Network Working Group                                 P. M. Hallam-Baker
Internet-Draft                                      ThresholdSecrets.com
Intended status: Informational                         20 September 2021
Expires: 24 March 2022


            Mathematical Mesh 3.0 Part V: Protocol Reference
                   draft-hallambaker-mesh-protocol-10

Abstract

   The Mathematical Mesh 'The Mesh' is an end-to-end secure
   infrastructure that facilitates the exchange of configuration and
   credential data between multiple user devices.  The core protocols of
   the Mesh are described with examples of common use cases and
   reference data.

   [Note to Readers]

   Discussion of this draft takes place on the MATHMESH mailing list
   (mathmesh@ietf.org), which is archived at
   https://mailarchive.ietf.org/arch/search/?email_list=mathmesh.

   This document is also available online at
   http://mathmesh.com/Documents/draft-hallambaker-mesh-protocol.html.

Status of This Memo

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

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   This Internet-Draft will expire on 24 March 2022.

Copyright Notice

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




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

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   4
   2.  Definitions . . . . . . . . . . . . . . . . . . . . . . . . .   6
     2.1.  Requirements Language . . . . . . . . . . . . . . . . . .   6
     2.2.  Defined Terms . . . . . . . . . . . . . . . . . . . . . .   6
     2.3.  Related Specifications  . . . . . . . . . . . . . . . . .   6
     2.4.  Implementation Status . . . . . . . . . . . . . . . . . .   6
   3.  Mesh Protocols  . . . . . . . . . . . . . . . . . . . . . . .   6
   4.  Mesh Service  . . . . . . . . . . . . . . . . . . . . . . . .   7
     4.1.  Data Model  . . . . . . . . . . . . . . . . . . . . . . .   7
     4.2.  Partitioning  . . . . . . . . . . . . . . . . . . . . . .   8
   5.  Protocol Bindings . . . . . . . . . . . . . . . . . . . . . .   8
   6.  Mesh Service Operations . . . . . . . . . . . . . . . . . . .   9
     6.1.  Service Description . . . . . . . . . . . . . . . . . . .   9
     6.2.  Account Management  . . . . . . . . . . . . . . . . . . .  11
       6.2.1.  Bind Account  . . . . . . . . . . . . . . . . . . . .  11
       6.2.2.  Unbind Account  . . . . . . . . . . . . . . . . . . .  26
       6.2.3.  Account Recovery and Transfer.  . . . . . . . . . . .  26
     6.3.  Persistence Store Management  . . . . . . . . . . . . . .  26
       6.3.1.  Status  . . . . . . . . . . . . . . . . . . . . . . .  27
       6.3.2.  Download  . . . . . . . . . . . . . . . . . . . . . .  28
       6.3.3.  Transact  . . . . . . . . . . . . . . . . . . . . . .  31
     6.4.  Device Connection . . . . . . . . . . . . . . . . . . . .  32
       6.4.1.  Connect . . . . . . . . . . . . . . . . . . . . . . .  33
       6.4.2.  Complete  . . . . . . . . . . . . . . . . . . . . . .  38
     6.5.  Publication . . . . . . . . . . . . . . . . . . . . . . .  47
       6.5.1.  Claim Transaction . . . . . . . . . . . . . . . . . .  48
       6.5.2.  PollClaim Transaction . . . . . . . . . . . . . . . .  51
     6.6.  Cryptographic . . . . . . . . . . . . . . . . . . . . . .  52
       6.6.1.  Generate Key Shares . . . . . . . . . . . . . . . . .  54
       6.6.2.  Threshold Sign  . . . . . . . . . . . . . . . . . . .  55
     6.7.  Messaging . . . . . . . . . . . . . . . . . . . . . . . .  55
       6.7.1.  Sender. . . . . . . . . . . . . . . . . . . . . . . .  55
       6.7.2.  Outbound Service  . . . . . . . . . . . . . . . . . .  55
       6.7.3.  Inbound Service . . . . . . . . . . . . . . . . . . .  56
       6.7.4.  Recipient . . . . . . . . . . . . . . . . . . . . . .  56
   7.  Message Interactions  . . . . . . . . . . . . . . . . . . . .  57
     7.1.  Message PIN Interaction . . . . . . . . . . . . . . . . .  57
       7.1.1.  Registration  . . . . . . . . . . . . . . . . . . . .  57
       7.1.2.  Authentication  . . . . . . . . . . . . . . . . . . .  58
       7.1.3.  Validation  . . . . . . . . . . . . . . . . . . . . .  58



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       7.1.4.  Example . . . . . . . . . . . . . . . . . . . . . . .  59
     7.2.  Completion Interaction  . . . . . . . . . . . . . . . . .  60
     7.3.  Contact Exchange Interaction  . . . . . . . . . . . . . .  60
       7.3.1.  Remote  . . . . . . . . . . . . . . . . . . . . . . .  61
       7.3.2.  PIN . . . . . . . . . . . . . . . . . . . . . . . . .  63
       7.3.3.  EARL  . . . . . . . . . . . . . . . . . . . . . . . .  64
     7.4.  Group Invitation  . . . . . . . . . . . . . . . . . . . .  64
     7.5.  Confirmation Interaction  . . . . . . . . . . . . . . . .  66
   8.  Device Connection Interactions  . . . . . . . . . . . . . . .  67
     8.1.  Witness/PIN Authenticated . . . . . . . . . . . . . . . .  69
       8.1.1.  Phase 1:  . . . . . . . . . . . . . . . . . . . . . .  70
       8.1.2.  Phase 2:  . . . . . . . . . . . . . . . . . . . . . .  70
       8.1.3.  Phase 3:  . . . . . . . . . . . . . . . . . . . . . .  73
       8.1.4.  Phase 4 . . . . . . . . . . . . . . . . . . . . . . .  82
     8.2.  Preconfigured (Static QR Code)  . . . . . . . . . . . . .  83
       8.2.1.  Phase 1 . . . . . . . . . . . . . . . . . . . . . . .  84
       8.2.2.  Phase 2 & 3 . . . . . . . . . . . . . . . . . . . . .  86
       8.2.3.  Phase 4 . . . . . . . . . . . . . . . . . . . . . . .  87
       8.2.4.  Phase 5 . . . . . . . . . . . . . . . . . . . . . . .  87
   9.  Protocol Schema . . . . . . . . . . . . . . . . . . . . . . .  87
     9.1.  Request Messages  . . . . . . . . . . . . . . . . . . . .  87
       9.1.1.  Message: MeshRequest  . . . . . . . . . . . . . . . .  87
       9.1.2.  Message: MeshRequestUser  . . . . . . . . . . . . . .  87
     9.2.  Response Messages . . . . . . . . . . . . . . . . . . . .  88
       9.2.1.  Message: MeshResponse . . . . . . . . . . . . . . . .  88
     9.3.  Imported Objects  . . . . . . . . . . . . . . . . . . . .  88
     9.4.  Common Structures . . . . . . . . . . . . . . . . . . . .  88
       9.4.1.  Structure: KeyValue . . . . . . . . . . . . . . . . .  88
       9.4.2.  Structure: ConstraintsSelect  . . . . . . . . . . . .  88
       9.4.3.  Structure: ConstraintsData  . . . . . . . . . . . . .  89
       9.4.4.  Structure: PolicyAccount  . . . . . . . . . . . . . .  89
       9.4.5.  Structure: ContainerStatus  . . . . . . . . . . . . .  90
       9.4.6.  Structure: ContainerUpdate  . . . . . . . . . . . . .  90
     9.5.  Transaction: Hello  . . . . . . . . . . . . . . . . . . .  90
       9.5.1.  Message: MeshHelloResponse  . . . . . . . . . . . . .  90
     9.6.  Transaction: BindAccount  . . . . . . . . . . . . . . . .  91
       9.6.1.  Message: BindRequest  . . . . . . . . . . . . . . . .  91
       9.6.2.  Message: BindResponse . . . . . . . . . . . . . . . .  91
     9.7.  Transaction: UnbindAccount  . . . . . . . . . . . . . . .  91
       9.7.1.  Message: UnbindRequest  . . . . . . . . . . . . . . .  92
       9.7.2.  Message: UnbindResponse . . . . . . . . . . . . . . .  92
     9.8.  Transaction: Connect  . . . . . . . . . . . . . . . . . .  92
       9.8.1.  Message: ConnectRequest . . . . . . . . . . . . . . .  92
       9.8.2.  Message: ConnectResponse  . . . . . . . . . . . . . .  92
     9.9.  Transaction: Complete . . . . . . . . . . . . . . . . . .  93
       9.9.1.  Message: CompleteRequest  . . . . . . . . . . . . . .  93
       9.9.2.  Message: CompleteResponse . . . . . . . . . . . . . .  93
     9.10. Transaction: Status . . . . . . . . . . . . . . . . . . .  93



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       9.10.1.  Message: StatusRequest . . . . . . . . . . . . . . .  93
       9.10.2.  Message: StatusResponse  . . . . . . . . . . . . . .  93
     9.11. Transaction: Download . . . . . . . . . . . . . . . . . .  94
       9.11.1.  Message: DownloadRequest . . . . . . . . . . . . . .  94
       9.11.2.  Message: DownloadResponse  . . . . . . . . . . . . .  94
     9.12. Transaction: Transact . . . . . . . . . . . . . . . . . .  94
       9.12.1.  Message: TransactRequest . . . . . . . . . . . . . .  95
       9.12.2.  Message: TransactResponse  . . . . . . . . . . . . .  95
       9.12.3.  Structure: EntryResponse . . . . . . . . . . . . . .  95
     9.13. Transaction: Post . . . . . . . . . . . . . . . . . . . .  96
       9.13.1.  Message: PostRequest . . . . . . . . . . . . . . . .  96
       9.13.2.  Message: PostResponse  . . . . . . . . . . . . . . .  96
     9.14. Transaction: Claim  . . . . . . . . . . . . . . . . . . .  96
       9.14.1.  Message: ClaimRequest  . . . . . . . . . . . . . . .  96
       9.14.2.  Message: ClaimResponse . . . . . . . . . . . . . . .  97
     9.15. Transaction: PollClaim  . . . . . . . . . . . . . . . . .  97
       9.15.1.  Message: PollClaimRequest  . . . . . . . . . . . . .  97
       9.15.2.  Message: PollClaimResponse . . . . . . . . . . . . .  97
       9.15.3.  Structure: CryptographicOperation  . . . . . . . . .  97
       9.15.4.  Structure: CryptographicOperationSign  . . . . . . .  97
       9.15.5.  Structure: CryptographicOperationKeyAgreement  . . .  98
       9.15.6.  Structure: CryptographicOperationGenerate  . . . . .  98
       9.15.7.  Structure: CryptographicOperationShare . . . . . . .  98
       9.15.8.  Structure: CryptographicResult . . . . . . . . . . .  98
       9.15.9.  Structure: CryptographicResultKeyAgreement . . . . .  98
       9.15.10. Structure: CryptographicResultShare  . . . . . . . .  98
     9.16. Transaction: Operate  . . . . . . . . . . . . . . . . . .  98
       9.16.1.  Message: OperateRequest  . . . . . . . . . . . . . .  98
       9.16.2.  Message: OperateResponse . . . . . . . . . . . . . .  99
   10. Security Considerations . . . . . . . . . . . . . . . . . . .  99
   11. IANA Considerations . . . . . . . . . . . . . . . . . . . . .  99
   12. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  99
   13. Normative References  . . . . . . . . . . . . . . . . . . . .  99
   14. Informative References  . . . . . . . . . . . . . . . . . . . 100

1.  Introduction

   This document describes the Mesh Service protocol supported by Mesh
   Services, an account-based protocol that facilitates exchange of data
   between devices connected to a Mesh profile and between Mesh
   accounts.

   Mesh Service Accounts support the following services:

   *  Provides the master persistence store for the Catalogs and Spools
      associated with the account.





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   *  Enables synchronization of Catalogs and Spools with connected
      devices.

   *  Enforces access control on inbound Mesh Messages from other users
      and other Mesh Services.

   *  Authenticates outbound Mesh Messages, certifying that they comply
      with abuse mitigation policies.

   A Mesh Profile MAY be bound to multiple Mesh Service Accounts at the
   same time but only one Mesh Service Account is considered to be
   authoritative at a time.  Users may add or remove Mesh Service
   Accounts and change the account designated as authoritative at any
   time.

   The Mesh Services are build from a very small set of primitives which
   provide a surprisingly extensive set of capabilities.  These
   primitives are:

   "Hello"  Describes the features and options provided by the service
      and provides a 'null' transaction which MAY be used to establish
      an authentication ticket without performing any action,

   CreateAccount, DeleteAccount  Manage the creation and deletion of
      accounts at the service.

   Status, Download, "Upload"  Support synchronization of Mesh
      containers between the service (Master) and the connected devices
      (Replicas).

   Connect  Initiate the process of connecting a device to a Mesh
      profile from the device itself.

   Post  Request that a Mesh Message be transferred to one or more Mesh
      Accounts.

   Although these functions could in principle be used to replace many
   if not most existing Internet application protocols, the principal
   value of any communication protocol lies in the size of the audience
   it allows them to communicate with.  Thus, while the Mesh Messaging
   service is designed to support efficient and reliable transfer of
   messages ranging in size from a few bytes to multiple terabytes, the
   near-term applications of these services will be to applications that
   are not adequately supported by existing protocols if at all.







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2.  Definitions

   This section presents the related specifications and standard, the
   terms that are used as terms of art within the documents and the
   terms used as requirements language.

2.1.  Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in [RFC2119].

2.2.  Defined Terms

   The terms of art used in this document are described in the _Mesh
   Architecture Guide_ [draft-hallambaker-mesh-architecture].

2.3.  Related Specifications

   The architecture of the Mathematical Mesh is described in the _Mesh
   Architecture Guide_ [draft-hallambaker-mesh-architecture].  The Mesh
   documentation set and related specifications are described in this
   document.

2.4.  Implementation Status

   The implementation status of the reference code base is described in
   the companion document [draft-hallambaker-mesh-developer].

3.  Mesh Protocols

   The Mesh specifies two separate types of protocol interactions:

   Mesh Service Protocol  A synchronous protocol supporting interactions
      between devices and a Mesh Service Host and between Mesh Service
      hosts.

   Mesh Messaging Protocol  An asynchronous protocol that supports
      interactions between devices connected to the same account and
      between accounts.

   The Mesh Messaging Protocol uses the Mesh Service Protocol as
   transport.  The Mesh Service Protocol in turn is supported by either
   the HTTPS binding over TCP or by the Mesh Datagram binding over UDP.

   (Artwork only available as svg: No external link available, see
   draft-hallambaker-mesh-protocol-10.html for artwork.)




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                        Figure 1: Protocol Layering

   Mesh Services MUST support the HTTPS binding and MAY support the Mesh
   Datagram binding.

4.  Mesh Service

   A Mesh Service is a minimally trusted service.  In particular a user
   does not need to trust a Mesh service to protect the confidentiality
   or integrity of most data stored in the account catalogs and spools.

   Unless the use of the Mesh Service is highly restricted, a user does
   need to trust the Mesh Service in certain respects:

   Data Loss  A service could refuse to respond to requests to download
      data.

   Integrity (Stale Data)  The use of Merkle Trees limits but does not
      eliminate the ability of a Mesh Service to respond to requests
      with stale data.

   Messaging  A service could reject requests to post messages to or
      accept messages from other mesh users.

      This risk is a necessary consequence of the fact that the Mesh
      Service Provider is accountable to other Mesh Service Providers
      for abuse originating from their service.

   Traffic analysis  A Mesh Service has knowledge of the number of Mesh
      Messages being sent and received by its users and the addresses to
      which they are being sent to or received from.

   The need to trust the Mesh Service in these respects is mitigated by
   accountability and the user's ability to change Mesh Service
   providers at any time they choose with minimal inconvenience.

   It is possible that some of these risks will be reduced in future
   versions of the Mesh Service Protocol but it is highly unlikely that
   these can be eliminated entirely without compromising practicality or
   efficiency.

4.1.  Data Model

   The design of the Mesh Service model followed a quasi-formal approach
   in which the system was reduced to schemas which could in principle
   be rendered in a formal development method but without construction
   of proofs.




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   Like the contents of Mesh Accounts, a Mesh Service may be represented
   by a collection of catalogs and spools, for example:

   Account Catalog  Contains the account entries.

   Incident Spool  Reports of potential abuse

   Backup of the service MAY be implemented using the same container
   synchronization mechanism used to synchronize account catalogs and
   spools.

4.2.  Partitioning

   Mesh Services supporting a large number of accounts or large activity
   volume MAY partition the account catalog between one or more hosts
   using the usual tiered service model in which a front-end server
   receives traffic for any account hosted at the server and routes the
   request to the back-end service that provides the persistence store
   for that account.

   In addition, the Mesh Service Protocol supports a 'direct connection'
   partitioning model in which devices are given a DNS name which MAY
   allow for direct connection to the persistence host or to a front-end
   service offering service that is in some way specific to that
   account.

5.  Protocol Bindings

   The protocol binding maps the abstract protocol definition specified
   in this document to the network protocol format.

   *  Discovery of network services.

   *  Construction of the payload data by serializing request and
      response messages.

   *  Authentication of the payload data.

   *  Confidentiality controls to protect against traffic analysis

   Currently only one protocol binding is specified: JSON-BCD
   Application Binding [draft-hallambaker-jsonbcd] over Reliable User
   Datagram (RUD) [draft-hallambaker-mesh-rud].

   *JSON-BCD Application Binding* specifies the means by which data
   types such as 'integer' and 'datetime' etc. given in this document
   are serialized using JSON/JSON-B encoding.




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   *Reliable User Datagram* offers a presentation layer over a choice of
   HTTP or UDP transport.

6.  Mesh Service Operations

   The Mesh Service operations are divided into the following functional
   groups:

   Service Description  Describes the service.

   Account Management  Operations used to create, reclaim, and delete
      accounts.

   Persistence Store Management  Operations used to synchronize
      persistence store data across connected devices.  [May be replaced
      in a future revision]

   Device Connection  Operations used by devices requesting connection
      to the account.

   Publication  Operations allowing a watched document to be posted to
      the service and claims made on the document returned to a device.

   Cryptographic  Cryptographic operations, including threshold
      operations performed by the service.

   Messaging  Exchange of messages between Mesh Services.

6.1.  Service Description

   The Hello transaction is used to determine the features supported by
   the service and obtain the service profile.

   The request payload only specifies that is is a request for the
   service description:

   {
     "HelloRequest":{}}

   The response payload describes the service and the host providing
   that service:

   {
     "MeshHelloResponse":{
       "Status":201,
       "Version":{
         "Major":3,
         "Minor":0,



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         "Encodings":[{
             "ID":["application/json"
               ]}
           ]},
       "EnvelopedProfileService":[{
           "EnvelopeId":"MCZ3-M2PS-SFXP-4L6X-RKGP-MKJA-R5WK",
           "dig":"S512",
           "ContentMetaData":"ewogICJVbmlxdWVJZCI6ICJNQ1ozLU0yUFMtU0
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     dWJsaWMiOiAiekc3d0VWcl95b2UxZWRIc084TjBTZHpldTFZM3phbkkzRU9rWVNCc
     WpXcU1KQmtYSHY1XwogIHBTa1BnT1VaaEViZjNoYV8yZmMzU080QSJ9fX0sCiAgIC
     AiU2VydmljZVNpZ25hdHVyZSI6IHsKICAgICAgIlVkZiI6ICJNQlVULUlQQlotUlp
     ESS1CTVNTLVZUTFMtTDVHUy1OMlBDIiwKICAgICAgIlB1YmxpY1BhcmFtZXRlcnMi
     OiB7CiAgICAgICAgIlB1YmxpY0tleUVDREgiOiB7CiAgICAgICAgICAiY3J2IjogI
     kVkNDQ4IiwKICAgICAgICAgICJQdWJsaWMiOiAiVDdDX2xfOURhRnZRNzNGUjk4dS
     1HdGRGVWMxdWQ1bFd6WXhZNS11TkZhQVFjUGtUdmJKUwogIHlqVGVYWXVWQzRWMFV
     jelNPbjlPbEpxQSJ9fX19fQ",
         {
           "signatures":[{
               "alg":"S512",
               "kid":"MCZ3-M2PS-SFXP-4L6X-RKGP-MKJA-R5WK",
               "signature":"35JI1R3uB5lt3qDkIyD5JPNTRtaa4Jzyu5EMW5uk
     Z1seFoi6ph3h4qWb9aXEm_fJo-gERJTCEsKA2fa5WbP35NPF8bH6NCvVfWs-cdlCB
     PpJcw9btz1DEU3LjDsZinva--qe9j1JHV_aUQg9YuYMKy8A"}
             ],
           "PayloadDigest":"Ort3czll0X2Onn-pKQs2e8o9H0sekQO45Cgzv9io
     mG1MwNCptdzZOz-RVS8RX7T0kDjfejmC9cu_-56VxBmTSg"}
         ]}}






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   The current revision of the specification is designed for small scale
   deployments in which the service is provided by a single host.  The
   approach will require revision in future versions to fully support a
   service being provided by multiple hosts with accounts being
   transferred between the hosts to allow balancing of load.

6.2.  Account Management

   There are three account management operations:

   BindAccount  Create an account bound to a service address.

   UnbindAccount  Delete an account bound to a service address

   RecoverAccount  [TBS] Reclaim an account using a recovered primary
      secret.

   The BindAccount operation is used to create User and Group accounts.
   Currently, these account types are distinct.  This may change in
   future releases.

6.2.1.  Bind Account

   A User Account is bound to a Mesh Service by completing a
   "BindAccount" operation with the service.

   The "BindRequest" message specifies the account address and
   "ProfileUser"of the account to be serviced.

   The "BindAccount" transaction is unique in that it can fail to
   complete for reasons that are outside the scope of the Mesh
   specifications.  Creation of an account might require payment to be
   made or authentication of the user's credentials.  It is thus quite
   normal for the result of a CreateRequest to be the account being
   created in an 'on hold' state which can only be changed out of band.

   If the request is at least partially successful, a BindResponse
   message is returned.  In the case of partial success, a description
   of the request status and link to a Web page providing further
   details MAY be returned.

   The request payload contains all the information needed to create the
   account:

   *  The account address

   *  The account profile




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   *  Initialization data for the persistence stores.

   In order for the account to be usable, the initialization data MUST
   include access control entries authorizing at least one device to
   administer the account.

   Future: It might be better to establish a separate entry for a
   temporary access key that can be used during the initialization of
   the account and then deleted.  This might allow for more consistency
   between Bind / Recover / Transfer operations.

   Alice requests creation of the account alice@example.com.  The
   request payload is:

   {
     "BindRequest":{
       "AccountAddress":"alice@example.com",
       "EnvelopedProfileAccount":[{
           "EnvelopeId":"MC6L-GFYJ-7EOP-2OWN-24ZJ-4RC7-EXTW",
           "dig":"S512",
           "ContentMetaData":"ewogICJVbmlxdWVJZCI6ICJNQzZMLUdGWUotN0
     VPUC0yT1dOLTI0WkotNFJDNy1FWFRXIiwKICAiTWVzc2FnZVR5cGUiOiAiUHJvZml
     sZVVzZXIiLAogICJjdHkiOiAiYXBwbGljYXRpb24vbW1tL29iamVjdCIsCiAgIkNy
     ZWF0ZWQiOiAiMjAyMS0wOS0yMFQxODoxNToyMloifQ"},
         "ewogICJQcm9maWxlVXNlciI6IHsKICAgICJQcm9maWxlU2lnbmF0dXJlIj
     ogewogICAgICAiVWRmIjogIk1DNkwtR0ZZSi03RU9QLTJPV04tMjRaSi00UkM3LUV
     YVFciLAogICAgICAiUHVibGljUGFyYW1ldGVycyI6IHsKICAgICAgICAiUHVibGlj
     S2V5RUNESCI6IHsKICAgICAgICAgICJjcnYiOiAiRWQ0NDgiLAogICAgICAgICAgI
     lB1YmxpYyI6ICJSTHNrbTRnVzZrQm5aS3dMMlBDQkF1aHJyaXVBU1g5X2lZUkt4UT
     UyRFN0V0dsT2wydWdFCiAgeVAzdTZBVEM1WW1JOFU5TXFyT1cxTW9BIn19fSwKICA
     gICJBY2NvdW50QWRkcmVzcyI6ICJhbGljZUBleGFtcGxlLmNvbSIsCiAgICAiU2Vy
     dmljZVVkZiI6ICJNQ1ozLU0yUFMtU0ZYUC00TDZYLVJLR1AtTUtKQS1SNVdLIiwKI
     CAgICJBY2NvdW50RW5jcnlwdGlvbiI6IHsKICAgICAgIlVkZiI6ICJNRFFZLUo3Mk
     EtVlBBTy1XRE9ELUdZWTctNFpaNS1QTFZMIiwKICAgICAgIlB1YmxpY1BhcmFtZXR
     lcnMiOiB7CiAgICAgICAgIlB1YmxpY0tleUVDREgiOiB7CiAgICAgICAgICAiY3J2
     IjogIlg0NDgiLAogICAgICAgICAgIlB1YmxpYyI6ICJJZTJtOTRzY21qN05yX1lxT
     TE1U3h0R2tmbkJMWWxUa25rSWVsVlhxYXJpSUF1el92QjJICiAgRHFNSElnM1otUE
     tpWEZlcVVqTDRnTmtBIn19fSwKICAgICJBZG1pbmlzdHJhdG9yU2lnbmF0dXJlIjo
     gewogICAgICAiVWRmIjogIk1EUFktQUI2Mi1STEwyLUZEWkYtR0hZQi1MUzJHLUhN
     WlgiLAogICAgICAiUHVibGljUGFyYW1ldGVycyI6IHsKICAgICAgICAiUHVibGljS
     2V5RUNESCI6IHsKICAgICAgICAgICJjcnYiOiAiRWQ0NDgiLAogICAgICAgICAgIl
     B1YmxpYyI6ICIwZ3JnTFRFNDljWlF6SURkT2k1ZjRsSXgzT2xsZFBqOVA3dUNzcU0
     wWmdLWHJHNnVBWHAtCiAgUWg3ZUdxOE5WNkRQQjBib3YzX1BZSUlBIn19fSwKICAg
     ICJBY2NvdW50QXV0aGVudGljYXRpb24iOiB7CiAgICAgICJVZGYiOiAiTUNaQi1YT
     VdNLUtVVlAtUFpaSC1CV1RRLUY0QVYtT0dOUCIsCiAgICAgICJQdWJsaWNQYXJhbW
     V0ZXJzIjogewogICAgICAgICJQdWJsaWNLZXlFQ0RIIjogewogICAgICAgICAgImN
     ydiI6ICJYNDQ4IiwKICAgICAgICAgICJQdWJsaWMiOiAidzE0OURtZ2RlOXNwaGJI
     aWdIVkQ1czFiZlppa2l4ZzNUTEtBRzNWZ2pKZTRETUFWRVJCcwogIE1JbTBBY19nR



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     VZvS29yb1gxdEdFRkowQSJ9fX0sCiAgICAiQWNjb3VudFNpZ25hdHVyZSI6IHsKIC
     AgICAgIlVkZiI6ICJNQ1VNLVNRMzUtWkpVUS1UTVRLLUhCNFgtNTdRUS1ZSzJaIiw
     KICAgICAgIlB1YmxpY1BhcmFtZXRlcnMiOiB7CiAgICAgICAgIlB1YmxpY0tleUVD
     REgiOiB7CiAgICAgICAgICAiY3J2IjogIkVkNDQ4IiwKICAgICAgICAgICJQdWJsa
     WMiOiAibUR5cDZtTGlSYXRPWGlCdHg5YlZabTJiaHBQaXFtVEJMdG1WeHpwOWRCTW
     lVWl9YOElkdAogIHY1MUJvcFcycWF5blJ1LWxFNU1WYW5LQSJ9fX19fQ",
         {
           "signatures":[{
               "alg":"S512",
               "kid":"MC6L-GFYJ-7EOP-2OWN-24ZJ-4RC7-EXTW",
               "signature":"aeCuTY0X-J9_L6HGafZKbg5ZueP6PjoydfQDXB28
     B0CpGfqhPjTc6bjLF-vZWzSV4wZ9wotFvXyAR_QRXW7EtpbRz4s2j-bdzGR6z0jzJ
     GnFWaxUYfAzCoFUHfhUDzJTthMNkQiJ-sUyRyriqaF0HjUA"}
             ],
           "PayloadDigest":"ZPrAcmAuks4uOaLyaHIyrISbFbCuNwXI3h7IVDB4
     hzyitFAsVEg8G5QukhJexWuntd_8f4VwQaAmZnjT3lPEhw"}
         ],
       "Updates":[{
           "Container":"MMM_Access",
           "Envelopes":[[{
                 "enc":"A256CBC",
                 "dig":"S512",
                 "kid":"EBQD-MFCK-GMFI-EJLU-JWF2-5YJB-J2SB",
                 "Salt":"MGj4PLH5oEB0phrcEoUfhQ",
                 "recipients":[{
                     "kid":"MDQY-J72A-VPAO-WDOD-GYY7-4ZZ5-PLVL",
                     "epk":{
                       "PublicKeyECDH":{
                         "crv":"X448",
                         "Public":"DEvl-JoQy57jXQIU681ocrUxWx8hbEdlK
     E0Fn-Mqu7PrzJ3sSYGho5oesrT8XeOAO8RStyCXyVWA"}},
                     "wmk":"jXXpYAWULwnpOZwIGajhOnCNiGKQ5_tspWbJ-kyB
     Ccjd3gbSXDTllg"}
                   ],
                 "policy":{
                   "enc":"none",
                   "dig":"none",
                   "EncryptKeys":[{
                       "PublicKeyECDH":{
                         "crv":"X448",
                         "Public":"Ie2m94scmj7Nr_YqM15SxtGkfnBLYlTkn
     kIelVXqariIAuz_vB2HDqMHIg3Z-PKiXFeqUjL4gNkA"}}
                     ],
                   "Sealed":true},
                 "ContentMetaData":"ewogICJjdHkiOiAiYXBwbGljYXRpb24v
     bW1tLWNhdGFsb2cifQ",
                 "SequenceInfo":{
                   "DataEncoding":"JSON",



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                   "ContainerType":"Merkle",
                   "Index":0}},
               "zyhYVztZr_46YOc79wOqvg",
               {
                 "PayloadDigest":"WHWDVPPAr7l7pVkNrvtILKf4KP_BjYMHzk
     1RyJ-rVWwX2qBOLuJYIlTZM_EI16cqxNVXPk-kwMET8VpVF4Guug",
                 "TreeDigest":"88cOmpTaXmWH1Bh0-1t9tWWQ_hTdVWPm_dZ8-
     4UwPOngKuxxyMb4fFNa7MG2sxPKgFvWmnzLHPsfSOx9MebgiA"}
               ],
             [{
                 "enc":"A256CBC",
                 "dig":"S512",
                 "kid":"EBQM-E4VE-W2JV-NFAM-QKIB-HEBR-6SNT",
                 "Salt":"yVuWeqskmU5BaEexTuKIjQ",
                 "recipients":[{
                     "kid":"MDQY-J72A-VPAO-WDOD-GYY7-4ZZ5-PLVL",
                     "epk":{
                       "PublicKeyECDH":{
                         "crv":"X448",
                         "Public":"XmkgwHxlHkSERGMKJObH6_X25Iqvcl31A
     dSLgFl7TBLGT6ZMY_6zdg1iWWz1Ku2hRvklYBF4nUYA"}},
                     "wmk":"FvT2-j2jJaGjWNEYD7PC83hiUe_MEAJzXIosp7a5
     p9d7nlDm7NjLXw"}
                   ],
                 "ContentMetaData":"ewogICJVbmlxdWVJZCI6ICJNQUhDLUVG
     UE8tT1JQUy1UTE9CLUFYWkctWEJTQy1FQkpYIiwKICAiRXZlbnQiOiAiTmV3In0",
                 "SequenceInfo":{
                   "Index":1,
                   "TreePosition":0}},
               "IKq50Z4or4qnCBQtJ2_Kg4giXIs9vuP_a-fxtVZh4jYBFSfGPdx4
     PwAfDLQMWeXO70SMxyiDfyL8GIBB8lYQW1f68tUlH0odLNi6FXjqjytKJCM3W7iWn
     DKf4H7Vedkpdci9g0iuJwPXY_7molYBrnQhpPlUzsXT-V6_-ngbtfoRbWxG5k17J-
     ACcxkbon_FndmlinyNNW6eo5UCJcf8uA",
               {
                 "PayloadDigest":"aUlSvwsl7mrfcmWgOeRZ-DjikfZD0CIxf7
     k0F43biFDTlSlHAaZfGBMje3PJkozhW2exm1lIy47ZnJJqmvf4nQ",
                 "TreeDigest":"ElkBtR7By3w09N45wE-73GdXbLtm9VIqHrt3b
     ZlIGGtf65ybq34emfzxjIU9gPWRERqWgy6xnODImm95DmGr0A"}
               ]
             ]},
         {
           "Container":"MMM_Device",
           "Envelopes":[[{
                 "enc":"A256CBC",
                 "dig":"S512",
                 "kid":"EBQC-LETH-D6TZ-4MVZ-BIXG-NIUJ-7YOG",
                 "Salt":"mnJVCyVdweTZOLa3fOdmdw",
                 "recipients":[{



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                     "kid":"MDQY-J72A-VPAO-WDOD-GYY7-4ZZ5-PLVL",
                     "epk":{
                       "PublicKeyECDH":{
                         "crv":"X448",
                         "Public":"dD1IqK97rRnu8HA5WhCgLNP-2Qu3PszUT
     l7lUCSFC79SpV3j9PbEiB5tZqaInVfz9Jvc70bJPcwA"}},
                     "wmk":"UrOxQRZcgDtkAtyNG-vBleqzAEpVy7ovSq3RDZ-M
     Ma8EWKHCiNE7Sw"}
                   ],
                 "policy":{
                   "enc":"none",
                   "dig":"none",
                   "EncryptKeys":[{
                       "PublicKeyECDH":{
                         "crv":"X448",
                         "Public":"Ie2m94scmj7Nr_YqM15SxtGkfnBLYlTkn
     kIelVXqariIAuz_vB2HDqMHIg3Z-PKiXFeqUjL4gNkA"}}
                     ],
                   "Sealed":true},
                 "ContentMetaData":"ewogICJjdHkiOiAiYXBwbGljYXRpb24v
     bW1tLWNhdGFsb2cifQ",
                 "SequenceInfo":{
                   "DataEncoding":"JSON",
                   "ContainerType":"Merkle",
                   "Index":0}},
               "8uLxPeRu7X0HUwf4v4ViRA",
               {
                 "PayloadDigest":"qnV5ry9sL4C68a0Kg1roD1cHCG5nps-XHn
     GCuzRhdet6OkaPPZvSMq-AAJvh_huTDfA16J9OYLnRJVUL2fh6kQ",
                 "TreeDigest":"ValOROMKQy4zSONTIPA4prZqgA1YE1CdBkDmT
     nmTJajI5XkO7Ybed3itG4IuYtbB9JX9vT_J2CkKgvbnIUYe7g"}
               ],
             [{
                 "enc":"A256CBC",
                 "dig":"S512",
                 "kid":"EBQL-MXIB-EELT-2SOW-SCAB-WHJ2-OMXN",
                 "Salt":"PQGoOlxH2RNr6PwuNhXl1w",
                 "recipients":[{
                     "kid":"MDQY-J72A-VPAO-WDOD-GYY7-4ZZ5-PLVL",
                     "epk":{
                       "PublicKeyECDH":{
                         "crv":"X448",
                         "Public":"UgnDvOH8xxl-JYNgvsSbGm9FTtXSb5KXR
     ff53PY0bcgyrUKNoiRPztRCwC2MKtPF4qGOtVVOezuA"}},
                     "wmk":"q-_sEC7YocmoZQagZz3Lo_ea6WBEkqXxmkEBGwqT
     sm9_GSKZKUzKdg"}
                   ],
                 "ContentMetaData":"ewogICJVbmlxdWVJZCI6ICJNREpILTMz



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     UkwtMlc0Sy1DWktSLVZYR0EtVElDNy1QSzRRIiwKICAiRXZlbnQiOiAiTmV3In0",
                 "SequenceInfo":{
                   "Index":1,
                   "TreePosition":0}},
               "WRbUWur99oRwA1uICKbOXHcwjnB1L8ag0srUYruQ4Z7zpgHs22RK
     SFcJTm3RGOaUyBRmjCCLwSe8I8gNdEF5qzlXipO2SWaYZG1_mldItLY-vw_QrQ19K
     mPAfDqw4sL9ULkA-Wv3UJBMCprBL2hf1TZeY_urgSYs3HUQx24VGVs_JtZ9-sGJqW
     _Pp11XvWBvV0m9ESeICVbntN4Mo7kcwxcF0ErHGI91ecHWW97bUKiPNIty3NSowUb
     8efKDnWVTwtlGCCPc88ZWqcLHGcqzkQje-mBPltUWNqUlHdynPtRPYZ5TGqHprJhn
     VgUfGtOTtIcZcSiK869eTTSnOkZovgQATODTQayy0o56555pqtQ_mhamRYJgkMrIv
     6ckRJTq_CRIrVNKM9BGGl9OCLke8RPLfuZtR4M5_Yo6dVVUo291Z5qTLfx2oy_V-k
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     Y_88taAWkaUZjMkaVym-neZVsMVIay0tfdUUjtqHLRpyu2yGB6wzeOXm77N--u9yo
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     SoTReDKhCZQRMs4QitEDUjcYsDpw5bLwtrf1EDrIgEOFPomPzMqdVqi4S_AQjXQ",
               {
                 "PayloadDigest":"TJ1qjXTKHecpvFT2S0MB9xvUarofJEoUsb
     Ohz8qyRma3qpVrZ9oSllz8VjCPQIbJjb7KQ_BjyRQnZhYTV86wRQ",
                 "TreeDigest":"ETeQjy0XpileQSzyTpn5326jCsfQtZ5oO-0W3
     SWcNrLcyjduJooywCIHTS3ZrUk91UHZmBoI24o3hf1T3T0h1g"}
               ]
             ]}
         ]}}

   The response payload currently reports the success or failure of the
   bind operation:

   {
     "BindResponse":{
       "Status":201,
       "StatusDescription":"Operation completed successfully"}}

   It is likely that a future revisions of the specification will
   specify the host(s) to which future account service operations are to
   be directed.  This would allow the account management operations to
   be separated from the account maintenance operations without
   requiring the traditional tiered architecture in which every
   interaction with a service is first routed to a host that cannot
   perform the required action so that it can be directed to the host
   that can.

6.2.1.1.  Bind Group Account

   Mesh Group Accounts are created in the same manner as user accounts
   except that the ProfileGroup is specified.







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6.2.2.  Unbind Account

   An account registration is deleted using the "UnbindAccount"
   transaction.

   This operation needs to be extended to allow the process of
   transferring accounts to be supported such that the old service can
   say where the account has gone (if it is willing to do so).

   >>>> Unfinished ProtocolAccountDelete

   The request payload:

   {
     "UnbindRequest":{}}

   The response payload:

   {
     "UnbindResponse":{
       "Status":400,
       "StatusDescription":"Error occurred"}}

6.2.3.  Account Recovery and Transfer.

   Account recovery is necessary in the case that user has lost control
   of every administration device connected to the account and must re-
   create the account profile and bind a new set of administrative
   devices.  Account transfer is the process of unbinding an account
   from one service and rebinding it to a new one.

   These capabilities are both critical to the long term success of the
   Mesh but have been deleted from the current revision of the
   specification as their implementation is interdependent on the
   architecture of the callsign registry.

   >>>> Unfinished ProtocolAccountRecover

   [TBS]

6.3.  Persistence Store Management

   All the state associated with a Mesh profile is stored as a sequence
   of DARE Messages in a Dare Container.  The Mesh Service holding the
   master copy of the persistence stores and the devices connected to
   the profile containing complete copies (replicas) or partial copies
   (redactions).




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   Thus, the only primitive needed to achieve synchronization of the
   profile state are those required for synchronization of a DARE
   Container.  These steps are:

   *  Obtain the status of the catalogs and spools associated with the
      account.

   *  Download catalog and spool updates

   *  Upload catalog updates.

   To ensure a satisfactory user experience, Mesh Messages are
   intentionally limited in size to 32 KB or less, thus ensuring that an
   application can retrieve the most recent 100 messages almost
   instantaneously on a high bandwidth connection and without undue
   delay on a slower one.

6.3.1.  Status

   The status transaction returns the status of the containers the
   device is authorized to access for the specified account together
   with the updated Device Connection Entry if this has been modified
   since the entry presented to authenticate the request was issued.

   Alice adds an entry to her bookmark catalog.  Before the bookmark can
   be added, the device synchronizes to the service.  The
   synchronization process begins with a request for the status of all
   the stores associated with the account that it has access rights for:

   {
     "StatusRequest":{}}

   If the account has a very large number of stores, the device might
   only ask for the status of specific stores of interest.

   The response specifies the status of each store specifying the index
   and Merkle tree apex digest values for each:














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   {
     "StatusResponse":{
       "Status":201,
       "StatusDescription":"Operation completed successfully",
       "ContainerStatus":[{
           "Container":"MMM_Inbound",
           "Index":3},
         {
           "Container":"MMM_Outbound",
           "Index":1,
           "Digest":"FEHy24Y6cLModDXWH31kVc2a3TdhjXPooKHpLAb2JbsO1YQ
     nJolmowXAYHhkOGY0kg3jrKNTjds0myf4Dw1sdg"},
         {
           "Container":"MMM_Local",
           "Index":2},
         {
           "Container":"MMM_Access",
           "Index":3},
         {
           "Container":"MMM_Credential",
           "Index":4},
         {
           "Container":"MMM_Device",
           "Index":3},
         {
           "Container":"MMM_Contact",
           "Index":2},
         {
           "Container":"MMM_Application",
           "Index":1},
         {
           "Container":"MMM_Publication",
           "Index":1},
         {
           "Container":"MMM_Bookmark",
           "Index":1},
         {
           "Container":"MMM_Task",
           "Index":1}
         ]}}

   Bug: The current version of the reference code is only returning the
   digest values for the outbound store.

6.3.2.  Download

   The download transaction returns a collection of entries from one or
   more containers associated with the profile.



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   The service MAY limit the number of entries returned in an individual
   response for performance reasons.

   The previous status operation has reported that a new envelope has
   been added to the credential store.  The device requests this data
   from the service:

   {
     "DownloadRequest":{
       "Select":[{
           "Container":"MMM_Credential",
           "IndexMin":3,
           "IndexMax":4}
         ]}}

   The response contains the requested envelope:



































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   {
     "DownloadResponse":{
       "Status":201,
       "StatusDescription":"Operation completed successfully",
       "Updates":[{
           "Container":"MMM_Credential",
           "Envelopes":[[{
                 "PayloadDigest":"sy1ssbIvs3DVwUObsWIpbtGquWaoEYtCqY
     1smobL0T5ydXU29v8ixwUGCDO_pWxh3rWS5yXbOK4rhufAQfMq7w",
                 "enc":"A256CBC",
                 "dig":"S512",
                 "Salt":"YnQw4J41v4oCWz8krGmFNQ",
                 "recipients":[{
                     "kid":"MDQY-J72A-VPAO-WDOD-GYY7-4ZZ5-PLVL",
                     "epk":{
                       "PublicKeyECDH":{
                         "crv":"X448",
                         "Public":"_dHVp-Pmr9wgX8Br8zwPEyTT4puZ-N2Z2
     cRql0WuuTAXm8Antqfg0dHit2iy5tD9C_ji4FcuoPcA"}},
                     "wmk":"Il9yeV5COdhTo6ULAbHU084HB3qPqVIgyHIexstl
     Dk7H1gWixmkj9A"}
                   ],
                 "ContentMetaData":"ewogICJVbmlxdWVJZCI6ICI6ZnRwLmV4
     YW1wbGUuY29tIiwKICAiRXZlbnQiOiAiVXBkYXRlIiwKICAiRmlyc3QiOiAxLAogI
     CJQcmV2aW91cyI6IDF9",
                 "SequenceInfo":{
                   "Index":3,
                   "TreePosition":716},
                 "Received":"2021-09-20T18:15:28Z"},
               "TprbdZruvdRXXzOAP_SAxvADHwrULXW_XrLtrvd_vvrbRAeXXmus
     fRrL8sIZod3f4uXNZPUbwDAiiJTeT1z0vKzoMYNsJ7gkgbdBx5wvKS_APbzHnfBAd
     qdKZJDPZCf9NIWrjPs7uaMxCmHajt2o2jgNbbmE17Ewua_YX1hsxHY",
               {}
               ]
             ]}
         ]}}

   Future: The current implementation of the download operation is
   limited by the capabilities of the HTTP binding of the RUD transport.
   A future binding allowing operations that consist of a single request
   followed by a sequence of responses will allow much greater
   flexibility.

   Future versions of the protocol may support optional filtering
   criteria so that the service only returns objects matching specific
   criteria and/or only return certain parts of the selected messages.





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6.3.3.  Transact

   The transact transaction appends envelopes to one or more stores.
   The operation is atomic, that is either all the changes specified
   will be made to the stores or none will.  This ensures that
   simultaneous attempts to update a store do not result in race
   conditions allows Mesh stores to provide ACID (Atomicity,
   Consistency, Isolation, Durability) properties to the applications
   they serve.

   Clients SHOULD check to determine if updates to a container conflict
   with pending updates on the device waiting to be uploaded.  For
   example, if a contact that the user modified on the device attempting
   to synchronize was subsequently deleted.  The means of resolving such
   conflicts is not in the scope of this specification.

   Each update to a catalog or container specifies the expected
   container index and apex digest.  This provides a strong guarantee of
   consistency.  The service MUST verify each update to check that the
   Merkle Tree values specified are consistent with the store entries
   and that the signature on the apex value (if specified) is valid and
   correct.

   Services MAY impose limits on the size and number of additions
   performed in response to a "TransactRequest" message to ensure that
   processing time does not degrade performance for other users.

   The request payload specifies the data to be appended to the stores.























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   {
     "TransactRequest":{
       "Updates":[{
           "Container":"MMM_Bookmark",
           "Envelopes":[[{
                 "dig":"S512",
                 "ContentMetaData":"ewogICJVbmlxdWVJZCI6ICJTaXRlcy4y
     IiwKICAiRXZlbnQiOiAiTmV3In0",
                 "SequenceInfo":{
                   "Index":1,
                   "TreePosition":0}},
               "ewogICJDYXRhbG9nZWRCb29rbWFyayI6IHsKICAgICJVcmkiOiAi
     aHR0cDovL3d3dy5leGFtcGxlLm5ldCIsCiAgICAiVGl0bGUiOiAic2l0ZTIiLAogI
     CAgIlBhdGgiOiAiU2l0ZXMuMiJ9fQ",
               {
                 "PayloadDigest":"gtpamSravs9YkD3Wi6-rIFqFOINwLFj8Q2
     eGpMjmbyP-_TRCgRs9Hqpo3bJPhoRSgUmfIUsQTDNeiT414W56eA",
                 "TreeDigest":"TpXg14cDEx_-1Qe-h1qiryihslO0MrUCLW0L7
     wvq-YLCEWZfAIrp9FmBwNE0se8UN1nFY4h1aqXbN3yBuKfg9w"}
               ]
             ]}
         ]}}

   The response reports successful completion:

   {
     "TransactResponse":{
       "Status":201,
       "StatusDescription":"Operation completed successfully"}}

6.4.  Device Connection

   In order to support the wide range of affordances supported by
   devices, four device connection interactions are currently specified.
   The use of these mechanisms is described in
   [draft-hallambaker-mesh-architecture] and the interactions themselves
   are described in section ??? following.

   Device connection operations are always issued by a device requesting
   connection to a Mesh account and must therefore be authenticated
   under the device profile rather than the account profile.  Two device
   connection operations are currently defined:

   Connect  Requests connection to the account.

   Complete  Polls for completion of a connection request.





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   Since the second operation is merely polling for completion of the
   transaction requested by the first, it is likely that these will be
   combined in a future revision of the specification.

6.4.1.  Connect

   If the connection request is initiated by the device being connected,
   the device constructs a "RequestConnection" message which is posted
   to the Mesh Service using the Connect operation.

   If the Connect operation is accepted (i.e. the service determines it
   is not abuse), the service constructs an "AcknowledgeConnection"
   message which is forwarded to the inbound spool of the account to
   which connection is requested.  The requesting device receives a copy
   of the "AcknowledgeConnection" message and the profile of the account
   it is requesting connection to.

   As described in the following section, the AcknowledgeConnection
   message contains the request details presented by the device and a
   nonce value generated by the service.  This nonce value is used to
   compute the witness value that will be used for mutual authentication
   of the device and account.

   The connect request is made to the service, not the account.  The
   payload contains the enveloped connection request:

   {
     "ConnectRequest":{
       "EnvelopedRequestConnection":[{
           "EnvelopeId":"MBX4-HVCH-S6LU-BEWP-KAM5-7OYF-F4YG",
           "ContentMetaData":"ewogICJVbmlxdWVJZCI6ICJORFlSLUZTVDItRD
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     BnZXdvZ0lDQWdJQ0FnSUNKUWRXSnNhV05MWlhsRlEwUklJam9nZXdvZ0lDQWdJQ0F



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         ]}}

   The response payload contains the information the device requires to
   compute the witness value and to poll for completion.  This is a copy
   of the request acknowledgement and a copy of the profile of the
   account the device has requested connection to:





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   {
     "ConnectResponse":{
       "Status":201,
       "StatusDescription":"Operation completed successfully",
       "EnvelopedAcknowledgeConnection":[{
           "EnvelopeId":"MAHM-HDMG-VUAE-LKOI-GABM-CRVE-YTWG",
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           "SequenceInfo":{
             "Index":6,
             "TreePosition":11822},
           "Received":"2021-09-20T18:16:18Z"},
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         {}
         ],
       "EnvelopedProfileAccount":[{
           "EnvelopeId":"MC6L-GFYJ-7EOP-2OWN-24ZJ-4RC7-EXTW",
           "dig":"S512",
           "ContentMetaData":"ewogICJVbmlxdWVJZCI6ICJNQzZMLUdGWUotN0
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     ZWF0ZWQiOiAiMjAyMS0wOS0yMFQxODoxNToyMloifQ"},
         "ewogICJQcm9maWxlVXNlciI6IHsKICAgICJQcm9maWxlU2lnbmF0dXJlIj
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         {
           "signatures":[{
               "alg":"S512",
               "kid":"MC6L-GFYJ-7EOP-2OWN-24ZJ-4RC7-EXTW",



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               "signature":"aeCuTY0X-J9_L6HGafZKbg5ZueP6PjoydfQDXB28
     B0CpGfqhPjTc6bjLF-vZWzSV4wZ9wotFvXyAR_QRXW7EtpbRz4s2j-bdzGR6z0jzJ
     GnFWaxUYfAzCoFUHfhUDzJTthMNkQiJ-sUyRyriqaF0HjUA"}
             ],
           "PayloadDigest":"ZPrAcmAuks4uOaLyaHIyrISbFbCuNwXI3h7IVDB4
     hzyitFAsVEg8G5QukhJexWuntd_8f4VwQaAmZnjT3lPEhw"}
         ]}}

6.4.2.  Complete

   The complete operation is used to complete the binding of a device to
   the account regardless of whether the operation is initiated by the
   administration device or the connecting device.

   The complete request is made to the service, not the account.  The
   payload specifies the account the device is requesting completion for
   and the identifier of the completion message.

   {
     "CompleteRequest":{
       "AccountAddress":"alice@example.com",
       "ResponseID":"MB3U-D5WR-CRBE-PM3W-BXKC-WJL7-7QMZ"}}

   The response payload:

   {
     "CompleteResponse":{
       "Status":201,
       "StatusDescription":"Operation completed successfully",
       "EnvelopedRespondConnection":[{
           "EnvelopeId":"MA6Y-NAFZ-GH55-QXQK-AVY7-M4QG-BOKE",
           "enc":"A256CBC",
           "Salt":"t31lj96_2DUNpdtw7r2j_g",
           "recipients":[{
               "kid":"MDZU-LVEQ-FWVC-ZTZQ-5ZVM-HDFW-CMCR",
               "epk":{
                 "PublicKeyECDH":{
                   "crv":"X448",
                   "Public":"trxRbB_RWPzsJLQJuS5iNdPMwszuRy_57LsS2je
     LS09bRlPxgdGIgGQJRUYLE0HqUOg9uL33Y4kA"}},
               "wmk":"lOHUgxHWSTfhi_kPvC9ArgAmKjC-6UfiYqUVJj07DsWH94
     cuUHTCIA"}
             ],
           "ContentMetaData":"ewogICJVbmlxdWVJZCI6ICJNQjNVLUQ1V1ItQ1
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     CiAgIkNyZWF0ZWQiOiAiMjAyMS0wOS0yMFQxODoxNjoxOVoifQ",
           "SequenceInfo":{



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             "Index":3,
             "TreePosition":426},
           "Received":"2021-09-20T18:16:20Z"},
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     sjUG4e9Bl4RVlnRAwQPb7ijugUuNuM1NlNgyBG7WcBKZv0picRdOCF3uqAGo71Hlc
     S4J4C5QZ5QWkvXh9rHHMLjTAIJ6hTsPY_Es32nFRyvasRaWzopL3NISOpI28w",
         {}
         ]}}

6.5.  Publication

   [Future: Consider eliminating this mechanism entirely and instead
   using messaging flows.  The means of achieving this should become
   better apparent when the problem of publishing large messages via a
   pull mechanism is considered.]






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   The Publication mechanism allows content to be published through a
   Mesh Account and retrieved by means of the EARL mechanism described
   in Uniform Data Fingerprint [draft-hallambaker-mesh-udf].  This
   mechanism is used in certain flows supported by the Mesh Device
   Connection and Contact Exchange functions.  There are two operations:

   "Claim"  Post a claim to a published document

   "PollClaim"  Check to see if a claim has been posted.

   Content is published by appending an entry to an account's
   Publication catalog by means of a Transact operation.  The content
   may then be retrieved by issuing a claim to the account specifying
   the publication identifier that is authenticated under the value
   specified in the EARL.

   Use of the Publication catalog to post content necessarily requires
   that the content be smaller than the maximum message size imposed by
   the Mesh Service so that it can be uploaded to the service by means
   of a Transact transaction.

   Publication of large data items will require modification of the
   protocol to support use of a detached message body.  Transfer of a
   detached message body is outside the scope of this document.

6.5.1.  Claim Transaction

   The claim transaction is used to post a claim to a document published
   by means of an EARL.  The claim interaction is used in the Static QR
   Code connection interaction but MAY be used for other purposes as
   required by Mesh applications.

   A claim is made by sending a "ClaimRequest" message to the service to
   which the publication is posted.  The service responds with a
   "ClaimRespose" message specifying the success or failure of the
   claim.

   A device is preconfigured during manufacture and a Device Description
   published to the EARL:

   The client claiming the publication creates a claim message
   specifying the resource being claimed and the address of the Mesh
   account making the claim.








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   {
     "MessageClaim":{
       "MessageId":"NCQB-Q5L2-AFBH-NB7E-FEI7-3QFE-ZONS",
       "Sender":"alice@example.com",
       "Recipient":"maker@example.com",
       "PublicationId":"EBQI-T2FU-LP4G-KIFQ-PMYI-V6XH-PZLB",
       "ServiceAuthenticate":"ACKX-DTYK-TMVD-T7Q5-FDK6-IJR2-DHNF",
       "DeviceAuthenticate":"ADZG-TVGE-DPQP-4Q4X-EBD7-PUSQ-JTTO"}}

   The message is signed by the claimant to make a RequestClaim to the
   service:

   {
     "ClaimRequest":{
       "EnvelopedMessageClaim":[{
           "EnvelopeId":"MDH7-B3JK-3KWW-XMRX-3UIS-AVZR-EJR2",
           "dig":"S512",
           "ContentMetaData":"ewogICJVbmlxdWVJZCI6ICJOQ1FCLVE1TDItQU
     ZCSC1OQjdFLUZFSTctM1FGRS1aT05TIiwKICAiTWVzc2FnZVR5cGUiOiAiTWVzc2F
     nZUNsYWltIiwKICAiY3R5IjogImFwcGxpY2F0aW9uL21tbS9vYmplY3QiLAogICJD
     cmVhdGVkIjogIjIwMjEtMDktMjBUMTg6MTY6MzlaIn0"},
         "ewogICJNZXNzYWdlQ2xhaW0iOiB7CiAgICAiTWVzc2FnZUlkIjogIk5DUU
     ItUTVMMi1BRkJILU5CN0UtRkVJNy0zUUZFLVpPTlMiLAogICAgIlNlbmRlciI6ICJ
     hbGljZUBleGFtcGxlLmNvbSIsCiAgICAiUmVjaXBpZW50IjogIm1ha2VyQGV4YW1w
     bGUuY29tIiwKICAgICJQdWJsaWNhdGlvbklkIjogIkVCUUktVDJGVS1MUDRHLUtJR
     lEtUE1ZSS1WNlhILVBaTEIiLAogICAgIlNlcnZpY2VBdXRoZW50aWNhdGUiOiAiQU
     NLWC1EVFlLLVRNVkQtVDdRNS1GREs2LUlKUjItREhORiIsCiAgICAiRGV2aWNlQXV
     0aGVudGljYXRlIjogIkFEWkctVFZHRS1EUFFQLTRRNFgtRUJENy1QVVNRLUpUVE8i
     fX0",
         {
           "signatures":[{
               "alg":"S512",
               "kid":"MCUM-SQ35-ZJUQ-TMTK-HB4X-57QQ-YK2Z",
               "signature":"WmjtRkJpq6QiqLNxY_ljzSrAUO-BzxDqK9yT-HB0
     gN1TdLw93Jsj2vkIHsdQOMmVbullSyjK66OAodsKV-DEPP2EUPHA7_iNu6HwHoOaa
     SJvtUhBaiYirIe8_-ufIpfZfRxZbQdrU7uIsD78Fw8JhBcA"}
             ],
           "PayloadDigest":"QeCfPNqPnIgnkZqOk5ocOCmmJUNa5Zj1DqhPE5OS
     giY_01726xlWNvmn10PwOwdQsuQpgyRxASzsi5z5yRMcwA"}
         ]}}

   The publication is found and the claim is accepted, the publication
   is returned in the response.








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   {
     "ClaimResponse":{
       "Status":201,
       "StatusDescription":"Operation completed successfully",
       "CatalogedPublication":{
         "Id":"EBQI-T2FU-LP4G-KIFQ-PMYI-V6XH-PZLB",
         "Authenticator":"EADT-KVZF-RR6U-D6KP-NRYQ-TAI2-F3AU-4NZL-MBHT
   -MHOX-SUNE-X7UK-P5WD-Y",
         "EnvelopedData":[{
             "enc":"A256CBC",
             "kid":"EBQL-DNYM-VM4G-UE4U-4PDF-UWSQ-7ONX",
             "Salt":"6TNjMCiVgB1PpVNeEaH-iA",
             "recipients":[{
                 "kid":"EBQI-T2FU-LP4G-KIFQ-PMYI-V6XH-PZLB",
                 "wmk":"bYJ4W7F-Oa7o5pR50uwdq4GCtF2wX3tgr3zNt2pTk7DB
     tHyUamIX_g"}
               ]},
           "ZrETLTXinD0jkRoz_OAYlnFRPAFVgVrORZM2qLUfNQts8qSkaTBoOQ2_
     CwTcH7htUnMhm8k9JZgfztKvY3ggmN-tf0gKnkY-nUc4UOBW7VXmkXYtnF9iEjtRq
     taIe0RbmeT5lv4P-1ahs2G2PEm3nqnyygfcfyRn_XJpXgICKGzIQvK2pjNXLHsRJ7
     Ef9yQg9tSQR0dk8Js_YaOeQwrP7XCogBCk2XSaPwyo-8fufIfSnbUea5ZcDdglnQy
     stbj-TKtM9WgNNBxy4BU4jXMZhu2_hPaOXFqYN5hFwr-uZXXi4iHsOg6Xo8qNHZ8H
     d__86f_1_9XPpggnHXjAFyIjSf7VDo3JR2Mv_lTXExlMfIjYpaclg2r_CmlkBNROu
     RqZPxKzMbLnSMLd_x1M5JkIO21UDq7wt5_Dm_R1AObLCqJnr5EyTeZ0UV5eqCENOS
     9oxLc4It4Y1vy4ZAwXkUVqgsQSV2j2tfOUDFmPtO3qrPuOsUoPViP_Vczxusp1KPm
     19vt1-ZG-PcW5KK9HK1lTN9Ym1Xp92hPh_p4S2tDsRtKf1L3EI3wgqWc3Czk5atk8
     VoM-Ty4kkYfwVpEp_tUvzq6T5j252NpdE2vZSbHt66yCHVs6XrPMAyYMWTUxLjcRi
     qEmVI-dFAoFbFUpVFfNN8u56eXfRQ16YG0YTwwsvnO9bFFiMP69Pup-SvcP9Eox7J
     76DAtI09IQFt6ohU1RUOHXCDRZPos1kI6T04vrfX_AEfnwDs0XgNk92zKx1KQ6IOo
     66HDY2qOFJgDdiES_xC3VjgQHD40D200CjXeVPjsbtBrEBZC9_y0E5fNT8mQb9hVs
     swheBeYZ0Lwobl2Rm1IfQAcul66Xhxur3f32ZEm7iD_npBi2TnCyp2rLPA88_PDV4
     pn1WBqSjB2QCSqi-GagQ-z9h-RbGig2ef_eQ3GdmT_YLVIzEVtsNhFHMWi2BlEUZ7
     jN3sS0vE4EBK_v18c9_yUxRunOzX9K4_VBBbBExXznHxydIHhsgDzU8cb5CcjKw0n
     6GkpbO4IrdWQPWwCNa8zTB_KlymiY2YykQ7ttd35kKHGVC7EzYGuIEPj-pnPyKmfn
     oClIruA1CNc5_De4fQ9PeeMnB-xibqoDyMBPxKnfUrHfYgZj1hvgfCFjfcf2Qqslc
     5UcUNZh94E6iNX4ScIeio_X2wfEkVUSkU675v6Cy2kH9LJ9LfdinyuPHpzHAqvHAX
     ePbu8lF1nCMhhrGgY7yD42pnobf5ljgFPxxvrKs8PElKyU-1Ciqb6bAOxNKlHZ9cm
     ZNstFlnPN-rWggw_n1lcHQDW4mCztdGtD3eevp6RcVlb5wA-5otl30qxqWR8p0Hhx
     lQo7gExMftfiRHiHzZG2-8OqkYRBlAsDIoGqPaMElEiG-FChvWfEHVNpNqiiWgpXh
     UfeB_FGjnv0fVT0B2jRcSh7A2s-JO0p9ohizC4E4yCdwY-d6G193vAhCyonQgVtgQ
     0rM1oAgXJ3sy65flm5MTRoPtRt2uBFmhza7iW-4IaH5_LLapZ3ry8Fct8-NV55XfE
     BmLiH_Ga0ASCD7yPb1ylSiMSMfOJ8VkdeUv09A__ZGETUOVxb1oTZ951pbSlwZdf3
     VXptUoKvqKzluYQWRv-QBvL2r691cPRMQWUQ2Yhafg4U43An5XhLSwBtt2As_Y06g
     lZiPmk0wrzkgrrd1eD2e9jJrH3_XKjL2d2FUeRLsNhe0YCqXxYv60VIWookDpDZY0
     GQmHa7I_bSRzBwR9QbIa5EafXMND8adCsTMH4cUWKGNwFK00jtSY8igc22NHljSmQ
     LA_bV2RdUVJ0tU2qnIWFPscpBcpYUh1PvrcSZ4M2ThiOUi193Up5-Y5Ibgz66F0Zw
     jtWgxCIUiz4oOEXLxmj7NkhLR7EFuWrKrNCUNhRgBDC2tlzwBnudaFeWnG019NeG7
     EC7D_osaloz1936fct2l81OKkOeBozPkT6xSpvtNQuTsfVvAFgE-XHRivhcD3DJ9s



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     4YJpw2-aKqo5fJvS1qwxEQnQQZAbU8yoe7o0DSCBvbVIfZGjS448ksqazhlkE-1kS
     TB4wqCi5eUJuWDBCx3b1ykUONWLvqPmsIwe_lN4Jxg3RCVEpZBJ39EZ4uIKTmfI02
     jwkmNpvbRK52NwTHtYxsf7gRDQf3N7bUxppVsZqay49zW5fOxCHgfcBp9Z8NSw1Mt
     XNJ-SNKHbTFbpAwc5uvK4M6J30fZyuT1KBGYsmq5mxV-Oj35GOqLYmq9VCB39kvbe
     uuBDGEp_agvQ7azWUZ3UE-Goir0Vfrx3G0skadYfqPNz88YZzQAp5rNbaZoFgpjqk
     GibVRjaLM8watr_qClb1HJ4cHS-unDDv3PdFu4qVLlcuhOZduBTRi87f9WgS1XEzA
     Qlo9M3y2xlzfXurE6ZnFX8JcV5MYx2RmofAl17nduGesNaBNJ8CX-ho2ahJPFUf-P
     rlIdGPGRzHbCFO4Ol4naqsOv-Ji5jZc2Raz-MPyEc7SyBcdX0Ryd0WUcWZ9ao60qN
     rc0EufZPmJOE2g1wijQ-UUKKxXI6CX6n4QPy_E8w59XzjYf-IZTNkkOp34hDrhUcT
     61ReWo9rinqVGVDz6Ziff3z8YST02yYTaxG1PHoLp_y5j9oGSLovAvx1bWOXvajAx
     Uedy4GZxfsJr4EA3xZs8ayXilKffV_OEqR5vW32S3-qRY-L0TA_ye42kZ8FHAgvok
     EzJGl7bCFBgHt7z5sxyjUYPrvpCr5XWfhVY69jzwVBhgrPnaSOQ3m2j4-uxy_lZWD
     hxe5vrgIMBbhCAgzuTeDJtNdj4cJIuoLhNTJvHh4FyA9ne_b1LWbn_w7nssr0gBN1
     WHhz2FnxaFb-v-5TMTaS1kJy4FZUnAENM7ukDG07ND7anOV-6MK6lhX2tccQLI3wC
     sAzwwrfb6dgV-kS813rTK24DicNvnuKFFxJkQaA0fEUY7XUpnFjdf-k8YrB93zX5o
     COj-g0ucMrImDMS0-6Wsm8yd8eDUhVx9Zyb7HnCwA8DV0Ob7w"
           ]}}}

   The device waiting to be connected uses the PollClaim transaction to
   receive notification of a claim having been posted.

6.5.2.  PollClaim Transaction

   The "PollClaim" transaction is used to discover if a claim has been
   posted to a published document.

   When an authenticated, authorized request is made, the service
   responds with the latest claim posted to the publication.

   The device in the example above periodically polls the service to
   which the device description is published to find if a claim has been
   registered.

   The PollClaimRequest contains the account to which the document is
   published and the publication ID:

   {
     "PollClaimRequest":{
       "PublicationId":"EBQI-T2FU-LP4G-KIFQ-PMYI-V6XH-PZLB",
       "TargetAccountAddress":"maker@example.com"}}

   The response returns the latest claim made as signed message:









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   {
     "PollClaimResponse":{
       "Status":201,
       "StatusDescription":"Operation completed successfully",
       "EnvelopedMessage":[{
           "PayloadDigest":"QeCfPNqPnIgnkZqOk5ocOCmmJUNa5Zj1DqhPE5OS
     giY_01726xlWNvmn10PwOwdQsuQpgyRxASzsi5z5yRMcwA",
           "EnvelopeId":"MADV-CBSP-N4SR-6JQD-7ONP-P5EP-TZ47",
           "dig":"S512",
           "signatures":[{
               "alg":"S512",
               "kid":"MCUM-SQ35-ZJUQ-TMTK-HB4X-57QQ-YK2Z",
               "signature":"WmjtRkJpq6QiqLNxY_ljzSrAUO-BzxDqK9yT-HB0
     gN1TdLw93Jsj2vkIHsdQOMmVbullSyjK66OAodsKV-DEPP2EUPHA7_iNu6HwHoOaa
     SJvtUhBaiYirIe8_-ufIpfZfRxZbQdrU7uIsD78Fw8JhBcA"}
             ],
           "ContentMetaData":"ewogICJVbmlxdWVJZCI6ICJOQ1FCLVE1TDItQU
     ZCSC1OQjdFLUZFSTctM1FGRS1aT05TIiwKICAiTWVzc2FnZVR5cGUiOiAiTWVzc2F
     nZUNsYWltIiwKICAiY3R5IjogImFwcGxpY2F0aW9uL21tbS9vYmplY3QiLAogICJD
     cmVhdGVkIjogIjIwMjEtMDktMjBUMTg6MTY6MzlaIn0",
           "SequenceInfo":{
             "Index":1,
             "TreePosition":0},
           "Received":"2021-09-20T18:16:40Z"},
         "ewogICJNZXNzYWdlQ2xhaW0iOiB7CiAgICAiTWVzc2FnZUlkIjogIk5DUU
     ItUTVMMi1BRkJILU5CN0UtRkVJNy0zUUZFLVpPTlMiLAogICAgIlNlbmRlciI6ICJ
     hbGljZUBleGFtcGxlLmNvbSIsCiAgICAiUmVjaXBpZW50IjogIm1ha2VyQGV4YW1w
     bGUuY29tIiwKICAgICJQdWJsaWNhdGlvbklkIjogIkVCUUktVDJGVS1MUDRHLUtJR
     lEtUE1ZSS1WNlhILVBaTEIiLAogICAgIlNlcnZpY2VBdXRoZW50aWNhdGUiOiAiQU
     NLWC1EVFlLLVRNVkQtVDdRNS1GREs2LUlKUjItREhORiIsCiAgICAiRGV2aWNlQXV
     0aGVudGljYXRlIjogIkFEWkctVFZHRS1EUFFQLTRRNFgtRUJENy1QVVNRLUpUVE8i
     fX0",
         {}
         ]}}

6.6.  Cryptographic

   The Operate transaction is used to perform one or more cryptographic
   operations using private key material recorded in the Threshold
   Catalog.  Such operations typically represent one part of a threshold
   key operation divided between the service and a device connected to
   an account.

   As with all operations involving the Access catalog, the request MUST
   meet the authentication criteria specified by the catalog entry.
   These typically include the request being authenticated by a specific
   key.Key Agreement




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   "CryptographicOperationKeyAgreement" is used to request a threshold
   key agreement operation on a specified public key.

   Alice added Bob to groupw@example.com as a member.  This resulted in
   Bob receiving the invitation described in section ??? and the
   following access entry being added to the Access catalog of the group
   account:

   {
     "CatalogedAccess":{
       "Capability":{
         "CapabilityDecryptServiced":{
           "Id":"MCPZ-HDVM-PCDX-BRN4-XODS-XA5Z-42H5",
           "Active":true,
           "GranteeUdf":"bob@example.com",
           "EnvelopedKeyShare":[{
               "enc":"A256CBC",
               "kid":"EBQL-ITZG-2R6Q-TMF3-YDDA-3N4T-VM5U",
               "Salt":"bJ6_c_OfrpkkZZCU-1LtYA",
               "recipients":[{
                   "kid":"MCH3-3HJS-A6QP-RRJ5-HORB-3YTB-J4WU",
                   "epk":{
                     "PublicKeyECDH":{
                       "crv":"X448",
                       "Public":"wNwbGaju-1ja9t61bMotJABp0H3VWQdML0p
     dcAz6-k1In8KJo-vFr6EEQup8esye4HlX3B0SNUcA"}},
                   "wmk":"tYp8TUPingIoHyHsWvfRnpZNlXFesw9jUenfLC0LLj
     ShzQJlgWfU7g"}
                 ],
               "ContentMetaData":"ewogICJNZXNzYWdlVHlwZSI6ICJLZXlEYX
     RhIiwKICAiY3R5IjogImFwcGxpY2F0aW9uL21tbS9vYmplY3QiLAogICJDcmVhdGV
     kIjogIjIwMjEtMDktMjBUMTg6MTY6MTdaIn0"},
             "xw-RW7CvLuJl9zhDJxcbMw2UeTPuVU637VrHpgo3pcAMaOq-pVknNr
     xDMRFE3MnpSseqwKCepc2_489f3GZLl0unDhPnfrXrFaX4Mu54eEZlLCJ-_6ujksg
     lfMvvs8_elodspsKfaYbsApw1Qwazfy840AXWJkIFmzt2u43DtpPMhQpDrF46SD6D
     1fcZ48gcgZzA66C-ompAfrpF_7gTyjiizK5pGnjfMHObPqNlD3M2xEGDxGD6sQBet
     kEJZhD9L95Nxbw8bNzm4e0a8Bk--NWyzPL89OICTJrcMUpdb9Hw3NVMWpG0GvneZ-
     ItdMU44V8SJCaiRznm-Uk0P1d4kqJzGbg4tfaqrVYi4dOLq0sdXQJRe5elNTnceYR
     bzMF4wqsFjkh7LpaKUsiYNp4dmy4w7N4t9f5hXXw6o6zPk3y5fpCmK6zghcyw3hJJ
     u-nkANieu0I-xWNei7Pkn6fQKHJaf2l6igdcDC-PPxozKpi44FIMx9tjawkdlvQHA
     rAefxTiy8uCZWyYhhWZyKk2o8O9LN5jI2bAfHMUAJPp5-SMM0dT-UqTJHnD5PWWaA
     bPba2EHeQBWq39vLsmQr52GJC_ogtPWO--CEfhZYdDHCgRD96DFdJee9UUspehU2b
     6NLhptnz-Z84-lsQL659JPx-AtiYOs8vgzTgtOZRQMNpmeQ4UIwsWVTGhfdEOfAb6
     WT1kZKS7jDTRiQfz7JLAgw"
             ]}}}}

   The private key (in this case a key share) is encrypted under the
   service key.



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   To make use of the access entry, a request is made that specifies the
   key share to be operated on and the public key parameters to perform
   the agreement with.

   The request payload:

   {
     "OperateRequest":{
       "AccountAddress":"groupw@example.com",
       "Operations":[{
           "CryptographicOperationKeyAgreement":{
             "KeyId":"MCPZ-HDVM-PCDX-BRN4-XODS-XA5Z-42H5",
             "PublicKey":{
               "PublicKeyECDH":{
                 "crv":"X448",
                 "Public":"DdA69XYL5v6HgeNEPLql1dpKqdEwoAlKJEF1AbRqR
     Fnf1GUqiEm7Bg8jdCFhE6weFkArPQspXzGA"}}}}
         ]}}

   The service checks to see if the request is authorized and if so,
   performs the operation and returns the result:

   {
     "OperateResponse":{
       "Status":201,
       "StatusDescription":"Operation completed successfully",
       "Results":[{
           "CryptographicResultKeyAgreement":{
             "KeyAgreement":{
               "KeyAgreementECDH":{
                 "Curve":"X448",
                 "Result":"8ki73pVcpL3IcSt5ocXVHxVeWS-tb6ZPgTU2ZVH_c
     ltOQeDD2HBesbZWIbsWBhuGyFaNt8H0npqA"}}}}
         ]}}

   *Future*: Currently, the access catalog is encrypted under the
   service encryption key.  It would be better to encrypt the catalog
   under an encryption key specified by the service during the process
   of account binding.  This would allow a service to assign a unique
   encryption key to each account and limit access to that key to the
   hosts servicing that specific account.

6.6.1.  Generate Key Shares

   Generation of threshold key shares is planned but not currently
   supported.





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6.6.2.  Threshold Sign

   Threshold signature is planned but not currently supported.

6.7.  Messaging

   Mesh Messaging is an asynchronous messaging service that allows
   exchange of information between devices connected to a Mesh account
   and between Mesh users.

   To enable effective abuse mitigation, Mesh Messaging enforces a four-
   corner communication model in which all outbound and inbound messages
   pass through a Mesh Service which accredits and authorizes the
   messages on the user's behalf.

   (Artwork only available as svg: No external link available, see
   draft-hallambaker-mesh-protocol-10.html for artwork.)

               Figure 2: The Mesh Four Corner Messaging Model

   The Post transaction is only used to exchange messages between
   services.  The client sends and receives messages through
   interactions with the outbound and inbound spools of the account.

6.7.1.  Sender.

   To send a message, the client creates the Mesh Message structure,
   encapsulates it in a DARE Message and appends the message to the
   "Outbound" spool of the account using the Transact operation..

   The DARE Message MUST be signed under the account signature key.

   The Mesh Service receiving the message from the user's device MAY
   attempt immediate retransmission or queue it to be sent at a future
   time.  Mesh Services SHOULD forward messages without undue delay.

6.7.2.  Outbound Service

   The Post transaction forwarding the message to the destination
   service carries the same payload as the original request but is
   authenticated by the service forwarding it.  This authentication MAY
   be my means of either profile or ticket authentication.

   >>>> Unfinished ProtocolPostServiceService

   [Not Yet Implemented]





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   After the message has been sent, the service updates the message
   status on the outbound spool.

   Services SHOULD implement Denial of Service mitigation strategies
   including limiting the maximum time taken to complete a transaction
   and refusing connections from clients that engage in patterns of
   behavior consistent with abuse.

   The limitation in message size allows Mesh Services to aggressively
   time out connections that take too long to complete a transaction.  A
   Mesh Service that hosted on a 10Mb/s link should be able to transfer
   20 messages a second.  If the service is taking more than 5 seconds
   to complete a transaction, either the source or the destination
   service is overloaded or the message itself is an attack.

   Imposing hard constraints on Mesh Service performance requires
   deployments to scale and apply resources appropriately.  If a service
   is attempting to transfer 100 messages simultaneously and 40% are
   taking 4 seconds or more, this indicates that the number of
   simultaneous transfers being attempted should be reduced.
   Contrawise, if 90% are completed in less than a second, the number of
   threads allocated to sending outbound messages might be increased.

6.7.3.  Inbound Service

   The inbound service MUST subject inbound messages to Access Control
   according to the credentials presented in the DARE Message payload.

   After verifying the signature and checking that the key is properly
   accredited in accordance with site policy, the service applies
   authorization controls taking account of:

   *  The accreditation of the sender

   *  The accreditation of the transmitting Service

   *  The type of Mesh Message being sent

   *  User policy as specified in their Contact Catalog

   *  Site policy.

6.7.4.  Recipient

   Messages are received by synchronizing the outbound spool.






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7.  Message Interactions

   Message interactions are asynchronous interactions that occur between
   devices connected to the same account or between accounts.

   All messages are signed by the sender and encrypted under the
   encryption key of the recipient if this is known to the sender.

7.1.  Message PIN Interaction

   The Message PIN Interaction is used to register and validate PIN
   codes used to authenticate certain transactions.  This interaction
   allows a PIN code issued by one device to be consumed by another
   allowing for greater convenience in managing devices or contact
   exchange.

   For example, Alice might delegate the PIN code issue privilege to her
   mobile device without delegating the administration privilege to that
   device.  This would allow Alice to use her mobile device to initiate
   the connection of a large number of devices to her Mesh as her house
   is being built and approve them later using her administrative
   device.

   Use of the Message PIN interaction is optional.  An application that
   issues a PIN code to authenticate a message MAY store the PIN value
   within the application without persisting it to external storage.

   Derivation of the SaltedPin, MessageId and Witness values from their
   respective inputs is described in the Schema Reference
   [draft-hallambaker-mesh-schema].

7.1.1.  Registration

   To register a PIN code to an "Account", a device:

   *  Generates the "PIN" code value

   *  Calculates the "SaltedPin" value for the specified "Action"

   *  Calculates the "PinId" binding the specified "SaltedPin"to the
      "Account".

   *  Creates and signs "MessagePin" containing the "SaltedPin",
      "Action" and "Account" values with the "MessageId" value "PinId".

   *  Appends the "MessagePin"value to the "Administration" Spool of the
      "Account".




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   Note that this construction provides limited protection against
   forgery attacks by a party with access to the "MessagePin".  A party
   with such access can use it to construct the witness value required
   to authenticate a request.

   PIN Code values consist of an opaque sequence of octets represented
   as a UDF nonce value.  Codes are presented in canonical UDF form,
   i.e. Base32 encoding separated into groups of 4 characters.  The PIN
   value is converted to binary form for calculation of the "SaltedPin",
   thus ensuring that the canonical form of the PIN value is used.

7.1.2.  Authentication

   The PIN Code value is passed out of band to a user who will enter it
   into a device to authenticate a request made to the issuer.

   A request that MAY be validated by means of a PIN is a subclass of
   MessagePinValidated and contains the following fields:

   AuthenticatedData  A DARE Envelope containing the data that is
      authenticated.

   ClientNonce  A nonce value used to prevent certain replay attacks.

   PinId  Digest value binding the "SaltedPin"to the "Account".

   PinWitness  Witness value calculated as KDF (Device.UDF +
      AccountAddress, ClientNonce)

   The device uses the PIN code and Action identifier corresponding to
   the desired request to calculate the "SaltedPin" value in the same
   manner as during registration.  This value is then used to calculate
   the "PinId" and "PinWitness" values.

7.1.3.  Validation

   The PIN code is validated by performing the steps of:

   *  Calculating the "SaltedPin" value from the PIN code and "Action"

   *  Calculating "PinId" from "SaltedPin" and "Account"

   *  Retrieving a "MessagePin" from the Administration spool with the
      "MessageId" "PinId".

   *  Calculating the "PinWitness" value from "SaltedPin", "ClientNonce"
      and "AuthenticatedData" and checking this matches the value
      specified in the message.



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   *  Performing the requested action.

   *  Posting a "Complete" message to the "Administration" Spool of the
      "Account" marking the PIN code as used.

   This process can fail at multiple points resulting in different error
   results:

   "PinInvalid"  No PIN code is specified, the Pin code indicates an
      unsupported algorithm or the calculated "PinWitness" does not
      match the one specified by the request.

   "PinUsed"  The PIN code has been used previously.

   "PinExpired"  The PIN code is no longer valid.

   Note that in the case that an attempt is made to reuse a PIN, it is
   not automatically the case that the first use of the PIN was the one
   that was valid and only the second attempt was invalid.
   Implementations SHOULD alert the user to the attempted re-use so that
   this possibility can be considered and appropriate action taken.

7.1.4.  Example

   Alice connects a device using a QR code presented by her
   administrative device.

   The administration device creates a PIN code and records it to the
   Local spool.  The message specifies the salted pin value used to
   verify attempts to use the PIN, the action for which it is
   authorized.  Since this PIN has been issued to authorize a device
   connection, the roles for which the device are authorized as well.
   This allows the connection request to be accepted without asking for
   further input from the user.

   {
     "MessagePin":{
       "MessageId":"AAAR-P66O-KGTI-QY6C-CXIW-OMCV-WQZI",
       "Account":"alice@example.com",
       "Expires":"2021-09-21T18:16:18Z",
       "Automatic":true,
       "SaltedPin":"ACZI-EF2U-AAIY-R5MY-KXZ6-UYAF-NUSV",
       "Action":"Device",
       "Roles":["threshold"
         ]}}






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7.2.  Completion Interaction

   Completion messages are dummy messages that are added to a Mesh Spool
   to mark a change the status of messages previously posted.  Any
   message that is in the inbound spool and has not been erased or
   redacted MAY be marked as "read", "unread" or "deleted".  Any message
   in the outbound spool MAY be marked as "sent", "received" or
   "deleted".

   Services MAY erase or redact messages in accordance with local site
   policy.  Since messages are not removed from the spool on being
   marked deleted, they may be undeleted by marking them as read or
   unread.  Marking a message deleted MAY make it more likely that the
   message will be removed if the sequence is subsequently purged.

   After using the PIN code to authenticate connection of a device in
   the previous example, the corresponding MessagePin is marked as
   having been used by appending a completion message to the Local
   spool.

   {
     "MessageComplete":{
       "MessageId":"NAHJ-Q4GZ-SL2H-TXDL-55SD-YDY6-EA72",
       "References":[{
           "MessageId":"AAAR-P66O-KGTI-QY6C-CXIW-OMCV-WQZI",
           "ResponseId":"MB3U-D5WR-CRBE-PM3W-BXKC-WJL7-7QMZ",
           "Relationship":"Closed"}
         ]}}

   The completion message is added to the spool in the same upload
   transaction that adds the device to the device catalog.  This ensures
   that both operations occur or neither occurs.

7.3.  Contact Exchange Interaction

   The contact exchange interaction is used to support unilateral or
   mutual exchange of contact information.  Contact exchange has three
   functions in the Mesh:

   *  To exchange public key information to allow encryption of messages
      sent to and verification of signatures on messages sent from the
      contact subject.

   *  To exchange contact information allowing use of other
      communication protocols (e.g. telephone, SMS, xmpp, SMTP, OpenPGP,
      S/MIME, etc).





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   *  To request that the recipient grant privileges to accept certain
      types of messages from the contact subject.

   Registration of the subject's contact information in a registry
   service eliminates the need for the first of these functions but not
   the other two.  To prevent abuse, every Mesh Message is subject to
   access control and a Mesh service will only accept a message from a
   sender if there is an entry in the Threshold Catalog of the account
   that expressly permits delivery of messages of the specified type
   that are authenticated by an authorized signature key.

   The communication of unsolicited information afforded by the contact
   exchange interaction is deliberately limited so that a majority of
   users can accept contact exchange requests without prior
   authorization.  It is however likely that some users will receive a
   considerable volume of requests forcing them to require contact
   requests be authorized through some form of third party
   accreditation.

7.3.1.  Remote

   The Remote Contact Exchange transaction consists of a sequence of
   "MessageContact" messages sent from the initiator to the responder,
   responder to the initiator, etc.  While there is in principle no
   limit on the number of messages exchanged, most exchanges will be
   completed in three exchanges or less:

   Initiator to Responder  Contains Initiator contact data without
      authentication context from the exchange.

   Responder to Initiator (optional)  Contains Responder contact data
      authenticated under a PIN challenge presented in the previous
      message.

   Initiator to Responder (optional)  Contains Initiator contact data
      authenticated under a PIN challenge presented in the previous
      message.

   Each message provides the recipient with additional information which
   MAY motivate the recipient to provide additional contact information
   to the sender.

   {
     "MessageContact":{
       "MessageId":"NDAP-F3KS-HNFO-7I3L-2ZHA-IGKR-3RGZ",
       "Sender":"bob@example.com",
       "Recipient":"alice@example.com",
       "AuthenticatedData":[{



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           "dig":"S512",
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         {
           "signatures":[{
               "alg":"S512",
               "kid":"MDA2-VJOQ-HJBA-FKOA-3JPR-RYJS-WT6B",
               "signature":"W-v3lDGsU3UTItk_uqMIHvmjU8D6Fdy8aW3z1UmC
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     -3S85kOuc-WNsFOYNS0HMRTNk0mXjpO2Qowxckrh0jd0ScA"}
             ],
           "PayloadDigest":"f-lu2tT6O_b1V2ULswnlqRUbZZ_eBWuq72vdf7vd
     -ls389x5cjirQZ6I5Y4GStnQke3IMwmnpNAkp8O7fATksA"}
         ],
       "Reply":true,
       "Subject":"alice@example.com",
       "PIN":"ADN6-CJ3X-KEFJ-BMMU-TKN3-J3JS-73ZA"}}

   The Mesh Contact Exchange transaction does not provide for validation
   of the contact information beyond the binding to the Mesh Account
   Address used to perform the exchange.

7.3.2.  PIN

   Contact exchange requests MAY be authenticated by a PIN code.
   Initial contact exchange requests SHOULD include a PIN code value
   that can be used to authenticate a response (if given).  PIN codes
   MAY also be exchanged out of band.





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   A "MessageContact" authenticated by means of a PIN code is
   authenticated as described in the PIN Interaction section above.

7.3.3.  EARL

   A "MessageContact" message MAY be published as an EARL.  This allows
   contact data to be presented to the recipient on a printed document
   such as a business card in machine readable format such as a QR code.

7.4.  Group Invitation

   The "GroupInvitation" interaction is used to invite a recipient to
   join a Mesh Group.  The interaction is essentially a form of contact
   exchange except that a sender SHOULD NOT send group invitations
   unless there is an existing relationship.  Thus the 'first trust'
   issues intrinsic to the contact exchange interaction do not apply.

   The message specifies the group name and the contact entry for the
   group.  The contact entry includes the "CapabilityDecryptServiced"
   used to decrypt messages sent to the group when combined with
   information provided by the threshold service for the group.

   Receipt of a "GroupInvitation" message does not require a response.

   {
     "GroupInvitation":{
       "MessageId":"NAAD-L4WJ-WCTM-3NOB-R56R-4O76-O3AO",
       "Sender":"alice@example.com",
       "Recipient":"bob@example.com",
       "Contact":{
         "ContactPerson":{
           "Anchors":[{
               "Udf":"MD5F-JZHZ-NAEI-LTUH-RDNE-YH5R-W7FI",
               "Validation":"Self"}
             ],
           "NetworkAddresses":[{
               "Address":"groupw@example.com",
               "EnvelopedProfileAccount":[{
                   "EnvelopeId":"MD5F-JZHZ-NAEI-LTUH-RDNE-YH5R-W7FI",
                   "dig":"S512",
                   "ContentMetaData":"ewogICJVbmlxdWVJZCI6ICJNRDVGLU
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     ICAgICJBY2NvdW50RW5jcnlwdGlvbiI6IHsKICAgICAgIlVkZiI6ICJNQ05ILVpaQ
     zMtSlVNNC1CRU1ULUVJSE0tQVZUVy1QRURSIiwKICAgICAgIlB1YmxpY1BhcmFtZX
     RlcnMiOiB7CiAgICAgICAgIlB1YmxpY0tleUVDREgiOiB7CiAgICAgICAgICAiY3J
     2IjogIlg0NDgiLAogICAgICAgICAgIlB1YmxpYyI6ICJMU3BQUmI1ZVV2OE82NmFD
     MW5iQnFERG5ZeTIxY0tFZ25OUEFmOXUteE1RUUl1SEJ6ck9TCiAgYUY2QXdaRVZ6a
     2w0R3NlMWpoYlVheXdBIn19fSwKICAgICJBZG1pbmlzdHJhdG9yU2lnbmF0dXJlIj
     ogewogICAgICAiVWRmIjogIk1DWlQtRVRTRi1QREdXLUxBVEwtRjczQi1PU1NRLUZ
     TNEIiLAogICAgICAiUHVibGljUGFyYW1ldGVycyI6IHsKICAgICAgICAiUHVibGlj
     S2V5RUNESCI6IHsKICAgICAgICAgICJjcnYiOiAiRWQ0NDgiLAogICAgICAgICAgI
     lB1YmxpYyI6ICJCN2trX2ZxNVhQcVZJYURIYl85Vmd1VWRIWXFSckFDaWtxMllXS3
     hzOTh3M2NoRnBTLVM4CiAgOGx4OThsQ29VSFF3X3hKVGdZWG1jTFlBIn19fX19",
                 {
                   "signatures":[{
                       "alg":"S512",
                       "kid":"MD5F-JZHZ-NAEI-LTUH-RDNE-YH5R-W7FI",
                       "signature":"tfrE8RJDJ2v7d8OTOwsc8NGmsPKPVk2l
     nqLRDr5a9J0na4NN-edwYkgKb3OfBPRo-zHz_WrBsIKAav3yx28G-_Y2hJz02dUTW
     ySnhKAco2LMYuL3sJeRiN0ob-iytd8AArp-p2DM2iSpP5VbdQoktQgA"}
                     ],
                   "PayloadDigest":"wNDBikTV6DpDsFLzjTMEap2HDzbdb4mp
     aq70CCrQGkCe2FnMJN5yY_bv6U1zAAU1XKnnJuZKdgkC6tyiAxCcdg"}
                 ],
               "Protocols":[{
                   "Protocol":"mmm"}
                 ],
               "Capabilities":[{
                   "CapabilityDecryptPartial":{
                     "Id":"MCNH-ZZC3-JUM4-BEMT-EIHM-AVTW-PEDR",
                     "EnvelopedKeyShare":[{
                         "enc":"A256CBC",
                         "kid":"EBQG-6BCL-F7KX-JZUA-4VSE-D6UJ-Y3HL",
                         "Salt":"VWhAekk002Mkb6XZnUuUAQ",
                         "recipients":[{
                             "kid":"MCKI-SCOD-D47B-GELC-OA4G-WG7N-UEJV",
                             "epk":{
                               "PublicKeyECDH":{
                                 "crv":"X448",
                                 "Public":"W6N-91FWVxf5OzSjoasu68NGz
     kNUN6L5ajUTZQUGr6idoHdljYR4VoeakJ_3tbNekCd8gOvSaNqA"}},
                             "wmk":"b9t5G_QyPhP2HG9DhEAh6rXR_KKJrENV
     qRoELseDh7FY-px4FzZfCQ"}
                           ],
                         "ContentMetaData":"ewogICJNZXNzYWdlVHlwZSI6
     ICJLZXlEYXRhIiwKICAiY3R5IjogImFwcGxpY2F0aW9uL21tbS9vYmplY3QiLAogI
     CJDcmVhdGVkIjogIjIwMjEtMDktMjBUMTg6MTY6MTdaIn0"},



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                       "TEiOU1Tb3ofuVFTj1VgkKg3nC_LLdB38JN70_GbYkBnH
     ZsL4FFCmwMCrh7UCw88RJk7dyxcKpCW_SN9MENzUFjM1zJpSvwgYu5Udiy-gFYi7B
     chUlBwwf9yX_4UjlNM5-BezyxD8cM3oYTHlEAGfXg8loYAZ4D7DV562jAgQbJ_Pc-
     TVAO91YnLhk86AMaCyDKg0F76rF6ExiZeUY9MgTXlKryvNF6oPRIzXPe09SkyaXu5
     9KzSo4vML3ZDtpAKdbuqTGQaQ-f0l-ZSFDqIu1tOXSRU5AQR13ePU3VTbowXY9c8r
     mLQFk3Z0m27LB2knJ5973hirNFGoaj1zxT4RC4bStyp8wmtGtWsle5OvTPzF-GW7W
     ye0f3F5NAWPjYzX3KSiO6HfWjSqQp7uy0xBngJU5oj1CENcpFtnZ5tiZPtIF2-uSy
     Brxa04Y7SgLjliGyiTqZEiR60EC8_S6PQjvb4GLrOLaVGRxo8IpcbMlOD6d1EEREU
     cEg8bezF80zL3RIoCsDvpwEuDa9wWMZvdupbmPOIpbT0GLtdsDlIZK_78X9Gjr_eh
     Fsiq-8qRdeUySue8SIbm8HSCs9YTMACAabwqu0PtalQxc7603IYEzxWeTCvnIwZtC
     LoFeE27Pt70zTARey6ql6HNJLeP4-P3BSCRSLnC5e31oCiMbAMCQRCcXhF2YGpF1r
     OK9nw4cNxi_qnYBCdd0_7R7m0IdDPadg"
                       ]}}
                 ]}
             ]}}}}

7.5.  Confirmation Interaction

   The confirmation interaction consists of a "RequestConfirmation"
   message from the initiator followed by a "ResponseConfirmation" from
   the responder.

   The "RequestConfirmation" message specifies the action that is
   requested.

   The "ResponseConfirmation" message contains the enveloped
   RequestConfirmation message signed by the initiator and the
   disposition of the responder, "Accept = true" if the request is
   accepted and "Accept = false" otherwise.

   The service sends out the following request:

   {
     "RequestConfirmation":{
       "MessageId":"NAFH-QPYP-5OAV-WXPX-RCKO-KIKS-RYJG",
       "Sender":"console@example.com",
       "Recipient":"alice@example.com",
       "Text":"start"}}

   Alice accepts the request and returns the following response:











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   {
     "ResponseConfirmation":{
       "MessageId":"MBQO-USUV-X27A-CFLD-RXKE-LZMD-GT7T",
       "Sender":"alice@example.com",
       "Recipient":"console@example.com",
       "Request":[{
           "EnvelopeId":"MACN-R7IW-JPYU-XLMI-6KPN-5I3W-3WB4",
           "ContentMetaData":"ewogICJVbmlxdWVJZCI6ICJOQUZILVFQWVAtNU
     9BVi1XWFBYLVJDS08tS0lLUy1SWUpHIiwKICAiTWVzc2FnZVR5cGUiOiAiUmVxdWV
     zdENvbmZpcm1hdGlvbiIsCiAgImN0eSI6ICJhcHBsaWNhdGlvbi9tbW0vb2JqZWN0
     IiwKICAiQ3JlYXRlZCI6ICIyMDIxLTA5LTIwVDE4OjE2OjE0WiJ9",
           "SequenceInfo":{
             "Index":4,
             "TreePosition":6201},
           "Received":"2021-09-20T18:16:15Z"},
         "ewogICJSZXF1ZXN0Q29uZmlybWF0aW9uIjogewogICAgIk1lc3NhZ2VJZC
     I6ICJOQUZILVFQWVAtNU9BVi1XWFBYLVJDS08tS0lLUy1SWUpHIiwKICAgICJTZW5
     kZXIiOiAiY29uc29sZUBleGFtcGxlLmNvbSIsCiAgICAiUmVjaXBpZW50IjogImFs
     aWNlQGV4YW1wbGUuY29tIiwKICAgICJUZXh0IjogInN0YXJ0In19",
         {}
         ],
       "Accept":true}}

8.  Device Connection Interactions

   Connection of a device to a Mesh Account combines synchronous and
   asynchronous elements and therefore uses a combination of Mesh
   Service Protocol and Mesh Messaging interactions.

   Four connection interactions are currently defined support connection
   of devices with different affordances:

   Witness Authenticated  For connecting devices that provide data entry
      and display affordances and are connected to a network.  The
      account the device is to be connected to is entered into the
      device which displays a witness code.  This code is then compared
      with a code displayed on the administration device to authenticate
      the request, after which both devices can complete the
      interaction.

   PIN Authenticated  A variation of the Witness Authenticated
      interaction in which the connection process is initiated by
      creating a PIN value which is communicated to the device by some
      out of band means and used to authenticate the connection request.

   Dynamic QR Code (PIN) Authenticated  For connecting devices that





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      provide a camera affordance.  The user sets the administration
      device into 'add device' mode, causing a QR code to be displayed.
      The QR code is scanned by the device being connected after which
      both devices can complete the interaction.  Implementation of this
      mechanism is identical to the PIN authenticated scheme except that
      the PIN code is presented to the connecting device by means of a
      QR code.

   Preconfigured (Static QR Code Authenticated)  For connecting devices
      that have been preconfigured with a device profile identified by
      means of a QR Code containing an EARL.  The QR code is scanned by
      the administration device after which both devices can complete
      the interaction.

   Each of these interactions provide strong mutual authentication with
   minimal user effort.

   The witness authenticated connection interaction is intended for use
   in cases in which the device is already connected to a network.  The
   QR code interactions are intended to provide support for acquisition
   of networking capabilities as part of the connection process.  These
   functions are not currently specified.  The Static QR Code
   Authenticated interaction is intended to support Internet of Things
   (IoT) devices which provide minimal interaction affordances.

   In each case, the objectives of the device connection interaction are
   the same:

   *  Mutually authenticate the onboarding device and the Mesh such that
      the connection interaction only completes if both sides acquire
      the authentic profile of the other.

   *  To provision the onboarding device with the Mesh ProfileAccount,
      and an ActivationDevice and ConnectionDevice record allowing the
      device to interact as a member of the Mesh with the set of rights
      specified by the user.

   *  To create a CataloguedDevice record and append it to the Device
      catalog of the account to allow the device to be managed within
      that account.

   *  (optional) to acquire networking capabilities to allow the above
      to be completed.

   The connection of the device to the Mesh Account is achieved through
   the creation of the ActivationDevice, ConnectionDevice and
   CataloguedDevice records described in
   [draft-hallambaker-mesh-schema].  These are created by the



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   administration device in the third phase of each of the connection
   interactions described below and acquired by the onboarding device in
   the fourth phase.

8.1.  Witness/PIN Authenticated

   The witness authenticated, PIN authenticated, and Dynamic QR code
   interactions all follow a common interaction pattern.

   The Dynamic QR Code (PIN) Authenticated interaction comprises four
   phases as follows:

   Phase 1: Issue of PIN credential (PIN and Dynamic QR code only)  A
      PIN code is created and registered with the PIN Registration
      interaction described earlier and transmitted to the user by an
      out of band communication.  In the case of the Dynamic QR code
      interaction, this is a QR code that is scanned by the connecting
      device.

   Phase 2: Onboarding Device Request to Service  The onboarding device
      creates a RequestConnect message.  In the PIN authenticated and
      Dynamic QR Code interactions, the RequestConnect is authenticated
      by the Device Authentication key and the PIN issued earlier.  In
      the Witness Authenticated interaction, it is authenticated by the
      Device Authentication key alone.

      The onboarding device presents the RequestConnect message to the
      service by means of a Connect operation to the service servicing
      the account.  This results in the exchange of the account and
      device profiles and the computation of a witness value from the
      two profile fingerprints and two nonce values specified by the
      onboarding device and the service.  An AcknowledgeConnection
      message is posted to the Inbound spool of the account and returned
      to the connecting device.

   Phase 3: Administration Device Acceptance  The account holder
      authenticates RequestConnect message and uses an administrative
      device to accept or reject the connection request.

      If the RequestConnect message has been authenticated by a PIN
      code, the connection request can be accepted automatically without
      additional user interaction.

   Phase 4: Onboarding Device Completion  The onboarding device
      periodically polls the service for acceptance of the request by
      the administration device using the Complete transaction.





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   The use of the PIN code to authenticate the request message is shown
   in $$$$.

   The PIN code MAY be presented to the onboarding device in any format
   accepted by the device.  Administration MAY support presentation of
   the account address PIN code as a URI code.  Administration devices
   SHOULD support presentation of the account address PIN code as a QR
   code containing the corresponding URI.

8.1.1.  Phase 1:

   Alice> account pin /threshold
   PIN=ABYY-TYLH-XENK-57RH-6PMF-MAE2-JU
    (Expires=2021-09-21T18:16:18Z)

   The registration of this PIN value was shown earlier in section $$$

   The URI containing the account address and PIN is:

   mcu://alice@example.com/ABYY-TYLH-XENK-57RH-6PMF-MAE2-JU

8.1.2.  Phase 2:

   The onboarding device scans the QR code to obtain the account address
   and PIN code.  The PIN code is used to authenticate a connection
   request:

   Alice3> device request alice@example.com /pin ^
       ABYY-TYLH-XENK-57RH-6PMF-MAE2-JU
      Device UDF = MBJ4-CDEK-6JA2-WGKY-4C2Z-VSYP-KOFM
      Witness value = CC5N-J27O-DR3W-WTQI-R3JB-NJZP-745V

   The device generates a RequestConnect message as follows:

   {
     "RequestConnection":{
       "MessageId":"NDYR-FST2-D4V7-7C3Q-QF5R-74TX-NNPC",
       "AuthenticatedData":[{
           "EnvelopeId":"MBJ4-CDEK-6JA2-WGKY-4C2Z-VSYP-KOFM",
           "dig":"S512",
           "ContentMetaData":"ewogICJVbmlxdWVJZCI6ICJNQko0LUNERUstNk
     pBMi1XR0tZLTRDMlotVlNZUC1LT0ZNIiwKICAiTWVzc2FnZVR5cGUiOiAiUHJvZml
     sZURldmljZSIsCiAgImN0eSI6ICJhcHBsaWNhdGlvbi9tbW0vb2JqZWN0IiwKICAi
     Q3JlYXRlZCI6ICIyMDIxLTA5LTIwVDE4OjE2OjE4WiJ9"},
         "ewogICJQcm9maWxlRGV2aWNlIjogewogICAgIlByb2ZpbGVTaWduYXR1cm
     UiOiB7CiAgICAgICJVZGYiOiAiTUJKNC1DREVLLTZKQTItV0dLWS00QzJaLVZTWVA
     tS09GTSIsCiAgICAgICJQdWJsaWNQYXJhbWV0ZXJzIjogewogICAgICAgICJQdWJs
     aWNLZXlFQ0RIIjogewogICAgICAgICAgImNydiI6ICJFZDQ0OCIsCiAgICAgICAgI



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     CAiUHVibGljIjogImdLTzlPWUVSSFJYYWxqM0JBWUpWTUd0aVhTVkt2Qy14ZEgxTj
     B4NGhjWWVjZ3ZGeFdEaG8KICBJdVFzUkRtNC1RMGtKV1FGbGFVZXp6RUEifX19LAo
     gICAgIkVuY3J5cHRpb24iOiB7CiAgICAgICJVZGYiOiAiTURaVS1MVkVRLUZXVkMt
     WlRaUS01WlZNLUhERlctQ01DUiIsCiAgICAgICJQdWJsaWNQYXJhbWV0ZXJzIjoge
     wogICAgICAgICJQdWJsaWNLZXlFQ0RIIjogewogICAgICAgICAgImNydiI6ICJYND
     Q4IiwKICAgICAgICAgICJQdWJsaWMiOiAieUZIaXpKTlplZ2M1d2JUeUlOeXd0LTV
     MQWd5WTZFRkVWLTRSaG9FMVU0ZXRpYUZ1eTFYaAogIDFNZ2l6a080b1h0NmVMVFpk
     Rjdqa2NtQSJ9fX0sCiAgICAiU2lnbmF0dXJlIjogewogICAgICAiVWRmIjogIk1CU
     jMtQ1dRVy1ZWTdTLTQzUUUtTVkySi1JMkI1LUpKWU4iLAogICAgICAiUHVibGljUG
     FyYW1ldGVycyI6IHsKICAgICAgICAiUHVibGljS2V5RUNESCI6IHsKICAgICAgICA
     gICJjcnYiOiAiRWQ0NDgiLAogICAgICAgICAgIlB1YmxpYyI6ICJZWDlWWFI5cm1l
     aVVELXprdkgxcFpWaEt5My1PX1E2Y2dMVF82UmZPZG1qWE9rX0o4UEUzCiAgcm0tV
     DdXVFZfOVd3RFM5VENQY2tXOWdBIn19fSwKICAgICJBdXRoZW50aWNhdGlvbiI6IH
     sKICAgICAgIlVkZiI6ICJNQVdULVdXRFEtTFlaQi1CVUVXLUZBVzItUk9PRi1YUTJ
     IIiwKICAgICAgIlB1YmxpY1BhcmFtZXRlcnMiOiB7CiAgICAgICAgIlB1YmxpY0tl
     eUVDREgiOiB7CiAgICAgICAgICAiY3J2IjogIlg0NDgiLAogICAgICAgICAgIlB1Y
     mxpYyI6ICJWcW0zalhvZXpLenBqXzdHOGd3Y3ZhekNoT2EyMm85emZGNlE4SzlRS2
     M1cEJyeWw2UnItCiAgUW5McmFLaFV1clFRVThiUktQVHBCRGNBIn19fX19",
         {
           "signatures":[{
               "alg":"S512",
               "kid":"MBJ4-CDEK-6JA2-WGKY-4C2Z-VSYP-KOFM",
               "signature":"IIZgcx_hd3h4onMB6yOe7FZyU6k_8SqUsePyCgeM
     DB3w-yAt_f_YRnHcgipESTP1669Ci2mlPh-A_YQoPoDJ1sDz_eROHrxfAX-TTBBlM
     Omizu1UMoUnB1fEr1J75CNxwf9smIMcCxT7O4X1MQoOewsA"}
             ],
           "PayloadDigest":"EeGC-UU1fMXyppG62CiPC7pBNaDw257ubufE3izw
     mBm_8lrMfG_VWnfqMybF8Q3m6V0fWQxQfRWIc-9XpG4-sg"}
         ],
       "ClientNonce":"ZRD9o9z8_Axq6WHESqQ1aQ",
       "PinId":"AAAR-P66O-KGTI-QY6C-CXIW-OMCV-WQZI",
       "PinWitness":"dbD8_k5J6NhZxru6ltO-Y52bm-zPr80EbEbmcwMl6sFpOBx
     VFRVJi6AcI0gU3Wj3mdgAltf9ePxBRyYymjmtWQ",
       "AccountAddress":"alice@example.com"}}

   The service receives the conenct request and authenticates the
   message under the device key.  The service cannot authenticate the
   message under the PIN code because that is not know to the service as
   the service cannot decrypt the local spool.

   Having authenticated the connect request, the service generates a
   random nonce value.  The random nonce together with the device and
   account profiles are used to calculate the witness value.

   The AcknowledgeConnection message is created by the service:






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   {
     "AcknowledgeConnection":{
       "MessageId":"CC5N-J27O-DR3W-WTQI-R3JB-NJZP-745V",
       "EnvelopedRequestConnection":[{
           "EnvelopeId":"MBX4-HVCH-S6LU-BEWP-KAM5-7OYF-F4YG",
           "ContentMetaData":"ewogICJVbmlxdWVJZCI6ICJORFlSLUZTVDItRD
     RWNy03QzNRLVFGNVItNzRUWC1OTlBDIiwKICAiTWVzc2FnZVR5cGUiOiAiUmVxdWV
     zdENvbm5lY3Rpb24iLAogICJjdHkiOiAiYXBwbGljYXRpb24vbW1tL29iamVjdCIs
     CiAgIkNyZWF0ZWQiOiAiMjAyMS0wOS0yMFQxODoxNjoxOFoifQ"},
         "ewogICJSZXF1ZXN0Q29ubmVjdGlvbiI6IHsKICAgICJNZXNzYWdlSWQiOi
     AiTkRZUi1GU1QyLUQ0VjctN0MzUS1RRjVSLTc0VFgtTk5QQyIsCiAgICAiQXV0aGV
     udGljYXRlZERhdGEiOiBbewogICAgICAgICJFbnZlbG9wZUlkIjogIk1CSjQtQ0RF
     Sy02SkEyLVdHS1ktNEMyWi1WU1lQLUtPRk0iLAogICAgICAgICJkaWciOiAiUzUxM
     iIsCiAgICAgICAgIkNvbnRlbnRNZXRhRGF0YSI6ICJld29nSUNKVmJtbHhkV1ZKWk
     NJNklDSk5Ra28wTFVORVJVc3ROa3BCTWkxCiAgWFIwdFpMVFJETWxvdFZsTlpVQzF
     MVDBaTklpd0tJQ0FpVFdWemMyRm5aVlI1Y0dVaU9pQWlVSEp2Wm1sc1oKICBVUmxk
     bWxqWlNJc0NpQWdJbU4wZVNJNklDSmhjSEJzYVdOaGRHbHZiaTl0YlcwdmIySnFaV
     04wSWl3S0lDQQogIGlRM0psWVhSbFpDSTZJQ0l5TURJeExUQTVMVEl3VkRFNE9qRT
     JPakU0V2lKOSJ9LAogICAgICAiZXdvZ0lDSlFjbTltYVd4bFJHVjJhV05sSWpvZ2V
     3b2dJQ0FnSWxCeWIyWgogIHBiR1ZUYVdkdVlYUjFjbVVpT2lCN0NpQWdJQ0FnSUNK
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     1ZBdFMwOUdUU0lzQ2lBZ0lDQWdJQ0pRZFdKc2FXTlFZWEpoYldWMFpYSnpJam8KIC
     BnZXdvZ0lDQWdJQ0FnSUNKUWRXSnNhV05MWlhsRlEwUklJam9nZXdvZ0lDQWdJQ0F
     nSUNBZ0ltTnlkaUk2SQogIENKRlpEUTBPQ0lzQ2lBZ0lDQWdJQ0FnSUNBaVVIVmli
     R2xqSWpvZ0ltZExUemxQV1VWU1NGSllZV3hxTTBKCiAgQldVcFdUVWQwYVZoVFZrd
     DJReTE0WkVneFRqQjROR2hqV1dWalozWkdlRmRFYUc4S0lDQkpkVkZ6VWtSdE4KIC
     BDMVJNR3RLVjFGR2JHRlZaWHA2UlVFaWZYMTlMQW9nSUNBZ0lrVnVZM0o1Y0hScGI
     yNGlPaUI3Q2lBZ0lDQQogIGdJQ0pWWkdZaU9pQWlUVVJhVlMxTVZrVlJMVVpYVmtN
     dFdsUmFVUzAxV2xaTkxVaEVSbGN0UTAxRFVpSXNDCiAgaUFnSUNBZ0lDSlFkV0pzY
     VdOUVlYSmhiV1YwWlhKeklqb2dld29nSUNBZ0lDQWdJQ0pRZFdKc2FXTkxaWGwKIC
     BGUTBSSUlqb2dld29nSUNBZ0lDQWdJQ0FnSW1OeWRpSTZJQ0pZTkRRNElpd0tJQ0F
     nSUNBZ0lDQWdJQ0pRZAogIFdKc2FXTWlPaUFpZVVaSWFYcEtUbHBsWjJNMWQySlVl
     VWxPZVhkMExUVk1RV2Q1V1RaRlJrVldMVFJTYUc5CiAgRk1WVTBaWFJwWVVaMWVUR
     llhQW9nSURGTloybDZhMDgwYjFoME5tVk1WRnBrUmpkcWEyTnRRU0o5Zlgwc0MKIC
     BpQWdJQ0FpVTJsbmJtRjBkWEpsSWpvZ2V3b2dJQ0FnSUNBaVZXUm1Jam9nSWsxQ1V
     qTXRRMWRSVnkxWldUZAogIFRMVFF6VVVVdFRWa3lTaTFKTWtJMUxVcEtXVTRpTEFv
     Z0lDQWdJQ0FpVUhWaWJHbGpVR0Z5WVcxbGRHVnljCiAgeUk2SUhzS0lDQWdJQ0FnS
     UNBaVVIVmliR2xqUzJWNVJVTkVTQ0k2SUhzS0lDQWdJQ0FnSUNBZ0lDSmpjblkKIC
     BpT2lBaVJXUTBORGdpTEFvZ0lDQWdJQ0FnSUNBZ0lsQjFZbXhwWXlJNklDSlpXRGx
     XV0ZJNWNtMWxhVlZFTAogIFhwcmRrZ3hjRnBXYUV0NU15MVBYMUUyWTJkTVZGODJV
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     BnSUNBZ0lsQjFZbXhwWXlJNklDSldjVzB6YWxodlpYcExlbkJxWHpkSE9HZDNZM1p
     oZWtOb1QyRXlNbTg1ZQogIG1aR05sRTRTemxSUzJNMWNFSnllV3cyVW5JdENpQWdV



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     VzVNY21GTGFGVjFjbEZSVlRoaVVrdFFWSEJDUkdOCiAgQkluMTlmWDE5IiwKICAgI
     CAgewogICAgICAgICJzaWduYXR1cmVzIjogW3sKICAgICAgICAgICAgImFsZyI6IC
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         ],
       "ServerNonce":"04cY1MKWI4G8BGEUGQzldw",
       "Witness":"CC5N-J27O-DR3W-WTQI-R3JB-NJZP-745V"}}

   The AcknowledgeConnection message is appended to the Inbound spool of
   the account to which connection was requested so that the user can
   approve the request.  The ConnectResponse message is returned to the
   device containing the AcknowledgeConnection message and the profile
   of the account.

   The device generates the witness value, verifies it against the value
   provided by the server and presents it to the user as seen in the
   console example above.

8.1.3.  Phase 3:

   The user synchronizes their pending messages:



















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   Alice> message pending
   MessageID: CC5N-J27O-DR3W-WTQI-R3JB-NJZP-745V
           Connection Request::
           MessageID: CC5N-J27O-DR3W-WTQI-R3JB-NJZP-745V
           To:  From:
           Device:  MBJ4-CDEK-6JA2-WGKY-4C2Z-VSYP-KOFM
           Witness: CC5N-J27O-DR3W-WTQI-R3JB-NJZP-745V
   MessageID: NCJD-SJE7-VPY7-REZL-HCYI-2QWC-W2ZK
           Group invitation::
           MessageID: NCJD-SJE7-VPY7-REZL-HCYI-2QWC-W2ZK
           To: alice@example.com From: alice@example.com
   MessageID: NAFH-QPYP-5OAV-WXPX-RCKO-KIKS-RYJG
           Confirmation Request::
           MessageID: NAFH-QPYP-5OAV-WXPX-RCKO-KIKS-RYJG
           To: alice@example.com From: console@example.com
           Text: start
   MessageID: NDAP-F3KS-HNFO-7I3L-2ZHA-IGKR-3RGZ
           Contact Request::
           MessageID: NDAP-F3KS-HNFO-7I3L-2ZHA-IGKR-3RGZ
           To: alice@example.com From: bob@example.com
           PIN: ADN6-CJ3X-KEFJ-BMMU-TKN3-J3JS-73ZA
   Alice> account sync /auto
   ERROR - An attempt was made to create an object with an existing obje
   ct identifier

   The administration device determines that the device connection
   request is authenticated by a PIN code.  The PIN code is retrieved
   and the message authenticated.  This is shown in the PIN registration
   interation example in section $$$ above.

   Bug: This command is currently showing superflous pending messages
   due to the failure to clear messages processed in earlier examples.

   The Cataloged device record is created from the public key values
   corresponding to the combination of the public keys in the device
   profile and those defined by the activation:

   [Updates to multiple spools here.]

   >>> ActivationDevice Here

   >>> CatalogedDevice Here









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   {
     "RespondConnection":{
       "MessageId":"MB3U-D5WR-CRBE-PM3W-BXKC-WJL7-7QMZ",
       "Result":"Accept",
       "CatalogedDevice":{
         "DeviceUdf":"MBJ4-CDEK-6JA2-WGKY-4C2Z-VSYP-KOFM",
         "EnvelopedProfileUser":[{
             "EnvelopeId":"MC6L-GFYJ-7EOP-2OWN-24ZJ-4RC7-EXTW",
             "dig":"S512",
             "ContentMetaData":"ewogICJVbmlxdWVJZCI6ICJNQzZMLUdGWUot
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           {
             "signatures":[{
                 "alg":"S512",
                 "kid":"MC6L-GFYJ-7EOP-2OWN-24ZJ-4RC7-EXTW",
                 "signature":"aeCuTY0X-J9_L6HGafZKbg5ZueP6PjoydfQDXB



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     28B0CpGfqhPjTc6bjLF-vZWzSV4wZ9wotFvXyAR_QRXW7EtpbRz4s2j-bdzGR6z0j
     zJGnFWaxUYfAzCoFUHfhUDzJTthMNkQiJ-sUyRyriqaF0HjUA"}
               ],
             "PayloadDigest":"ZPrAcmAuks4uOaLyaHIyrISbFbCuNwXI3h7IVD
     B4hzyitFAsVEg8G5QukhJexWuntd_8f4VwQaAmZnjT3lPEhw"}
           ],
         "EnvelopedProfileDevice":[{
             "EnvelopeId":"MBJ4-CDEK-6JA2-WGKY-4C2Z-VSYP-KOFM",
             "dig":"S512",
             "ContentMetaData":"ewogICJVbmlxdWVJZCI6ICJNQko0LUNERUst
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           {
             "signatures":[{
                 "alg":"S512",
                 "kid":"MBJ4-CDEK-6JA2-WGKY-4C2Z-VSYP-KOFM",
                 "signature":"IIZgcx_hd3h4onMB6yOe7FZyU6k_8SqUsePyCg
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               ],
             "PayloadDigest":"EeGC-UU1fMXyppG62CiPC7pBNaDw257ubufE3i
     zwmBm_8lrMfG_VWnfqMybF8Q3m6V0fWQxQfRWIc-9XpG4-sg"}
           ],
         "EnvelopedConnectionAddress":[{
             "dig":"S512"},



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           "e7QRQ29ubmVjdGlvbkFkZHJlc3N7tA5BdXRoZW50aWNhdGlvbnu0EFB1
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           {
             "signatures":[{
                 "alg":"S512",
                 "kid":"MDPY-AB62-RLL2-FDZF-GHYB-LS2G-HMZX",
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               ]}
           ],
         "EnvelopedConnectionService":[{
             "dig":"S512",
             "ContentMetaData":"ewogICJNZXNzYWdlVHlwZSI6ICJDb25uZWN0
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           {
             "signatures":[{
                 "alg":"S512",
                 "kid":"MDPY-AB62-RLL2-FDZF-GHYB-LS2G-HMZX",
                 "signature":"b9uPvBuiCFiOOWMync3K-kGEMsv8nsSe6P_bJf
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               ],
             "PayloadDigest":"9_otIc37d1dsMnmIm6V6TqizsPRvQU1O3a1XVb
     -0A-CfdGk5m6blY9awr39H6gd547nuhqF-JdMBemwbPIyfJw"}
           ],
         "EnvelopedConnectionDevice":[{
             "dig":"S512",
             "ContentMetaData":"ewogICJNZXNzYWdlVHlwZSI6ICJDb25uZWN0
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     9tApFbmNyeXB0aW9ue7QDVWRmgCJNQVM1LUczTlItRkVHNS1KTkVFLU5HVFQtNTRF



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     Qi1HNE9JtBBQdWJsaWNQYXJhbWV0ZXJze7QNUHVibGljS2V5RUNESHu0A2NydoAEW
     DQ0OLQGUHVibGljiDlS9hxCUejkfMJ_e8tJVThQHG-JqLvrEXWV8zsPj1J4icxh7I
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           {
             "signatures":[{
                 "alg":"S512",
                 "kid":"MDPY-AB62-RLL2-FDZF-GHYB-LS2G-HMZX",
                 "signature":"bv3JbW8GRQu1egN3K01uXFs7paCiLPnZVLzSx9
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               ],
             "PayloadDigest":"ryWXi7qqqFa2kAgjv94kWwiHa3rmnDkuxKSv_n
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           ],
         "EnvelopedActivationDevice":[{
             "enc":"A256CBC",
             "dig":"S512",
             "kid":"EBQA-ORX6-SYUD-OBPD-66UK-UJLF-T7EE",
             "Salt":"P5HCNTSxumoCQDNal1lMpw",
             "recipients":[{
                 "kid":"MDZU-LVEQ-FWVC-ZTZQ-5ZVM-HDFW-CMCR",
                 "epk":{
                   "PublicKeyECDH":{
                     "crv":"X448",
                     "Public":"1hxJpV39-ClXIGUxEJs_9Lh3Z89iMG6BQO0zY
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                 "wmk":"j64N7JuT_Azf6nyreYH_0f6hKXzg3fs0Jyw_7gLbNBT7
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               ],
             "ContentMetaData":"ewogICJNZXNzYWdlVHlwZSI6ICJBY3RpdmF0
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             "PayloadDigest":"96zhY9KlnQJYNfUqOhpspfkrJ-t10yNA3mR4jw



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     Is-AJRkO286wwuaaJlDuDTuxVBHhjlgDlIgw2ybvH6vSwsrQ"}
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Hallam-Baker              Expires 24 March 2022                [Page 79]

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Hallam-Baker              Expires 24 March 2022                [Page 81]

Internet-Draft           Mesh Protocol Reference          September 2021


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             "PayloadDigest":"VKt5nl9KhxQsiN8kp7jDA7xXA3dVDrYNst7d3c
     gYTXVk8Ac8MOMeRyIWmeyTfh50QOWmgR978v-TRyvlgQRsvQ"}
           ]}}}

   This is posted to the local spool.

8.1.4.  Phase 4

   The device periodically polls for completion of the connection
   request using the Complete transaction.

   To provide a final check on the process, the command line tool
   presents the UDF of the account profile to which the device has
   connected if successful:

   Alice3> device complete
      Device UDF = MBJ4-CDEK-6JA2-WGKY-4C2Z-VSYP-KOFM
      Account = alice@example.com
      Account UDF = MC6L-GFYJ-7EOP-2OWN-24ZJ-4RC7-EXTW
   Alice3> account sync

   The completion request specifies the witness value for the
   transaction whose completion is being queried:

   {
     "CompleteRequest":{
       "AccountAddress":"alice@example.com",
       "ResponseID":"MB3U-D5WR-CRBE-PM3W-BXKC-WJL7-7QMZ"}}




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   The Service responds to the complete request by checking to see if an
   entry has been added to the local spool.  If so, this contains the
   RespondConnection message created by the administration device.

8.2.  Preconfigured (Static QR Code)

   The preconfigured device connection interaction is used to connect
   devices that lack affordances such as a display or a keyboard.  It is
   also known as the static QR code interaction because a static QR code
   printed on the device itself is used to connect it to a user's
   account.

   *Future*: Note that this interaction is likely to be changed
   substantially in future revisions of the specification and the Claim/
   PollClaim mechanism removed and replaced with a messaging based
   approach.

   The interaction has five phases:

   Phase 1: Preconfiguration  The device to be onboarded is
      preconfigured with a ProfileDevice and private key information and
      a DeviceDescription posted to a publication service.  This process
      is typically performed during manufacture.  An EARL providing the
      ability to locate and decrypt the description is printed on the
      device itself as a QR code.

   Phase 2: Device description acquisition  The administration device
      acquiring the onboarding device scans the QR code on the device
      and uses this information to obtain the device description by
      means of a Claim operation described above as described in the
      Device Description.

   Phase 3: Administration Device Acceptance  This phase is performed in
      the same manner as the Dynamic QR Code (PIN) Authenticated
      interaction except that the administration device MAY advise the
      device that a connection request is being made by additional means
      described in the device description (e.g.  WiFi, Bluetooth).

   Phase 4: Poll Claim Notification  When connected to a network, the
      preconfigured device periodically attempts to poll the connection
      sources specified to find out if there is a pending request.  If a
      connection request is posted, the device decrypts it to allow it
      to complete the connection process.

   Phase 5: Onboarding Device Completion  This phase is performed in the
      same manner as the Dynamic QR Code (PIN) Authenticated interaction
      except that the administration device requires notice that of the
      pending connection request.



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   The main differences between this connection interaction and the
   witness/PIN connection interactions are that the device is
   preconfigured with the device profile at the time of manufacture and
   the onboarding device MAY be acquiring network configuration
   information during the connection process.

8.2.1.  Phase 1

   The manufacturer preconfigures the device

   Maker> device preconfig
   Device Udf: MCAE-LHYD-7TBQ-LOVT-GPE7-I3PX-6MQ3
   File: EBPB-YSBL-44F5-5ADN-PJHJ-CCJP-EU.medk

   This results in the creation of the device preconfiguration record to
   be published to the Publication catalog of the device manufacturer:

   {
     "DevicePreconfiguration":{
       "EnvelopedProfileDevice":[{
           "EnvelopeId":"MCAE-LHYD-7TBQ-LOVT-GPE7-I3PX-6MQ3",
           "dig":"S512",
           "ContentMetaData":"ewogICJVbmlxdWVJZCI6ICJNQ0FFLUxIWUQtN1
     RCUS1MT1ZULUdQRTctSTNQWC02TVEzIiwKICAiTWVzc2FnZVR5cGUiOiAiUHJvZml
     sZURldmljZSIsCiAgImN0eSI6ICJhcHBsaWNhdGlvbi9tbW0vb2JqZWN0IiwKICAi
     Q3JlYXRlZCI6ICIyMDIxLTA5LTIwVDE4OjE2OjMzWiJ9"},
         "ewogICJQcm9maWxlRGV2aWNlIjogewogICAgIlByb2ZpbGVTaWduYXR1cm
     UiOiB7CiAgICAgICJVZGYiOiAiTUNBRS1MSFlELTdUQlEtTE9WVC1HUEU3LUkzUFg
     tNk1RMyIsCiAgICAgICJQdWJsaWNQYXJhbWV0ZXJzIjogewogICAgICAgICJQdWJs
     aWNLZXlFQ0RIIjogewogICAgICAgICAgImNydiI6ICJFZDQ0OCIsCiAgICAgICAgI
     CAiUHVibGljIjogIm84dXk2ZDhiWjRvTnlSQTlvZHNvQWJQSzl0SGVEc3loYWVQNF
     9ia2s3WDdRMHZxSUlPSk0KICBUMy1TU2lBYlVCNzNvNnhiRzVXcEE5U0EifX19LAo
     gICAgIkVuY3J5cHRpb24iOiB7CiAgICAgICJVZGYiOiAiTUIySi1aTVZFLUxXT0wt
     N1dUSi1PVEw0LVkzU0QtWlY1WSIsCiAgICAgICJQdWJsaWNQYXJhbWV0ZXJzIjoge
     wogICAgICAgICJQdWJsaWNLZXlFQ0RIIjogewogICAgICAgICAgImNydiI6ICJYND
     Q4IiwKICAgICAgICAgICJQdWJsaWMiOiAiVTFKbEF0TDdpWk85d2VVZVgzWktQZnB
     3LTc5QW15cnZzVW40b1cweEI3Nk50enF5a0k0QgogIDRYdlNMYkc3ZkdPd1AtY1k5
     Mmo5YXBPQSJ9fX0sCiAgICAiU2lnbmF0dXJlIjogewogICAgICAiVWRmIjogIk1ER
     lAtRVhYRy1CN0g0LUFNNkktTjZDVy1NNFBYLTVXV0EiLAogICAgICAiUHVibGljUG
     FyYW1ldGVycyI6IHsKICAgICAgICAiUHVibGljS2V5RUNESCI6IHsKICAgICAgICA
     gICJjcnYiOiAiRWQ0NDgiLAogICAgICAgICAgIlB1YmxpYyI6ICJ1ek1YcTdwZUZi
     UmVsYklrTERpenQwcW1qWmhKZ0FDdHhvN2J0SDNxVE9DYlV2bmNYMVFrCiAgVXA1d
     WVDMUdfWUZuSnB6d09iZ09DNXNBIn19fSwKICAgICJBdXRoZW50aWNhdGlvbiI6IH
     sKICAgICAgIlVkZiI6ICJNRDJXLVVEQ0stR05BRC1TSzVCLUFUNzUtQ0s2VS1QTEE
     2IiwKICAgICAgIlB1YmxpY1BhcmFtZXRlcnMiOiB7CiAgICAgICAgIlB1YmxpY0tl
     eUVDREgiOiB7CiAgICAgICAgICAiY3J2IjogIlg0NDgiLAogICAgICAgICAgIlB1Y
     mxpYyI6ICIycEctd1dIdmtiUGRxU2RJV1diMTFaWkc2aDJQOWY3WnRGdW1mcFlseV
     RCTy1qWUQ1RHNaCiAgNjZvWFJPUDFkWlV5bU9qUUFsSGUxTE1BIn19fX19",



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         {
           "signatures":[{
               "alg":"S512",
               "kid":"MCAE-LHYD-7TBQ-LOVT-GPE7-I3PX-6MQ3",
               "signature":"ei7ljOVDEL4ZsmntYCuw1hJTzfhVaARcYjQXLoSi
     I3uVOTc8QUu1mfOqxcWqBg_iJaxzLWgol6kAdYmCOXOZLJGeFcqRc8X5cp1yo_u3J
     -RtBg16eT5OrAyyiKMAF-x14V8SZoND3AokujhS6_vn4DcA"}
             ],
           "PayloadDigest":"5fmX2PgCMfBvPkOAI1M3YiDPkT48IxlOlCTFclUN
     suqOmAqSESi5KUOTINgjX_0MMMCFjX5OcCwXTENz1GH-dA"}
         ],
       "EnvelopedConnectionDevice":[{
           "dig":"S512",
           "ContentMetaData":"ewogICJNZXNzYWdlVHlwZSI6ICJDb25uZWN0aW
     9uRGV2aWNlIiwKICAiY3R5IjogImFwcGxpY2F0aW9uL21tbS9vYmplY3QiLAogICJ
     DcmVhdGVkIjogIjIwMjEtMDktMjBUMTg6MTY6MzNaIn0"},
         "ewogICJDb25uZWN0aW9uRGV2aWNlIjogewogICAgIkF1dGhlbnRpY2F0aW
     9uIjogewogICAgICAiVWRmIjogIk1CMkotWk1WRS1MV09MLTdXVEotT1RMNC1ZM1N
     ELVpWNVkiLAogICAgICAiUHVibGljUGFyYW1ldGVycyI6IHsKICAgICAgICAiUHVi
     bGljS2V5RUNESCI6IHsKICAgICAgICAgICJjcnYiOiAiWDQ0OCIsCiAgICAgICAgI
     CAiUHVibGljIjogIlUxSmxBdEw3aVpPOXdlVWVYM1pLUGZwdy03OUFteXJ2c1VuNG
     9XMHhCNzZOdHpxeWtJNEIKICA0WHZTTGJHN2ZHT3dQLWNZOTJqOWFwT0EifX19LAo
     gICAgIlNpZ25hdHVyZSI6IHsKICAgICAgIlVkZiI6ICJNREZQLUVYWEctQjdINC1B
     TTZJLU42Q1ctTTRQWC01V1dBIiwKICAgICAgIlB1YmxpY1BhcmFtZXRlcnMiOiB7C
     iAgICAgICAgIlB1YmxpY0tleUVDREgiOiB7CiAgICAgICAgICAiY3J2IjogIkVkND
     Q4IiwKICAgICAgICAgICJQdWJsaWMiOiAidXpNWHE3cGVGYlJlbGJJa0xEaXp0MHF
     talpoSmdBQ3R4bzdidEgzcVRPQ2JVdm5jWDFRawogIFVwNXVlQzFHX1lGbkpwendP
     YmdPQzVzQSJ9fX0sCiAgICAiRW5jcnlwdGlvbiI6IHsKICAgICAgIlVkZiI6ICJNQ
     jJKLVpNVkUtTFdPTC03V1RKLU9UTDQtWTNTRC1aVjVZIiwKICAgICAgIlB1YmxpY1
     BhcmFtZXRlcnMiOiB7CiAgICAgICAgIlB1YmxpY0tleUVDREgiOiB7CiAgICAgICA
     gICAiY3J2IjogIlg0NDgiLAogICAgICAgICAgIlB1YmxpYyI6ICJVMUpsQXRMN2la
     Tzl3ZVVlWDNaS1BmcHctNzlBbXlydnNVbjRvVzB4Qjc2TnR6cXlrSTRCCiAgNFh2U
     0xiRzdmR093UC1jWTkyajlhcE9BIn19fX19",
         {
           "signatures":[{
               "alg":"S512",
               "kid":"MA6N-NN7E-CNN2-75BX-BGLB-ME6F-7FCH",
               "signature":"ZOLaqvLsui6n-LB5_C_Q3seRS5ilBxiuFFPp_NU9
     1fIF4qQYTh7opYmj8_h3bMuSrCBOCtmYlWgANuzu5LEtH-A_J2jR-euzFV7V3DbFJ
     QwA8gDb9XhuRZF8FV8V0DfmN1l8AVex0Z7q-clZPodLaCcA"}
             ],
           "PayloadDigest":"cBn1RX2qmv9mzrgeUmHN8IhFBLKAmQnMaOUUIxri
     yKS6DWWVyTxNrNi3D-MD-UJH9zXvSX-GPT6F95mZbm658g"}
         ],
       "EnvelopedConnectionService":[{
           "dig":"S512",
           "ContentMetaData":"ewogICJNZXNzYWdlVHlwZSI6ICJDb25uZWN0aW
     9uU2VydmljZSIsCiAgImN0eSI6ICJhcHBsaWNhdGlvbi9tbW0vb2JqZWN0IiwKICA



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     iQ3JlYXRlZCI6ICIyMDIxLTA5LTIwVDE4OjE2OjMzWiJ9"},
         "ewogICJDb25uZWN0aW9uU2VydmljZSI6IHsKICAgICJBdXRoZW50aWNhdG
     lvbiI6IHsKICAgICAgIlVkZiI6ICJNQjJKLVpNVkUtTFdPTC03V1RKLU9UTDQtWTN
     TRC1aVjVZIiwKICAgICAgIlB1YmxpY1BhcmFtZXRlcnMiOiB7CiAgICAgICAgIlB1
     YmxpY0tleUVDREgiOiB7CiAgICAgICAgICAiY3J2IjogIlg0NDgiLAogICAgICAgI
     CAgIlB1YmxpYyI6ICJVMUpsQXRMN2laTzl3ZVVlWDNaS1BmcHctNzlBbXlydnNVbj
     RvVzB4Qjc2TnR6cXlrSTRCCiAgNFh2U0xiRzdmR093UC1jWTkyajlhcE9BIn19fX1
     9",
         {
           "signatures":[{
               "alg":"S512",
               "kid":"MA6N-NN7E-CNN2-75BX-BGLB-ME6F-7FCH",
               "signature":"-fKRQYisB0gxu75Xe0OKC77g2uptgJyzvmLIKIMg
     vXsvn3Gf0BpGlJN6wwNadK4VWHY9HU9z8w-ARK_ozkDLHIUtxwntd_ws0s03AqNLm
     K-Fjc3jf-A7lanS7OeoCAsnXfQ7Kqa91pMHbotBtPvR0RwA"}
             ],
           "PayloadDigest":"__OnArXqFpZbdPVxS1HVHKpKhvJ1nhD8QA0mOLzM
     LOOgEyWe9khDNTY1M35w1rlthBjSLMV_6heRhUhqEi8VoA"}
         ],
       "PrivateKey":{
         "PrivateKeyUDF":{
           "PrivateValue":"ZAAQ-BLGK-V4DZ-ZFV7-QJZY-OOAU-SNMB-4C6Y-57P
   H-L7OQ-A3VF-655A-GYQM-H4SF",
           "KeyType":"MeshProfileDevice"}},
       "ConnectUri":"mcu://maker@example.com/EBPB-YSBL-44F5-5ADN-PJHJ-
   CCJP-EU"}}

   The preconfiguration record is retreived and decrypted by means of an
   EARL:

   QR = {Connect.ConnectEARL}

   The EARL is converted to a QR code and printed on the device.

   The private seed and connection record is provisioned to the device
   to be written to the device firmware:

   >>>> Unfinished ProtocolConnectEARL/device publication

   Oh **** the data published to the spool is simply the encrypted
   ProfileDevice!!!!

8.2.2.  Phase 2 & 3

   The administration device scans the QR code and obtains the Device
   Description using the Claim operation as shown in section $$$$. The
   administration device creates the ActivationDevice and
   CatalogedDevice records and populates the service as before.



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   Alice> account connect ^
       mcu://maker@example.com/EBPB-YSBL-44F5-5ADN-PJHJ-CCJP-EU /web

8.2.3.  Phase 4

   The device polls the publication service until a claim message is
   returned.

   Alice4> device complete
      Device UDF = MCAE-LHYD-7TBQ-LOVT-GPE7-I3PX-6MQ3
      Account = alice@example.com
      Account UDF = MC6L-GFYJ-7EOP-2OWN-24ZJ-4RC7-EXTW

   >> The poll claim result.

8.2.4.  Phase 5

   Completion of the device is the same as before.

9.  Protocol Schema

   HTTP Well Known Service Prefix: /.well-known/mmm

   Every Mesh Portal Service transaction consists of exactly one request
   followed by exactly one response.  Mesh Service transactions MAY
   cause modification of the data stored in the Mesh Service or the Mesh
   itself but do not cause changes to the connection state.  The
   protocol itself is thus idempotent.  There is no set sequence in
   which operations are required to be performed.  It is not necessary
   to perform a Hello transaction prior to any other transaction.

9.1.  Request Messages

   A Mesh Portal Service request consists of a payload object that
   inherits from the MeshRequest class.  When using the HTTP binding,
   the request MUST specify the portal DNS address in the HTTP Host
   field.

9.1.1.  Message: MeshRequest

   Base class for all request messages.

   [No fields]

9.1.2.  Message: MeshRequestUser

   Base class for all request messages made by a user.




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   Inherits: MeshRequest

   Account: String (Optional)  The fully qualified account name
      (including DNS address) to which the request is directed.

   EnvelopedProfileDevice: Enveloped (Optional)  Device profile of the
      device making the request.

9.2.  Response Messages

   A Mesh Portal Service response consists of a payload object that
   inherits from the MeshResponse class.  When using the HTTP binding,
   the response SHOULD report the Status response code in the HTTP
   response message.  However the response code returned in the payload
   object MUST always be considered authoritative.

9.2.1.  Message: MeshResponse

   Base class for all response messages.  Contains only the status code
   and status description fields.

   [No fields]

9.3.  Imported Objects

   The Mesh Service protocol makes use of JSON objects defined in the
   JOSE Signatgure and Encryption specifications and in the DARE Data At
   Rest Encryption extensions to JOSE.

9.4.  Common Structures

   The following common structures are used in the protocol messages:

9.4.1.  Structure: KeyValue

   Describes a Key/Value structure used to make queries for records
   matching one or more selection criteria.

   Key: String (Optional)  The data retrieval key.

   Value: String (Optional)  The data value to match.

9.4.2.  Structure: ConstraintsSelect

   Specifies constraints to be applied to a search result.  These allow
   a client to limit the number of records returned, the quantity of
   data returned, the earliest and latest data returned, etc.




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   Container: String (Optional)  The container to be searched.

   IndexMin: Integer (Optional)  Only return objects with an index value
      that is equal to or higher than the value specified.

   IndexMax: Integer (Optional)  Only return objects with an index value
      that is equal to or lower than the value specified.

   NotBefore: DateTime (Optional)  Only data published on or after the
      specified time instant is requested.

   Before: DateTime (Optional)  Only data published before the specified
      time instant is requested.  This excludes data published at the
      specified time instant.

   PageKey: String (Optional)  Specifies a page key returned in a
      previous search operation in which the number of responses
      exceeded the specified bounds.

      When a page key is specified, all the other search parameters
      except for MaxEntries and MaxBytes are ignored and the service
      returns the next set of data responding to the earlier query.

9.4.3.  Structure: ConstraintsData

   Specifies constraints on the data to be sent.

   MaxEntries: Integer (Optional)  Maximum number of entries to send.

   BytesOffset: Integer (Optional)  Specifies an offset to be applied to
      the payload data before it is sent.  This allows large payloads to
      be transferred incrementally.

   BytesMax: Integer (Optional)  Maximum number of payload bytes to
      send.

   Header: Boolean (Optional)  Return the entry header

   Payload: Boolean (Optional)  Return the entry payload

   Trailer: Boolean (Optional)  Return the entry trailer

9.4.4.  Structure: PolicyAccount

   Describes the account creation policy including constraints on
   account names, whether there is an open account creation policy, etc.

   Minimum: Integer (Optional)  Specifies the minimum length of an



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      account name.

   Maximum: Integer (Optional)  Specifies the maximum length of an
      account name.

   InvalidCharacters: String (Optional)  A list of characters that the
      service does not accept in account names.  The list of characters
      MAY not be exhaustive but SHOULD include any illegal characters in
      the proposed account name.

9.4.5.  Structure: ContainerStatus

   Container: String (Optional)

   Index: Integer (Optional)

   Digest: Binary (Optional)

9.4.6.  Structure: ContainerUpdate

   Inherits: ContainerStatus

   Envelopes: DareEnvelope [0..Many]  The entries to be uploaded.

9.5.  Transaction: Hello

   Request: HelloRequest

   Response: MeshHelloResponse

   Report service and version information.

   The Hello transaction provides a means of determining which protocol
   versions, message encodings and transport protocols are supported by
   the service.

   The PostConstraints field MAY be used to advise senders of a maximum
   size of payload that MAY be sent in an initial Post request.

9.5.1.  Message: MeshHelloResponse

   ConstraintsUpdate: ConstraintsData (Optional)  Specifies the default
      data constraints for updates.

   ConstraintsPost: ConstraintsData (Optional)  Specifies the default
      data constraints for message senders.

   PolicyAccount: PolicyAccount (Optional)  Specifies the account



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      creation policy

   EnvelopedProfileService: Enveloped (Optional)  The enveloped master
      profile of the service.

   EnvelopedProfileHost: Enveloped (Optional)  The enveloped profile of
      the host.

9.6.  Transaction: BindAccount

   Request: BindRequest

   Response: BindResponse

   Request creation of a new service account or group.

   Attempt

9.6.1.  Message: BindRequest

   Request binding of an account to a service address.

   Inherits: MeshRequest

   AccountAddress: String (Optional)  The service account to bind to.

   EnvelopedProfileAccount: Enveloped (Optional)  The signed assertion
      describing the account.

9.6.2.  Message: BindResponse

   Inherits: MeshResponse

   Reports the success or failure of a Create transaction.

   Reason: String (Optional)  Text explaining the status of the creation
      request.

   URL: String (Optional)  A URL to which the user is directed to
      complete the account creation request.

9.7.  Transaction: UnbindAccount

   Request: UnbindRequest

   Response: UnbindResponse

   Request deletion of a service account.



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9.7.1.  Message: UnbindRequest

   Request creation of a new portal account.  The request specifies the
   requested account identifier and the Mesh profile to be associated
   with the account.

   Inherits: MeshRequestUser

   [No fields]

9.7.2.  Message: UnbindResponse

   Inherits: MeshResponse

   Reports the success or failure of a Delete transaction.

   [No fields]

9.8.  Transaction: Connect

   Request: ConnectRequest

   Response: ConnectResponse

   Request information necessary to begin making a connection request.

9.8.1.  Message: ConnectRequest

   Inherits: MeshRequest

   EnvelopedRequestConnection: Enveloped (Optional)  The connection
      request generated by the client

   Rights: String [0..Many]  List of named access rights.

9.8.2.  Message: ConnectResponse

   Inherits: MeshResponse

   EnvelopedAcknowledgeConnection: Enveloped (Optional)  The connection
      request generated by the client

   EnvelopedProfileAccount: Enveloped (Optional)  The user profile that
      provides the root of trust for this Mesh







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9.9.  Transaction: Complete

   Request: CompleteRequest

   Response: CompleteResponse

9.9.1.  Message: CompleteRequest

   Inherits: StatusRequest

   AccountAddress: String (Optional)

   ResponseID: String (Optional)

9.9.2.  Message: CompleteResponse

   Inherits: MeshResponse

   EnvelopedRespondConnection: Enveloped (Optional)  The signed
      assertion describing the result of the connect request

9.10.  Transaction: Status

   Request: StatusRequest

   Response: StatusResponse

9.10.1.  Message: StatusRequest

   Inherits: MeshRequestUser

   DeviceUDF: String (Optional)

   ProfileMasterDigest: Binary (Optional)

   Catalogs: String [0..Many]

   Spools: String [0..Many]

9.10.2.  Message: StatusResponse

   Inherits: MeshResponse

   EnvelopedProfileAccount: Enveloped (Optional)  The account profile
      providing the root of trust for this account.

   EnvelopedCatalogedDevice: Enveloped (Optional)  The catalog device
      entry



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   ContainerStatus: ContainerStatus [0..Many]

9.11.  Transaction: Download

   Request: DownloadRequest

   Response: DownloadResponse

   Request objects from the specified container with the specified
   search criteria.

9.11.1.  Message: DownloadRequest

   Inherits: MeshRequestUser

   Request objects from the specified container(s).

   A client MAY request only objects matching specified search criteria
   be returned and MAY request that only specific fields or parts of the
   payload be returned.

   Select: ConstraintsSelect [0..Many]  Specifies constraints to be
      applied to a search result.  These allow a client to limit the
      number of records returned, the quantity of data returned, the
      earliest and latest data returned, etc.

   ConstraintsPost: ConstraintsData (Optional)  Specifies the data
      constraints to be applied to the responses.

9.11.2.  Message: DownloadResponse

   Inherits: MeshResponse

   Return the set of objects requested.

   Services SHOULD NOT return a response that is disproportionately
   large relative to the speed of the network connection without a clear
   indication from the client that it is relevant.  A service MAY limit
   the number of objects returned.  A service MAY limit the scope of
   each response.

   Updates: ContainerUpdate [0..Many]  The updated data

9.12.  Transaction: Transact

   Request: TransactRequest

   Response: TransactResponse



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   Attempt an atomic transaction on the containers and spools associated
   with an account.

9.12.1.  Message: TransactRequest

   Inherits: MeshRequestUser

   Upload entries to a container.  This request is only valid if it is
   issued by the owner of the account

   Updates: ContainerUpdate [0..Many]  The data to be updated

   Accounts: String [0..Many]  The account(s) to which the request is
      directed.

   Outbound: Enveloped [0..Many]  The messages to be sent to other
      accounts

   Inbound: Enveloped [0..Many]  Messages to be appended to the user's
      inbound spool. this is typically used to post notifications to the
      user to mark messages as having been read or responded to.

   Local: Enveloped [0..Many]  Messages to be appended to the user's
      local spool.  This is used to allow connecting devices to collect
      activation messages before they have connected to the mesh.

9.12.2.  Message: TransactResponse

   Inherits: MeshResponse

   Response to an upload request.

   Entries: EntryResponse [0..Many]  The responses to the entries.

   ConstraintsData: ConstraintsData (Optional)  If the upload request
      contains redacted entries, specifies constraints that apply to the
      redacted entries as a group.  Thus the total payloads of all the
      messages must not exceed the specified value.

9.12.3.  Structure: EntryResponse

   IndexRequest: Integer (Optional)  The index value of the entry in the
      request.

   IndexContainer: Integer (Optional)  The index value assigned to the
      entry in the container.

   Result: String (Optional)  Specifies the result of attempting to add



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      the entry to a catalog or spool.  Valid values for a message are
      'Accept', 'Reject'.  Valid values for an entry are 'Accept',
      'Reject' and 'Conflict'.

   ConstraintsData: ConstraintsData (Optional)  If the entry was
      redacted, specifies constraints that apply to the redacted entries
      as a group.  Thus the total payloads of all the messages must not
      exceed the specified value.

9.13.  Transaction: Post

   Request: PostRequest

   Response: PostResponse

   Request to post to a spool from an external party.  The request and
   response messages are extensions of the corresponding messages for
   the Upload transaction.  It is expected that additional fields will
   be added as the need arises.

9.13.1.  Message: PostRequest

   Inherits: MeshRequest

   Accounts: String [0..Many]  The account(s) to which the request is
      directed.

   Messages: Enveloped [0..Many]  The messages to be sent to the
      addresses specified in Accounts.

9.13.2.  Message: PostResponse

   Inherits: TransactResponse

   [No fields]

9.14.  Transaction: Claim

   Request: ClaimRequest

   Response: ClaimResponse

   Claim a publication

9.14.1.  Message: ClaimRequest

   Inherits: MeshRequest




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   EnvelopedMessageClaim: Enveloped (Optional)  The claim message

9.14.2.  Message: ClaimResponse

   Inherits: MeshResponse

   CatalogedPublication: CatalogedPublication (Optional)  The encrypted
      device profile

9.15.  Transaction: PollClaim

   Request: PollClaimRequest

   Response: PollClaimResponse

   Check party making claim

9.15.1.  Message: PollClaimRequest

   Inherits: MeshRequest

   PublicationId: String (Optional)  The envelope identifier formed from
      the PublicationId.

   TargetAccountAddress: String (Optional)  Account to which the claim
      is directed

9.15.2.  Message: PollClaimResponse

   Inherits: MeshResponse

   EnvelopedMessage: Enveloped (Optional)  The claim message

9.15.3.  Structure: CryptographicOperation

   KeyId: String (Optional)  The key identifier

   KeyCoefficient: Binary (Optional)  Lagrange coefficient multiplier to
      be applied to the private key

9.15.4.  Structure: CryptographicOperationSign

   Inherits: CryptographicOperation

   Data: Binary (Optional)  The data to sign

   PartialR: Binary (Optional)  Contribution to the R offset.




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9.15.5.  Structure: CryptographicOperationKeyAgreement

   Inherits: CryptographicOperation

   [No fields]

9.15.6.  Structure: CryptographicOperationGenerate

   Inherits: CryptographicOperation

   [No fields]

9.15.7.  Structure: CryptographicOperationShare

   Inherits: CryptographicOperation

   Threshold: Integer (Optional)

   Shares: Integer (Optional)

9.15.8.  Structure: CryptographicResult

   Error: String (Optional)

9.15.9.  Structure: CryptographicResultKeyAgreement

   Inherits: CryptographicResult

   [No fields]

9.15.10.  Structure: CryptographicResultShare

   Inherits: CryptographicResult

   [No fields]

9.16.  Transaction: Operate

   Request: OperateRequest

   Response: OperateResponse

   Perform a set of cryptographic operations

9.16.1.  Message: OperateRequest

   Inherits: MeshRequest




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   AccountAddress: String (Optional)  The service account the capability
      is bound to

9.16.2.  Message: OperateResponse

   Inherits: MeshResponse

   [No fields]

10.  Security Considerations

   The security considerations for use and implementation of Mesh
   services and applications are described in the Mesh Security
   Considerations guide [draft-hallambaker-mesh-security].

11.  IANA Considerations

   All the IANA considerations for the Mesh documents are specified in
   this document

12.  Acknowledgements

   A list of people who have contributed to the design of the Mesh is
   presented in [draft-hallambaker-mesh-architecture].

13.  Normative References

   [draft-hallambaker-jsonbcd]
              Hallam-Baker, P., "Binary Encodings for JavaScript Object
              Notation: JSON-B, JSON-C, JSON-D", Work in Progress,
              Internet-Draft, draft-hallambaker-jsonbcd-21, 5 August
              2021, <https://datatracker.ietf.org/doc/html/draft-
              hallambaker-jsonbcd-21>.

   [draft-hallambaker-mesh-architecture]
              Hallam-Baker, P., "Mathematical Mesh 3.0 Part I:
              Architecture Guide", Work in Progress, Internet-Draft,
              draft-hallambaker-mesh-architecture-17, 5 August 2021,
              <https://datatracker.ietf.org/doc/html/draft-hallambaker-
              mesh-architecture-17>.

   [draft-hallambaker-mesh-rud]
              Hallam-Baker, P., "Mathematical Mesh 3.0 Part VI: Reliable
              User Datagram", Work in Progress, Internet-Draft, draft-
              hallambaker-mesh-rud-00, 5 August 2021,
              <https://datatracker.ietf.org/doc/html/draft-hallambaker-
              mesh-rud-00>.




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   [draft-hallambaker-mesh-schema]
              Hallam-Baker, P., "Mathematical Mesh 3.0 Part IV: Schema
              Reference", Work in Progress, Internet-Draft, draft-
              hallambaker-mesh-schema-08, 5 August 2021,
              <https://datatracker.ietf.org/doc/html/draft-hallambaker-
              mesh-schema-08>.

   [draft-hallambaker-mesh-security]
              Hallam-Baker, P., "Mathematical Mesh 3.0 Part VII:
              Security Considerations", Work in Progress, Internet-
              Draft, draft-hallambaker-mesh-security-07, 5 August 2021,
              <https://datatracker.ietf.org/doc/html/draft-hallambaker-
              mesh-security-07>.

   [draft-hallambaker-mesh-udf]
              Hallam-Baker, P., "Mathematical Mesh 3.0 Part II: Uniform
              Data Fingerprint.", Work in Progress, Internet-Draft,
              draft-hallambaker-mesh-udf-13, 5 August 2021,
              <https://datatracker.ietf.org/doc/html/draft-hallambaker-
              mesh-udf-13>.

   [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/rfc/rfc2119>.

14.  Informative References

   [draft-hallambaker-mesh-developer]
              Hallam-Baker, P., "Mathematical Mesh: Reference
              Implementation", Work in Progress, Internet-Draft, draft-
              hallambaker-mesh-developer-10, 27 July 2020,
              <https://datatracker.ietf.org/doc/html/draft-hallambaker-
              mesh-developer-10>.

















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