section-4"/>.  <xref derivedContent="" format="title" sectionFormat="of" target="name-authenticating-geofeed-data">Authenticating Geofeed Data</xref></t>
          </li>
          <li pn="section-toc.1-1.5">
            <t indent="0" pn="section-toc.1-1.5.1"><xref derivedContent="5" format="counter" sectionFormat="of" target="section-5"/>.  <xref derivedContent="" format="title" sectionFormat="of" target="name-operational-considerations">Operational Considerations</xref></t>
          </li>
          <li pn="section-toc.1-1.6">
            <t indent="0" pn="section-toc.1-1.6.1"><xref derivedContent="6" format="counter" sectionFormat="of" target="section-6"/>.  <xref derivedContent="" format="title" sectionFormat="of" target="name-privacy-considerations">Privacy Considerations</xref></t>
          </li>
          <li pn="section-toc.1-1.7">
            <t indent="0" pn="section-toc.1-1.7.1"><xref derivedContent="7" format="counter" sectionFormat="of" target="section-7"/>.  <xref derivedContent="" format="title" sectionFormat="of" target="name-security-considerations">Security Considerations</xref></t>
          </li>
          <li pn="section-toc.1-1.8">
            <t indent="0" pn="section-toc.1-1.8.1"><xref derivedContent="8" format="counter" sectionFormat="of" target="section-8"/>.  <xref derivedContent="" format="title" sectionFormat="of" target="name-iana-considerations">IANA Considerations</xref></t>
          </li>
          <li pn="section-toc.1-1.9">
            <t indent="0" pn="section-toc.1-1.9.1"><xref derivedContent="9" format="counter" sectionFormat="of" target="section-9"/>.  <xref derivedContent="" format="title" sectionFormat="of" target="name-references">References</xref></t>
            <ul bare="true" empty="true" indent="2" spacing="compact" pn="section-toc.1-1.9.2">
              <li pn="section-toc.1-1.9.2.1">
                <t indent="0" pn="section-toc.1-1.9.2.1.1"><xref derivedContent="9.1" format="counter" sectionFormat="of" target="section-9.1"/>.  <xref derivedContent="" format="title" sectionFormat="of" target="name-normative-references">Normative References</xref></t>
              </li>
              <li pn="section-toc.1-1.9.2.2">
                <t indent="0" pn="section-toc.1-1.9.2.2.1"><xref derivedContent="9.2" format="counter" sectionFormat="of" target="section-9.2"/>.  <xref derivedContent="" format="title" sectionFormat="of" target="name-informative-references">Informative References</xref></t>
              </li>
            </ul>
          </li>
          <li pn="section-toc.1-1.10">
            <t indent="0" pn="section-toc.1-1.10.1"><xref derivedContent="Appendix A" format="default" sectionFormat="of" target="section-appendix.a"/>.  <xref derivedContent="" format="title" sectionFormat="of" target="name-example">Example</xref></t>
          </li>
          <li pn="section-toc.1-1.11">
            <t indent="0" pn="section-toc.1-1.11.1"><xref derivedContent="" format="none" sectionFormat="of" target="section-appendix.b"/><xref derivedContent="" format="title" sectionFormat="of" target="name-acknowledgments">Acknowledgments</xref></t>
          </li>
          <li pn="section-toc.1-1.12">
            <t indent="0" pn="section-toc.1-1.12.1"><xref derivedContent="" format="none" sectionFormat="of" target="section-appendix.c"/><xref derivedContent="" format="title" sectionFormat="of" target="name-authors-addresses">Authors' Addresses</xref></t>
          </li>
        </ul>
      </section>
    </toc>
  </front>
  <middle>
    <section anchor="intro" numbered="true" toc="include" removeInRFC="false" pn="section-1">
      <name slugifiedName="name-introduction">Introduction</name>
      <t indent="0" pn="section-1-1">
        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.  <xref target="RFC8805" format="default" sectionFormat="of" derivedContent="RFC8805"/> 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.
      </t>
      <t indent="0" pn="section-1-2">
        This document specifies how to augment the Routing Policy
        Specification Language (RPSL) <xref target="RFC2725" format="default" sectionFormat="of" derivedContent="RFC2725"/> 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 <xref target="RFC4012" format="default" sectionFormat="of" derivedContent="RFC4012"/>.
      </t>
      <t indent="0" pn="section-1-3">
        The reader may find <xref target="INETNUM" format="default" sectionFormat="of" derivedContent="INETNUM"/> and <xref target="INET6NUM" format="default" sectionFormat="of" derivedContent="INET6NUM"/> informative, and certainly more verbose,
        descriptions of the inetnum: database classes.
      </t>
      <t indent="0" pn="section-1-4">
        An optional utterly awesome but slightly complex means for
        authenticating geofeed data is also defined.
      </t>
      <section numbered="true" toc="include" removeInRFC="false" pn="section-1.1">
        <name slugifiedName="name-requirements-language">Requirements Language</name>
        <t indent="0" pn="section-1.1-1">
    The key words "<bcp14>MUST</bcp14>", "<bcp14>MUST NOT</bcp14>",
    "<bcp14>REQUIRED</bcp14>", "<bcp14>SHALL</bcp14>", "<bcp14>SHALL NOT</bcp14>", "<bcp14>SHOULD</bcp14>", "<bcp14>SHOULD NOT</bcp14>",
    "<bcp14>RECOMMENDED</bcp14>", "<bcp14>NOT RECOMMENDED</bcp14>",
    "<bcp14>MAY</bcp14>", and "<bcp14>OPTIONAL</bcp14>" in this document are
    to be interpreted as described in BCP 14 <xref target="RFC2119" format="default" sectionFormat="of" derivedContent="RFC2119"/>
          <xref target="RFC8174" format="default" sectionFormat="of" derivedContent="RFC8174"/> when, and only when, they appear in all capitals,
    as shown here.
        </t>
      </section>
    </section>
    <section anchor="gf" numbered="true" toc="include" removeInRFC="false" pn="section-2">
      <name slugifiedName="name-geofeed-files">Geofeed Files</name>
      <t indent="0" pn="section-2-1">
        Geofeed files are described in <xref target="RFC8805" format="default" sectionFormat="of" derivedContent="RFC8805"/>.  They
        provide a facility for an IP address resource "owner" to
        associate those IP addresses to geographic locales.
      </t>
      <t indent="0" pn="section-2-2">
        Content providers and other parties who wish to locate an IP address
        to a geographic locale need to find the relevant geofeed data.  In
        <xref target="inetnum" format="default" sectionFormat="of" derivedContent="Section 3"/>, this document specifies how
        to find the relevant geofeed <xref target="RFC8805" format="default" sectionFormat="of" derivedContent="RFC8805"/>
        file given an IP address.
      </t>
      <t indent="0" pn="section-2-3">
        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.
      </t>
      <t indent="0" pn="section-2-4">
        Geofeed data do have privacy considerations (see <xref target="privacy" format="default" sectionFormat="of" derivedContent="Section 6"/>); this process makes bulk access
        to those data easier.
      </t>
      <t indent="0" pn="section-2-5">
        This document also suggests an optional signature to strongly
        authenticate the data in the geofeed files.
      </t>
    </section>
    <section anchor="inetnum" numbered="true" toc="include" removeInRFC="false" pn="section-3">
      <name slugifiedName="name-inetnum-class">inetnum: Class</name>
      <t indent="0" pn="section-3-1">
        The original RPSL specifications starting with <xref target="RIPE81" format="default" sectionFormat="of" derivedContent="RIPE81"/>, <xref target="RIPE181" format="default" sectionFormat="of" derivedContent="RIPE181"/>, and a trail of
        subsequent documents were written by the RIPE community.  The IETF
        standardized RPSL in <xref target="RFC2622" format="default" sectionFormat="of" derivedContent="RFC2622"/> and <xref target="RFC4012" format="default" sectionFormat="of" derivedContent="RFC4012"/>.  Since then, it has been modified and
        extensively enhanced in the Regional Internet Registry (RIR)
        community, mostly by RIPE <xref target="RIPE-DB" format="default" sectionFormat="of" derivedContent="RIPE-DB"/>.  Currently,
        change control effectively lies in the operator community.
      </t>
      <t indent="0" pn="section-3-2">
        The RPSL, and <xref target="RFC2725" format="default" sectionFormat="of" derivedContent="RFC2725"/> and <xref target="RFC4012" format="default" sectionFormat="of" derivedContent="RFC4012"/> 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.
      </t>
      <t indent="0" pn="section-3-3">
        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 <bcp14>MUST</bcp14> be as in this example,
        "remarks: Geofeed ", where the token "Geofeed " <bcp14>MUST</bcp14> be
        case sensitive, followed by a URL that will vary, but it
        <bcp14>MUST</bcp14> refer only to a single geofeed <xref target="RFC8805" format="default" sectionFormat="of" derivedContent="RFC8805"/> file.
      </t>
      <sourcecode type="rpsl" markers="false" pn="section-3-4">
    inetnum: 192.0.2.0/24 # example
    remarks: Geofeed https://example.com/geofeed.csv
</sourcecode>
      <t indent="0" pn="section-3-5">
        While we leave global agreement of RPSL modification to the relevant
        parties, we specify that a proper geofeed: attribute in the inetnum:
        class <bcp14>MUST</bcp14> be "geofeed:" and <bcp14>MUST</bcp14> be
        followed by a single URL that will vary, but it <bcp14>MUST</bcp14>
        refer only to a single geofeed <xref target="RFC8805" format="default" sectionFormat="of" derivedContent="RFC8805"/> file.
      </t>
      <sourcecode type="rpsl" markers="false" pn="section-3-6">
    inetnum: 192.0.2.0/24 # example
    geofeed: https://example.com/geofeed.csv
</sourcecode>
      <t indent="0" pn="section-3-7">
        Registries <bcp14>MAY</bcp14>, for the interim, provide a mix of the remarks:
        attribute form and the geofeed: attribute form.
      </t>
      <t indent="0" pn="section-3-8">
	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 <xref target="RFC6481" format="default" sectionFormat="of" derivedContent="RFC6481"/>) can
	be used to authenticate IP space assignment; see optional
	authentication in <xref target="auth" format="default" sectionFormat="of" derivedContent="Section 4"/>.
      </t>
      <t indent="0" pn="section-3-9">
        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 <bcp14>MUST</bcp14> 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.   
      </t>
      <t indent="0" pn="section-3-10">
        Any particular inetnum: object <bcp14>MUST</bcp14> 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.
      </t>
      <t indent="0" pn="section-3-11">
        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 <xref target="auth" format="default" sectionFormat="of" derivedContent="Section 4"/>.
      </t>
      <t indent="0" pn="section-3-12">
        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 <bcp14>SHOULD</bcp14> be preferred.
      </t>
      <t indent="0" pn="section-3-13">
        As inetnum: objects form a hierarchy, geofeed references <bcp14>SHOULD</bcp14>
        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 <bcp14>MUST</bcp14> be used.
      </t>
      <t indent="0" pn="section-3-14">
        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.
      </t>
      <t indent="0" pn="section-3-15">
        Currently, the registry data published by ARIN are not the same RPSL as
        that of the other registries (see <xref target="RFC7485" format="default" sectionFormat="of" derivedContent="RFC7485"/> for a survey of the WHOIS Tower of Babel);
        therefore, when fetching from ARIN via FTP <xref target="RFC0959" format="default" sectionFormat="of" derivedContent="RFC0959"/>, WHOIS <xref target="RFC3912" format="default" sectionFormat="of" derivedContent="RFC3912"/>,
        the Registration Data Access Protocol (RDAP) <xref target="RFC9082" format="default" sectionFormat="of" derivedContent="RFC9082"/>, etc., the "NetRange" attribute/key
        <bcp14>MUST</bcp14> be treated as "inetnum", and the "Comment"
        attribute <bcp14>MUST</bcp14> be treated as "remarks".
      </t>
    </section>
    <section anchor="auth" numbered="true" toc="include" removeInRFC="false" pn="section-4">
      <name slugifiedName="name-authenticating-geofeed-data">Authenticating Geofeed Data</name>
      <t indent="0" pn="section-4-1">
        The question arises whether a particular geofeed <xref target="RFC8805" format="default" sectionFormat="of" derivedContent="RFC8805"/> 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 <xref target="RFC8805" format="default" sectionFormat="of" derivedContent="RFC8805"/> file provides some assurance.
        Unfortunately, the RPSL in many repositories is weakly authenticated
        at best.  An approach where RPSL was signed per <xref target="RFC7909" format="default" sectionFormat="of" derivedContent="RFC7909"/> would be good, except it would have to be deployed
        by all RPSL registries, and there is a fair number of them.
      </t>
      <t indent="0" pn="section-4-2">
        A single optional authenticator <bcp14>MAY</bcp14> be appended to a
        geofeed <xref target="RFC8805" format="default" sectionFormat="of" derivedContent="RFC8805"/> 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.
      </t>
      <t indent="0" pn="section-4-3">
        The canonicalization procedure converts the data from their internal
        character representation to the UTF-8 <xref target="RFC3629" format="default" sectionFormat="of" derivedContent="RFC3629"/> character encoding, and the &lt;CRLF&gt; sequence
        <bcp14>MUST</bcp14> be used to denote the end of a line of text.  A
        blank line is represented solely by the &lt;CRLF&gt; sequence.  For
        robustness, any non-printable characters <bcp14>MUST NOT</bcp14> be
        changed by canonicalization.  Trailing blank lines <bcp14>MUST NOT</bcp14> appear at the end of the file.  That is, the file must not
        end with multiple consecutive &lt;CRLF&gt; 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 <bcp14>MUST NOT</bcp14> be processed by the digital signature algorithm.
      </t>
      <t indent="0" pn="section-4-4">
        Should the authenticator be syntactically incorrect per the
        above, the authenticator is invalid.
      </t>
      <t indent="0" pn="section-4-5">
        Borrowing detached signatures from <xref target="RFC5485" format="default" sectionFormat="of" derivedContent="RFC5485"/>, after file canonicalization, the Cryptographic
        Message Syntax (CMS) <xref target="RFC5652" format="default" sectionFormat="of" derivedContent="RFC5652"/> would
        be used to create a detached DER-encoded signature that is then padded
        BASE64 encoded (as per <xref target="RFC4648" sectionFormat="of" section="4" format="default" derivedLink="https://rfc-editor.org/rfc/rfc4648#section-4" derivedContent="RFC4648"/>) and line wrapped to 72 or fewer
        characters.  The same digest algorithm <bcp14>MUST</bcp14> 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 <xref target="RFC8933" format="default" sectionFormat="of" derivedContent="RFC8933"/>.  The
        message digest algorithm identifier <bcp14>MUST</bcp14> appear in both
        the SignedData DigestAlgorithmIdentifiers and the SignerInfo
        DigestAlgorithmIdentifier <xref target="RFC5652" format="default" sectionFormat="of" derivedContent="RFC5652"/>.
      </t>
      <t indent="0" pn="section-4-6">
        The address range of the signing certificate <bcp14>MUST</bcp14> cover all
        prefixes in the geofeed file it signs.
      </t>
      <t indent="0" pn="section-4-7">
        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) <xref target="RFC4632" format="default" sectionFormat="of" derivedContent="RFC4632"/> prefix
        boundaries, while those of the CSV lines in a geofeed file do.
      </t>
      <t indent="0" pn="section-4-8">
        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 <xref target="RFC5652" format="default" sectionFormat="of" derivedContent="RFC5652"/> CMS
        SignedData certificates field.
      </t>
      <t indent="0" pn="section-4-9">
        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:</t>
      <ol spacing="normal" type="1" indent="adaptive" start="1" pn="section-4-10"><li pn="section-4-10.1" derivedCounter="1.">
          <t indent="0" pn="section-4-10.1.1"> Obtaining the signer's certificate from the CMS SignedData
    CertificateSet <xref target="RFC5652" format="default" sectionFormat="of" derivedContent="RFC5652"/>.  The certificate
    SubjectKeyIdentifier extension <xref target="RFC5280" format="default" sectionFormat="of" derivedContent="RFC5280"/>
            <bcp14>MUST</bcp14> match the SubjectKeyIdentifier in the CMS SignerInfo
    SignerIdentifier <xref target="RFC5652" format="default" sectionFormat="of" derivedContent="RFC5652"/>.  If the key
    identifiers do not match, then validation <bcp14>MUST</bcp14> fail.</t>
          <t indent="0" pn="section-4-10.1.2">
          Validation of the signer's certificate <bcp14>MUST</bcp14> ensure
          that it is part of the current <xref target="RFC6486" format="default" sectionFormat="of" derivedContent="RFC6486"/> manifest and that the resources are covered by
          the RPKI certificate.
</t>
        </li>
        <li pn="section-4-10.2" derivedCounter="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 <bcp14>MUST</bcp14>
          be valid according to the validation algorithm in <xref target="RFC5280" format="default" sectionFormat="of" derivedContent="RFC5280"/> and the additional checks specified in
          <xref target="RFC3779" format="default" sectionFormat="of" derivedContent="RFC3779"/> associated with the IP Address
          Delegation certificate extension and the Autonomous System
          Identifier Delegation certificate extension.  If certification
          path validation is unsuccessful, then validation <bcp14>MUST</bcp14> fail.
        </li>
        <li pn="section-4-10.3" derivedCounter="3.">
          Validating the CMS SignedData as specified in <xref target="RFC5652" format="default" sectionFormat="of" derivedContent="RFC5652"/> using the public key from the validated
          signer's certificate.  If the signature validation is
          unsuccessful, then validation <bcp14>MUST</bcp14> fail.
        </li>
        <li pn="section-4-10.4" derivedCounter="4.">
          Verifying that the IP Address Delegation certificate extension
          <xref target="RFC3779" format="default" sectionFormat="of" derivedContent="RFC3779"/> covers all of the address ranges of
          the geofeed file.  If all of the address ranges are not
          covered, then validation <bcp14>MUST</bcp14> fail.
        </li>
      </ol>
      <t indent="0" pn="section-4-11">
        All of these steps <bcp14>MUST</bcp14> be successful to consider the geofeed
        file signature as valid.
      </t>
      <t indent="0" pn="section-4-12">
        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 <xref target="RFC5652" format="default" sectionFormat="of" derivedContent="RFC5652"/>.
      </t>
      <t indent="0" pn="section-4-13">
        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.
      </t>
      <t indent="0" pn="section-4-14">
        The appendix <bcp14>MUST</bcp14> 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 <xref target="example" format="default" sectionFormat="of" derivedContent="Appendix A"/>.
      </t>
      <sourcecode type="" markers="false" pn="section-4-15">
    # 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
</sourcecode>
      <t indent="0" pn="section-4-16">
        The signature does not cover the signature lines.
      </t>
      <t indent="0" pn="section-4-17">
        The bracketing "# RPKI Signature:" and "# End Signature:" <bcp14>MUST</bcp14>
        be present following the model as shown.  Their IP address range
        <bcp14>MUST</bcp14> match that of the inetnum: URL followed to the file.
      </t>
      <t indent="0" pn="section-4-18">
        <xref target="I-D.ietf-sidrops-rpki-rsc" format="default" sectionFormat="of" derivedContent="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.
      </t>
      <t indent="0" pn="section-4-19">
        <xref target="I-D.ietf-sidrops-rpki-rta" format="default" sectionFormat="of" derivedContent="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.
      </t>
    </section>
    <section anchor="ops" numbered="true" toc="include" removeInRFC="false" pn="section-5">
      <name slugifiedName="name-operational-considerations">Operational Considerations</name>
      <t indent="0" pn="section-5-1">
        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.
      </t>
      <t indent="0" pn="section-5-2">
        The geofeed files <bcp14>MUST</bcp14> be published via and fetched using
        HTTPS <xref target="RFC2818" format="default" sectionFormat="of" derivedContent="RFC2818"/>.
      </t>
      <t indent="0" pn="section-5-3">
        When using data from a geofeed file, one <bcp14>MUST</bcp14> ignore data
        outside the referring inetnum: object's inetnum: attribute
        address range.
      </t>
      <t indent="0" pn="section-5-4">
        If and only if the geofeed file is not signed per <xref target="auth" format="default" sectionFormat="of" derivedContent="Section 4"/>, then multiple inetnum: objects <bcp14>MAY</bcp14>
        refer to the same geofeed file, and the consumer <bcp14>MUST</bcp14>
        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.
      </t>
      <t indent="0" pn="section-5-5">
        If the geofeed file is signed, and the signer's certificate
        changes, the signature in the geofeed file <bcp14>MUST</bcp14> be updated.
      </t>
      <t indent="0" pn="section-5-6">
        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 <xref target="example" format="default" sectionFormat="of" derivedContent="Appendix A"/>.
      </t>
      <t indent="0" pn="section-5-7">
        To minimize the load on RIR WHOIS <xref target="RFC3912" format="default" sectionFormat="of" derivedContent="RFC3912"/> services, use of the RIR's FTP <xref target="RFC0959" format="default" sectionFormat="of" derivedContent="RFC0959"/> services <bcp14>SHOULD</bcp14> 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.
      </t>
      <t indent="0" pn="section-5-8">
        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 <xref target="GEOFEED-FINDER" format="default" sectionFormat="of" derivedContent="GEOFEED-FINDER"/>.
      </t>
      <t indent="0" pn="section-5-9">
        To prevent undue load on RPSL and geofeed servers, entity-fetching
        geofeed data using these mechanisms <bcp14>MUST NOT</bcp14> do
        frequent real-time lookups.  <xref target="RFC8805" sectionFormat="of" section="3.4" format="default" derivedLink="https://rfc-editor.org/rfc/rfc8805#section-3.4" derivedContent="RFC8805"/> suggests use of the HTTP Expires
        header <xref target="RFC7234" format="default" sectionFormat="of" derivedContent="RFC7234"/> to signal when
        geofeed data should be refetched. As the data change very
        infrequently, in the absence of such an HTTP Header signal, collectors
        <bcp14>SHOULD NOT</bcp14> 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.
      </t>
    </section>
    <section anchor="privacy" numbered="true" toc="include" removeInRFC="false" pn="section-6">
      <name slugifiedName="name-privacy-considerations">Privacy Considerations</name>
      <t indent="0" pn="section-6-1">
        <xref target="RFC8805" format="default" sectionFormat="of" derivedContent="RFC8805"/> geofeed data may reveal the
        approximate location of an IP address, which might in turn reveal the
        approximate location of an individual user.  Unfortunately, <xref target="RFC8805" format="default" sectionFormat="of" derivedContent="RFC8805"/> 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 <xref target="RFC8805" sectionFormat="of" section="4" format="default" derivedLink="https://rfc-editor.org/rfc/rfc8805#section-4" derivedContent="RFC8805"/>
        apply to this document.
      </t>
      <t indent="0" pn="section-6-2">
        Where <xref target="RFC8805" format="default" sectionFormat="of" derivedContent="RFC8805"/> provided the ability
        to publish location data, this document makes bulk access to those data
        readily available.  This is a goal, not an accident.
      </t>
    </section>
    <section anchor="seccons" numbered="true" toc="include" removeInRFC="false" pn="section-7">
      <name slugifiedName="name-security-considerations">Security Considerations</name>
      <t indent="0" pn="section-7-1">
        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 <xref target="RFC8805" format="default" sectionFormat="of" derivedContent="RFC8805"/> apply here as well.
      </t>
      <t indent="0" pn="section-7-2">
        As mentioned in <xref target="auth" format="default" sectionFormat="of" derivedContent="Section 4"/>, many RPSL
        repositories have weak, if any, authentication.  This allows spoofing
        of inetnum: objects pointing to malicious geofeed files.  <xref target="auth" format="default" sectionFormat="of" derivedContent="Section 4"/> suggests an unfortunately complex
        method for stronger authentication based on the RPKI.
      </t>
      <t indent="0" pn="section-7-3">
        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 <bcp14>MUST</bcp14> be used.
      </t>
      <t indent="0" pn="section-7-4">
        If signatures were mandatory, the above attack would be stymied, but
        of course that is not happening anytime soon.
      </t>
      <t indent="0" pn="section-7-5">
        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.
      </t>
    </section>
    <section anchor="iana" numbered="true" toc="include" removeInRFC="false" pn="section-8">
      <name slugifiedName="name-iana-considerations">IANA Considerations</name>
      <t indent="0" pn="section-8-1">
        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:
      </t>
      <table anchor="iana_table" align="center" pn="table-1">
        <thead>
          <tr>
            <th align="left" colspan="1" rowspan="1">Decimal</th>
            <th align="left" colspan="1" rowspan="1">Description</th>
            <th align="left" colspan="1" rowspan="1">References</th>
          </tr>
        </thead>
        <tbody>
          <tr>
            <td align="left" colspan="1" rowspan="1">47</td>
            <td align="left" colspan="1" rowspan="1">id-ct-geofeedCSVwithCRLF</td>
            <td align="left" colspan="1" rowspan="1">RFC 9092</td>
          </tr>
        </tbody>
      </table>
    </section>
  </middle>
  <back>
    <displayreference target="I-D.ietf-sidrops-rpki-rsc" to="RPKI-RSC"/>
    <displayreference target="I-D.ietf-sidrops-rpki-rta" to="RPKI-RTA"/>
    <references pn="section-9">
      <name slugifiedName="name-references">References</name>
      <references pn="section-9.1">
        <name slugifiedName="name-normative-references">Normative References</name>
        <reference anchor="RFC2119" target="https://www.rfc-editor.org/info/rfc2119" quoteTitle="true" derivedAnchor="RFC2119">
          <front>
            <title>Key words for use in RFCs to Indicate Requirement Levels</title>
            <author initials="S." surname="Bradner" fullname="S. Bradner">
              <organization showOnFrontPage="true"/>
            </author>
            <date year="1997" month="March"/>
            <abstract>
              <t indent="0">In many standards track documents several words are used to signify the requirements in the specification.  These words are often capitalized. This document defines these words as they should be interpreted in IETF documents.  This document specifies an Internet Best Current Practices for the Internet Community, and requests discussion and suggestions for improvements.</t>
            </abstract>
          </front>
          <seriesInfo name="BCP" value="14"/>
          <seriesInfo name="RFC" value="2119"/>
          <seriesInfo name="DOI" value="10.17487/RFC2119"/>
        </reference>
        <reference anchor="RFC2622" target="https://www.rfc-editor.org/info/rfc2622" quoteTitle="true" derivedAnchor="RFC2622">
          <front>
            <title>Routing Policy Specification Language (RPSL)</title>
            <author initials="C." surname="Alaettinoglu" fullname="C. Alaettinoglu">
              <organization showOnFrontPage="true"/>
            </author>
            <author initials="C." surname="Villamizar" fullname="C. Villamizar">
              <organization showOnFrontPage="true"/>
            </author>
            <author initials="E." surname="Gerich" fullname="E. Gerich">
              <organization showOnFrontPage="true"/>
            </author>
            <author initials="D." surname="Kessens" fullname="D. Kessens">
              <organization showOnFrontPage="true"/>
            </author>
            <author initials="D." surname="Meyer" fullname="D. Meyer">
              <organization showOnFrontPage="true"/>
            </author>
            <author initials="T." surname="Bates" fullname="T. Bates">
              <organization showOnFrontPage="true"/>
            </author>
            <author initials="D." surname="Karrenberg" fullname="D. Karrenberg">
              <organization showOnFrontPage="true"/>
            </author>
            <author initials="M." surname="Terpstra" fullname="M. Terpstra">
              <organization showOnFrontPage="true"/>
            </author>
            <date year="1999" month="June"/>
            <abstract>
              <t indent="0">RPSL allows a network operator to be able to specify routing policies at various levels in the Internet hierarchy; for example at the Autonomous System (AS) level.  At the same time, policies can be specified with sufficient detail in RPSL so that low level router configurations can be generated from them.  RPSL is extensible; new routing protocols and new protocol features can be introduced at any time.  [STANDARDS-TRACK]</t>
            </abstract>
          </front>
          <seriesInfo name="RFC" value="2622"/>
          <seriesInfo name="DOI" value="10.17487/RFC2622"/>
        </reference>
        <reference anchor="RFC2725" target="https://www.rfc-editor.org/info/rfc2725" quoteTitle="true" derivedAnchor="RFC2725">
          <front>
            <title>Routing Policy System Security</title>
            <author initials="C." surname="Villamizar" fullname="C. Villamizar">
              <organization showOnFrontPage="true"/>
            </author>
            <author initials="C." surname="Alaettinoglu" fullname="C. Alaettinoglu">
              <organization showOnFrontPage="true"/>
            </author>
            <author initials="D." surname="Meyer" fullname="D. Meyer">
              <organization showOnFrontPage="true"/>
            </author>
            <author initials="S." surname="Murphy" fullname="S. Murphy">
              <organization showOnFrontPage="true"/>
            </author>
            <date year="1999" month="December"/>
            <abstract>
              <t indent="0">The implementation and deployment of a routing policy system must maintain some degree of integrity to be of any operational use.  This document addresses the need to assure integrity of the data by providing an authentication and authorization model.  [STANDARDS-TRACK]</t>
            </abstract>
          </front>
          <seriesInfo name="RFC" value="2725"/>
          <seriesInfo name="DOI" value="10.17487/RFC2725"/>
        </reference>
        <reference anchor="RFC2818" target="https://www.rfc-editor.org/info/rfc2818" quoteTitle="true" derivedAnchor="RFC2818">
          <front>
            <title>HTTP Over TLS</title>
            <author initials="E." surname="Rescorla" fullname="E. Rescorla">
              <organization showOnFrontPage="true"/>
            </author>
            <date year="2000" month="May"/>
            <abstract>
              <t indent="0">This memo describes how to use Transport Layer Security (TLS) to secure Hypertext Transfer Protocol (HTTP) connections over the Internet.  This memo provides information for the Internet community.</t>
            </abstract>
          </front>
          <seriesInfo name="RFC" value="2818"/>
          <seriesInfo name="DOI" value="10.17487/RFC2818"/>
        </reference>
        <reference anchor="RFC3629" target="https://www.rfc-editor.org/info/rfc3629" quoteTitle="true" derivedAnchor="RFC3629">
          <front>
            <title>UTF-8, a transformation format of ISO 10646</title>
            <author initials="F." surname="Yergeau" fullname="F. Yergeau">
              <organization showOnFrontPage="true"/>
            </author>
            <date year="2003" month="November"/>
            <abstract>
              <t indent="0">ISO/IEC 10646-1 defines a large character set called the Universal Character Set (UCS) which encompasses most of the world's writing systems.  The originally proposed encodings of the UCS, however, were not compatible with many current applications and protocols, and this has led to the development of UTF-8, the object of this memo.  UTF-8 has the characteristic of preserving the full US-ASCII range, providing compatibility with file systems, parsers and other software that rely on US-ASCII values but are transparent to other values.  This memo obsoletes and replaces RFC 2279.</t>
            </abstract>
          </front>
          <seriesInfo name="STD" value="63"/>
          <seriesInfo name="RFC" value="3629"/>
          <seriesInfo name="DOI" value="10.17487/RFC3629"/>
        </reference>
        <reference anchor="RFC3779" target="https://www.rfc-editor.org/info/rfc3779" quoteTitle="true" derivedAnchor="RFC3779">
          <front>
            <title>X.509 Extensions for IP Addresses and AS Identifiers</title>
            <author initials="C." surname="Lynn" fullname="C. Lynn">
              <organization showOnFrontPage="true"/>
            </author>
            <author initials="S." surname="Kent" fullname="S. Kent">
              <organization showOnFrontPage="true"/>
            </author>
            <author initials="K." surname="Seo" fullname="K. Seo">
              <organization showOnFrontPage="true"/>
            </author>
            <date year="2004" month="June"/>
            <abstract>
              <t indent="0">This document defines two X.509 v3 certificate extensions.  The first binds a list of IP address blocks, or prefixes, to the subject of a certificate.  The second binds a list of autonomous system identifiers to the subject of a certificate.  These extensions may be used to convey the authorization of the subject to use the IP addresses and autonomous system identifiers contained in the extensions.  [STANDARDS-TRACK]</t>
            </abstract>
          </front>
          <seriesInfo name="RFC" value="3779"/>
          <seriesInfo name="DOI" value="10.17487/RFC3779"/>
        </reference>
        <reference anchor="RFC4012" target="https://www.rfc-editor.org/info/rfc4012" quoteTitle="true" derivedAnchor="RFC4012">
          <front>
            <title>Routing Policy Specification Language next generation (RPSLng)</title>
            <author initials="L." surname="Blunk" fullname="L. Blunk">
              <organization showOnFrontPage="true"/>
            </author>
            <author initials="J." surname="Damas" fullname="J. Damas">
              <organization showOnFrontPage="true"/>
            </author>
            <author initials="F." surname="Parent" fullname="F. Parent">
              <organization showOnFrontPage="true"/>
            </author>
            <author initials="A." surname="Robachevsky" fullname="A. Robachevsky">
              <organization showOnFrontPage="true"/>
            </author>
            <date year="2005" month="March"/>
            <abstract>
              <t indent="0">This memo introduces a new set of simple extensions to the Routing Policy Specification Language (RPSL), enabling the language to document routing policies for the IPv6 and multicast address families currently used in the Internet.  [STANDARDS-TRACK]</t>
            </abstract>
          </front>
          <seriesInfo name="RFC" value="4012"/>
          <seriesInfo name="DOI" value="10.17487/RFC4012"/>
        </reference>
        <reference anchor="RFC4648" target="https://www.rfc-editor.org/info/rfc4648" quoteTitle="true" derivedAnchor="RFC4648">
          <front>
            <title>The Base16, Base32, and Base64 Data Encodings</title>
            <author initials="S." surname="Josefsson" fullname="S. Josefsson">
              <organization showOnFrontPage="true"/>
            </author>
            <date year="2006" month="October"/>
            <abstract>
              <t indent="0">This document describes the commonly used base 64, base 32, and base 16 encoding schemes.  It also discusses the use of line-feeds in encoded data, use of padding in encoded data, use of non-alphabet characters in encoded data, use of different encoding alphabets, and canonical encodings.  [STANDARDS-TRACK]</t>
            </abstract>
          </front>
          <seriesInfo name="RFC" value="4648"/>
          <seriesInfo name="DOI" value="10.17487/RFC4648"/>
        </reference>
        <reference anchor="RFC5280" target="https://www.rfc-editor.org/info/rfc5280" quoteTitle="true" derivedAnchor="RFC5280">
          <front>
            <title>Internet X.509 Public Key Infrastructure Certificate and Certificate Revocation List (CRL) Profile</title>
            <author initials="D." surname="Cooper" fullname="D. Cooper">
              <organization showOnFrontPage="true"/>
            </author>
            <author initials="S." surname="Santesson" fullname="S. Santesson">
              <organization showOnFrontPage="true"/>
            </author>
            <author initials="S." surname="Farrell" fullname="S. Farrell">
              <organization showOnFrontPage="true"/>
            </author>
            <author initials="S." surname="Boeyen" fullname="S. Boeyen">
              <organization showOnFrontPage="true"/>
            </author>
            <author initials="R." surname="Housley" fullname="R. Housley">
              <organization showOnFrontPage="true"/>
            </author>
            <author initials="W." surname="Polk" fullname="W. Polk">
              <organization showOnFrontPage="true"/>
            </author>
            <date year="2008" month="May"/>
            <abstract>
              <t indent="0">This memo profiles the X.509 v3 certificate and X.509 v2 certificate revocation list (CRL) for use in the Internet.  An overview of this approach and model is provided as an introduction.  The X.509 v3 certificate format is described in detail, with additional information regarding the format and semantics of Internet name forms.  Standard certificate extensions are described and two Internet-specific extensions are defined.  A set of required certificate extensions is specified.  The X.509 v2 CRL format is described in detail along with standard and Internet-specific extensions.  An algorithm for X.509 certification path validation is described.  An ASN.1 module and examples are provided in the appendices.  [STANDARDS-TRACK]</t>
            </abstract>
          </front>
          <seriesInfo name="RFC" value="5280"/>
          <seriesInfo name="DOI" value="10.17487/RFC5280"/>
        </reference>
        <reference anchor="RFC5652" target="https://www.rfc-editor.org/info/rfc5652" quoteTitle="true" derivedAnchor="RFC5652">
          <front>
            <title>Cryptographic Message Syntax (CMS)</title>
            <author initials="R." surname="Housley" fullname="R. Housley">
              <organization showOnFrontPage="true"/>
            </author>
            <date year="2009" month="September"/>
            <abstract>
              <t indent="0">This document describes the Cryptographic Message Syntax (CMS).  This syntax is used to digitally sign, digest, authenticate, or encrypt arbitrary message content.  [STANDARDS-TRACK]</t>
            </abstract>
          </front>
          <seriesInfo name="STD" value="70"/>
          <seriesInfo name="RFC" value="5652"/>
          <seriesInfo name="DOI" value="10.17487/RFC5652"/>
        </reference>
        <reference anchor="RFC6481" target="https://www.rfc-editor.org/info/rfc6481" quoteTitle="true" derivedAnchor="RFC6481">
          <front>
            <title>A Profile for Resource Certificate Repository Structure</title>
            <author initials="G." surname="Huston" fullname="G. Huston">
              <organization showOnFrontPage="true"/>
            </author>
            <author initials="R." surname="Loomans" fullname="R. Loomans">
              <organization showOnFrontPage="true"/>
            </author>
            <author initials="G." surname="Michaelson" fullname="G. Michaelson">
              <organization showOnFrontPage="true"/>
            </author>
            <date year="2012" month="February"/>
            <abstract>
              <t indent="0">This document defines a profile for the structure of the Resource Public Key Infrastructure (RPKI) distributed repository.  Each individual repository publication point is a directory that contains files that correspond to X.509/PKIX Resource Certificates, Certificate Revocation Lists and signed objects.  This profile defines the object (file) naming scheme, the contents of repository publication points (directories), and a suggested internal structure of a local repository cache that is intended to facilitate synchronization across a distributed collection of repository publication points and to facilitate certification path construction.  [STANDARDS-TRACK]</t>
            </abstract>
          </front>
          <seriesInfo name="RFC" value="6481"/>
          <seriesInfo name="DOI" value="10.17487/RFC6481"/>
        </reference>
        <reference anchor="RFC6486" target="https://www.rfc-editor.org/info/rfc6486" quoteTitle="true" derivedAnchor="RFC6486">
          <front>
            <title>Manifests for the Resource Public Key Infrastructure (RPKI)</title>
            <author initials="R." surname="Austein" fullname="R. Austein">
              <organization showOnFrontPage="true"/>
            </author>
            <author initials="G." surname="Huston" fullname="G. Huston">
              <organization showOnFrontPage="true"/>
            </author>
            <author initials="S." surname="Kent" fullname="S. Kent">
              <organization showOnFrontPage="true"/>
            </author>
            <author initials="M." surname="Lepinski" fullname="M. Lepinski">
              <organization showOnFrontPage="true"/>
            </author>
            <date year="2012" month="February"/>
            <abstract>
              <t indent="0">This document defines a "manifest" for use in the Resource Public Key Infrastructure (RPKI).  A manifest is a signed object (file) that contains a listing of all the signed objects (files) in the repository publication point (directory) associated with an authority responsible for publishing in the repository.  For each certificate, Certificate Revocation List (CRL), or other type of signed objects issued by the authority that are published at this repository publication point, the manifest contains both the name of the file containing the object and a hash of the file content.  Manifests are intended to enable a relying party (RP) to detect certain forms of attacks against a repository.  Specifically, if an RP checks a manifest's contents against the signed objects retrieved from a repository publication point, then the RP can detect "stale" (valid) data and deletion of signed objects.  [STANDARDS-TRACK]</t>
            </abstract>
          </front>
          <seriesInfo name="RFC" value="6486"/>
          <seriesInfo name="DOI" value="10.17487/RFC6486"/>
        </reference>
        <reference anchor="RFC8174" target="https://www.rfc-editor.org/info/rfc8174" quoteTitle="true" derivedAnchor="RFC8174">
          <front>
            <title>Ambiguity of Uppercase vs Lowercase in RFC 2119 Key Words</title>
            <author initials="B." surname="Leiba" fullname="B. Leiba">
              <organization showOnFrontPage="true"/>
            </author>
            <date year="2017" month="May"/>
            <abstract>
              <t indent="0">RFC 2119 specifies common key words that may be used in protocol  specifications.  This document aims to reduce the ambiguity by clarifying that only UPPERCASE usage of the key words have the  defined special meanings.</t>
            </abstract>
          </front>
          <seriesInfo name="BCP" value="14"/>
          <seriesInfo name="RFC" value="8174"/>
          <seriesInfo name="DOI" value="10.17487/RFC8174"/>
        </reference>
        <reference anchor="RFC8805" target="https://www.rfc-editor.org/info/rfc8805" quoteTitle="true" derivedAnchor="RFC8805">
          <front>
            <title>A Format for Self-Published IP Geolocation Feeds</title>
            <author initials="E." surname="Kline" fullname="E. Kline">
              <organization showOnFrontPage="true"/>
            </author>
            <author initials="K." surname="Duleba" fullname="K. Duleba">
              <organization showOnFrontPage="true"/>
            </author>
            <author initials="Z." surname="Szamonek" fullname="Z. Szamonek">
              <organization showOnFrontPage="true"/>
            </author>
            <author initials="S." surname="Moser" fullname="S. Moser">
              <organization showOnFrontPage="true"/>
            </author>
            <author initials="W." surname="Kumari" fullname="W. Kumari">
              <organization showOnFrontPage="true"/>
            </author>
            <date year="2020" month="August"/>
            <abstract>
              <t indent="0">This document records a format whereby a network operator can publish a mapping of IP address prefixes to simplified geolocation information, colloquially termed a "geolocation feed".  Interested parties can poll and parse these feeds to update or merge with other geolocation data sources and procedures.  This format intentionally only allows specifying coarse-level location.</t>
              <t indent="0">Some technical organizations operating networks that move from one conference location to the next have already experimentally published small geolocation feeds.</t>
              <t indent="0">This document describes a currently deployed format. At least one consumer (Google) has incorporated these feeds into a geolocation data pipeline, and a significant number of ISPs are using it to inform them where their prefixes should be geolocated.</t>
            </abstract>
          </front>
          <seriesInfo name="RFC" value="8805"/>
          <seriesInfo name="DOI" value="10.17487/RFC8805"/>
        </reference>
        <reference anchor="RFC8933" target="https://www.rfc-editor.org/info/rfc8933" quoteTitle="true" derivedAnchor="RFC8933">
          <front>
            <title>Update to the Cryptographic Message Syntax (CMS) for Algorithm Identifier Protection</title>
            <author initials="R." surname="Housley" fullname="R. Housley">
              <organization showOnFrontPage="true"/>
            </author>
            <date year="2020" month="October"/>
            <abstract>
              <t indent="0">This document updates the Cryptographic Message Syntax (CMS) specified in RFC 5652 to ensure that algorithm identifiers in signed-data and authenticated-data content types are adequately protected.</t>
            </abstract>
          </front>
          <seriesInfo name="RFC" value="8933"/>
          <seriesInfo name="DOI" value="10.17487/RFC8933"/>
        </reference>
      </references>
      <references pn="section-9.2">
        <name slugifiedName="name-informative-references">Informative References</name>
        <reference anchor="GEOFEED-FINDER" target="https://github.com/massimocandela/geofeed-finder" quoteTitle="true" derivedAnchor="GEOFEED-FINDER">
          <front>
            <title>geofeed-finder</title>
            <author>
              <organization showOnFrontPage="true"/>
            </author>
            <date month="June" year="2021"/>
          </front>
          <refcontent>commit 5f557a4</refcontent>
        </reference>
        <reference anchor="INET6NUM" target="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" quoteTitle="true" derivedAnchor="INET6NUM">
          <front>
            <title>Description of the INET6NUM Object</title>
            <author>
              <organization showOnFrontPage="true">RIPE NCC</organization>
            </author>
            <date month="October" year="2019"/>
          </front>
        </reference>
        <reference anchor="INETNUM" target="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" quoteTitle="true" derivedAnchor="INETNUM">
          <front>
            <title>Description of the INETNUM Object</title>
            <author>
              <organization showOnFrontPage="true">RIPE NCC</organization>
            </author>
            <date month="June" year="2020"/>
          </front>
        </reference>
        <reference anchor="RFC0959" target="https://www.rfc-editor.org/info/rfc959" quoteTitle="true" derivedAnchor="RFC0959">
          <front>
            <title>File Transfer Protocol</title>
            <author initials="J." surname="Postel" fullname="J. Postel">
              <organization showOnFrontPage="true"/>
            </author>
            <author initials="J." surname="Reynolds" fullname="J. Reynolds">
              <organization showOnFrontPage="true"/>
            </author>
            <date year="1985" month="October"/>
            <abstract>
              <t indent="0">This memo is the official specification of the File Transfer Protocol    (FTP) for the DARPA Internet community.  The primary intent is to    clarify and correct the documentation of the FTP specification, not to    change the protocol.  The following new optional commands are included    in this edition of the specification:  Change to Parent Directory    (CDUP), Structure Mount (SMNT), Store Unique (STOU), Remove Directory    (RMD), Make Directory (MKD), Print Directory (PWD), and System (SYST).    Note that this specification is compatible with the previous edition.</t>
            </abstract>
          </front>
          <seriesInfo name="STD" value="9"/>
          <seriesInfo name="RFC" value="959"/>
          <seriesInfo name="DOI" value="10.17487/RFC0959"/>
        </reference>
        <reference anchor="RFC3912" target="https://www.rfc-editor.org/info/rfc3912" quoteTitle="true" derivedAnchor="RFC3912">
          <front>
            <title>WHOIS Protocol Specification</title>
            <author initials="L." surname="Daigle" fullname="L. Daigle">
              <organization showOnFrontPage="true"/>
            </author>
            <date year="2004" month="September"/>
            <abstract>
              <t indent="0">This document updates the specification of the WHOIS protocol, thereby obsoleting RFC 954.  The update is intended to remove the material from RFC 954 that does not have to do with the on-the-wire protocol, and is no longer applicable in today's Internet.  This document does not attempt to change or update the protocol per se, or document other uses of the protocol that have come into existence since the publication of RFC 954.  [STANDARDS-TRACK]</t>
            </abstract>
          </front>
          <seriesInfo name="RFC" value="3912"/>
          <seriesInfo name="DOI" value="10.17487/RFC3912"/>
        </reference>
        <reference anchor="RFC4632" target="https://www.rfc-editor.org/info/rfc4632" quoteTitle="true" derivedAnchor="RFC4632">
          <front>
            <title>Classless Inter-domain Routing (CIDR): The Internet Address Assignment and Aggregation Plan</title>
            <author initials="V." surname="Fuller" fullname="V. Fuller">
              <organization showOnFrontPage="true"/>
            </author>
            <author initials="T." surname="Li" fullname="T. Li">
              <organization showOnFrontPage="true"/>
            </author>
            <date year="2006" month="August"/>
            <abstract>
              <t indent="0">This memo discusses the strategy for address assignment of the existing 32-bit IPv4 address space with a view toward conserving the address space and limiting the growth rate of global routing state. This document obsoletes the original Classless Inter-domain Routing (CIDR) spec in RFC 1519, with changes made both to clarify the concepts it introduced and, after more than twelve years, to update the Internet community on the results of deploying the technology described.  This document specifies an Internet Best Current Practices for the Internet Community, and requests discussion and suggestions for improvements.</t>
            </abstract>
          </front>
          <seriesInfo name="BCP" value="122"/>
          <seriesInfo name="RFC" value="4632"/>
          <seriesInfo name="DOI" value="10.17487/RFC4632"/>
        </reference>
        <reference anchor="RFC5485" target="https://www.rfc-editor.org/info/rfc5485" quoteTitle="true" derivedAnchor="RFC5485">
          <front>
            <title>Digital Signatures on Internet-Draft Documents</title>
            <author initials="R." surname="Housley" fullname="R. Housley">
              <organization showOnFrontPage="true"/>
            </author>
            <date year="2009" month="March"/>
            <abstract>
              <t indent="0">This document specifies the conventions for digital signatures on Internet-Drafts.  The Cryptographic Message Syntax (CMS) is used to create a detached signature, which is stored in a separate companion file so that no existing utilities are impacted by the addition of the digital signature.  This memo provides information for the  Internet community.</t>
            </abstract>
          </front>
          <seriesInfo name="RFC" value="5485"/>
          <seriesInfo name="DOI" value="10.17487/RFC5485"/>
        </reference>
        <reference anchor="RFC7234" target="https://www.rfc-editor.org/info/rfc7234" quoteTitle="true" derivedAnchor="RFC7234">
          <front>
            <title>Hypertext Transfer Protocol (HTTP/1.1): Caching</title>
            <author initials="R." surname="Fielding" fullname="R. Fielding" role="editor">
              <organization showOnFrontPage="true"/>
            </author>
            <author initials="M." surname="Nottingham" fullname="M. Nottingham" role="editor">
              <organization showOnFrontPage="true"/>
            </author>
            <author initials="J." surname="Reschke" fullname="J. Reschke" role="editor">
              <organization showOnFrontPage="true"/>
            </author>
            <date year="2014" month="June"/>
            <abstract>
              <t indent="0">The Hypertext Transfer Protocol (HTTP) is a stateless \%application- level protocol for distributed, collaborative, hypertext information systems.  This document defines HTTP caches and the associated header fields that control cache behavior or indicate cacheable response messages.</t>
            </abstract>
          </front>
          <seriesInfo name="RFC" value="7234"/>
          <seriesInfo name="DOI" value="10.17487/RFC7234"/>
        </reference>
        <reference anchor="RFC7485" target="https://www.rfc-editor.org/info/rfc7485" quoteTitle="true" derivedAnchor="RFC7485">
          <front>
            <title>Inventory and Analysis of WHOIS Registration Objects</title>
            <author initials="L." surname="Zhou" fullname="L. Zhou">
              <organization showOnFrontPage="true"/>
            </author>
            <author initials="N." surname="Kong" fullname="N. Kong">
              <organization showOnFrontPage="true"/>
            </author>
            <author initials="S." surname="Shen" fullname="S. Shen">
              <organization showOnFrontPage="true"/>
            </author>
            <author initials="S." surname="Sheng" fullname="S. Sheng">
              <organization showOnFrontPage="true"/>
            </author>
            <author initials="A." surname="Servin" fullname="A. Servin">
              <organization showOnFrontPage="true"/>
            </author>
            <date year="2015" month="March"/>
            <abstract>
              <t indent="0">WHOIS output objects from registries, including both Regional Internet Registries (RIRs) and Domain Name Registries (DNRs), were collected and analyzed.  This document describes the process and results of the statistical analysis of existing WHOIS information. The purpose of this document is to build an object inventory to facilitate discussions of data objects included in Registration Data Access Protocol (RDAP) responses.</t>
            </abstract>
          </front>
          <seriesInfo name="RFC" value="7485"/>
          <seriesInfo name="DOI" value="10.17487/RFC7485"/>
        </reference>
        <reference anchor="RFC7909" target="https://www.rfc-editor.org/info/rfc7909" quoteTitle="true" derivedAnchor="RFC7909">
          <front>
            <title>Securing Routing Policy Specification Language (RPSL) Objects with Resource Public Key Infrastructure (RPKI) Signatures</title>
            <author initials="R." surname="Kisteleki" fullname="R. Kisteleki">
              <organization showOnFrontPage="true"/>
            </author>
            <author initials="B." surname="Haberman" fullname="B. Haberman">
              <organization showOnFrontPage="true"/>
            </author>
            <date year="2016" month="June"/>
            <abstract>
              <t indent="0">This document describes a method that allows parties to electronically sign Routing Policy Specification Language objects and validate such electronic signatures.  This allows relying parties to detect accidental or malicious modifications of such objects.  It also allows parties who run Internet Routing Registries or similar databases, but do not yet have authentication (based on Routing Policy System Security) of the maintainers of certain objects, to verify that the additions or modifications of such database objects are done by the legitimate holder(s) of the Internet resources mentioned in those objects.  This document updates RFCs 2622 and 4012 to add the signature attribute to supported RPSL objects.</t>
            </abstract>
          </front>
          <seriesInfo name="RFC" value="7909"/>
          <seriesInfo name="DOI" value="10.17487/RFC7909"/>
        </reference>
        <reference anchor="RFC9082" target="https://www.rfc-editor.org/info/rfc9082" quoteTitle="true" derivedAnchor="RFC9082">
          <front>
            <title>Registration Data Access Protocol (RDAP) Query Format</title>
            <author initials="S." surname="Hollenbeck" fullname="S. Hollenbeck">
              <organization showOnFrontPage="true"/>
            </author>
            <author initials="A." surname="Newton" fullname="A. Newton">
              <organization showOnFrontPage="true"/>
            </author>
            <date year="2021" month="June"/>
            <abstract>
              <t indent="0">This document describes uniform patterns to construct HTTP URLs that may be used to retrieve registration information from registries (including both Regional Internet Registries (RIRs) and Domain Name Registries (DNRs)) using "RESTful" web access patterns.  These uniform patterns define the query syntax for the Registration Data Access Protocol (RDAP). This document obsoletes RFC 7482.</t>
            </abstract>
          </front>
          <seriesInfo name="STD" value="95"/>
          <seriesInfo name="RFC" value="9082"/>
          <seriesInfo name="DOI" value="10.17487/RFC9082"/>
        </reference>
        <reference anchor="RIPE-DB" target="https://www.ripe.net/manage-ips-and-asns/db/support/documentation/ripe-database-documentation" quoteTitle="true" derivedAnchor="RIPE-DB">
          <front>
            <title>RIPE Database Documentation</title>
            <author>
              <organization showOnFrontPage="true">RIPE NCC</organization>
            </author>
            <date/>
          </front>
        </reference>
        <reference anchor="RIPE181" target="https://www.ripe.net/publications/docs/ripe-181" quoteTitle="true" derivedAnchor="RIPE181">
          <front>
            <title>Representation Of IP Routing Policies In A Routing Registry</title>
            <author>
              <organization showOnFrontPage="true">RIPE NCC</organization>
            </author>
            <date month="October" year="1994"/>
          </front>
        </reference>
        <reference anchor="RIPE81" target="https://www.ripe.net/publications/docs/ripe-081" quoteTitle="true" derivedAnchor="RIPE81">
          <front>
            <title>Representation Of IP Routing Policies In The RIPE Database</title>
            <author>
              <organization showOnFrontPage="true">RIPE NCC</organization>
            </author>
            <date month="February" year="1993"/>
          </front>
        </reference>
        <reference anchor="I-D.ietf-sidrops-rpki-rsc" quoteTitle="true" target="https://datatracker.ietf.org/doc/html/draft-ietf-sidrops-rpki-rsc-04" derivedAnchor="RPKI-RSC">
          <front>
            <title>Resource Public Key Infrastructure (RPKI) object profile for Signed Checklist (RSC)</title>
            <author fullname="Job Snijders">
              <organization showOnFrontPage="true">Fastly</organization>
            </author>
            <author fullname="Tom Harrison">
              <organization showOnFrontPage="true">Asia Pacific Network Information Centre</organization>
            </author>
            <author fullname="Ben Maddison">
              <organization showOnFrontPage="true">Workonline Communications</organization>
            </author>
            <date month="May" day="31" year="2021"/>
            <abstract>
              <t indent="0">   This document defines a Cryptographic Message Syntax (CMS) profile
   for a general purpose listing of checksums (a 'checklist'), for use
   with the Resource Public Key Infrastructure (RPKI).  The objective is
   to allow an attestation, in the form of a listing of one or more
   checksums of arbitrary digital objects (files), to be signed "with
   resources", and for validation to provide a means to confirm a
   specific Internet Resource Holder produced the Signed Checklist.  The
   profile is intended to provide for the signing of an arbitrary
   checksum listing with a specific set of Internet Number Resources.


              </t>
            </abstract>
          </front>
          <seriesInfo name="Internet-Draft" value="draft-ietf-sidrops-rpki-rsc-04"/>
          <format type="TXT" target="https://www.ietf.org/archive/id/draft-ietf-sidrops-rpki-rsc-04.txt"/>
          <refcontent>Work in Progress</refcontent>
        </reference>
        <reference anchor="I-D.ietf-sidrops-rpki-rta" quoteTitle="true" target="https://datatracker.ietf.org/doc/html/draft-ietf-sidrops-rpki-rta-00" derivedAnchor="RPKI-RTA">
          <front>
            <title>A profile for Resource Tagged Attestations (RTAs)</title>
            <author fullname="George G. Michaelson">
              <organization showOnFrontPage="true">Asia Pacific Network Information Centre</organization>
            </author>
            <author fullname="Geoff Huston">
              <organization showOnFrontPage="true">Asia Pacific Network Information Centre</organization>
            </author>
            <author fullname="Tom Harrison">
              <organization showOnFrontPage="true">Asia Pacific Network Information Centre</organization>
            </author>
            <author fullname="Tim Bruijnzeels">
              <organization showOnFrontPage="true">NLNet Labs B.V.</organization>
            </author>
            <author fullname="Martin Hoffmann">
              <organization showOnFrontPage="true">NLNet Labs B.V.</organization>
            </author>
            <date month="January" day="21" year="2021"/>
            <abstract>
              <t indent="0">   This document defines a Cryptographic Message Syntax (CMS) profile
   for a general purpose Resource Tagged Attestation (RTA), for use with
   the Resource Public Key Infrastructure (RPKI).  The objective is to
   allow an attestation, in the form of an arbitrary digital object, to
   be signed "with resources", and for validation to provide an outcome
   of "valid with resources".  The profile is intended to provide for
   the signing of an attestation with an arbitrary set of resources.

              </t>
            </abstract>
          </front>
          <seriesInfo name="Internet-Draft" value="draft-ietf-sidrops-rpki-rta-00"/>
          <format type="TXT" target="https://www.ietf.org/archive/id/draft-ietf-sidrops-rpki-rta-00.txt"/>
          <refcontent>Work in Progress</refcontent>
        </reference>
      </references>
    </references>
    <section anchor="example" numbered="true" toc="include" removeInRFC="false" pn="section-appendix.a">
      <name slugifiedName="name-example">Example</name>
      <t indent="0" pn="section-appendix.a-1">
      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.
      </t>
      <t indent="0" pn="section-appendix.a-2">
      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.
      </t>
      <sourcecode type="" markers="false" pn="section-appendix.a-3">
    -----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-----
</sourcecode>
      <t indent="0" pn="section-appendix.a-4">
   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).</t>
      <sourcecode type="" markers="false" pn="section-appendix.a-5">
    -----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-----
</sourcecode>
      <t indent="0" pn="section-appendix.a-6">
   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.</t>
      <sourcecode type="" markers="false" pn="section-appendix.a-7">
    -----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-----
</sourcecode>
      <t indent="0" pn="section-appendix.a-8">
      The end-entity certificate is displayed below in detail.  For
      brevity, the other two certificates are not.
      </t>
      <sourcecode type="" markers="false" pn="section-appendix.a-9">
    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
          :   }
</sourcecode>
      <t indent="0" pn="section-appendix.a-10">
To allow reproduction of the signature results, the end-entity
private key is provided.  For brevity, the other two private
keys are not.</t>
      <sourcecode type="" markers="false" pn="section-appendix.a-11">
 -----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-----
</sourcecode>
      <t indent="0" pn="section-appendix.a-12">
Signing of "192.0.2.0/24,US,WA,Seattle," (terminated by CR and LF) yields the
following detached CMS signature.</t>
      <sourcecode type="" markers="false" pn="section-appendix.a-13">
 # 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
</sourcecode>
    </section>
    <section anchor="ack" numbered="false" toc="include" removeInRFC="false" pn="section-appendix.b">
      <name slugifiedName="name-acknowledgments">Acknowledgments</name>
      <t indent="0" pn="section-appendix.b-1">
        Thanks to <contact fullname="Rob Austein"/> for CMS and detached
        signature clue, <contact fullname="George Michaelson"/> for the first
        and substantial external review, and <contact fullname="Erik Kline"/>
        who was too shy to agree to coauthorship.  Additionally, we express
        our gratitude to early implementors, including <contact fullname="Menno         Schepers"/>; <contact fullname="Flavio Luciani"/>; <contact fullname="Eric Dugas"/>; <contact fullname="Job Snijders"/>, who
        provided running code; and <contact fullname="Kevin Pack"/>.  Also,
        thanks to the following geolocation providers who are consuming geofeeds with this
        described solution: <contact fullname="Jonathan Kosgei"/> (ipdata.co),
        <contact fullname="Ben Dowling"/> (ipinfo.io), and <contact fullname="Pol Nisenblat"/> (bigdatacloud.com).  For an amazing number
        of helpful reviews, we thank <contact fullname="Adrian Farrel"/>,
        <contact fullname="Antonio Prado"/>, <contact fullname="Francesca         Palombini"/>, <contact fullname="Jean-Michel Combes"/> (INTDIR),
        <contact fullname="John Scudder"/>, <contact fullname="Kyle Rose"/>
        (SECDIR), <contact fullname="Martin Duke"/>, <contact fullname="Murray         Kucherawy"/>, <contact fullname="Paul Kyzivat"/> (GENART), <contact fullname="Rob Wilton"/>, and <contact fullname="Roman Danyliw"/>.  The
        authors also thank <contact fullname="George Michaelson"/>, the
        awesome document shepherd.
      </t>
    </section>
    <section anchor="authors-addresses" numbered="false" removeInRFC="false" toc="include" pn="section-appendix.c">
      <name slugifiedName="name-authors-addresses">Authors' Addresses</name>
      <author fullname="Randy Bush" initials="R." surname="Bush">
        <organization showOnFrontPage="true">IIJ &amp; Arrcus</organization>
        <address>
          <postal>
            <street>5147 Crystal Springs</street>
            <city>Bainbridge Island</city>
            <region>Washington</region>
            <code>98110</code>
            <country>United States of America</country>
          </postal>
          <email>randy@psg.com</email>
        </address>
      </author>
      <author fullname="Massimo Candela" initials="M." surname="Candela">
        <organization showOnFrontPage="true">NTT</organization>
        <address>
          <postal>
            <street>Siriusdreef 70-72</street>
            <city>Hoofddorp</city>
            <code>2132 WT</code>
            <country>Netherlands</country>
          </postal>
          <email>massimo@ntt.net</email>
        </address>
      </author>
      <author fullname="Warren Kumari" initials="W." surname="Kumari">
        <organization showOnFrontPage="true">Google</organization>
        <address>
          <postal>
            <street>1600 Amphitheatre Parkway</street>
            <city>Mountain View</city>
            <region>CA</region>
            <code>94043</code>
            <country>United States of America</country>
          </postal>
          <email>warren@kumari.net</email>
        </address>
      </author>
      <author fullname="Russ Housley" initials="R" surname="Housley">
        <organization abbrev="Vigil Security" showOnFrontPage="true">Vigil Security, LLC</organization>
        <address>
          <postal>
            <street>516 Dranesville Road</street>
            <city>Herndon</city>
            <region>VA</region>
            <code>20170</code>
            <country>United States of America</country>
          </postal>
          <email>housley@vigilsec.com</email>
        </address>
      </author>
    </section>
  </back>
</rfc>
