



Network Working Group                                           J. Gould
Internet-Draft                                            VeriSign, Inc.
Intended status: Standards Track                        January 10, 2019
Expires: July 14, 2019


  Verification Code Extension for the Extensible Provisioning Protocol
                                 (EPP)
                 draft-ietf-regext-verificationcode-06

Abstract

   This document describes an Extensible Provisioning Protocol (EPP)
   extension for including a verification code for marking the data for
   a transform command as being verified by a 3rd party, which is
   referred to as the Verification Service Provider (VSP).  The
   verification code is digitally signed by the VSP using XML Signature
   and is "base64" encoded.  The XML Signature includes the VSP signer
   certificate, so the server can verify that the verification code
   originated from the VSP.

Status of This Memo

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

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at http://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on July 14, 2019.

Copyright Notice

   Copyright (c) 2019 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect



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   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Conventions Used in This Document . . . . . . . . . . . .   3
   2.  Object Attributes . . . . . . . . . . . . . . . . . . . . . .   4
     2.1.  Verification Code . . . . . . . . . . . . . . . . . . . .   4
       2.1.1.  Signed Code . . . . . . . . . . . . . . . . . . . . .   4
       2.1.2.  Encoded Signed Code . . . . . . . . . . . . . . . . .   7
     2.2.  Verification Profile  . . . . . . . . . . . . . . . . . .  11
   3.  EPP Command Mapping . . . . . . . . . . . . . . . . . . . . .  12
     3.1.  EPP Query Commands  . . . . . . . . . . . . . . . . . . .  12
       3.1.1.  EPP <check> Command . . . . . . . . . . . . . . . . .  12
       3.1.2.  EPP <info> Command  . . . . . . . . . . . . . . . . .  12
       3.1.3.  EPP <transfer> Command  . . . . . . . . . . . . . . .  24
     3.2.  EPP Transform Commands  . . . . . . . . . . . . . . . . .  25
       3.2.1.  EPP <create> Command  . . . . . . . . . . . . . . . .  25
       3.2.2.  EPP <delete> Command  . . . . . . . . . . . . . . . .  27
       3.2.3.  EPP <renew> Command . . . . . . . . . . . . . . . . .  28
       3.2.4.  EPP <transfer> Command  . . . . . . . . . . . . . . .  28
       3.2.5.  EPP <update> Command  . . . . . . . . . . . . . . . .  28
   4.  Formal Syntax . . . . . . . . . . . . . . . . . . . . . . . .  28
     4.1.  Verification Code Extension Schema  . . . . . . . . . . .  28
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  32
     5.1.  XML Namespace . . . . . . . . . . . . . . . . . . . . . .  32
     5.2.  EPP Extension Registry  . . . . . . . . . . . . . . . . .  32
   6.  Implementation Status . . . . . . . . . . . . . . . . . . . .  33
     6.1.  Verisign EPP SDK  . . . . . . . . . . . . . . . . . . . .  33
     6.2.  Net::DRI  . . . . . . . . . . . . . . . . . . . . . . . .  34
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .  34
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  35
     8.1.  Normative References  . . . . . . . . . . . . . . . . . .  35
     8.2.  Informative References  . . . . . . . . . . . . . . . . .  36
   Appendix A.  Acknowledgements . . . . . . . . . . . . . . . . . .  36
   Appendix B.  Change History . . . . . . . . . . . . . . . . . . .  36
     B.1.  Change from 00 to 01  . . . . . . . . . . . . . . . . . .  36
     B.2.  Change from 01 to 02  . . . . . . . . . . . . . . . . . .  36
     B.3.  Change from 02 to 03  . . . . . . . . . . . . . . . . . .  36
     B.4.  Change from 03 to 04  . . . . . . . . . . . . . . . . . .  36
     B.5.  Change from 04 to REGEXT 00 . . . . . . . . . . . . . . .  37
     B.6.  Change from REGEXT 00 to REGEXT 01  . . . . . . . . . . .  37
     B.7.  Change from REGEXT 01 to REGEXT 02  . . . . . . . . . . .  37
     B.8.  Change from REGEXT 02 to REGEXT 03  . . . . . . . . . . .  37
     B.9.  Change from REGEXT 03 to REGEXT 04  . . . . . . . . . . .  37



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     B.10. Change from REGEXT 04 to REGEXT 05  . . . . . . . . . . .  37
     B.11. Change from REGEXT 05 to REGEXT 06  . . . . . . . . . . .  37
   Author's Address  . . . . . . . . . . . . . . . . . . . . . . . .  38

1.  Introduction

   This document describes an extension mapping for version 1.0 of the
   Extensible Provisioning Protocol (EPP) [RFC5730].  This mapping, an
   extension to EPP object mappings like the EPP domain name mapping
   [RFC5731], EPP host mapping [RFC5732], and EPP contact mapping
   [RFC5733], can be used to pass a verification code to one of the EPP
   transform commands.  The domain name object is used for examples in
   the document.  The verification code is signed using XML Signature
   [W3C.CR-xmldsig-core2-20120124] and is "base64" encoded.  The
   "base64" encoded text of the verification code MUST conform to
   [RFC2045].  The verification code demonstrates that verification was
   done by a Verification Service Provider (VSP).

   The Verification Service Provider (VSP) is a certified party to
   verify that data is in compliance with the policies of a locality.  A
   locality MAY require the client to have data verified in accordance
   with local regulations or laws utilizing data sources not available
   to the server.  The VSP has access to the local data sources and is
   authorized to verify the data.  Examples include verifying that the
   domain name is not prohibited and verifying that the domain name
   registrant is a valid individual, organization, or business in the
   locality.  The data verified, and the objects and operations that
   require the verification code to be passed to the server, is up to
   the policies of the locality.  The verification code represents a
   marker that the verification was completed.  The signer certificate
   and the digital signature of the verification code MUST be verified
   by the server.

1.1.  Conventions Used in This Document

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
   "OPTIONAL" in this document are to be interpreted as described in BCP
   14 [RFC2119] [RFC8174] when, and only when, they appear in all
   capitals, as shown here.

   XML is case sensitive.  Unless stated otherwise, XML specifications
   and examples provided in this document MUST be interpreted in the
   character case presented in order to develop a conforming
   implementation.

   In examples, "C:" represents lines sent by a protocol client and "S:"
   represents lines returned by a protocol server.  Indentation and



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   white space in examples are provided only to illustrate element
   relationships and are not a REQUIRED feature of this protocol.

   "verificationCode-1.0" is used as an abbreviation for
   "urn:ietf:params:xml:ns:verificationCode-1.0".  The XML namespace
   prefix "verificationCode" is used, but implementations MUST NOT
   depend on it and instead employ a proper namespace-aware XML parser
   and serializer to interpret and output the XML documents.

2.  Object Attributes

   This extension adds additional elements to EPP object mappings like
   the EPP domain name mapping [RFC5731], EPP host mapping [RFC5732],
   and EPP contact mapping [RFC5733].  Only those new elements are
   described here.

2.1.  Verification Code

   The Verification Code is a formatted token, referred to as the
   Verification Code Token, that is digitally signed by a Verification
   Service Provider (VSP) using XML Signature
   [W3C.CR-xmldsig-core2-20120124], using the process described in
   Section 2.1.1, and is then "base64" encoded, as defined in
   Section 2.1.2.  The Verification Code Token syntax is specified using
   Augmented Backus-Naur Form (ABNF) grammar [RFC5234] as follows:

   Verification Code Token ABNF

   token     = vsp-id "-" verification-id ; Verification Code Token
   vsp-id    = 1*DIGIT                    ; VSP Identifier
   verification-id = 1*(DIGIT / ALPHA)    ; Verification Identifier

   For a VSP given VSP Identifier "1" and with a Verification Identifier
   of "abc123", the resulting Verification Code Token is "1-abc123".
   The Verification Identifier MUST be unique within a VSP and the VSP
   Identifier MUST be unique across supporting VSP's, so the
   Verification Code Token MUST be unique to an individual verification.
   The VSP Identifiers MAY require registration within an IANA registry.

2.1.1.  Signed Code

   The <verificationCode:signedCode> is the fragment of XML that is
   digitally signed using XML Signature [W3C.CR-xmldsig-core2-20120124].
   The <verificationCode:signedCode> element includes a required "id"
   attribute of type XSD ID for use with an IDREF URI from the Signature
   element.  The certificate of the issuer MUST be included with the
   Signature so it can be chained with the issuer's certificate by the
   validating client.



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   The <verificationCode:signedCode> element includes a REQUIRED "type"
   attribute for use in defining the type of the signed code.  It is up
   to the VSP and the server to define the valid values for the "type"
   attribute.  Examples of possible "type" attribute values include
   "domain" for verification of the domain name, "registrant" for
   verification of the registrant contact, or "domain-registrant" for
   verification of both the domain name and the registrant.  The typed
   signed code is used to indicate the verifications that are done by
   the VSP.  The "type" attribute values MAY require registration within
   an IANA registry.

   A <verificationCode:signedCode> element substitutes for the
   <verificationCode:abstractSignedCode> abstract element to define a
   concrete definition of a signed code.  The
   <verificationCode:abstractSignedCode> element can be replaced by
   other signed code definitions using the XML schema substitution
   groups feature.

   The child elements of the <verificationCode:signedCode> element
   include:

   <verificationCode:code>  Contains the Verification Code Token as
       defined by the ABNF in Section 2.1.
   <Signature>  XML Signature [W3C.CR-xmldsig-core2-20120124] for the
       <verificationCode:signedCode>.  Use of a namespace prefix, like
       "dsig", is recommended for the XML Signature
       [W3C.CR-xmldsig-core2-20120124] elements.

   Example of a "domain" typed signed code using the
   <verificationCode:signedCode> element and XML Signature
   [W3C.CR-xmldsig-core2-20120124]:

   <verificationCode:signedCode
     xmlns:verificationCode=
     "urn:ietf:params:xml:ns:verificationCode-1.0"
     id="signedCode">
     <verificationCode:code type="domain">1-abc111
     </verificationCode:code>
     <Signature xmlns="http://www.w3.org/2000/09/xmldsig#">
      <SignedInfo>
       <CanonicalizationMethod
    Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#"/>
       <SignatureMethod
    Algorithm="http://www.w3.org/2001/04/xmldsig-more#rsa-sha256"/>
       <Reference URI="#signedCode">
        <Transforms>
         <Transform
    Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature"/>



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        </Transforms>
        <DigestMethod
    Algorithm="http://www.w3.org/2001/04/xmlenc#sha256"/>
    <DigestValue>wgyW3nZPoEfpptlhRILKnOQnbdtU6ArM7ShrAfHgDFg=
    </DigestValue>
       </Reference>
      </SignedInfo>
      <SignatureValue>
    jMu4PfyQGiJBF0GWSEPFCJjmywCEqR2h4LD+ge6XQ+JnmKFFCuCZS/3SLKAx0L1w
    QDFO2e0Y69k2G7/LGE37X3vOflobFM1oGwja8+GMVraoto5xAd4/AF7eHukgAymD
    o9toxoa2h0yV4A4PmXzsU6S86XtCcUE+S/WM72nyn47zoUCzzPKHZBRyeWehVFQ+
    jYRMIAMzM57HHQA+6eaXefRvtPETgUO4aVIVSugc4OUAZZwbYcZrC6wOaQqqqAZi
    30aPOBYbAvHMSmWSS+hFkbshomJfHxb97TD2grlYNrQIzqXk7WbHWy2SYdA+sI/Z
    ipJsXNa6osTUw1CzA7jfwA==
      </SignatureValue>
      <KeyInfo>
       <X509Data>
       <X509Certificate>
    MIIESTCCAzGgAwIBAgIBAjANBgkqhkiG9w0BAQsFADBiMQswCQYDVQQGEwJVUzEL
    MAkGA1UECBMCQ0ExFDASBgNVBAcTC0xvcyBBbmdlbGVzMRMwEQYDVQQKEwpJQ0FO
    TiBUTUNIMRswGQYDVQQDExJJQ0FOTiBUTUNIIFRFU1QgQ0EwHhcNMTMwMjA4MDAw
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    FDASBgNVBAcTC0xvcyBBbmdlbGVzMRcwFQYDVQQKEw5WYWxpZGF0b3IgVE1DSDEh
    MB8GA1UEAxMYVmFsaWRhdG9yIFRNQ0ggVEVTVCBDRVJUMIIBIjANBgkqhkiG9w0B
    AQEFAAOCAQ8AMIIBCgKCAQEAo/cwvXhbVYl0RDWWvoyeZpETVZVVcMCovUVNg/sw
    WinuMgEWgVQFrz0xA04pEhXCFVv4evbUpekJ5buqU1gmQyOsCKQlhOHTdPjvkC5u
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    AQH/BAQDAgeAMC4GA1UdHwQnMCUwI6AhoB+GHWh0dHA6Ly9jcmwuaWNhbm4ub3Jn
    L3RtY2guY3JsMA0GCSqGSIb3DQEBCwUAA4IBAQB2qSy7ui+43cebKUKwWPrzz9y/
    IkrMeJGKjo40n+9uekaw3DJ5EqiOf/qZ4pjBD++oR6BJCb6NQuQKwnoAz5lE4Ssu
    y5+i93oT3HfyVc4gNMIoHm1PS19l7DBKrbwbzAea/0jKWVzrvmV7TBfjxD3AQo1R
    bU5dBr6IjbdLFlnO5x0G0mrG7x5OUPuurihyiURpFDpwH8KAH1wMcCpXGXFRtGKk
    wydgyVYAty7otkl/z3bZkCVT34gPvF70sR6+QxUy8u0LzF5A/beYaZpxSYG31amL
    AdXitTWFipaIGea9lEGFM0L9+Bg7XzNn4nVLXokyEB3bgS4scG6QznX23FGk
      </X509Certificate>
      </X509Data>
      </KeyInfo>
     </Signature>
   </verificationCode:signedCode>





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2.1.2.  Encoded Signed Code

   The <verificationCode:encodedSignedCode> element contains one or more
   encoded form of the digitally signed <verificationCode:signedCode>
   element, described in Section 2.1.1.

   The child elements of the <verificationCode:encodedSignedCode>
   element include:

   <verificationCode:code>  One or more <verificationCode:code> elements
       that is an encoded form of the digitally signed
       <verificationCode:signedCode> element, described in
       Section 2.1.1, with the encoding defined by the "encoding"
       attribute with the default "encoding" value of "base64".  The
       "base64" encoded text of the <verificationCode:code> element MUST
       conform to [RFC2045].

   Example <verificationCode:encodedSignedCode> element that contains
   one "base64" encoded <verificationCode:signedCode> contained in the
   <verificationCode:code> element:

   <verificationCode:encodedSignedCode
     xmlns:verificationCode=
       "urn:ietf:params:xml:ns:verificationCode-1.0">
     <verificationCode:code>
   ICAgICAgPHZlcmlmaWNhdGlvbkNvZGU6c2lnbmVkQ29kZQogICAgICAgIHhtbG5z
   OnZlcmlmaWNhdGlvbkNvZGU9CiAgICAgICAgICAidXJuOmlldGY6cGFyYW1zOnht
   bDpuczp2ZXJpZmljYXRpb25Db2RlLTEuMCIKICAgICAgICAgIGlkPSJzaWduZWRD
   b2RlIj4KICAgCQk8dmVyaWZpY2F0aW9uQ29kZTpjb2RlPjEtYWJjMTIzPC92ZXJp
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   d2JZY1pyQzZ3T2FRcXFxQVppCiAzMGFQT0JZYkF2SE1TbVdTUytoRmtic2hvbUpm



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   aTkzb1QzSGZ5VmM0Z05NSW9IbTFQUzE5bDdEQktyYndiekFlYS8waktXVnpydm1W
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   aWh5aVVScEZEcHdIOEtBSDF3TWNDcFhHWEZSdEdLawogd3lkZ3lWWUF0eTdvdGts
   L3ozYlprQ1ZUMzRnUHZGNzBzUjYrUXhVeTh1MEx6RjVBL2JlWWFacHhTWUczMWFt
   TAogQWRYaXRUV0ZpcGFJR2VhOWxFR0ZNMEw5K0JnN1h6Tm40blZMWG9reUVCM2Jn
   UzRzY0c2UXpuWDIzRkdrCiAgIDwvWDUwOUNlcnRpZmljYXRlPgogICA8L1g1MDlE
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   b25Db2RlOnNpZ25lZENvZGU+Cg==
     </verificationCode:code>
   </verificationCode:encodedSignedCode>

   Example <verificationCode:encodedSignedCode> element that contains
   two <verificationCode:code> elements ;.

   <?xml version="1.0" encoding="UTF-8" standalone="no"?>
   <epp xmlns="urn:ietf:params:xml:ns:epp-1.0">
     <command>
       <create>
         <domain:create



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          xmlns:domain="urn:ietf:params:xml:ns:domain-1.0">
           <domain:name>domain.example</domain:name>
           <domain:registrant>jd1234</domain:registrant>
           <domain:contact type="admin">sh8013</domain:contact>
           <domain:contact type="tech">sh8013</domain:contact>
           <domain:authInfo>
             <domain:pw>2fooBAR</domain:pw>
           </domain:authInfo>
         </domain:create>
       </create>
       <extension>
         <verificationCode:encodedSignedCode
           xmlns:verificationCode=
             "urn:ietf:params:xml:ns:verificationCode-1.0">
           <verificationCode:code>
   ICAgICAgPHZlcmlmaWNhdGlvbkNvZGU6c2lnbmVkQ29kZQogICAgICAgIHhtbG5z
   OnZlcmlmaWNhdGlvbkNvZGU9CiAgICAgICAgICAidXJuOmlldGY6cGFyYW1zOnht
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   b2RlIj4KICAgCQk8dmVyaWZpY2F0aW9uQ29kZTpjb2RlPjEtYWJjMTIzPC92ZXJp
   ZmljYXRpb25Db2RlOmNvZGU+CiAgPFNpZ25hdHVyZSB4bWxucz0iaHR0cDovL3d3
   dy53My5vcmcvMjAwMC8wOS94bWxkc2lnIyI+CiAgIDxTaWduZWRJbmZvPgogICAg
   PENhbm9uaWNhbGl6YXRpb25NZXRob2QKIEFsZ29yaXRobT0iaHR0cDovL3d3dy53
   My5vcmcvMjAwMS8xMC94bWwtZXhjLWMxNG4jIi8+CiAgICA8U2lnbmF0dXJlTWV0
   aG9kCiBBbGdvcml0aG09Imh0dHA6Ly93d3cudzMub3JnLzIwMDEvMDQveG1sZHNp
   Zy1tb3JlI3JzYS1zaGEyNTYiLz4KICAgIDxSZWZlcmVuY2UgVVJJPSIjc2lnbmVk
   Q29kZSI+CiAgICAgPFRyYW5zZm9ybXM+CiAgICAgIDxUcmFuc2Zvcm0KIEFsZ29y
   aXRobT0iaHR0cDovL3d3dy53My5vcmcvMjAwMC8wOS94bWxkc2lnI2VudmVsb3Bl
   ZC1zaWduYXR1cmUiLz4KICAgICA8L1RyYW5zZm9ybXM+CiAgICAgPERpZ2VzdE1l
   dGhvZAogQWxnb3JpdGhtPSJodHRwOi8vd3d3LnczLm9yZy8yMDAxLzA0L3htbGVu
   YyNzaGEyNTYiLz4KIDxEaWdlc3RWYWx1ZT53Z3lXM25aUG9FZnBwdGxoUklMS25P
   UW5iZHRVNkFyTTdTaHJBZkhnREZnPTwvRGlnZXN0VmFsdWU+CiAgICA8L1JlZmVy
   ZW5jZT4KICAgPC9TaWduZWRJbmZvPgogICA8U2lnbmF0dXJlVmFsdWU+CiBqTXU0
   UGZ5UUdpSkJGMEdXU0VQRkNKam15d0NFcVIyaDRMRCtnZTZYUStKbm1LRkZDdUNa
   Uy8zU0xLQXgwTDF3CiBRREZPMmUwWTY5azJHNy9MR0UzN1gzdk9mbG9iRk0xb0d3
   amE4K0dNVnJhb3RvNXhBZDQvQUY3ZUh1a2dBeW1ECiBvOXRveG9hMmgweVY0QTRQ
   bVh6c1U2Uzg2WHRDY1VFK1MvV003Mm55bjQ3em9VQ3p6UEtIWkJSeWVXZWhWRlEr
   CiBqWVJNSUFNek01N0hIUUErNmVhWGVmUnZ0UEVUZ1VPNGFWSVZTdWdjNE9VQVpa
   d2JZY1pyQzZ3T2FRcXFxQVppCiAzMGFQT0JZYkF2SE1TbVdTUytoRmtic2hvbUpm
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   VFV3MUN6QTdqZndBPT0KICAgPC9TaWduYXR1cmVWYWx1ZT4KICAgPEtleUluZm8+
   CiAgICA8WDUwOURhdGE+CiAgICA8WDUwOUNlcnRpZmljYXRlPgogTUlJRVNUQ0NB
   ekdnQXdJQkFnSUJBakFOQmdrcWhraUc5dzBCQVFzRkFEQmlNUXN3Q1FZRFZRUUdF
   d0pWVXpFTAogTUFrR0ExVUVDQk1DUTBFeEZEQVNCZ05WQkFjVEMweHZjeUJCYm1k
   bGJHVnpNUk13RVFZRFZRUUtFd3BKUTBGTwogVGlCVVRVTklNUnN3R1FZRFZRUURF
   eEpKUTBGT1RpQlVUVU5JSUZSRlUxUWdRMEV3SGhjTk1UTXdNakE0TURBdwogTURB
   d1doY05NVGd3TWpBM01qTTFPVFU1V2pCc01Rc3dDUVlEVlFRR0V3SlZVekVMTUFr
   R0ExVUVDQk1DUTBFeAogRkRBU0JnTlZCQWNUQzB4dmN5QkJibWRsYkdWek1SY3dG
   UVlEVlFRS0V3NVdZV3hwWkdGMGIzSWdWRTFEU0RFaAogTUI4R0ExVUVBeE1ZVm1G



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   c2FXUmhkRzl5SUZSTlEwZ2dWRVZUVkNCRFJWSlVNSUlCSWpBTkJna3Foa2lHOXcw
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   aTkzb1QzSGZ5VmM0Z05NSW9IbTFQUzE5bDdEQktyYndiekFlYS8waktXVnpydm1W
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   YXRhPgogICA8L0tleUluZm8+CiAgPC9TaWduYXR1cmU+CgkJPC92ZXJpZmljYXRp
   b25Db2RlOnNpZ25lZENvZGU+Cg==
           </verificationCode:code>
           <verificationCode:code>
   PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiPz48dmVyaWZpY2F0
   aW9uQ29kZTpzaWduZWRDb2RlIHhtbG5zOnZlcmlmaWNhdGlvbkNvZGU9InVybjpp
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   Pjxkc2lnOlNpZ25lZEluZm8+PGRzaWc6Q2Fub25pY2FsaXphdGlvbk1ldGhvZCBB
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   c2lnOlRyYW5zZm9ybXM+PGRzaWc6RGlnZXN0TWV0aG9kIEFsZ29yaXRobT0iaHR0
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   U1RuQk1DU3dXM0dWUzZnUEtkaDBZTlZicERud1d4b1BtYlR2YkVsNDE4NFlKZ3Uw



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   WXB3RkROMmZLY3JVCk1YV0hncE56K0oycTh6MWpTcVJMUEw0UmpnRWw0eGhiOXl5
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   RXFIY0dLTUxnRU1nbHBnQ3RtOFlIcXVqb0tXUk0yUDNiK2h3ZTRsU0hSWVRjK0pB
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   Q29kZT4=
           </verificationCode:code>
       </verificationCode:encodedSignedCode>
       </extension>
       <clTRID>ABC-12345</clTRID>
     </command>
   </epp>

2.2.  Verification Profile

   A Verification Profile defines the set of verification code types,
   the commands that the verification code types are required,
   supported, or not supported, and the grace period by which the



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   verification code types MUST be set.  It is up to server policy what
   action to take if the verification code type is not set by the grace
   period.  A server MAY support many verification profiles, each with a
   unique name and a unique verification policy that is implemented by
   the server.  Each client MAY have zero or more server assigned
   verification profiles that will enforce the required verification
   policies.  Most likely a client will be assigned zero or one server
   assigned verification profile, but overlapping profiles is possible.
   Overlapping verification profiles MUST be treated as a logical "and"
   of the policies by the server.  If no verification profile is
   assigned to the client, no additional verification is required by the
   client.

3.  EPP Command Mapping

   A detailed description of the EPP syntax and semantics can be found
   in the EPP core protocol specification [RFC5730].

3.1.  EPP Query Commands

   EPP provides three commands to retrieve object information: <check>
   to determine if an object is known to the server, <info> to retrieve
   detailed information associated with an object, and <transfer> to
   retrieve object transfer status information.

3.1.1.  EPP <check> Command

   This extension does not add any elements to the EPP <check> command
   or <check> response described in the [RFC5730].

3.1.2.  EPP <info> Command

   This extension defines additional elements to extend the EPP <info>
   command of an object mapping like the EPP domain name mapping
   [RFC5731], EPP host mapping [RFC5732], and EPP contact mapping
   [RFC5733].

   The EPP <info> command is used to retrieve the verification
   information.  The verification information is based on the
   verification profile, as defined in Section 2.2, set in the server
   for the client.  The <verificationCode:info> element is an empty
   element that indicates that the client requests the verification
   information.  The OPTIONAL "profile" attribute can be used by the
   client to explicitly specify a verification profile, as defined in
   Section 2.2, to base the verification information on.  It is up to
   server policy on the set of verification profiles that the client is
   allowed to explicitly specify, and if the client is not allowed, the
   server MUST return the 2201 error response.



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   Example <info> domain command with the <verificationCode:info>
   extension to retrieve the verification information for the domain
   "domain.example", using the profiles associated with the client:

   C:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
   C:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0">
   C:  <command>
   C:    <info>
   C:      <domain:info
   C:        xmlns:domain="urn:ietf:params:xml:ns:domain-1.0">
   C:        <domain:name>domain.example</domain:name>
   C:      </domain:info>
   C:    </info>
   C:    <extension>
   C:      <verificationCode:info
   C:        xmlns:verificationCode=
   C:          "urn:ietf:params:xml:ns:verificationCode-1.0"/>
   C:    </extension>
   C:    <clTRID>ABC-12345</clTRID>
   C:  </command>
   C:</epp>

   Example <info> domain command with the <verificationCode:info>
   extension to retrieve the verification information for the domain
   "domain.example", using the profiles associated with the client and
   with the authorization information to retrieve the verification codes
   from the non-sponsoring client:

   C:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
   C:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0">
   C:  <command>
   C:    <info>
   C:      <domain:info
   C:        xmlns:domain="urn:ietf:params:xml:ns:domain-1.0">
   C:        <domain:name>domain.example</domain:name>
   C:        <domain:authInfo>
   C:          <domain:pw>2fooBAR</domain:pw>
   C:        </domain:authInfo>
   C:      </domain:info>
   C:    </info>
   C:    <extension>
   C:      <verificationCode:info
   C:        xmlns:verificationCode=
   C:          "urn:ietf:params:xml:ns:verificationCode-1.0"/>
   C:    </extension>
   C:    <clTRID>ABC-12345</clTRID>
   C:  </command>
   C:</epp>



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   Example <info> domain command with the <verificationCode:info>
   extension to retrieve the verification information for the domain
   "domain.example", using the the "sample" profile:

   C:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
   C:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0">
   C:  <command>
   C:    <info>
   C:      <domain:info
   C:        xmlns:domain="urn:ietf:params:xml:ns:domain-1.0">
   C:        <domain:name>domain.example</domain:name>
   C:      </domain:info>
   C:    </info>
   C:    <extension>
   C:      <verificationCode:info
   C:        xmlns:verificationCode=
   C:          "urn:ietf:params:xml:ns:verificationCode-1.0"
   C:        profile="sample"/>
   C:    </extension>
   C:    <clTRID>ABC-12345</clTRID>
   C:  </command>
   C:</epp>

   If the query was successful, the server replies with a
   <verificationCode:infData> element along with the regular EPP
   <resData>.  The <verificationCode:infData> element contains the
   following child elements:

   <verificationCode:status>  The status of the verification for the
       object, using all of the verification profiles assigned to the
       client.  There are four possible values for the status:


       notApplicable  The status is not applicable to the client since
           there is no assigned verification profile.
       nonCompliant  The object is non-compliant according to the
           verification profiles.  If at least one of the profiles is
           "nonCompliant", the object is "nonCompliant".
       pendingCompliance  The object is not in compliance with the
           verification profiles, but has a grace period to set the
           required set of verification codes, as reflected by the due
           date of the verification code type.  If at least one of the
           profiles is "pendingCompliance" and none of the profiles is
           "nonCompliant", the object is "pendingCompliance".
       compliant  The object is compliant with the verification
           profiles.  If All of the profiles for the object are
           "compliant" or if the object has no assignd profiles, the
           object is "compliant".



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   <verificationCode:profile>  Zero or more OPTIONAL
       <verificationCode:profile> elements that defines the verification
       status of the object based on the profile.  The required "name"
       attribute defines the name of the profile.  The
       <verificationCode:profile> element contains the following child
       elements:


       <verificationCode:status>  The status of the verification for the
           object and the profile.  There are four possible values for
           the status:


           notApplicable  The profile status is not applicable to the
               client based on the assigned verification profiles or the
               profile specified.
           nonCompliant  The object is non-compliant according to the
               verification profile.
           pendingCompliance  The object is not in compliance with the
               verification profile, but has a grace period to set the
               required set of verification codes, as reflected by the
               due date of the verification code type.
           compliant  The object is compliant with the verification
               profile.
       <verificationCode:missing>  OPTIONAL list of missing verification
           code types.  The <verificationCode:missing> element is
           returned only if there is at least one missing verification
           code type and based on server policy.  The
           <verificationCode:missing> element contains the following
           child elements:


           <verificationCode:code>  One or more <verificationCode:code>
               elements that is empty with the REQUIRED "type" attribute
               that indicates the verification code type and the
               REQUIRED "due" attribute that indicates when the
               verification code type was or is due.  Past due
               verification code types will result in the
               <verificationCode:status> element being set to
               "nonCompliant".
       <verificationCode:set>  OPTIONAL list of set verification codes.
           The <verificationCode:set> element is returned only if there
           is at least one set verification code.  The
           <verificationCode:set> element contains the following child
           elements:






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           <verificationCode:code>  One or more <verificationCode:code>
               elements containing the verification code with a REQUIRED
               "type" attribute that indicates the code type and a
               REQUIRED "date" attribute that indicates when the
               verification code was set.  The inclusion of the code
               value is up server policy, so if the server determines
               that the code value cannot be exposed to a non-sponsoring
               client, the <verificationCode:code> element MUST be
               empty.

   Example <info> domain response using the <verificationCode:infData>
   extension for a compliant domain using the "sample" profile, and with
   the two verification codes, from the sponsoring or authorized client:

   S:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
   S:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0">
   S:  <response>
   S:    <result code="1000">
   S:      <msg>Command completed successfully</msg>
   S:    </result>
   S:    <resData>
   S:      <domain:infData
   S:        xmlns:domain="urn:ietf:params:xml:ns:domain-1.0">
   S:        <domain:name>domain.example</domain:name>
   S:        <domain:roid>DOMAIN-REP</domain:roid>
   S:        <domain:status s="ok"/>
   S:        <domain:clID>ClientX</domain:clID>
   S:        <domain:crID>ClientY</domain:crID>
   S:        <domain:crDate>2010-04-03T22:00:00.0Z
   S:        </domain:crDate>
   S:        <domain:exDate>2015-04-03T22:00:00.0Z
   S:        </domain:exDate>
   S:        <domain:authInfo>
   S:          <domain:pw>2fooBAR</domain:pw>
   S:        </domain:authInfo>
   S:      </domain:infData>
   S:    </resData>
   S:    <extension>
   S:      <verificationCode:infData
   S:        xmlns:verificationCode=
   S:        "urn:ietf:params:xml:ns:verificationCode-1.0">
   S:        <verificationCode:status>compliant
   S:        </verificationCode:status>
   S:        <verificationCode:profile name="sample">
   S:          <verificationCode:status>compliant
   S:          </verificationCode:status>
   S:          <verificationCode:set>
   S:            <verificationCode:code type="domain"



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   S:              date="2010-04-03T22:00:00.0Z">1-abc333
   S:            </verificationCode:code>
   S:            <verificationCode:code type="registrant"
   S:              date="2010-04-03T22:00:00.0Z">1-abc444
   S:            </verificationCode:code>
   S:          </verificationCode:set>
   S:        </verificationCode:profile>
   S:      </verificationCode:infData>
   S:    </extension>
   S:    <trID>
   S:      <clTRID>ABC-12345</clTRID>
   S:      <svTRID>54322-XYZ</svTRID>
   S:    </trID>
   S:  </response>
   S:</epp>

   Example <info> domain response using the <verificationCode:infData>
   extension for a compliant domain using the "sample" profile, and with
   the two verification codes, from the sponsoring or authorized client
   that also includes codes set for the "sample2" profile:

   S:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
   S:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0">
   S:  <response>
   S:    <result code="1000">
   S:      <msg>Command completed successfully</msg>
   S:    </result>
   S:    <resData>
   S:      <domain:infData
   S:        xmlns:domain="urn:ietf:params:xml:ns:domain-1.0">
   S:        <domain:name>domain.example</domain:name>
   S:        <domain:roid>DOMAIN-REP</domain:roid>
   S:        <domain:status s="ok"/>
   S:        <domain:clID>ClientX</domain:clID>
   S:        <domain:crID>ClientY</domain:crID>
   S:        <domain:crDate>2010-04-03T22:00:00.0Z
   S:        </domain:crDate>
   S:        <domain:exDate>2015-04-03T22:00:00.0Z
   S:        </domain:exDate>
   S:        <domain:authInfo>
   S:          <domain:pw>2fooBAR</domain:pw>
   S:        </domain:authInfo>
   S:      </domain:infData>
   S:    </resData>
   S:    <extension>
   S:      <verificationCode:infData
   S:        xmlns:verificationCode=
   S:        "urn:ietf:params:xml:ns:verificationCode-1.0">



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   S:        <verificationCode:status>compliant
   S:        </verificationCode:status>
   S:        <verificationCode:profile name="sample">
   S:          <verificationCode:status>compliant
   S:          </verificationCode:status>
   S:          <verificationCode:set>
   S:            <verificationCode:code type="domain"
   S:              date="2010-04-03T22:00:00.0Z">1-abc333
   S:            </verificationCode:code>
   S:            <verificationCode:code type="registrant"
   S:              date="2010-04-03T22:00:00.0Z">1-abc444
   S:            </verificationCode:code>
   S:          </verificationCode:set>
   S:        </verificationCode:profile>
   S:        <verificationCode:profile name="sample2">
   S:          <verificationCode:status>notApplicable
   S:          </verificationCode:status>
   S:          <verificationCode:set>
   S:            <verificationCode:code type="domain"
   S:              date="2010-04-03T22:00:00.0Z">2-abc555
   S:            </verificationCode:code>
   S:          </verificationCode:set>
   S:        </verificationCode:profile>
   S:      </verificationCode:infData>
   S:    </extension>
   S:    <trID>
   S:      <clTRID>ABC-12345</clTRID>
   S:      <svTRID>54322-XYZ</svTRID>
   S:    </trID>
   S:  </response>
   S:</epp>




















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   Example <info> domain response using the <verificationCode:infData>
   extension for a compliant domain using the "sample" profile, and with
   the two verification code types, from the non-sponsoring client:

   S:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
   S:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0">
   S:  <response>
   S:    <result code="1000">
   S:      <msg>Command completed successfully</msg>
   S:    </result>
   S:    <resData>
   S:      <domain:infData
   S:        xmlns:domain="urn:ietf:params:xml:ns:domain-1.0">
   S:        <domain:name>domain.example</domain:name>
   S:        <domain:roid>DOMAIN-REP</domain:roid>
   S:        <domain:status s="ok"/>
   S:        <domain:clID>ClientX</domain:clID>
   S:        <domain:crID>ClientY</domain:crID>
   S:        <domain:crDate>2010-04-03T22:00:00.0Z
   S:        </domain:crDate>
   S:        <domain:exDate>2015-04-03T22:00:00.0Z
   S:        </domain:exDate>
   S:      </domain:infData>
   S:    </resData>
   S:    <extension>
   S:      <verificationCode:infData
   S:        xmlns:verificationCode=
   S:        "urn:ietf:params:xml:ns:verificationCode-1.0">
   S:        <verificationCode:status>compliant
   S:        </verificationCode:status>
   S:        <verificationCode:profile name="sample">
   S:          <verificationCode:status>compliant
   S:          </verificationCode:status>
   S:          <verificationCode:set>
   S:            <verificationCode:code type="domain"
   S:              date="2010-04-03T22:00:00.0Z"/>
   S:            <verificationCode:code type="registrant"
   S:              date="2010-04-03T22:00:00.0Z"/>
   S:          </verificationCode:set>
   S:        </verificationCode:profile>
   S:      </verificationCode:infData>
   S:    </extension>
   S:    <trID>
   S:      <clTRID>ABC-12345</clTRID>
   S:      <svTRID>54322-XYZ</svTRID>
   S:    </trID>
   S:  </response>
   S:</epp>



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   Example <info> domain response using the <verificationCode:infData>
   extension for a non-compliant domain using the "sample" profile, and
   with the verification code types missing along with their due dates:
















































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   S:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
   S:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0">
   S:  <response>
   S:    <result code="1000">
   S:      <msg>Command completed successfully</msg>
   S:    </result>
   S:    <resData>
   S:      <domain:infData
   S:        xmlns:domain="urn:ietf:params:xml:ns:domain-1.0">
   S:        <domain:name>domain.example</domain:name>
   S:        <domain:roid>DOMAIN-REP</domain:roid>
   S:        <domain:status s="serverHold"/>
   S:        <domain:clID>ClientX</domain:clID>
   S:        <domain:crID>ClientY</domain:crID>
   S:        <domain:crDate>2010-04-03T22:00:00.0Z
   S:        </domain:crDate>
   S:        <domain:exDate>2015-04-03T22:00:00.0Z
   S:        </domain:exDate>
   S:      </domain:infData>
   S:    </resData>
   S:    <extension>
   S:      <verificationCode:infData
   S:        xmlns:verificationCode=
   S:        "urn:ietf:params:xml:ns:verificationCode-1.0">
   S:        <verificationCode:status>nonCompliant
   S:        </verificationCode:status>
   S:        <verificationCode:profile name="sample">
   S:          <verificationCode:status>nonCompliant
   S:          </verificationCode:status>
   S:          <verificationCode:missing>
   S:            <verificationCode:code
   S:              type="domain"
   S:              due="2010-04-03T22:00:00.0Z"/>
   S:            <verificationCode:code
   S:              type="registrant"
   S:              due="2010-04-08T22:00:00.0Z"/>
   S:          </verificationCode:missing>
   S:        </verificationCode:profile>
   S:      </verificationCode:infData>
   S:    </extension>
   S:    <trID>
   S:      <clTRID>ABC-12345</clTRID>
   S:      <svTRID>54322-XYZ</svTRID>
   S:    </trID>
   S:  </response>
   S:</epp>

   Example <info> domain response using the <verificationCode:infData>



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   extension for a pending compliance domain using the "sample" profile,
   with the verification code type missing along with the due date, and
   with set verification code:
















































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   S:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
   S:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0">
   S:  <response>
   S:    <result code="1000">
   S:      <msg>Command completed successfully</msg>
   S:    </result>
   S:    <resData>
   S:      <domain:infData
   S:        xmlns:domain="urn:ietf:params:xml:ns:domain-1.0">
   S:        <domain:name>domain.example</domain:name>
   S:        <domain:roid>DOMAIN-REP</domain:roid>
   S:        <domain:status s="ok"/>
   S:        <domain:clID>ClientX</domain:clID>
   S:        <domain:crID>ClientY</domain:crID>
   S:        <domain:crDate>2010-04-03T22:00:00.0Z
   S:        </domain:crDate>
   S:        <domain:exDate>2015-04-03T22:00:00.0Z
   S:        </domain:exDate>
   S:      </domain:infData>
   S:    </resData>
   S:    <extension>
   S:      <verificationCode:infData
   S:        xmlns:verificationCode=
   S:        "urn:ietf:params:xml:ns:verificationCode-1.0">
   S:        <verificationCode:status>pendingCompliance
   S:        </verificationCode:status>
   S:        <verificationCode:profile name="sample">
   S:          <verificationCode:status>pendingCompliance
   S:          </verificationCode:status>
   S:          <verificationCode:missing>
   S:            <verificationCode:code
   S:              type="registrant"
   S:              due="2010-04-08T22:00:00.0Z"/>
   S:          </verificationCode:missing>
   S:          <verificationCode:set>
   S:            <verificationCode:code type="domain"
   S:              date="2010-04-03T22:00:00.0Z">1-abc333
   S:            </verificationCode:code>
   S:          </verificationCode:set>
   S:        </verificationCode:profile>
   S:      </verificationCode:infData>
   S:    </extension>
   S:    <trID>
   S:      <clTRID>ABC-12345</clTRID>
   S:      <svTRID>54322-XYZ</svTRID>
   S:    </trID>
   S:  </response>
   S:</epp>



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   Example <info> domain response using the <verificationCode:infData>
   extension for a client that does not have a verification profile
   assigned:

   S:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
   S:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0">
   S:  <response>
   S:    <result code="1000">
   S:      <msg>Command completed successfully</msg>
   S:    </result>
   S:    <resData>
   S:      <domain:infData
   S:        xmlns:domain="urn:ietf:params:xml:ns:domain-1.0">
   S:        <domain:name>domain.example</domain:name>
   S:        <domain:roid>DOMAIN-REP</domain:roid>
   S:        <domain:status s="ok"/>
   S:        <domain:clID>ClientX</domain:clID>
   S:        <domain:crID>ClientY</domain:crID>
   S:        <domain:crDate>2010-04-03T22:00:00.0Z
   S:        </domain:crDate>
   S:        <domain:exDate>2015-04-03T22:00:00.0Z
   S:        </domain:exDate>
   S:      </domain:infData>
   S:    </resData>
   S:    <extension>
   S:      <verificationCode:infData
   S:        xmlns:verificationCode=
   S:        "urn:ietf:params:xml:ns:verificationCode-1.0">
   S:        <verificationCode:status>notApplicable
   S:        </verificationCode:status>
   S:      </verificationCode:infData>
   S:    </extension>
   S:    <trID>
   S:      <clTRID>ABC-12345</clTRID>
   S:      <svTRID>54322-XYZ</svTRID>
   S:    </trID>
   S:  </response>
   S:</epp>

3.1.3.  EPP <transfer> Command

   This extension does not add any elements to the EPP <transfer> query
   command or <transfer> response described in the [RFC5730].








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3.2.  EPP Transform Commands

   EPP provides five commands to transform objects: <create> to create
   an instance of an object, <delete> to delete an instance of an
   object, <renew> to extend the validity period of an object,
   <transfer> to manage object sponsorship changes, and <update> to
   change information associated with an object.

3.2.1.  EPP <create> Command

   This extension defines additional elements to extend the EPP <create>
   command of an object mapping like the EPP domain name mapping
   [RFC5731], EPP host mapping [RFC5732], and EPP contact mapping
   [RFC5733].

   The EPP <create> command provides a transform operation that allows a
   client to create an object.  In addition to the EPP command elements
   described in an object mapping like [RFC5731], the command MAY
   contain a child <verificationCode:encodedSignedCode> element, as
   defined in Section 2.1.2, that identifies the extension namespace for
   the client to provide proof of verification by a Verification Service
   Provider (VSP).  The server MAY support multiple policies for the
   passing of the <verificationCode:encodedSignedCode> element based on
   the client profile, which include:

   required  The client MUST pass a valid
       <verificationCode:encodedSignedCode> element containing the
       required set of verification codes.  If a
       <verificationCode:encodedSignedCode> element is not passed or the
       required set of verification codes is not included, the server
       MUST return an EPP error result code of 2306.  If an invalid
       <verificationCode:encodedSignedCode> element is passed, the
       server MUST return an EPP error result code of 2005.
   optional  The client MAY pass a valid
       <verificationCode:encodedSignedCode> element.  If an invalid
       <verificationCode:encodedSignedCode> element is passed, the
       server MUST return an EPP error result code of 2005.
   not supported  The client MUST NOT pass a
       <verificationCode:encodedSignedCode> element.  If a
       <verificationCode:encodedSignedCode> element is passed, the
       server MUST return an EPP error result code of 2102.

   Example <create> command to create a domain object with a
   verification code:

   C:<?xml version="1.0" encoding="UTF-8" standalone="no"?>
   C:<epp xmlns="urn:ietf:params:xml:ns:epp-1.0">
   C:  <command>



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   C:    <create>
   C:      <domain:create
   C:       xmlns:domain="urn:ietf:params:xml:ns:domain-1.0">
   C:        <domain:name>domain.example</domain:name>
   C:        <domain:registrant>jd1234</domain:registrant>
   C:        <domain:contact type="admin">sh8013</domain:contact>
   C:        <domain:contact type="tech">sh8013</domain:contact>
   C:        <domain:authInfo>
   C:          <domain:pw>2fooBAR</domain:pw>
   C:        </domain:authInfo>
   C:      </domain:create>
   C:    </create>
   C:    <extension>
   C:      <verificationCode:encodedSignedCode
   C:        xmlns:verificationCode=
   C:          "urn:ietf:params:xml:ns:verificationCode-1.0">
   C:        <verificationCode:code>
   C:ICAgICAgPHZlcmlmaWNhdGlvbkNvZGU6c2lnbmVkQ29kZQogICAgICAgIHhtbG5z
   C:OnZlcmlmaWNhdGlvbkNvZGU9CiAgICAgICAgICAidXJuOmlldGY6cGFyYW1zOnht
   C:bDpuczp2ZXJpZmljYXRpb25Db2RlLTEuMCIKICAgICAgICAgIGlkPSJzaWduZWRD
   C:b2RlIj4KICAgCQk8dmVyaWZpY2F0aW9uQ29kZTpjb2RlPjEtYWJjMTIzPC92ZXJp
   C:ZmljYXRpb25Db2RlOmNvZGU+CiAgPFNpZ25hdHVyZSB4bWxucz0iaHR0cDovL3d3
   C:dy53My5vcmcvMjAwMC8wOS94bWxkc2lnIyI+CiAgIDxTaWduZWRJbmZvPgogICAg
   C:PENhbm9uaWNhbGl6YXRpb25NZXRob2QKIEFsZ29yaXRobT0iaHR0cDovL3d3dy53
   C:My5vcmcvMjAwMS8xMC94bWwtZXhjLWMxNG4jIi8+CiAgICA8U2lnbmF0dXJlTWV0
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   C:R0ExVUVDQk1DUTBFeAogRkRBU0JnTlZCQWNUQzB4dmN5QkJibWRsYkdWek1SY3dG
   C:UVlEVlFRS0V3NVdZV3hwWkdGMGIzSWdWRTFEU0RFaAogTUI4R0ExVUVBeE1ZVm1G
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   C:TAogQWRYaXRUV0ZpcGFJR2VhOWxFR0ZNMEw5K0JnN1h6Tm40blZMWG9reUVCM2Jn
   C:UzRzY0c2UXpuWDIzRkdrCiAgIDwvWDUwOUNlcnRpZmljYXRlPgogICA8L1g1MDlE
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   C:b25Db2RlOnNpZ25lZENvZGU+Cg==
   C:        </verificationCode:code>
   C:      </verificationCode:encodedSignedCode>
   C:    </extension>
   C:    <clTRID>ABC-12345</clTRID>
   C:  </command>
   C:</epp>

   This extension does not add any elements to the EPP <create> response
   described in the [RFC5730].

3.2.2.  EPP <delete> Command

   This extension defines additional elements to extend the EPP <delete>
   command and response in the same fashion as defined for the EPP
   <create> Command (Section 3.2.1).







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3.2.3.  EPP <renew> Command

   This extension defines additional elements to extend the EPP <renew>
   command and response in the same fashion as defined for the EPP
   <create> Command (Section 3.2.1).

3.2.4.  EPP <transfer> Command

   This extension defines additional elements to extend the EPP
   <transfer> command and response in the same fashion as defined for
   the EPP <create> Command (Section 3.2.1).

3.2.5.  EPP <update> Command

   This extension defines additional elements to extend the EPP <update>
   command and response in the same fashion as defined for the EPP
   <create> Command (Section 3.2.1).

4.  Formal Syntax

   One schema is presented here that is the EPP Verification Code
   Extension schema.

   The formal syntax presented here is a complete schema representation
   of the object mapping suitable for automated validation of EPP XML
   instances.  The BEGIN and END tags are not part of the schema; they
   are used to note the beginning and ending of the schema for URI
   registration purposes.

4.1.  Verification Code Extension Schema

   BEGIN
   <?xml version="1.0" encoding="UTF-8"?>
   <schema
     targetNamespace=
       "urn:ietf:params:xml:ns:verificationCode-1.0"
     xmlns:verificationCode=
       "urn:ietf:params:xml:ns:verificationCode-1.0"
     xmlns:dsig="http://www.w3.org/2000/09/xmldsig#"
     xmlns="http://www.w3.org/2001/XMLSchema"
     elementFormDefault="qualified">

     <annotation>
       <documentation>
         Extensible Provisioning Protocol v1.0
         Verification Code Extension.
       </documentation>
     </annotation>



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     <import namespace="http://www.w3.org/2000/09/xmldsig#"
       schemaLocation="xmldsig-core-schema.xsd"/>

     <!-- Abstract signed code for substitution -->
     <element name="abstractSignedCode"
       type="verificationCode:abstractSignedCodeType"
       abstract="true"/>

     <!-- Empty type for use in extending for a signed code -->
     <complexType name="abstractSignedCodeType"/>

     <!-- Definition of concrete signed code -->
     <element name="signedCode"
       type="verificationCode:signedCodeType"
       substitutionGroup="verificationCode:abstractSignedCode"/>

     <complexType name="signedCodeType">
       <complexContent>
         <extension base="verificationCode:abstractSignedCodeType">
           <sequence>
             <element name="code"
               type="verificationCode:verificationCodeType"/>
             <element ref="dsig:Signature"/>
           </sequence>
           <attribute name="id" type="ID" use="required"/>
         </extension>
       </complexContent>
     </complexType>

     <simpleType name="verificationCodeValueType">
       <restriction base="token">
           <pattern value="\d+-[A-Za-z0-9]+"/>
       </restriction>
     </simpleType>

     <complexType name="verificationCodeType">
       <simpleContent>
         <extension base=
           "verificationCode:verificationCodeValueType">
           <attribute name="type" type="token"
             use="required"/>
         </extension>
       </simpleContent>
     </complexType>

     <!-- Definition of an encoded signed code -->
     <element name="encodedSignedCode"
       type="verificationCode:encodedSignedCodeListType"/>



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     <complexType name="encodedSignedCodeListType">
       <sequence>
          <element name="code"
             type="verificationCode:encodedSignedCodeType"
             minOccurs="1" maxOccurs="unbounded"/>
       </sequence>
     </complexType>

     <complexType name="encodedSignedCodeType">
       <simpleContent>
         <extension base="token">
           <attribute name="encoding"
             type="token" default="base64"/>
         </extension>
       </simpleContent>
     </complexType>

     <!-- info command extension elements -->
     <element name="info" type="verificationCode:infoType"/>

     <complexType name="infoType">
       <simpleContent>
         <extension base="token">
            <attribute name="profile" type="token"/>
         </extension>
       </simpleContent>
     </complexType>


     <!-- info response extension elements -->
     <element name="infData" type="verificationCode:infDataType"/>

     <complexType name="infDataType">
       <sequence>
         <element name="status"
           type="verificationCode:statusEnum"/>
         <element name="profile"
           type="verificationCode:profileDataType"
           minOccurs="0" maxOccurs="unbounded"/>
       </sequence>
     </complexType>

     <complexType name="profileDataType">
       <sequence>
         <element name="status"
           type="verificationCode:statusEnum"/>
         <element name="missing"
           type="verificationCode:missingCodes"



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           minOccurs="0"/>
         <element name="set"
           type="verificationCode:codesType"
           minOccurs="0"/>
       </sequence>
       <attribute name="name" type="token"/>
     </complexType>

     <simpleType name="statusEnum">
       <restriction base="token">
         <enumeration value="notApplicable"/>
         <enumeration value="nonCompliant"/>
         <enumeration value="pendingCompliance"/>
         <enumeration value="compliant"/>
       </restriction>
     </simpleType>

     <complexType name="missingVerificationCode">
       <simpleContent>
         <extension base="token">
           <attribute name="type" type="token"
             use="required"/>
           <attribute name="due" type="dateTime"
             use="required"/>
         </extension>
       </simpleContent>
     </complexType>

     <complexType name="missingCodes">
       <sequence>
         <element name="code"
           type="verificationCode:missingVerificationCode"
           minOccurs="1" maxOccurs="unbounded"/>
       </sequence>
     </complexType>

     <complexType name="infoVerificationCodeType">
       <simpleContent>
         <extension base="token">
           <attribute name="type" type="token"
             use="required"/>
           <attribute name="date" type="dateTime"
             use="required"/>
         </extension>
       </simpleContent>
     </complexType>

     <complexType name="codesType">



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       <sequence>
         <element name="code"
           type="verificationCode:infoVerificationCodeType"
           minOccurs="1" maxOccurs="unbounded"/>
       </sequence>
     </complexType>

   </schema>
   END

5.  IANA Considerations

5.1.  XML Namespace

   This document uses URNs to describe XML namespaces and XML schemas
   conforming to a registry mechanism described in [RFC3688].

   Registration request for the verificationCode namespace:

      URI: ietf:params:xml:ns:verificationCode-1.0
      Registrant Contact: IESG
      XML: None.  Namespace URIs do not represent an XML specification.

   Registration request for the verificationCode XML schema:

      URI: ietf:params:xml:ns:verificationCode-1.0
      Registrant Contact: IESG
      XML: See the "Formal Syntax" section of this document.

5.2.  EPP Extension Registry

   The EPP extension described in this document should be registered by
   the IANA in the EPP Extension Registry described in [RFC7451].  The
   details of the registration are as follows:

   Name of Extension: "Verification Code Extension for the Extensible
   Provisioning Protocol (EPP)"

   Document status: Standards Track

   Reference: (insert reference to RFC version of this document)

   Registrant Name and Email Address: IESG, <iesg@ietf.org>

   TLDs: Any

   IPR Disclosure: None




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   Status: Active

   Notes: None

6.  Implementation Status

   Note to RFC Editor: Please remove this section and the reference to
   RFC 7942 [RFC7942] before publication.

   This section records the status of known implementations of the
   protocol defined by this specification at the time of posting of this
   Internet-Draft, and is based on a proposal described in RFC 7942
   [RFC7942].  The description of implementations in this section is
   intended to assist the IETF in its decision processes in progressing
   drafts to RFCs.  Please note that the listing of any individual
   implementation here does not imply endorsement by the IETF.
   Furthermore, no effort has been spent to verify the information
   presented here that was supplied by IETF contributors.  This is not
   intended as, and must not be construed to be, a catalog of available
   implementations or their features.  Readers are advised to note that
   other implementations may exist.

   According to RFC 7942 [RFC7942], "this will allow reviewers and
   working groups to assign due consideration to documents that have the
   benefit of running code, which may serve as evidence of valuable
   experimentation and feedback that have made the implemented protocols
   more mature.  It is up to the individual working groups to use this
   information as they see fit".

6.1.  Verisign EPP SDK

   Organization: Verisign Inc.

   Name: Verisign EPP SDK

   Description: The Verisign EPP SDK includes both a full client
   implementation and a full server stub implementation of draft-ietf-
   regext-verificationcode.

   Level of maturity: Production

   Coverage: All aspects of the protocol are implemented.

   Licensing: GNU Lesser General Public License

   Contact: jgould@verisign.com





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   URL: https://www.verisign.com/en_US/channel-resources/domain-
   registry-products/epp-sdks

6.2.  Net::DRI

   Organization: Dot and Co

   Name: Net::DRI

   Description: Net::DRI implements the client-side of draft-ietf-
   regext-verificationcode.

   Level of maturity: Production

   Coverage: All client-side aspects of the protocol are implemented.

   Licensing: GNU Lesser General Public License

   Contact: netdri@dotandco.com

7.  Security Considerations

   The mapping extension described in this document is based on the
   security services described by EPP [RFC5730] and protocol layers used
   by EPP.  The security considerations described in these other
   specifications apply to this specification as well.

   XML Signature [W3C.CR-xmldsig-core2-20120124] is used in this
   extension to verify that the Verification Code originated from a
   trusted Verification Service Provider (VSP) and that it wasn't
   tampered with in transit from the VSP to the client to the server.
   To support multiple VSP keys, the VSP certificate chain MUST be
   included in the <X509Certificate> elements of the Signed Code
   (Section 2.1.1) and MUST chain up and be verified by the server
   against a set of trusted certificates.

   It is RECOMMENDED that signed codes do not include white-spaces
   between the XML elements in order to mitigate risks of invalidating
   the digital signature when transferring of signed codes between
   applications takes place.

   Use of XML canonicalization SHOULD be used when generating the signed
   code.  SHA256/RSA-SHA256 SHOULD be used for digesting and signing.
   The size of the RSA key SHOULD be at least 2048 bits.







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8.  References

8.1.  Normative References

   [RFC2045]  Freed, N. and N. Borenstein, "Multipurpose Internet Mail
              Extensions (MIME) Part One: Format of Internet Message
              Bodies", RFC 2045, DOI 10.17487/RFC2045, November 1996,
              <https://www.rfc-editor.org/info/rfc2045>.

   [RFC2119]  Bradner, S., "Key words for use in RFCs to Indicate
              Requirement Levels", BCP 14, RFC 2119,
              DOI 10.17487/RFC2119, March 1997, <https://www.rfc-
              editor.org/info/rfc2119>.

   [RFC3688]  Mealling, M., "The IETF XML Registry", BCP 81, RFC 3688,
              DOI 10.17487/RFC3688, January 2004, <https://www.rfc-
              editor.org/info/rfc3688>.

   [RFC5234]  Crocker, D., Ed. and P. Overell, "Augmented BNF for Syntax
              Specifications: ABNF", STD 68, RFC 5234,
              DOI 10.17487/RFC5234, January 2008, <https://www.rfc-
              editor.org/info/rfc5234>.

   [RFC5730]  Hollenbeck, S., "Extensible Provisioning Protocol (EPP)",
              STD 69, RFC 5730, DOI 10.17487/RFC5730, August 2009,
              <https://www.rfc-editor.org/info/rfc5730>.

   [RFC5731]  Hollenbeck, S., "Extensible Provisioning Protocol (EPP)
              Domain Name Mapping", STD 69, RFC 5731,
              DOI 10.17487/RFC5731, August 2009, <https://www.rfc-
              editor.org/info/rfc5731>.

   [RFC5732]  Hollenbeck, S., "Extensible Provisioning Protocol (EPP)
              Host Mapping", STD 69, RFC 5732, DOI 10.17487/RFC5732,
              August 2009, <https://www.rfc-editor.org/info/rfc5732>.

   [RFC5733]  Hollenbeck, S., "Extensible Provisioning Protocol (EPP)
              Contact Mapping", STD 69, RFC 5733, DOI 10.17487/RFC5733,
              August 2009, <https://www.rfc-editor.org/info/rfc5733>.

   [RFC7942]  Sheffer, Y. and A. Farrel, "Improving Awareness of Running
              Code: The Implementation Status Section", BCP 205,
              RFC 7942, DOI 10.17487/RFC7942, July 2016,
              <https://www.rfc-editor.org/info/rfc7942>.







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   [W3C.CR-xmldsig-core2-20120124]
              Cantor, S., Roessler, T., Eastlake, D., Yiu, K., Reagle,
              J., Solo, D., Datta, P., and F. Hirsch, "XML Signature
              Syntax and Processing Version 2.0", World Wide Web
              Consortium CR CR-xmldsig-core2-20120124, January 2012,
              <http://www.w3.org/TR/2012/CR-xmldsig-core2-20120124>.

8.2.  Informative References

   [RFC7451]  Hollenbeck, S., "Extension Registry for the Extensible
              Provisioning Protocol", RFC 7451, DOI 10.17487/RFC7451,
              February 2015, <https://www.rfc-editor.org/info/rfc7451>.

   [RFC8174]  Leiba, B., "Ambiguity of Uppercase vs Lowercase in RFC
              2119 Key Words", BCP 14, RFC 8174, DOI 10.17487/RFC8174,
              May 2017, <https://www.rfc-editor.org/info/rfc8174>.

Appendix A.  Acknowledgements

   The authors wish to thank the following persons for their feedback
   and suggestions:

   o  Gurshabad Grover
   o  Rick Wilhelm
   o  John Levine

Appendix B.  Change History

B.1.  Change from 00 to 01

   1.  Fixed pendingComplaince and complaint to pendingCompliance and
       compliant in text.
   2.  Fixed verificaton to verification.

B.2.  Change from 01 to 02

   1.  Added support for the notApplicable status value.

B.3.  Change from 02 to 03

   1.  Added regular expression pattern for the format of the
       verification code token value in the XML schema.

B.4.  Change from 03 to 04

   1.  Ping update.





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B.5.  Change from 04 to REGEXT 00

   1.  Changed to regext working group draft by changing draft-gould-
       eppext-verificationcode to draft-ietf-regext-verificationcode.

B.6.  Change from REGEXT 00 to REGEXT 01

   1.  Ping update.

B.7.  Change from REGEXT 01 to REGEXT 02

   1.  Ping update.

B.8.  Change from REGEXT 02 to REGEXT 03

   1.  Moved RFC 7451 to an informational reference based on a check
       done by the Idnits Tool.
   2.  Replaced the IANA Registrant Contact to be "IESG".

B.9.  Change from REGEXT 03 to REGEXT 04

   1.  Added the Implementation Status section.
   2.  Revised the sentence "The data verified by the VSP MUST be stored
       by the VSP along with the generated verification code to address
       any compliance issues." to "The VSP MUST store the proof of
       verification and the generated verification code; and MAY store
       the verified data.", and added text to the Security
       Considerations section associated with storing the verification
       data, based on feedback from Gurshabad Grover.

B.10.  Change from REGEXT 04 to REGEXT 05

   1.  Removed the "The Verification Service Provider (VSP) MUST store
       the verification data in compliance with the applicable privacy
       laws and regulations." sentence from the Security Considerations,
       based on feedback from Rick Wilhelm and agreement from Gurshabad
       Grover.
   2.  Added the sentence "It is up to server policy what action to take
       if the verification code type is not set by the grace period." to
       section 2.2 "Verification Profile", to clarify what happens when
       the verification code grace period expires.  This is based on an
       issue raised by Gurshabad Grover at the IETF-103 REGEXT meeting.

B.11.  Change from REGEXT 05 to REGEXT 06

   1.  Removed the "The VSP MUST store the proof of verification and the
       generated verification code; and MAY store the verified data."




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       sentence from the Introduction, based on feedback from John
       Levine.

Author's Address

   James Gould
   VeriSign, Inc.
   12061 Bluemont Way
   Reston, VA  20190
   US

   Email: jgould@verisign.com
   URI:   http://www.verisign.com






































Gould                     Expires July 14, 2019                [Page 38]
