Internet DRAFT - draft-petrie-vcon
draft-petrie-vcon
Network Working Group D. G. Petrie
Internet-Draft SIPez LLC
Intended status: Standards Track T. McCarthy-Howe
Expires: 5 September 2024 Strolid
4 March 2024
The JSON format for vCon - Conversation Data Container
draft-petrie-vcon-03
Abstract
A vCon is the container for data and information relating to a real-
time, human conversation. It is analogous to a [vCard] which enables
the definition, interchange and storage of an individual's various
points of contact. The data contained in a vCon may be derived from
any multimedia session, traditional phone call, video conference, SMS
or MMS message exchange, webchat or email thread. The data in the
container relating to the conversation may include Call Detail
Records (CDR), call meta data, participant identity information (e.g.
STIR PASSporT), the actual conversational data exchanged (e.g. audio,
video, text), realtime or post conversational analysis and
attachments of files exchanged during the conversation. A
standardized conversation container enables many applications,
establishes a common method of storage and interchange, and supports
identity, privacy and security efforts (see [vCon-white-paper])
About This Document
This note is to be removed before publishing as an RFC.
The latest revision of this draft can be found at
https://dgpetrie.github.io/draft-petrie-vcon/draft-petrie-vcon.html.
Status information for this document may be found at
https://datatracker.ietf.org/doc/draft-petrie-vcon/.
Source for this draft and an issue tracker can be found at
https://github.com/dgpetrie/draft-petrie-vcon.
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet-
Drafts is at https://datatracker.ietf.org/drafts/current/.
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Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1. What's in a vCon? . . . . . . . . . . . . . . . . . . . . 5
1.2. Use Cases and Requirements . . . . . . . . . . . . . . . 6
2. Conventions and Definitions . . . . . . . . . . . . . . . . . 8
2.1. Terminology . . . . . . . . . . . . . . . . . . . . . . . 8
2.2. JSON Notation . . . . . . . . . . . . . . . . . . . . . . 10
2.3. Inline Files . . . . . . . . . . . . . . . . . . . . . . 10
2.3.1. body . . . . . . . . . . . . . . . . . . . . . . . . 10
2.3.2. encoding . . . . . . . . . . . . . . . . . . . . . . 10
2.4. Externally Referenced Files . . . . . . . . . . . . . . . 11
2.4.1. url . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.4.2. alg . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.4.3. signature . . . . . . . . . . . . . . . . . . . . . . 12
3. vCon JSON Object . . . . . . . . . . . . . . . . . . . . . . 12
4. Unsigned Form of vCon Object . . . . . . . . . . . . . . . . 12
4.1. vCon JSON Object Keys and Values . . . . . . . . . . . . 13
4.1.1. vcon . . . . . . . . . . . . . . . . . . . . . . . . 13
4.1.2. uuid . . . . . . . . . . . . . . . . . . . . . . . . 13
4.1.3. created_at . . . . . . . . . . . . . . . . . . . . . 14
4.1.4. updated_at . . . . . . . . . . . . . . . . . . . . . 14
4.1.5. subject . . . . . . . . . . . . . . . . . . . . . . . 14
4.1.6. redacted . . . . . . . . . . . . . . . . . . . . . . 14
4.1.7. appended . . . . . . . . . . . . . . . . . . . . . . 17
4.1.8. group Objects Array . . . . . . . . . . . . . . . . . 19
4.1.9. parties Objects Array . . . . . . . . . . . . . . . . 20
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4.1.10. dialog Objects Array . . . . . . . . . . . . . . . . 20
4.1.11. analysis Objects Array . . . . . . . . . . . . . . . 20
4.1.12. attachments Objects Array . . . . . . . . . . . . . . 21
4.2. Party Object . . . . . . . . . . . . . . . . . . . . . . 21
4.2.1. tel . . . . . . . . . . . . . . . . . . . . . . . . . 21
4.2.2. stir . . . . . . . . . . . . . . . . . . . . . . . . 21
4.2.3. mailto . . . . . . . . . . . . . . . . . . . . . . . 21
4.2.4. name . . . . . . . . . . . . . . . . . . . . . . . . 22
4.2.5. validation . . . . . . . . . . . . . . . . . . . . . 22
4.2.6. jCard . . . . . . . . . . . . . . . . . . . . . . . . 22
4.2.7. gmlpos . . . . . . . . . . . . . . . . . . . . . . . 22
4.2.8. civicaddress . . . . . . . . . . . . . . . . . . . . 23
4.2.9. timezone . . . . . . . . . . . . . . . . . . . . . . 24
4.3. Dialog Object . . . . . . . . . . . . . . . . . . . . . . 24
4.3.1. type . . . . . . . . . . . . . . . . . . . . . . . . 25
4.3.2. start . . . . . . . . . . . . . . . . . . . . . . . . 25
4.3.3. duration . . . . . . . . . . . . . . . . . . . . . . 25
4.3.4. parties . . . . . . . . . . . . . . . . . . . . . . . 26
4.3.5. originator . . . . . . . . . . . . . . . . . . . . . 26
4.3.6. mimetype . . . . . . . . . . . . . . . . . . . . . . 27
4.3.7. filename . . . . . . . . . . . . . . . . . . . . . . 27
4.3.8. Dialog Content . . . . . . . . . . . . . . . . . . . 28
4.3.9. disposition . . . . . . . . . . . . . . . . . . . . . 28
4.3.10. party_history Objects Array . . . . . . . . . . . . . 29
4.3.11. Dialog Transfer . . . . . . . . . . . . . . . . . . . 30
4.4. Analysis Object . . . . . . . . . . . . . . . . . . . . . 31
4.4.1. type . . . . . . . . . . . . . . . . . . . . . . . . 31
4.4.2. dialog . . . . . . . . . . . . . . . . . . . . . . . 31
4.4.3. mimetype . . . . . . . . . . . . . . . . . . . . . . 32
4.4.4. filename . . . . . . . . . . . . . . . . . . . . . . 32
4.4.5. vendor . . . . . . . . . . . . . . . . . . . . . . . 32
4.4.6. product . . . . . . . . . . . . . . . . . . . . . . . 32
4.4.7. schema . . . . . . . . . . . . . . . . . . . . . . . 33
4.4.8. Analysis Content . . . . . . . . . . . . . . . . . . 33
4.5. Attachment Object . . . . . . . . . . . . . . . . . . . . 33
4.5.1. type or purpose . . . . . . . . . . . . . . . . . . . 33
4.5.2. start . . . . . . . . . . . . . . . . . . . . . . . . 34
4.5.3. party . . . . . . . . . . . . . . . . . . . . . . . . 34
4.5.4. mimetype . . . . . . . . . . . . . . . . . . . . . . 34
4.5.5. filename . . . . . . . . . . . . . . . . . . . . . . 34
4.5.6. Attachment Content . . . . . . . . . . . . . . . . . 34
4.6. Group Object . . . . . . . . . . . . . . . . . . . . . . 35
5. Security Considerations . . . . . . . . . . . . . . . . . . . 36
5.1. Signing Externally Referenced Files . . . . . . . . . . . 38
5.2. Signed Form of vCon Object . . . . . . . . . . . . . . . 38
5.2.1. Signature Object . . . . . . . . . . . . . . . . . . 39
5.2.2. Header Object . . . . . . . . . . . . . . . . . . . . 39
5.3. Encrypted Form of vCon Object . . . . . . . . . . . . . . 39
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5.3.1. Unprotected Object . . . . . . . . . . . . . . . . . 40
5.3.2. Recipient Object . . . . . . . . . . . . . . . . . . 41
5.3.3. Header Object . . . . . . . . . . . . . . . . . . . . 41
6. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 41
7. References . . . . . . . . . . . . . . . . . . . . . . . . . 41
7.1. Normative References . . . . . . . . . . . . . . . . . . 41
7.2. Informative References . . . . . . . . . . . . . . . . . 42
Appendix A. Example vCons . . . . . . . . . . . . . . . . . . . 43
A.1. Two Party Call vCon With Inline Recording . . . . . . . . 44
A.2. Text Chat vCon . . . . . . . . . . . . . . . . . . . . . 48
A.3. Email Thread Multipart vCon . . . . . . . . . . . . . . . 48
A.4. Email Thread Text vCon . . . . . . . . . . . . . . . . . 51
A.5. Two Party Call vCon With Externally Referenced
Recording . . . . . . . . . . . . . . . . . . . . . . . 52
A.6. Two Party Call vCon with Analysis . . . . . . . . . . . . 53
A.7. Signed vCon . . . . . . . . . . . . . . . . . . . . . . . 53
A.8. Encrypted vCon . . . . . . . . . . . . . . . . . . . . . 59
A.9. Redacted Signed vCon . . . . . . . . . . . . . . . . . . 65
A.10. Appended Signed vCon . . . . . . . . . . . . . . . . . . 65
A.11. vCon Group . . . . . . . . . . . . . . . . . . . . . . . 65
Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . . . 65
Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . 66
1. Introduction
The generation of conversational data, contained in transcripts and
multi-media files, is common in business, especially in customer
facing organizations. However, the storage, analysis and sharing of
the data they contain is not currently a standard. Standardizing a
container for conversation data (vCon) has numerous advantages, and
enables the management of the conversation's content. Very often the
system providing the communications service, the consumer and/or
owner of the communications data and the communications analysis
services are distinct systems and in many case separate business
entities. The point of a vCon is to provide a standard means of
exchanging communications data between these systems and services.
The use of vCons can ease service integration by using a common
container and format for enterprise communications. A vCon becomes
the standardized input to communication analysis tools and machine
learning and categorization. For a sales lead organization, a vCon
can be the container of assets sold to sales teams. For
conversations of record, the vCon can be a legal instrument. For
machine learning efforts, vCons can track what information was used
in the training of models, so that as the result of a customer
requested deletion of their data, the affected models can be
identified.
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1.1. What's in a vCon?
A vCon contains four major categories of data: metadata , dialog ,
analysis and attachments. The metadata portion allows for an
expanded set of data from a typical call detail record ([CDR]), with
identifications of the participants or parties to the conversation,
references to related or earlier versions of the vCon. The dialog
portion contains a set of multimedia and mime elements, each
representing the actual, physical conversation in it's original media
form: text, audio or video. The analysis portion contains data
derived from the metadata and dialog portions, intended to carry
items like transcripts, translations, summaries, text to speech,
sentiment analysis and other semantic tagging. Finally, the
attachment portion contains any other documents, such as slide deck
or sales lead information, which provides context and support for the
conversation itself. The vCon may also container integrity checking
information such as the issuer of the vCon and tamperproof features
such as signatures.
A vCon acts as the definition of the conversation, and are created by
systems during and after the conversation itself. Some communication
modes, like SMS texting, lack natural session boundaries and require
explicit definition. vCons may have two or more parties involved, but
at least one should be a human. For instance, an interaction between
a bot and a human is an appropriate scope for vCons, but a
conversation between two bots would not.
Due to the size and complexity of some portions of a vCon, both
inline and externally referenced dialog, analysis, attachments and
other vCon reference assets are supported. For instance, vCons may
reference a videoconference media recording as an external URL with
an accompanying signature of the contents to detect tampering.
Alternatively, vCons may directly contain the media of the entire
dialog internally, keeping the conversation in one place, and
optionally encrypted.
vCons are designed to be a digital asset, versioned and signed. For
instance, different versions of vCon may arise due to redaction (e.g.
for PII or other reasons), added analysis or the addition of other
content. In the metadata, vCons contain the unique ID of the parent
vCon, such that they may be traversed while maintaining their data
integrity and provenance.
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1.2. Use Cases and Requirements
In large enterprises, different products may be served by different
call centers (inhouse or out sourced). The call centers may have
different communications infrastructure and even different platform
vendors (e.g. IP PBX, email servers). Consequently, the CDR and
meta data as well as the conversation recordings may be stored in
different formats and locations. This creates artificial silos of
storage and analysis. Using vCon as a standard exchange, storage,
analysis input and output format, would ease integration efforts and
cross enterprise analysis of products and call center metrics. This
would also ease customer analysis across product lines which may
currently be difficult due to separated, heterogeneous communications
silos. Having conversation data in the vCon format would lower the
cost and speed deployment of both inhouse and outsourced analysis
tools for import into ML and AI based tools, transcription,
translation and sentiment analysis. Having conversation data in a
standard vCon container would ease the export of conversation data
from hosted services. This would enable more analysis capabilities.
In some locations, regulations make it mandatory for enterprises to
delete private information upon request of the individual. Large
enterprises with siloed communications systems have difficulty
locating or identifying all of the private data for an individual due
to the disparate communications systems. Using the vCon as the
standard container for all communications system, storing the
conversation data centrally and removing it from the siloed
communications systems, allows for easier management, correlation,
tracking and deletion of individual's private data. Without
centralizing the storage of the conversations in a standardized
container, deleting an individuals private data is untenable and the
enterprise cannot assert that they have fulfilled their requirement
to locate and delete all of the private data.
Large call centers may have tens of thousands of call agents making
hundreds of thousands of calls a day. Supervising the agents and
calls in a large call center is a huge efort. Using vCons to capture
all of the conversations for all of the agents, enables more
automation of evaluation, training and coaching of call center
agents. DEVOPS tools such as checking for conversation with too low
a volume or agents with faulty headsets becomes easier and less
costly using vCons. Call centers often have to provide service level
proof and reports to their customers. These service level
evaluations, monitoring and reporting can be more easily provided and
at a lower cost via third party solutions with vCons as a standard
conversation container.
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Conversations can have legal and regulatory significance.
Regulations may require conversation of record to be stored for
compliance. A conversation can become a verbal contract, making the
conversation data a legal instrument. Having a standard container
for the conversation data and asserting the integrity of the data
make it easier to distribute the conversation data to the parties
involved.
The initial set of use cases for vCons are expected to be in the
interchange between front end and back end application and lower
layers of the network stack, critical for enablement of analysis of
conversations. It is expected that JavaScript handling of vCons in
the front end and RESTful interfaces and back end platforms will be
used for operations and manipulation of vCons. Many media analysis
services which will be used with vCons, such as transcription,
already use JSON based interfaces. For this reason, JSON has been
chosen for the initial format binding of vCons and the scope of this
document. Other bindings (e.g. [CBOR] or [ISOBMFF]) may be consider
for vCon in the future in other documents.
Requirements:
* Standardize container for conversational data exchange
* Consolidation of data and information for a conversation
* Multiple modes of communication, changing over time
* Snapshots of conversation during or once completed along with
analysis
* Ease of integration of services and analysis
* Better organize conversational data so that it can be handled in a
consistent, privacy safer means
* Immutable
* Hiding of PII or entire conversation
* Amendable with additional information and data elements
Define a standard for exchange of conversational data in a sea of
modes, platforms and service offerings for conversations.
Example conversational modes and protocols:
* SMS
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* MMS
* JABBER
* SIMPLE
* Proprietary web chat
* SMTP
* PSTN
* SIP
* WEBRTC
* Proprietary video conferencing
The following are considered not in scope or non-requirements:
* Real-time streaming or updating of conversational data
* Transport mechanisms
* Storage or databases specifications
* Methods of redaction of text, audio or video media
* Validation of redactions or appended data beyond the signature of
the domain making the changes to the conversational data (e.g.
Merkle tree like redactions)
* Standardization of analysis data formats or file media types
2. Conventions and Definitions
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "NOT RECOMMENDED", "MAY", and
"OPTIONAL" in this document are to be interpreted as described in
BCP 14 [RFC2119] [RFC8174] when, and only when, they appear in all
capitals, as shown here.
2.1. Terminology
* analysis - analysis, transformations, summary, sentiment, or
translation typically of the dialog data
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* conversation - an exchange of communication using text, audio or
video medium between at least one human and one or more bots or
humans
* de-identification - removal of all information that could identify
a party in a conversation. This includes PII as well as audio and
video recordings. Voice recordings might be re-vocalized with a
different speaker.
* dialog - the captured conversation in its original form (e.g.
text, audio or video)
* encrypted form - encrypted JWE document with the JWS signed vCon
form contained in the ciphertext
* file - a data block either included or referenced in a vCon
* object - JSON object containing key and value pairs
* parameter - JSON key and value pair
* party - an observer or participant to the conversation, either
passive or active
* payload - the contents or bytes that make up a file
* PII - Personal Identifiable Information
* PII masked - may include voice recordings, but PII is removed from
transcripts and recordings (audio and video).
* vCon - container for conversational information
* vCon instance - a vCon populated with data for a specific
conversation
* vCon instance version - a single version of an instance of a
conversation, which may be modified to redact or append additional
information forming a subsequent vCon instance version
* vCon syntax version - the version for the data syntax used for
form a vCon
* signed form - JWS signed document with the unsigned vCon form
contained in the payload
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2.2. JSON Notation
The convention for [JSON] notation used in this document is copied
from sections 1.1-1.5 of [JMAP].
Date - A string that MUST have the form of an [RFC3339] date string
as defined for the Date type in section 1.4 of [JMAP].
"String" - a JSON string type
"UnsignedInt" - a positive JSON integer as defined in section 1.3 of
[JMAP].
"UnsignedFloat" - a positive JSON floating point number containing a
decimal point as defined in section 6 of [JSON].
"Mime" - A "String" value that MUST be of the following form as
defined in section 5.1 of [MIME]: type "/" subtype
"A[]" and array of values of type A.
All parameters are assumed to be mandatory unless other wise noted.
Objects or arrays with no or null values MAY be excluded from the
vCon.
2.3. Inline Files
Objects that contain a file or data inline (i.e. within the vCon)
MUST have the parameters: body and encoding. JSON does not support
binary data values. For this reason inline files MUST be base64url
(see Section 2 [JWS]) encoded to be included as a valid JSON string
value if they are not already valid JSON strings.
2.3.1. body
The body parameter contains the payload of the file to be included
inline. Depending upon the data in the file, it may require encoding
to be used as a valid JSON string value.
* body: "String"
2.3.2. encoding
The encoding parameter describes the type of encoding that was
performed on the string value of the body parameter.
* encoding: "String"
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This MUST be one of the following strings:
- "base64url": The payload of the file has been base64url encoded
and provided as the string value of the body parameter.
- "json": The value of the body string is a JSON object.
- "none": The payload of the file is a valid JSON string and can
be included without modification as the string value to the
body parameter.
2.4. Externally Referenced Files
Files and data stored externally from the vCon MUST be "signed" to
ensure that they have not been modified. Objects that refer to a
file which is externally stored from the vCon MUST have the
parameters: url, alg and signature. These parameters are defined in
the following subsections. The use of [SHA-512] hash for ensuring
that the externally referenced data or file has not been modified, is
defined in this document. Other methods of ensuring integrity may be
added in the future. The following subsections define how the
specific algorithm used and how that signature information is
included in a vCon so that the content can be verified.
2.4.1. url
The url value contains the [HTTPS] URL where the externally
referenced file is stored. HTTPS MUST be used for retrieval to
protect the privacy of the contents of the file.
* url: "String"
2.4.2. alg
The alg parameter describes the method used for signing the file
payload at the given url. Only one method of signing of externally
referenced files is defined in this document. So only one value is
defined for the alg parameter.
* alg: "String"
This SHOULD be the following string:
- "SHA-512": The algorithm used for signing the externally
referenced file is defined in section 6.3 and 6.4 of [SHA-512].
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2.4.3. signature
The [SHA-512] hash on the externally referenced file is included in
the signature string value.
* signature: "String"
The string value of the signature parameter is the Base64Url
Encoded value of the SHA-512 hash (as defined in section 6.3 and
6.4 [SHA-512]) of the body of the content at the given url.
3. vCon JSON Object
The JSON form of a vCon is contained in a JSON object in one of three
forms:
* unsigned
* signed
* encrypted
The unsigned form of the vCon has a single top level object. This
top level vCon object is also contained as described in the signed
(Section 5.2) and encrypted (Section 5.3) forms of the vCon. The
selection of the JSON format enables interchange between application
and lower layers of the network stack, critical for enablement of
analysis of conversations.
4. Unsigned Form of vCon Object
The unsigned form of the top level vCon object is necessary as in
many cases, a vCon will be partially constructed and in process as
conversation data is collected. This may change while the
conversation is in progress or on-going. The vCon may start with
only meta data and party information, then progress to contain dialog
information. It may then get analysis added or it could be passed to
another security domain for analysis.
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A vCon may be constructed across several security domains. When a
vCon is to be exported from one security domain to another, it SHOULD
be signed or encyrpted by the domain that constructed it. The
subsequent domain may have need to redact or append data to the vCon.
Alternatively the originating domain may want to redact the vCon
before providing it to an other domain. The second or subsequent
domain, MAY modify the prior vCon instance version and when complete
or exporting to another security domain, it SHOULD sign or encrypt
the new vCon instance version. The new vCon instance version SHOULD
refer to the prior vCon instance version via the redacted
(Section 4.1.6) or appended (Section 4.1.7) parameters.
4.1. vCon JSON Object Keys and Values
The keys and values for the top level vCon JSON object are defined in
the following subsections.
4.1.1. vcon
The the value of vcon parameter contains the syntactic version of the
JSON format used in the vCon.
* vcon: "String"
For syntax defined in this document, the string MUST have the
value: "0.0.1"
4.1.2. uuid
The [UUID] for the vCon is used to refer to it when privacy or
security may not allow for inclusion or URL reference to a vCon. The
UUID MUST be globally unique.
* uuid: "String"
The value of the string SHOULD be generated using the version 8
UUID defined in [UUID] which is generated identically to a version
7 UUID with the exception that:
- rand_b/custom_c is generated from the high 62 bits of the SHA-1
hash of the FQHN string
- the variant and version fields are set as described for version
8 UUID
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The DNS name string used in generating the uuid value SHOULD be
the same FQHN, or a subdomain to allow for more distributed
generation of UUIDs, as would used in the signing certificate as
they are the same domains of uniqueness.
4.1.3. created_at
The created_at parameter provides the creation time of this vcon,
which MUST be present, and should not changed once the vcon object is
created.
* created_at: "Date"
4.1.4. updated_at
The updated_at parameter provides the last modified time of this
vcon, which MAY be present. For unsigned forms, the updated_at of
the vcon object SHOULD be updated as it is modified. For signed
forms of the vCon object, the updated_at contains the time when this
vcon was last signed. Future updates MUST first set the updated_at
to the new signing time as the vcon object is signed again.
* updated_at: "Date"
4.1.5. subject
The subject or the topic of the conversation is provided in the
subject parameter. This parameter is optional as not all
conversations have a defined subject. Email threads and prescheduled
calls and video conferences typically have a subject which can be
captured here. The subject may also be derived from analysis of the
dialog.
* subject: "String" (optional)
The string value of the subject parameter is a free formed JSON
string with no constrained syntax.
4.1.6. redacted
A redacted vCon SHOULD provide a reference to the unredacted or
prior, less redacted, vCon instance version of itself. The purpose
of the Redacted Object is to provide the reference to the unredacted
or less redacted version of the vCon from which this vCon was
derived. For privacy reasons, it may be necessary to redact a vCon
to construct another vCon without the PII. This allows the non-PII
portion of the vCon to still be analyzed or used in a broader scope.
The Redacted Object SHOULD contain the uuid parameter and MAY include
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the vCon inline via the body and encoding parameters or alternatively
the url, alg and signature parameters (see Inline Files (Section 2.3)
and Externally Referenced Files (Section 2.4)). If the unredacted
vCon is included in the body, the unredacted vCon MUST be in the
encrypted form. If a reference to the unredacted vCon is provided in
the url parameter, the access to that URL MUST be restricted to only
those who should be allowed to see the identity or PII for the
redacted vCon.
The method(s) for redaction of text, audio and video can be done with
existing post processing of media. The method of redaction is out of
scope of this document. The assurance of the accuracy of the
redaction is made by the entity that creates the redaction which
SHOULD sign the redacted version of the vCon.
All data and parameters in the prior, less redacted, vCon instance
version are either:
* Removed entirely in the redacted version
* Copied and partially redacted
* Copied as is
Data which is to be completely removed from the redacted version,
that is contained in a JSON array in the unredacted vCon, SHOULD
create an empty placeholder such that object array indices do not
change for the rest of the elements of the array.
* redacted: "Redacted" (optional, mutually exclusive with appended
and group parameters)
A Redacted Object contains the following parameters:
* uuid: "String"
The value contains the uuid string value (Section 4.1.2) of the
unredacted/prior vCon instance version. The absence of a value
for uuid indicates that the less redacted version of this vCon is
not available or does not exist.
* type: "String"
The value of the redacted type parameter is used to indicate the
type of redaction that was performed on this vCon relative to the
less redacted version referenced by the redacted uuid parameter.
This should indicate the type of information that was redacted.
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As defined in Inline Files (Section 2.3) body and encoding MAY be
included:
* body: "String"
* encoding: "String"
Alternatively, as defined in Externally Referenced Files
(Section 2.4) url, alg and signature MAY be included:
* url: "String"
* alg: "String"
* signature: "String"
The following diagram illustrates an example partial JSON object tree
for a redacted vCon. The top level object is a JWS signed vCon which
contains a vCon in the unsigned form in the payload parameter. The
second level object is the redacted vcon which refers to the
encrypted unredacted vCon in it's redacted parameter. Note that the
redacted vCon references the JWE encrypted vCon by UUID and may
reference it by URL or direct inclusion. The JWE encrypted
unredacted vCon contains the signed version of the unredacted vCon in
the ciphertext parameter. The signed unredacted vCon contains the
unredacted vCon in the unsigned form in it's payload parameter.
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--------------
Signed | JWS |
redacted vCon: | | payload parameter
| payload-|-- contains unsigned
-------------- / redacted vCon
/
------------- /
vCon which |vCon |<---
has been | | redacted parameter contains
redacted: | redacted-|-- or refers to JWE
------------- / encrypted unredacted vCon
/
/
/
/
/
/ ---------------
->| JWE | cyphertext
Encrypted signed | | parameter
unredacted vCon: | cyphertext-|--- contains
--------------- / JWS signed
/ unredacted
------------- / vCon
Signed |JWS |<-----
unredacted vcon: | | payload contains
| payload-|-- unsigned
------------- \ unredacted vCon
\ ----------
-->| vCon |
Unsigned unredacted vCon: | |
----------
Figure 1: redacted vCon object tree
4.1.7. appended
A signed or encrypted vCon cannot be modified without invalidating
it. In these cases, to allow for adding of additional information a
new vCon instance version MUST be created. The prior vCon instance
version is referenced by the Appended Object. Then the appended
information is added to the new vCon instance version (i.e. top level
vCon object).
The prior vCon instance version SHOULD be referenced via the uuid of
the prior vCon instance version, and MAY include the body and
encoding parameters or alternatively the url, alg and signature
parameters (see Inline Files (Section 2.3) and Externally Referenced
Files (Section 2.4)).
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* appended: "Appended" (optional, mutually exclusive with redacted
and group parameters)
The Appended Object contains the following parameters:
* uuid: "String" (optional if inline or external reference provided)
The value contains the uuid string value (Section 4.1.2) of the
unredacted/original vCon instance version.
Alternatively, as defined in Inline Files (Section 2.3) body and
encoding MAY be included:
* body: "String"
* encoding: "String"
Alternatively, as defined in Externally Referenced Files
(Section 2.4) url, alg and signature MAY be included:
* url: "String"
* alg: "String"
* signature: "String"
The following figure illustrates an example partial JSON object tree
for an appended vCon. The top level object is the JWS signed
appended vCon which contains the unsigned form of the vCon in it's
payload parameter. The second level object is the appended vCon with
additional conversational data (e.g. analysis data). It refers to
its original parent (or prior vCon instance version) of the vCon in
its appended parameter. Note: the appended parameter may include the
original in the body parameter or refer to it via URL. The appended
vCon in this figure refers to the JWS signed version of the vCon,
which in turn contains the original vCon in unsigned form in its
payload parameter.
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--------------
Signed | JWS |
appended vCon: | | payload parameter
| payload-|-- contains unsigned
-------------- / appended vCon
/
------------- /
vCon with |vCon |<---
appended | | appended parameter contains
data: | appended-|--- or refers to JWS
| analysis | / signed original vCon
------------- / along with additional
/ converstational data
/ (e.g. analysis)
/
/
/
/ ------------
->| JWS | payload
Encrypted signed | | parameter
original vCon: | payload-|--- contains
------------ / unsigned
/ original
------------- / vCon
Original vCon: |vCon |<--
| |
| parties |
| dialog |
-------------
Figure 2: appended vCon object tree
4.1.8. group Objects Array
The scope of a conversation is defined by the observer. It may be
any of the following in this non-exhaustive list:
* a quick text exchange
* a simple 2-way call
* an evolving group chat
* a class lecture and question and answer session
* a web chat, evolving to a 2 way call, progressing to a transferred
3-way call transitioning to a video conference
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* a series of weekly status calls
In support of these constructs, it may be desirable to aggregate a
group of vCons as opposed to including all of the dialog in a single
vCon. The conversations may be over heterogeneous or homogeneous
medium. A vCon MAY aggregated a group of vCon instances in the group
array, using a Group Object for each vCon instance.
* group: "Group[]" (optional, mutually exclusive with redacted and
appended parameters)
The group array contains a Group Object (Section 4.6) for each
vCon.
4.1.9. parties Objects Array
The name, identity or contact information of all of the parties
involved with the conversation are included in the parties object
array. Whether the parties were observers, passive or active
participants in the conversation, they each are included as a Party
Object in the parties array.
TODO: Should this be a object not an array to make it easier to
append parties (i.e. indices of append vCons change when appended)?
* parties: "Party[]"
The value of the parties parameter is an array of Party Objects
(Section 4.2).
4.1.10. dialog Objects Array
The actual conversation which occurred over text, audio or video that
was captured, is contained in the dialog Objects Array.
* dialog: "Dialog[]" (optional)
The value of the dialog parameter is an array of Dialog Objects
(Section 4.3).
4.1.11. analysis Objects Array
Analysis, which is performed on the conversational data, is stored in
the analysis Objects array.
* analysis: "Analysis[]" (optional)
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The value of the analysis parameter is an array of Analysis
Objects (Section 4.4).
4.1.12. attachments Objects Array
Ancillary documents, discussed, presented, referenced or related to
the conversation may be stored in the attachments array.
* attachments: "Attachment[]" (optional)
The value of the attachments parameter is an array of Attachment
Objects (Section 4.5).
4.2. Party Object
4.2.1. tel
If the tel URL for the party is known, it can be included in the tel
parameter.
* tel: "String" (optional)
The value of the tel parameter SHOULD be a valid [TEL] URL. The
URL scheme prefix (i.e. "tel:") is optional.
4.2.2. stir
If the STIR [PASSporT] was provided to identify the party, the
PASSporT can be included in the stir parameter for the party.
* stir: "String" (optional)
The string value of the stir parameter contains the [PASSporT] in
the JWS Compact Serialization form.
4.2.3. mailto
If the mailto URL is known for the party, it can be included in the
mailto parameter.
* mailto: "String" (optional)
The value of the mailto parameter is a string of the format of a
valid [MAILTO] URL. The URL scheme prefix (i.e. "mailto:") is
optional.
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4.2.4. name
If the party's name is known, it can be included in the name
parameter.
* name: "String" (optional)
The string value of the name parameter is a free form JSON string
in which part or all of the parity's name can be included.
4.2.5. validation
Proof of authorization of the communication channel through STIR,
login or possession of a device, is often not sufficient proof of the
identity of the person at the other end of the communications
channel. It is common in call centers to validate the identity of
the person on the communication channel through verification of some
sort of personal identification information. The methods used, often
varies with the situation and is business practices specific. The
purpose of the validation parameter, is to allow the validator to
save a label or token which identifies the method of identity
validation used to identify the person at the other end of the
communication channel. For confidentially reasons, it SHOULD NOT
contain the data used to validate the name. However it MAY name the
data used to validate the name (e.g. "SSN", "DOB", "user ID and
password"). It is up to the domain creating the vCon to define the
set of tokens or values to be used for the validation parameter.
* validation: "String" (SHOULD be provided if name parameter is
provided)
The value of the validation string MAY be "none" or enterprise or
domain defined token or string values.
4.2.6. jCard
TODO: Do we want to support including a jCard for the party?
4.2.7. gmlpos
If the geolocation of the party is known, it can be added in the
gmlpos parameter. The gmlpos parameter contains the latitude and
longitude of the location of the party at the time of the
conversation start.
* gmlpos: "String" (optional)
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The gmlpos parameter value contains a string of the same format as
the gml:pos element defined in section 3.2 of the [PIDF-LO] PIDF.
4.2.8. civicaddress
The the civicaddress parameter value contains a Civicaddress Object
which is optional and contains civic address information about the
location for the party.
* civicaddress: "Civicaddress" (optional)
The Civicaddress Object MAY contain any or all of the following
parameters: country, a1, a2, a3, a4, a5, a6, prd, pod, sts, hno, hns,
lmk, loc, flr, nam, pc as defined in section 2.2.1 of [GEOPRIV]. The
values of all of these parameters are of type String. Note that the
parameter names MUST be in lower case when contained in the
Civicaddress Object even though they are in upper case in [GEOPRIV].
* country: "String" (optional)
* a1: "String" (optional)
* a2: "String" (optional)
* a3: "String" (optional)
* a4: "String" (optional)
* a5: "String" (optional)
* a6: "String" (optional)
* prd: "String" (optional)
* pod: "String" (optional)
* sts: "String" (optional)
* hno: "String" (optional)
* hns: "String" (optional)
* lmk: "String" (optional)
* loc: "String" (optional)
* flr: "String" (optional)
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* nam: "String" (optional)
* pc: "String" (optional)
TODO: Do we need RFC6848 civic address extensions?
TODO: Is there a need for any temporal location? For example should
location be an array, each element with a time stamp?
TODO: Do we just specify for the start of the conversation?
4.2.9. timezone
TODO: timezone for the location of the party?
4.2.9.1. uuid
The uuid is a unique identifier for the participant. In a contact
center, this is particularly important for the call agent
participant, and must be static across interactions to allow
correlation with the actual agent configuration provisioned into the
systems.
* uuid: "String" (optional)
4.2.9.2. role
The role that the participant played in the conversation. In a call
center there are roles: such as: agents, customer, supervisor and
specialist. In conferences there are roles: host, cohost, speaker,
panelist, participant and other roles. The role parameter provides
the ability to label the role that the part played in the
conversation.
* role: "String" (optional)
TODO: Should we define a set of tokens for some roles and also let
this parameter be open ended?
4.3. Dialog Object
The Dialog object references or contains text, audio or video
captured from the conversation. Currently two types of dialog
objects are defined in this document. One for text media and the
other for audio or video recording files.
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TODO: Is there other signalling data that we want to capture other
than start and duration and the media (e.g. from jabber, sms, mms,
email, SIP, etc.)?
4.3.1. type
* type: "String"
The sting MUST have the value of either "recording", "text",
"transfer" or "incomplete". A dialog of type "recording" has
Dialog Content that either contains a body or refers to via url,
which is a recording of the video and/or audio of a segment of the
conversation. A dialog of type "text" had has Dialog Content that
either contains a body or refers to via url, which contains the
text from one of the parties for a segment of the conversation. A
dialog of type "transfer" does not capture actual conversation
exchange, but rather captures operations, parties and relations
between dialog segments. A dialog of type "incomplete" or
"transfer" MUST NOT have Dialog Content. In the "incomplete" case
the call or conversation failed to be setup to the point of
exchanging any conversation. Incomplete dialogs MUST have a
disposition parameter which indicates why the call or
conversations failed. In the "transfer" case, the conversation is
recorded in other dialogs. The Dialog Transfer parameters, are
used to show the roles and relationships between the parties and
other dialogs as the transfer process occurred.
4.3.2. start
The start parameter contains the date and time for the beginning of
the captured piece of dialog. For text it is the time that the party
started typing or if not available, then it is the time the text was
sent. For audio and video recordings, it is the time which
corresponds to the beginning of the recording.
* start: "Date"
4.3.3. duration
The duration parameter contains the duration in seconds of the
referenced or included piece of dialog. For text, if known, it is
the time duration from when the party started typing to when they
completed typing and the text was sent. For recordings, it is the
duration of the recording.
* duration: "UnsignedInt" | "UnsignedFloat" (optional)
The value MUST be the dialog duration in seconds.
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4.3.4. parties
The party(s) which generated the text or recording for this piece of
dialog are indicated in the parties parameter.
* parties: "UnsignedInt" | "UnsignedInt[]" | ("UnsignedInt" |
"UnsignedInt[]")[]
Single channel recordings should have a parties value of the form:
"UnisignedInt" or "UnsignedInt[]" where the integer value or array
of integer values are the indices to the Party Object(s) in the
parties array that contributed to the mix for the single channel
recording. The index for the Party Object SHOULD be included even
if the indicated party was silent the entire piece of dialog.
Multi-channel recordings MUST have a parties value that is an
array of the same size as the number of channels in the recording.
The values in that array are either an integer or an array of
integers which are the indices to the parties that contributed to
the mix for the associated channel of the recording. The index
for Party Objects SHOULD be included even if the party was silent
the entire conversation.
It is implied that the first party in the dialog Object parties
list, is the originator of the dialog. However, in some
situations, it is difficult to impose the constraint that the
first channel of a recording is the originator. If ensuring that
the first channel and party listed is the originator is not
possible, the optional originator parameter indicates the
originator party. In other cases, there may be a separate
recording file for each party in a conversation, where only one
party is recorded per file. In this situation, it is necessary to
indicate the originator as the dialog Object parties parameter
will contain only one party and may not be the originator.
TODO: For an email thread, To and Cc parties are all passive. Do we
just put the sender as the party or do we want to list all of the
recipients and by convention the sender is the first party? Note
that each dialog/email could have a difference set of recipients.
4.3.5. originator
The originator party for this dialog. For email and text, this is
the sender of the text. For audio and video, this is the caller or
host of the call or conference. The originator parameter is only
provided if the first party of the dialog Object parties list is NOT
the originator.
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* originator: "UnsignedInt" (optional)
The originator value is the index into the parties Objects Array,
to the party that originated the dialog.
4.3.6. mimetype
The media type for the piece of dialog included or referenced is
provided in the mimetype parameter. The mimetype parameter MUST be
provided for inline dialog files and MUST be provided if the Content-
Type header in the [HTTPS] response for the externally referenced URL
is not provided.
* mimetype: "Mime" (optional for externally referenced files)
The media types SHOULD be one of the following strings:
- "text/plain"
- "audio/x-wav"
- "audio/x-mp3"
- "audio/x-mp4"
- "audio/ogg"
- "video/x-mp4"
- "video/ogg"
- "multipart/mixed"
Note: multi-part will also likely include the boundary parameter
4.3.7. filename
It is sometimes useful to preserve the name of the file which
originally contained this piece of dialog. This can be done in the
filename parameter.
* filename: "String" (optional)
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4.3.8. Dialog Content
The Dialog Object SHOULD contain the body and encoding parameters or
the url, alg and signature parameters for all dialog types other than
"incomplete" and "transfer", these parameters MUST NOT be present for
"incomplete" or "transfer" dialog types (see Inline Files
(Section 2.3) and Externally Referenced Files (Section 2.4)).
For inline included dialog:
* body: "String"
* encoding: "String"
Alternatively, for externally referenced dialog:
* url: "String"
* alg: "String"
* signature: "String"
4.3.9. disposition
If the dialog type is "incomplete", it must have a disposition
parameter. The value of the disposition parameter provides the
reason that the "call control" failed. The term: "call control" is
used in a loose sense, as there in not always a call involved, to
differentiate from a call disposition that an agent may assign to a
call to indicate the reason, issue addressed or outcome of a
conversation. This latter definition of call disposition is not
dialog, but analysis of the conversation and is not included in the
dialog portion.
* disposition: "String" (required for incomplete type dialogs,
SHOULD NOT be present for other dialog types)
The value of the disposition parameter MUST be one of the
following string:
- "no-answer" - a call or connection was attempted, but no one
answered or accepted the connection
- "congestion" - a call or connection was attempted, but was
unable to be completed due to system load
- "failed" - a call or connection was attempted, but failed
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- "busy" - a call or connection was attempted, but the party was
busy with another conversation
- "hung-up" - a call or connection was made, but the party hung-
up before any conversation occurred
- "voicemail-no-message" - a call or connection was made, the
voicemail system answered, but no message was left
Note: if a message was left with the voicemail system this is no
longer an "incomplete" type dialog, it is a "recording" type and
the conversation SHOULD be included in the Dialog Content.
4.3.10. party_history Objects Array
Participants in a dialog may not all join and leave at the same time.
To support the capturing of the information when parties join, drop,
go on hold or mute and unmute, the party_history array may be added
to the Dialog Object.
* party_history: "Party_History[]" (optional)
4.3.10.1. Party_History Object
The Party_History Object contains the following parameters:
* party: "UnsignedInt"
The index of the party for this event.
* event: "String"
The string token for the event which MUST be one of the following:
- "join" - when the party joins the dialog
- "drop" - when the party drops out of the dialog
- "hold" - when the party is put on hold
- "unhold" - when the part is taken off hold
- "mute" - when the party is muted
- "unmute" - when the part is taken off mute
* time: "Date"
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4.3.11. Dialog Transfer
A dialog of type "transfer" documents the rolls of three parties and
the relationship between 2 or three dialog segments. In a transfer
operation, the roles of the three parties to a transfer are defined
in [SIP-XFER] as:
* Transferee
* Transferor
* Transfer Target
There are two or three calls in which the parties are connected:
* original call
* consultative call (optional as this call may not get created)
* target call
To capture the above roles and dialog segments, the following
parameters are defined and SHOULD be present in the "transfer" type
dialog and MUST NOT be present in other dialog types.
* transferee: "UnsignedInt"
The value of the transferee parameter is the index into the parties Object array to the party that played the role of the Transferee.
* transferor: "UnsignedInt"
The value of the transferor parameter is the index into the parties Object array to the party that played the role of the Transferor.
* transfer-target: "UnsignedInt"
The value of the transfer-target parameter is the index into the parties Object array to the party that played the role of the Transfer Target.
* original: "UnsignedInt"
The value of the original parameter is the index into the dialogs Object array to the "recording" or "text" type dialog for the original dialog between the Transferee and the Transferor.
* consultation: "UnsignedInt" (optional)
The value of the consultation parameter is the index into the dialogs Object array to the "recording", "text" or "incomplete" type dialog for the consultative dialog between the Transferor and the Transfer Target.
* target-dialog: "UnsignedInt"
The value of the target-dialog parameter is the index into the dialogs Object array to the "recording", "text" or "incomplete" type dialog for the target dialog between the Transferee and the Transfer Target.
A "transfer" type dialog MUST NOT contain the parties, originator, mimetype, filename or Dialog Content parameters.
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The "transfer" type dialog only captures the roles, operations and
events of the parties and the dialog setup. It does not capture the
purpose or reason for the transfer as that is analysis to be captures
in the analysis section of the Vcon after the conversation has
occurred.
4.4. Analysis Object
Analysis is a broad and in some cases developing field. This
document does not attempt to suggest a SHOULD support list of types.
Nor are formats for analysis data defined in this document. That is
for research and specification outside the scope of this document.
For this reason the Analysis Object provides multiple ways to define
the media type of the analysis file. If a well known media or mime
type is defined, it SHOULD be used. For analysis data or files types
for which a media type is not defined, the vendor and schema
parameters SHOULD be used.
4.4.1. type
The type parameter is used to label the semantic type of analysis
data.
* type: "String"
The string value SHOULD be one of the following:
- "summary"
- "transcript"
- "translation"
- "sentiment"
- "tts"
4.4.2. dialog
Analysis typically pertains to one or more of the Dialog Objects in
the dialog array. The dialog parameter is used to indicate which
Dialog Objects this analysis was based upon.
* dialog: "UnsignedInt" | "UnsignedInt[]" (optional only if the
analysis was not derived from any of the dialog)
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The value of the dialog parameter is the index to the dialog or
array of indices to dialogs in the dialog array to which this
analysis object corresponds.
4.4.3. mimetype
The media type for the included or referenced analysis file is
provided in the mimetype parameter.
* mimetype: "Mime" (optional for externally referenced files, if it
this is provided in the [HTTPS] Content-Type header)
The mimetype string contains the media type or [MIME] type of the
analysis file.
4.4.4. filename
It is sometimes useful to preserve the name of the file which
originally contained this analysis data. This can be done in the
filename parameter.
* filename: "String" (optional)
The file name string contains an optional name for the analysis
data file referenced in this Analysis Object.
4.4.5. vendor
There may not be a IANA registered media type for the file format
containing the analysis data. Even if a media type is defined, it is
often useful to keep a record of the vendor that produced the
software that produced the analysis. Different implementations
perform differently and knowing the implementation can be useful in
interpreting the analysis. For this reason, the vendor or product
name is provided in the vendor parameter.
* vendor: "String"
The vendor string value contains the vendor or product name of the
software which generated this analysis.
4.4.6. product
As the vendor may have more than one product, the product parameter
may be used to differentiate it from other products which may have
different schemas of analysis data.
* product: "string" (optional)
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4.4.7. schema
The same vendor or software product may produce different formats or
data for the same analysis. The schema parameter allows the data
format, schema or configuration used to generate the analysis to be
saved with the included or referenced analysis data.
* schema: "String" (optional)
The schema string contains a token or label for the data format or
schema for the analysis data. As the vendor name may not be
specific enough to identify the format of the analysis, the schema
value is provide to differentiate from potentially multiple data
formats for analysis provided by the same vendor or software.
4.4.8. Analysis Content
The Analysis Object SHOULD contain the body and encoding parameters
or the url, alg and signature parameters (see Inline Files
(Section 2.3) and Externally Referenced Files (Section 2.4)).
For inline included analysis:
* body: "String"
* encoding: "String"
Alternatively, for externally referenced analysis:
* url: "String"
* alg: "String"
* signature: "String"
4.5. Attachment Object
Ancillary documents to the conversation are included or referenced in
the Attachment Object. There is no constraint on the types files
which can be included or referenced. As most modes of communication,
that allow the exchange of files, do not constrain the file type, any
file type may be included here.
4.5.1. type or purpose
TODO: Do we want a semantic type like: contract or presentation? Or
a subject or title.
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4.5.2. start
The start parameter contains the date and time that the Attachment
Object was sent/exchanged.
* start: "Date"
4.5.3. party
In most conversations, ancillary documents originate from one of the
parties to the conversation. This is not necessarily the author, but
the person who distributed the document. This party is identified by
the party parameter in the Attachment Object.
* party: "UnsignedInt"
The value of the party parameter is the index into the Parties
Object array to the party that contributed the attachment.
4.5.4. mimetype
The media type for the included or referenced attachment file is
provided in the mimetype parameter.
* mimetype: "Mime" (optional for externally referenced files, if it
this is provided in the [HTTPS] Content-Type header)
The mimetype string contains the media type or [MIME] type of the
attached file.
4.5.5. filename
It is sometimes useful to preserve the name of the file which
originally contained this attachment file. This can be done in the
filename parameter.
* filename: "String" (optional)
The file name string contains an optional name for the attachment
file referenced in this Attachment Object.
4.5.6. Attachment Content
The Attachment Object SHOULD contain the body and encoding parameters
or the url, alg and signature parameters (see Inline Files
(Section 2.3) and Externally Referenced Files (Section 2.4)).
For inline included attachments:
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* body: "String"
* encoding: "String"
Alternatively, for externally referenced attachments:
* url: "String"
* alg: "String"
* signature: "String"
4.6. Group Object
A conversation may have take place using different modes (e.g. web
chat which evolves to email, which evolves to phone call, which
evolves to video conference). A conversation could take place over
several calls (e.g. multiple calls regarding a support incident or
problem). Each of these examples might be considered a single
conversation event though there are multiple sets of dialog in each.
What is considered the boundary of a conversation is a business
decision. There are situations in the above example, where it is
desired to treat these as a single conversation, but each set of
dialog is created in a single vCon (e.g. each dialog occurred in a
separate communication silo or security domain) which gets signed.
For this reason, it may be necessary to aggregate the separate vCon
into a single vCon which is considered the whole of a conversation.
The Group Object includes or refers to a vCon to be aggregated into
the whole of a single vCon conversation.
The Group Object SHOULD contain the uuid and either the body and
encoding parameters or the url, alg and signature parameters (see
Inline Files (Section 2.3) and Externally Referenced Files
(Section 2.4)). The vCon MAY be referenced via UUID:
* uuid: "String"
The value of the uuid parameter, is the uuid string value
(Section 4.1.2) of the referenced vCon to be aggregated.
The vCon MAY be included in line as the value of the body parameter.
The encoding parameter MUST be included with the body parameter, if
provided, to describe the encoding of the vCon body.
* body: "vCon"
The JSON unsigned form of the vCon, the JWS signed form of the
vCon or the JWE encrypted form of the vCon.
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* encoding: "String"
The encoding string MUST have the value: "json".
Alternatively, the vCon can be externally referenced. The url, alg
and signature parameters and values are defined in Externally
Referenced Files (Section 2.4).
* url: "String"
* alg: "String"
* signature: "String"
5. Security Considerations
The security concerns for vCons can put into two categories: making
the conversation immutable through integrity verification and
protecting the confidentiality of privacy of the parties to the
conversation and/or their PII. These requirements along with need to
evolve a vCon (e.g. adding analysis, translations and transcriptions)
conflict in some ways. To enable this, multiple versions of a vCon
may be created. Versions of a vCon may add information (e.g.
analysis added to a prior vCon referenced by the appended
(Section 4.1.7)) and versions that remove information (e.g.
redactions of privacy information removed from the vCon referenced in
the redacted (Section 4.1.6)). Redactions may be at different levels
for example:
* PII masked to remove PII data in the text, audio, video or
transcripts
* De-identified to remove segments or whole recordings that might be
used for voice printing or facial recognition
Different parts and versions of a vCon may be created in different
security domains over a period of time. In addition, some
conversation data may be referenced externally through an HTTPS URL
as opposed to completely contained within the vCon. Typically a
conversation of one mode, will be hosted or observed in a single
domain. This will likely fall into one of the following hosting
situations:
* Enterprise Hosted Communications
* Software as a Service (SaaS) Hosted Communications
* Service Provider Hosted Communications
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The distinction among these has gotten clouded over recent years.
The import consideration is that each is a different security domain.
Information about a conversation captured in an enterprise
communications system (e.g. meta data and Dialog Object(s) recorded
in an IP PBX) is a different security domain from a SaaS
transcription service (i.e. an Analysis Object). Before a vCon
leaves a security domain, it SHOULD be signed to prevent it from
being altered. If the new security domain needs to alter it, a new
vCon is created with the removed or added data and the prior version
is referenced (i.e. via the redacted (Section 4.1.6) or appended
(Section 4.1.7)). See the redacted vCon object tree figure-1 and
appended vCon object tree figure-2. If information is redacted for
privacy reasons, the vCon referenced in the redacted (Section 4.1.6),
if inline, SHOULD be encrypted to protect the privacy information in
the unredacted version of the vCon.
The secure storage and access of externally referenced conversation
data is considered out of scope from this document. Secure
mechanisms for HTTPS access and storage of files are well defined.
Identity and credentials for accessing externally stored data will be
exchanged out of band from the vCon. The one requirement for
externally referenced data from the perspective of this document, is
proof of integrity of that data.
Using the above described approach for redaction and appending of
data, we can reduce the security operations on a vCon to signing and
encryption. Two approaches to signing are needed as we have data, in
JSON format, that is contained within the vCon and may have data
(typically media and file formats, often binary) not contained,
inline in the vCon, that is externally referenced.
Externally referenced data will be "signed" using [SHA-512] hash
which along with the URL of the externally referenced data is
included in the vCon. [SHA-512] was chosen due to the relatively low
cost to generate and verify the signature for what could be very
large externally referenced media files. As the hash for each
externally referenced file is contained in the vCon which will be
signed, the chain of authentication is provided via the signature on
the vCon itself.
This document specifies the JSON format for vCons. So it seemed the
logical solution for signing vCons, is JOSE [JWS] JSON Serialization
and likewise for encrypting vCons is JOSE [JWE] JSON Serialization.
The solutions are well documents, implementations are readily
available and tested.
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Methods of redaction exist for text, audio and video using post
processing of the media. The method of redaction used is out of the
scope of this document. A redacted vCon SHOULD reference it's non-
redacted version. The non-redacted version of the vCon referenced
from the redacted vCon MUST be encrypted such that only those with
permission to view the non-redacted content can decrypt it.
Any time a vCon is shared outside its original security domain, it
SHOULD be signed and optionally encrypted. Files externally
referenced by a vCon SHOULD always be signed with the verification
information included in the vCon that references the external file as
defined in Externally Referenced Files (Section 2.4) and Signing
Externally Referenced Files (Section 5.1). Externally referenced
files SHOULD only be transported over [HTTPS] and SHOULD be access
controlled to those who are permitted to read the contents of that
non-redacted vCon. vCons transported over non-secure channels such as
email MUST be in the encrypted form.
5.1. Signing Externally Referenced Files
In some deployments, it is not practical to include all of the file
contents of a vCon inline. In support of that, a file may be
externally referenced. When external files are referenced, the
signature on the vCon does not secure the file contents from
modification. For this reason any externally referenced files SHOULD
also have a signature. vCons use the [SHA-512] hash method for
integrity checking of externally referenced file content and include
its url, alg and signature in the vCon which are included in the
integrity signature for the whole vCon.
After retrieving externally referenced files, before using its
content, the payload of the HTTPS request should be verified using
the signature parameter value for the hash for the url body using the
procedure defined in section 6.3 and 6.4 of [SHA-512].
5.2. Signed Form of vCon Object
A signed vCon uses [JWS] and takes the General JWS JSON Serialization
Syntax form as defined in section 7.2.1 of [JWS]. The vCon General
JWS JSON Serialization MUST include x5c or x5u in the unprotected
header.
* payload: "String"
The value of the payload is the Base64Url Encoded string
containing the unsigned form of the JSON vCon. The general
construction of the payload string value is described in section
7.2.1 of [JWK]
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* signatures "Signature[]"
The value of signatures is an array of Signature Objects
(Section 5.2.1)
5.2.1. Signature Object
The Signature Object MUST contain a header, protected and signature
parameter as defined in section 7.2.1 of [JWS].
* header: "Header"
The value of header is defined in Header Object (Section 5.2.2)
* protected: "String"
* signature" "String"
5.2.2. Header Object
The Header Object and its contents are defined in section 4 of [JWS].
The Header Object for a signed vCon MUST include the alg and either
the x5c or x5u arrays. The x5c or x5u requirement makes the
management and use of vCons easier, allowing the certificate chain to
be found as the vCon is moved.
* alg: "String"
The string value of alg is defined in section 4.1.1 of [JWS]. For
a signed vCon this value SHOULD be "RS256" to maximize
interoperability.
* x5c: "String[]" (MUST provide x5c or x5u)
The array of string values for x5c are defined in section 4.1.6 of
[JWS].
* x5u: "String" (MUST provide x5c or x5u)
The string value of x5u MUST contain an [HTTPS] URL as defined in
section 4.1.5 of [JWS].
TODO: How to deal with expired signatures?
5.3. Encrypted Form of vCon Object
TODO: Check this terminology:
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A vCon MUST be signed first using JWS as defined in Signed Form of
vCon Object (Section 5.2), then encrypted using JWE as opposed to
just encrypted with integrity protection. The rationale is that meta
data and dialog will typically be collected in one security domain,
then may be stored or exported to another. The signing is likely for
the lifetime of the vCon, where the encryption may be shorter term or
domain specific. vCons may be stored in unencrypted form, but the
signed form MUST be maintained to ensure its integrity.
A encrypted vCon uses [JWE] and takes the General JWE JSON
Serialization Syntax form as defined in section 7.2.1 of [JWE].
* unprotected: "Unprotected"
* recipients: "Recipient[]"
* iv: "String"
The string value of iv is the Initialization Vector as constructed
as defined in section 7.2.1 of [JWE].
* ciphertext: "String"
The string value of ciphertext is constructed as defined in
section 7.2.1 of [JWE] using the signed form of the vCon as the
plaintext input for encryption.
* tag: "String"
The string value of tag is the the Authentication Tag as defined
in section 7.2.1 of [JWE].
5.3.1. Unprotected Object
* cty: "String"
The string value of cty SHOULD be "application/vcon"
* enc: "String"
The string value of enc SHOULD be "A256CBC-HS512"
TODO: do we want to put the vCon UUID in the Unprotected Object so
that we can use it as a key?
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5.3.2. Recipient Object
* header: "Header"
* encrypted_key: "String"
The string value of encrypted_key is defined in section 7.2.1 of
[JWE].
5.3.3. Header Object
* alg: "String"
The string value of alg SHOULD be "RSA-OAEP".
6. IANA Considerations
IANA registration of new media subtype: vcon for media type
application:
application/vcon
7. References
7.1. Normative References
[GEOPRIV] Peterson, J., "A Presence-based GEOPRIV Location Object
Format", RFC 4119, DOI 10.17487/RFC4119, December 2005,
<https://www.rfc-editor.org/rfc/rfc4119>.
[HTTPS] Fielding, R., Ed., Nottingham, M., Ed., and J. Reschke,
Ed., "HTTP Semantics", STD 97, RFC 9110,
DOI 10.17487/RFC9110, June 2022,
<https://www.rfc-editor.org/rfc/rfc9110>.
[JSON] Bray, T., Ed., "The JavaScript Object Notation (JSON) Data
Interchange Format", STD 90, RFC 8259,
DOI 10.17487/RFC8259, December 2017,
<https://www.rfc-editor.org/rfc/rfc8259>.
[JWE] Jones, M. and J. Hildebrand, "JSON Web Encryption (JWE)",
RFC 7516, DOI 10.17487/RFC7516, May 2015,
<https://www.rfc-editor.org/rfc/rfc7516>.
[JWK] Jones, M., "JSON Web Key (JWK)", RFC 7517,
DOI 10.17487/RFC7517, May 2015,
<https://www.rfc-editor.org/rfc/rfc7517>.
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[JWS] Jones, M., Bradley, J., and N. Sakimura, "JSON Web
Signature (JWS)", RFC 7515, DOI 10.17487/RFC7515, May
2015, <https://www.rfc-editor.org/rfc/rfc7515>.
[MAILTO] Duerst, M., Masinter, L., and J. Zawinski, "The 'mailto'
URI Scheme", RFC 6068, DOI 10.17487/RFC6068, October 2010,
<https://www.rfc-editor.org/rfc/rfc6068>.
[MIME] Freed, N. and N. Borenstein, "Multipurpose Internet Mail
Extensions (MIME) Part One: Format of Internet Message
Bodies", RFC 2045, DOI 10.17487/RFC2045, November 1996,
<https://www.rfc-editor.org/rfc/rfc2045>.
[PASSporT] Wendt, C. and J. Peterson, "PASSporT: Personal Assertion
Token", RFC 8225, DOI 10.17487/RFC8225, February 2018,
<https://www.rfc-editor.org/rfc/rfc8225>.
[PIDF-LO] Winterbottom, J., Thomson, M., and H. Tschofenig, "GEOPRIV
Presence Information Data Format Location Object (PIDF-LO)
Usage Clarification, Considerations, and Recommendations",
RFC 5491, DOI 10.17487/RFC5491, March 2009,
<https://www.rfc-editor.org/rfc/rfc5491>.
[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>.
[RFC3339] Klyne, G. and C. Newman, "Date and Time on the Internet:
Timestamps", RFC 3339, DOI 10.17487/RFC3339, July 2002,
<https://www.rfc-editor.org/rfc/rfc3339>.
[RFC8174] Leiba, B., "Ambiguity of Uppercase vs Lowercase in RFC
2119 Key Words", BCP 14, RFC 8174, DOI 10.17487/RFC8174,
May 2017, <https://www.rfc-editor.org/rfc/rfc8174>.
[TEL] Schulzrinne, H., "The tel URI for Telephone Numbers",
RFC 3966, DOI 10.17487/RFC3966, December 2004,
<https://www.rfc-editor.org/rfc/rfc3966>.
[UUID] Peabody, B. and K. R. Davis, "New UUID Formats", Work in
Progress, Internet-Draft, draft-peabody-dispatch-new-uuid-
format-04, 23 June 2022,
<https://datatracker.ietf.org/doc/html/draft-peabody-
dispatch-new-uuid-format-04>.
7.2. Informative References
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[CBOR] Bormann, C. and P. Hoffman, "Concise Binary Object
Representation (CBOR)", RFC 7049, DOI 10.17487/RFC7049,
October 2013, <https://www.rfc-editor.org/rfc/rfc7049>.
[CDR] ITU, "Recommendation Q.825: Specification of TMN
applications at the Q3 interface: Call detail recording",
n.d., <https://www.itu.int/rec/T-REC-Q.825>.
[ISOBMFF] "Information technology -- Coding of audio-visual objects
-- Part 12: ISO base media file format", ISO/IEC
14496-12:2022, January 2022,
<https://www.iso.org/standard/83102.html>.
[JMAP] Jenkins, N. and C. Newman, "The JSON Meta Application
Protocol (JMAP)", RFC 8620, DOI 10.17487/RFC8620, July
2019, <https://www.rfc-editor.org/rfc/rfc8620>.
[JWT] Jones, M., Bradley, J., and N. Sakimura, "JSON Web Token
(JWT)", RFC 7519, DOI 10.17487/RFC7519, May 2015,
<https://www.rfc-editor.org/rfc/rfc7519>.
[SHA-512] Eastlake 3rd, D. and T. Hansen, "US Secure Hash Algorithms
(SHA and SHA-based HMAC and HKDF)", RFC 6234,
DOI 10.17487/RFC6234, May 2011,
<https://www.rfc-editor.org/rfc/rfc6234>.
[SIP-XFER] Sparks, R., Johnston, A., Ed., and D. Petrie, "Session
Initiation Protocol (SIP) Call Control - Transfer",
BCP 149, RFC 5589, DOI 10.17487/RFC5589, June 2009,
<https://www.rfc-editor.org/rfc/rfc5589>.
[vCard] Kewisch, P., "jCard: The JSON Format for vCard", RFC 7095,
DOI 10.17487/RFC7095, January 2014,
<https://www.rfc-editor.org/rfc/rfc7095>.
[vCon-white-paper]
Howe, T., Petrie, D., Lieberman, M., and A. Quayle, "vCon:
an Open Standard for Conversation Data", n.d.,
<https://github.com/vcon-dev/vcon/blob/main/docs/vCons_%20
an%20Open%20Standard%20for%20Conversation%20Data.pdf>.
Appendix A. Example vCons
This appendix contains example vCons in the unsigned, signed and
encrypted form. The JSON has been indented for readability. Long
text lines have been wrapped with a left hand white space indent for
readability purposes.
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A.1. Two Party Call vCon With Inline Recording
This example vCon is for a simple 2 party PSTN call. It has a single
Dialog Object which contains a single channel wav format recording
with the two parties audio mixed into the single channel.
{
"vcon": "0.0.1",
"parties": [
{
"tel": "+12345678901",
"name": "Alice"
},
{
"tel": "+19876543210",
"name": "Bob"
}
],
"dialog": [
{
"type": "recording",
"start": "2022-06-21T17:53:26.000+00:00",
"duration": 4.72,
"parties": [
0,
1
],
"mimetype": "audio/x-wav",
"filename": "ab_call.wav",
"encoding": "base64url",
"body": "UklGRioeAABXQVZFZm10IBQAAAAxAAEAQB8AAFkGAABBAAAAAg
gBAAWZhY3QEAAAAgJMAAGRhdGH2HQAAoxjXHYXCRekuye4gK4Tsiv4wZe
htuvu3RMkgyPXme4NeahQLG0yeLayx5HCIiRWK7psbQrQTFm57NwQJvIb
1aNxk6VpMYAXSm5Bb1rgStIStvEzmCaOIabxs2gjReJ02Rk0BQtOxHkhU
IZd4VGKoq1KuoCGhrZTx1vRZICuZEcgkGjdH2jiCU1a0NMW6BE8lVHN-O
FPHcZspr0CSl1aeo2hOWUx3CbovpGqKsApWteunk8gMPMOdynRVFWR5o0
2BvaQDcWugGRHrQa9NcEbG1LWQq_AWLpsXKdMQefGrZu4ZE2ZSDIRGJLT
pIzDybqSyZishQmjuVGztMKNlcyt2vW546JsutgllyppQWroAtHbkyrrG
x3bIiX81g1sR-oVaBbtkobA08fpJYscQSlHHcGm7hDriuWTRm8A6GKQ1F
cn10M30DcHctnEchwaAI7dxI2knYCQ5biNHB2Djxm3bFmyU5TA3ALZt3D
SeABIkiRJcm0AxpEkSZI7AEiSJEmSwUYZ1mQLYNu2bdumPWDbtm3b9gOA
EmSJFkFgCRJkiQZbHRhTccDtm3btm0qAEaOJEmSPABIkiRJkjAASJIkSZ
BRhfW9CKAJEmS49gCgCRJkiQ5P2Dbtm3bZgSAJEmSJClkcmVNLgBIkiRJ
m8ASJIkSZIvAkiSJEmOswM2btu2bcMVmd3kIoDkyJEkySOAJEmS3AgGgC
JkhypC2DjuG3j9mxOWQiyEUQ1DAtyvQJS9aTWWc4KuFqLO9F4CCJX4yeF
MaSUWSLYMkYinzGa4HzyrEi6-pgHVdXe6mugKzW7VqHYOzcDDsXWnJkeV
HFKpuLDZSrAroZOQohtASpE4dyZSRxozJQC6hJE2OLGiNYLM1ruIWzsCc
hEW6c3AJhq6bmp9cZ0IvAy2a5xJVcUMNE8Qq3G0CEJy30SNxwrUqUy5Nc
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WkI3S7UCk4iyrBM3AzCvJqkisQPQkcekWjYDoJk4DpWiPmUzXCtKFMkuy
g7MtWnrqLwMSqpjR8vXDipSKzk1D-bOjdLzgNQollapqqCUmjChmctA6j
mYPOLYJtHbatocTAZCfAQ3LHs6O2zDuCC_LyStAgkklFHZesUspXsSr0S
lCRYg-hXc2tKqMsgeqYkNzSVmLc9mk08zbhzUKO3fhkzJQsvBTCcNk2s-
UxO5zpatkETyFn-xtrxRaTR0hZk3WDo5ELiFWOq7hmMxgKjdcY0SO4Fk7
ijHC6EYNXEZI6oDUQz2EeJMMh1orxSOup04uUUjOtyjwVQ3HdhpuSRyJv
WzpRTo-so7pMpdgKWUk0jlEwjiqBJAwcuw5lca39VznGdMLAg6o-EEenb
EQxgkeS0xxEteISQcQUNPm8KxaV1xKKIq-BFEpsm_bjIFPLiJwpRoEoSZ
uqWuBJLuu1oxZC8ksQB0Wkt_IqrwaSMq8p4mzEPrFksdx9i9KZVv36AvG
MmyKsHI864U2eThk-iNKRsvgRsqL1vMTUHbPK2ZqVwNHW3oEIay3EaN7x
GgV4mmK8Q1k0O4jHPCFpRzHYxBtbOEZFMQeMoOVQ2F8GTOXvh9-qARmvO
H9MYaOpdTIFaS-ZJO4OGmZOvo3fEig5M8lQvwxinfXKhc4QrPGM0pIJth
KkixBYjvlZJlNwXTljSW8VWFex6tshg7BUiVuU8VoDtlMwRBEkqXknPYW
NFMRtW_FMhsVIpV4RDESZlqtFXHVI3GSmHZyNFMV24h48qsHAdLYeumkS
hTYG1Qp0LpWhr1UitEmaJ1DxuXwgGEe62VbkIUKKbdkv2CFhIZMdnkebS
RKzoCG7Uc32ywDkqkauEsuAzOqK1vnNoKFOtloMaa5YBWwbZI_aPtKzFM
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ZDCCisukrYW2QWUj1CrhUGrmp9grYb-oYUuwMOGlkzJLUCMht7lzQHpub
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}
],
"analysis": [],
"attachments": [],
"uuid": "018b4f72-d342-8696-b9a2-279e0d16bc46"
}
A.2. Text Chat vCon
TODO: text vCon example
A.3. Email Thread Multipart vCon
The following is an unsigned form of an vCon for a 2 message email
thread between 2 parties. The email messages are multipart MIME
message bodies.
{
"vcon": "0.0.1",
"group": [],
"parties": [
{
"mailto": "b@example.com",
"name": "Bob"
},
{
"mailto": "a@example.com",
"name": "Alice"
}
],
"dialog": [
{
Petrie & McCarthy-Howe Expires 5 September 2024 [Page 48]
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"type": "text",
"start": "2022-09-23T21:44:25.000+00:00",
"duration": 0,
"parties": [
0,
1
],
"mimetype": "multipart/mixed; \n\tboundary=\"----=_Part_388
8314_1108189513.1663969465698\"",
"encoding": "none",
"body": "------=_Part_388314_1108189513.1663969465698\r\nCo
ontent-Type: multipart/alternative;\r\n\tboundary=\"----=
Part_388313_805631480.1663969465697\"\r\n\r\n------=_Part
388313_805631480.1663969465697\r\nContent-Type: text/plai
; charset=UTF-8\r\nContent-Transfer-Encoding: 7bit\r\n\r\
Alice:Please find the image attached.\r\n\r\nRegards,Bob\
\n\r\n------=_Part_388313_805631480.1663969465697\r\nCont
nt-Type: text/html; charset=UTF-8\r\nContent-Transfer-Enc
ding: 7bit\r\n\r\n<html><head></head><body><div class=\"y
hoo-style-wrap\" style=\"font-family:Helvetica Neue, Helv
tica, Arial, sans-serif;font-size:16px;\"><div dir=\"ltr\
data-setdir=\"false\"><div><div dir=\"ltr\" style=\"font
family: "Helvetica Neue", Helvetica, Arial, san
-serif; font-size: 16px;\">Alice:</div><div dir=\"ltr\" s
yle=\"font-family: "Helvetica Neue", Helvetica,
Arial, sans-serif; font-size: 16px;\">Please find the ima
e attached.<br></div><div dir=\"ltr\" style=\"font-family
"Helvetica Neue", Helvetica, Arial, sans-serif
font-size: 16px;\"><br></div><div dir=\"ltr\" style=\"fo
t-family: "Helvetica Neue", Helvetica, Arial, s
ns-serif; font-size: 16px;\">Regards,</div><div dir=\"ltr
" style=\"font-family: "Helvetica Neue", Helvet
ca, Arial, sans-serif; font-size: 16px;\">Bob</div></div>
br></div></div></body></html>\r\n------=_Part_388313_8056
1480.1663969465697--\r\n\r\n------=_Part_388314_110818951
.1663969465698\r\nContent-Type: image/png\r\nContent-Tran
fer-Encoding: base64\r\nContent-Disposition: attachment;
ilename=\"=?UTF-8?b?c2NyZWVuc2hvdC5wbmc=?=\"\r\nContent-I
: <c4c28087-6fa1-395e-e50f-dcefd3d6bf96@yahoo.com>\r\n\r\
iVBORw0KGgoAAAANSUhEUgAAACYAAAAeCAIAAADPdvs5AAAAA3NCSVQIC
jb4U/gAAAAGXRFWHRT\r\nb2Z0d2FyZQBnbm9tZS1zY3JlZW5zaG907wO
PgAAALpJREFUSInl1t0NgzAMBOC7qPvP1gW6Qjdo\r\nj4f0J4qAJI6NR
vniE8+mwCvtzv6imTnyf1K/UclHUFWjIvaIL3CHCABSPKKtJckWfY6zw+
j5dq\r\nISdVIzmj2klzTZG2Rme7NKgOwY6qPrMcUs+2PqchL14P+oyz+
Hx77K5Sv8xyxAyZ0uBaxn/SpcU\r\n8NxcosAut1Y3NtjVX7UjZlmpgWT
FyvVQPKB16tSqW53bFnKtyyZvYT3rSsAWADWAlOjseYFfwAA\r\nAABJR
5ErkJggg==\r\n\r\n------=_Part_388314_1108189513.16639694
5698--\r\n"
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},
{
"type": "text",
"start": "2022-09-23T21:44:59.000+00:00",
"duration": 0,
"parties": [
1,
0
],
"mimetype": "multipart/alternative; \n\tboundary=\"----=_Pa
art_390234_811845464.1663969499935\"",
"encoding": "none",
"body": "------=_Part_390234_811845464.1663969499935\r\nCon
ntent-Type: text/plain; charset=UTF-8\r\nContent-Transfer
Encoding: 7bit\r\n\r\n Hi Bob:Got it. Thanks.\r\n\r\n
n Friday, September 23, 2022, 9:44:40 PM UTC, Bob <b@exam
le.com> wrote: \r\n \r\n Alice:Please find the image att
ched.\r\n\r\nRegards,Bob\r\n \r\n------=_Part_390234_811
45464.1663969499935\r\nContent-Type: text/html; charset=U
F-8\r\nContent-Transfer-Encoding: 7bit\r\n\r\n<html><head
</head><body><div class=\"ydp89e479a0yahoo-style-wrap\" s
yle=\"font-family:Helvetica Neue, Helvetica, Arial, sans-
erif;font-size:16px;\"><div></div>\r\n <div><div><
iv dir=\"ltr\" style=\"font-family: Helvetica Neue, Helve
ica, Arial, sans-serif; font-size: 16px;\">Hi Bob:</div><
iv dir=\"ltr\" style=\"font-family: Helvetica Neue, Helve
ica, Arial, sans-serif; font-size: 16px;\">Got it. Thanks
</div></div><br></div><div><br></div>\r\n \r\n
</div><div id=\"ydpdc5150a3yahoo_quoted_4829810715\" c
ass=\"ydpdc5150a3yahoo_quoted\">\r\n <div styl
=\"font-family:'Helvetica Neue', Helvetica, Arial, sans-s
rif;font-size:13px;color:#26282a;\">\r\n \
\n <div>\r\n On Friday,
September 23, 2022, 9:44:40 PM UTC, Bob <b@example.com
gt; wrote:\r\n </div>\r\n <
iv><br></div>\r\n <div><br></div>\r\n
<div><div id=\"ydpdc5150a3yiv4578005613\"><div>
div style=\"font-family:Helvetica Neue, Helvetica, Arial,
sans-serif;font-size:16px;\" class=\"ydpdc5150a3yiv457800
613yahoo-style-wrap\"><div dir=\"ltr\"><div><div dir=\"lt
\" style=\"font-family:Helvetica, Arial, sans-serif;font-
ize:16px;\">Alice:</div><div dir=\"ltr\" style=\"font-fam
ly:Helvetica, Arial, sans-serif;font-size:16px;\">Please
ind the image attached.<br></div><div dir=\"ltr\" style=\
font-family:Helvetica, Arial, sans-serif;font-size:16px;\
><br></div><div dir=\"ltr\" style=\"font-family:Helvetica
Arial, sans-serif;font-size:16px;\">Regards,</div><div d
r=\"ltr\" style=\"font-family:Helvetica, Arial, sans-seri
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;font-size:16px;\">Bob</div></div><br></div></div></div><
div></div>\r\n </div>\r\n </div></body>
/html>\r\n------=_Part_390234_811845464.1663969499935--\r
n"
}
],
"analysis": [],
"attachments": [],
"created_at": "2023-10-20T23:36:50.256+00:00",
"redacted": {},
"subject": "Account problem",
"uuid": "018b4f72-df56-82ac-b9a2-279e0d16bc46"
}
A.4. Email Thread Text vCon
The following is an unsigned form of an vCon for a 3 message email
thread between 2 parties. The email messages are plain text message
bodies.
{
"vcon": "0.0.1",
"group": [],
"parties": [
{
"mailto": "a@example.com",
"name": "Alice"
},
{
"mailto": "b@example.com",
"name": "Bob"
}
],
"dialog": [
{
"type": "text",
"start": "2022-09-23T23:24:59.000+00:00",
"duration": 0,
"parties": [
0,
1
],
"mimetype": "text/plain",
"encoding": "none",
"body": "Hi Bob:\nI just wanted to follow up to see that yo
our account is ok now.\n\nRegards,\nAlice\n\n"
},
{
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"type": "text",
"start": "2022-09-23T23:34:32.000+00:00",
"duration": 0,
"parties": [
1,
0
],
"mimetype": "text/plain; charset=UTF-8",
"encoding": "none",
"body": "Hi Alice:\nAll is fine. Thanks.\n\n On Friday,
September 23, 2022, 23:24:59 PM UTC, Alice <a@example.co
> wrote: \n \n Hi Bob:\n I just wanted to follow up to
see that your account is ok now.\n \n Regards,\n Alice
n"
},
{
"type": "text",
"start": "2022-09-23T23:38:12.000+00:00",
"duration": 0,
"parties": [
0,
1
],
"mimetype": "text/plain",
"encoding": "none",
"body": "Awesome!\n\n On Friday, September 23, 2022, 23:
:34: PM UTC, Bob <b@example.com> wrote: \n\n Hi Alice:\
All is fine. Thanks.\n \n On Friday, September 23
2022, 23:24:59 PM UTC, Alice <a@example.com> wrote: \n
\n Hi Bob:\n I just wanted to follow up to see tha
your account is ok now.\n \n Regards,\n Alice\n
}
],
"analysis": [],
"attachments": [],
"created_at": "2023-10-20T23:36:51.450+00:00",
"redacted": {},
"subject": "Account issue followup",
"uuid": "018b4f72-e3fb-8770-b9a2-279e0d16bc46"
}
A.5. Two Party Call vCon With Externally Referenced Recording
This example vCon is for a simple 2 party PSTN call. It has a single
Dialog Object which reference a single channel wav format recording
with the two parties audio mixed into the single channel.
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{
"vcon": "0.0.1",
"parties": [
{
"tel": "+12345678901",
"name": "Alice"
},
{
"tel": "+19876543210",
"name": "Bob"
}
],
"dialog": [
{
"type": "recording",
"start": "2022-06-21T17:53:26.000+00:00",
"duration": 4.72,
"parties": [
0,
1
],
"url": "https://raw.githubusercontent.com/dgpetrie/draft-pe
etrie-vcon/main/examples/ab_call.wav",
"mimetype": "audio/x-wav",
"filename": "ab_call.wav",
"signature": "Re9R7UWKaD7yN9kxoYLbFFNSKU8XfH18NFbTc3AgT4_aB
BubMtvGUEtRmP6XUxSS3Nl4LU-1mOCtezoTHQ67cVQ",
"alg": "SHA-512"
}
],
"analysis": [],
"attachments": [],
"uuid": "018b4f72-d0e7-8d8e-b9a2-279e0d16bc46"
}
A.6. Two Party Call vCon with Analysis
TODO: vCon with analysis example
A.7. Signed vCon
This example vCon is the signed form of the Two Party Call vCon With
Externally Referenced Recording (Appendix A.5) example. The private
key used to sign this can be found at:
https://raw.githubusercontent.com/vcon-dev/vcon/main/certs/fake_grp.key
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The certificate chain is included in the x5c parameter of the header
Object.
{
"payload": "eyJ2Y29uIjoiMC4wLjEiLCJwYXJ0aWVzIjpbeyJ0ZWwiOiIrMTI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",
"signatures": [
{
"header": {
"x5c": [
"MIID0TCCArkCAQEwDQYJKoZIhvcNAQELBQAwgasxCzAJBgNVBAYTAl
lVTMQswCQYDVQQIDAJNQTERMA8GA1UEBwwIRmFrZXRvd24xETAPBg
VBAoMCEZha2VWY29uMREwDwYDVQQLDAhEaXZpc2lvbjEYMBYGA1UE
wwPZGl2LmZha2V2Y29uLmlvMSEwHwYJKoZIhvcNAQkBFhJhZG1pbk
mYWtldmNvbi5vcmcxGTAXBgNVHREMEGRpdi5mYWtldmNvbi5vcmcw
hcNMjIwNjA0MDE0MzI1WhcNMzIwNjAxMDE0MzI1WjCBsDELMAkGA1
EBhMCVVMxCzAJBgNVBAgMAk1BMREwDwYDVQQHDAhGYWtldG93bjER
A8GA1UECgwIRmFrZVZjb24xDjAMBgNVBAsMBUdyb3VwMRwwGgYDVQ
DDBNncnAuZGl2LmZha2V2Y29uLmlvMSEwHwYJKoZIhvcNAQkBFhJh
G1pbkBmYWtldmNvbi5vcmcxHTAbBgNVHREMFGdycC5kaXYuZmFrZX
jb24ub3JnMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA
MtTCxeIROb1FmWIexe7Op95qYIVNEqn+fDghxWqoYm6T75BGsl4rB
txFQeef3Q5SJIzeqffJDssXDsyREuwQ2iTcOrZaZxs8h1NX9NjVD6
MAwx7tw0Cgmu8rj6+/Kjs0KI8OzCuDXZGTGf/bH6EQW85qYh9IF0P
ijf3uq+HCke6WApusx76LpUp36IzvYEuTbWBFeoLo+dyUdWmXpj0g
HiWZtT5zxJn9VrUhJX5KlaI0palWd0fOnr7mkdq79sFsKjEOcr1la
ceAicCpD3/zRW+7AS8atGKAMfe2CcXEABucI7DttLMXcDIJM6EOky
7n4due1RXGuNgnjeQIDAQABMA0GCSqGSIb3DQEBCwUAA4IBAQAQLj
KomSx1OqThhcO+aK0rzX6RjKh0eM0X7O7pPC81HxZKCDLhDvnUO9+
17U6ba0bTnznKYKKG7HnDcB4dKBbH8XP2u3EnDskyoMrKpYRsRKww
a8+RwOS7JEg+OtXYCRbWZvPjAC/z6o6OZK+QPTyK5Grw2Px2mTr6B
dBQv7XsYWBRwOZyvSGnKyK60jcPlYUnu6Qt0fYXiYp6qF5l956fuT
d2UyDkM7S/Z7K+OC9+aIBNKH32B3nfXqZPuP8WuiTOxcMwnefPwjx
qndFUkyk2Y+i6nXU8oN/DGUOTfY4xbm3s3q7Dq5QPtq5kljB9yYkv
OULCSAmWBZl+G",
"MIIEyTCCArECAQEwDQYJKoZIhvcNAQELBQAwgagxCzAJBgNVBAYTAl
lVTMQswCQYDVQQIDAJNQTERMA8GA1UEBwwIRmFrZXRvd24xFTATBg
VBAoMDEZha2VWY29uIEluYzESMBAGA1UECwwJQ29ycG9yYXRlMRQw
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gYDVQQDDAtmYWtldmNvbi5pbzEhMB8GCSqGSIb3DQEJARYSYWRtaW
AZmFrZXZjb24ub3JnMRUwEwYDVR0RDAxmYWtldmNvbi5vcmcwHhcN
jIwNTI5MjEzOTMxWhcNMzIwNTI2MjEzOTMxWjCBqzELMAkGA1UEBh
CVVMxCzAJBgNVBAgMAk1BMREwDwYDVQQHDAhGYWtldG93bjERMA8G
1UECgwIRmFrZVZjb24xETAPBgNVBAsMCERpdmlzaW9uMRgwFgYDVQ
DDA9kaXYuZmFrZXZjb24uaW8xITAfBgkqhkiG9w0BCQEWEmFkbWlu
GZha2V2Y29uLm9yZzEZMBcGA1UdEQwQZGl2LmZha2V2Y29uLm9yZz
CASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAM81SKie1S78
AOBDc3LflYNSL9phecmjQs/9P+iqDXSVm3xpoqszGoLn7w21aUAxl
+F9Z80Tc70URn2qqUcVTYcx3SmgHuYgspEmJsMRor/mn3HpHr2ajh
26RKgDGPBrtebeH1si8mX15a/ICzHxrUaE2Y/6DZ/2wGTXrAE4bYA
UaYft5GGSZl6yP6dXg3EJy2bK2cUTdMIZG/Y7Ny1D3N4V7MBirDd5
U7k6pMbyr3d/xoi8VL8F1mRCf6zxfFOjaMFT0atEiTp3M0rw6iS08
y0cDFsPJzIcPgXEitUgGPo/NLgeb8ZmL1kg9B2vMgaanbuZB6il79
4GgDIUCAwEAATANBgkqhkiG9w0BAQsFAAOCAgEAWOJJlvSQDsDROQ
NdX3kMkAH3HYyAlE7LHNtIYHVhyt7I7WuqS6ZGvSoxSfkT0GdAN7c
+jchdZpAnpCXGX+yHuSvrw4oSqigdSLeSUMx2zaSv4wLAvydC/zDk
IRObyuDEKyy/pa4Na0aunPU3E1Bg0V+JqQ3RUJIy1v6AGLrliwaEI
P3Clzi/u640dWBHabOEjxFj9bX73+FRWhit4EzOJYKvti1EXlmRjM
j3SmsrcbGMrpu4WipEG5S05VlMhXXSyQq9IScFho5CFtamDgI3jL4
lyrx0+CcjDkw0nW9fXdAtB3BhSYEXdLuJAvLRQixUQFwH23doumPi
uW8euEhHTRo1pEFWQ5U59NOTUA5Ghuupo0aM2CnDD5Re8uO3ChilC
b0FlwgMD/7ABSd1LChU8iluhKy9CEBR2zc8uTqW43Gcv/psBaejgO
JlxZuusGVvuV1nTHRa4hmFYxxPel7ogeZzGQqFjBlb35CE+BcGYY0
iaHefy+fmi/fN6NrrN6pBOPjVZbpCFn+wFTUyrMU5Vq/FaPe0us7i
paQcwIz9wyide5OztpxebY8UnXmy22X+6PkHB0jnL35Qe8xl7Z0nM
Ndy4xkzGgaa6talRDPhKkY1lIdw+KdCXJuUc7rkLKa5po9SPdvVLh
Pu26SHkI0I+d5hz+gMp8=",
"MIIGMzCCBBugAwIBAgIUHk/6QbzjDZ9AONAFvwYJqB/jbvowDQYJKo
oZIhvcNAQELBQAwgagxCzAJBgNVBAYTAlVTMQswCQYDVQQIDAJNQT
RMA8GA1UEBwwIRmFrZXRvd24xFTATBgNVBAoMDEZha2VWY29uIElu
zESMBAGA1UECwwJQ29ycG9yYXRlMRQwEgYDVQQDDAtmYWtldmNvbi
pbzEhMB8GCSqGSIb3DQEJARYSYWRtaW5AZmFrZXZjb24ub3JnMRUw
wYDVR0RDAxmYWtldmNvbi5vcmcwHhcNMjIwNTI5MjEzOTMxWhcNMz
wNTI2MjEzOTMxWjCBqDELMAkGA1UEBhMCVVMxCzAJBgNVBAgMAk1B
REwDwYDVQQHDAhGYWtldG93bjEVMBMGA1UECgwMRmFrZVZjb24gSW
jMRIwEAYDVQQLDAlDb3Jwb3JhdGUxFDASBgNVBAMMC2Zha2V2Y29u
mlvMSEwHwYJKoZIhvcNAQkBFhJhZG1pbkBmYWtldmNvbi5vcmcxFT
TBgNVHREMDGZha2V2Y29uLm9yZzCCAiIwDQYJKoZIhvcNAQEBBQAD
gIPADCCAgoCggIBAMIeaqkm8pn6mwUzWBgnQiY9Jr3VyVamxBc9/d
T8eCN9mmANGzX5zGj86KtGjlDcoAzANrtsr2Dpz4zra29HWbwbOa1
TOOaR93QgifkS802zp+zHGGRaKlq3euDqDVzyXinhsvXOVlEwkOrA
V6kUcTIzcxVibrFfHttzv/hXUNxjCouAE7MIG6wO8y+E2bBkg7R5y
feU4Q9npBefwtiQ8oWf0C46mDYFQ8l31goae17VpiyS3t4h5HL+1y
dYJSWms5Qh0vp9req5AjwuHIDBxNLpO2gY1SQmSdO03oLcZwBglGK
pQSwYgr9J5uo2B+NV9aYKEO51bySinSF8T4D/o4cq6oyJLXBwmSsL
jjVIQBoSdRBmWh8zE2ZzFNaaBlYO9ikIaWXwbtkbsE+4QpOaOj/kU
HLFI9iOhOidsInaOfgYzw12FtGE1Wq5x5XszwWpPWU8NQw8gzTzFz
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ObxrfcsXrs0s6feuTCDMt5Zht2HCWFr9TmYDFAfOB05kFWTi5sE5K
aP54iJvjAFmuTDjlif7Z8ZWVal9XB+g3sMyQ8DVEj/0dXS+nRVuJQ
UH4ql9SUIwK63RKdedALYC6X1j2lgK9aTuL+cyNJ5SbuNA95CxNgv
tBrcO6HxlbmIDxKrAAo5aj4hnlQcY4RRbNwppCAjK+zcASlpyvRAg
BAAGjUzBRMB0GA1UdDgQWBBSSDtfqU6+DEyYPCar08yVnnZSFzTAf
gNVHSMEGDAWgBSSDtfqU6+DEyYPCar08yVnnZSFzTAPBgNVHRMBAf
EBTADAQH/MA0GCSqGSIb3DQEBCwUAA4ICAQC8JDxTdmc86YFdKElW
nWxoPMsPeRyDYQoVTC2wydZsdJ5dGbkAhYlPPxK+zypP18fGry5PH
Hl9mZYz+FdGjNTwllcfN9/G0Sdoy4kU9eN9KfC9OUIkBIq8D0r7AN
3l3XmGbnIxWJEtb0SyTcqk3dwWcNTqGguhQ03jUKW5yUpVoQjN4Tt
HyweoYTNi+HKsCUvEXGdA9wdh4jVOqYeepmsax5eTUJsKuCKqQ3+x
7JONw85imfVotySCXsoMe7luSRYuldn8SBIpKYUGJlpWIi6Gr0mLw
arrYoi9bwtcKAxRNXZiGQghiUw2Zsw+jmgBrEtI4Iarg8wWqJ5Mov
MsTVpnoZ5Xywr0GznDlgcNtyqMibOULeM8yLPQrHn/tQjSiP3eUPz
+Zb9FqzQJCCi2UiauD4mOgzBSCCbew9PDYb2QeMZqNZmN3eVNMV4h
7t9jTc0zqPF5jluddVmpdHxLx/T9XZuSV21p8clNprJNQxprtHpxD
jhNMIrcV39rzi9tNikwmzRMf0r40f/JWnaV668sekDXtvIj8pZwyE
FNuaiJwojkQxDfjqk67Qs5NUQsFcaIwMes8It74ASHm8DUKEhDT2A
gMtUDwKWrOBefrSPqjY7+EMh2yVZnQhMwpx4s7CH0za32Yq+KC8Go
HdI6jisDEom7aHglg=="
],
"alg": "RS256"
},
"signature": "j1oaH9KX2VCKHun3b7VqQjo1wV12VgddOv68Z4oeY_gpW
Wp3EfXs8LFLDpseKdLJcyn8HlhyhXvf5cAdTbv6DSCYAMOebpmo3sHXu8
Cv0PzRQ7XjA82aPZ27l73VuLjFFZGJoVm0W6ZGSLy523zUeQbbmvU6Hqf
d3m0oZVg2kxKDDyLQRHrWVVoSNA7JpOrVQvWO5dDlYd2kTjIml7DOm_RW
WAboNhD4fRVcC3ujJdxdzsWjU7sw2CAZz7sUhchQvJobSmjK6t0uiXdL5
e1anPvUG72KRrj6AxiSuqX6hGdc1UWJ7flj6Fsj2ifpbS1-jYJXA-zZc7
kmbYcETg",
"protected": "eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCIsIng1YyI6W
WyJNSUlEMFRDQ0Fya0NBUUV3RFFZSktvWklodmNOQVFFTEJRQXdnYXN4Q
pBSkJnTlZCQVlUQWxWVE1Rc3dDUVlEVlFRSURBSk5RVEVSTUE4R0ExVUV
d3dJUm1GclpYUnZkMjR4RVRBUEJnTlZCQW9NQ0VaaGEyVldZMjl1TVJFd
R3WURWUVFMREFoRWFYWnBjMmx2YmpFWU1CWUdBMVVFQXd3UFpHbDJMbVp
YTJWMlkyOXVMbWx2TVNFd0h3WUpLb1pJaHZjTkFRa0JGaEpoWkcxcGJrQ
1ZV3RsZG1OdmJpNXZjbWN4R1RBWEJnTlZIUkVNRUdScGRpNW1ZV3RsZG1
dmJpNXZjbWN3SGhjTk1qSXdOakEwTURFME16STFXaGNOTXpJd05qQXhNR
UwTXpJMVdqQ0JzREVMTUFrR0ExVUVCaE1DVlZNeEN6QUpCZ05WQkFnTUF
MUJNUkV3RHdZRFZRUUhEQWhHWVd0bGRHOTNiakVSTUE4R0ExVUVDZ3dJU
1GclpWWmpiMjR4RGpBTUJnTlZCQXNNQlVkeWIzVndNUnd3R2dZRFZRUUR
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FRa0JGaEpoWkcxcGJrQm1ZV3RsZG1OdmJpNXZjbWN4SFRBYkJnTlZIUkV
RkdkeWNDNWthWFl1Wm1GclpYWmpiMjR1YjNKbk1JSUJJakFOQmdrcWhra
c5dzBCQVFFRkFBT0NBUThBTUlJQkNnS0NBUUVBdE10VEN4ZUlST2IxRm1
SWV4ZTdPcDk1cVlJVk5FcW4rZkRnaHhXcW9ZbTZUNzVCR3NsNHJCOXR4R
FlZWYzUTVTSkl6ZXFmZkpEc3NYRHN5UkV1d1EyaVRjT3JaYVp4czhoMU5
OU5qVkQ2TU1Bd3g3dHcwQ2dtdThyajYrL0tqczBLSThPekN1RFhaR1RHZ
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9iSDZFUVc4NXFZaDlJRjBQdmlqZjN1cStIQ2tlNldBcHVzeDc2THBVcDM
SXp2WUV1VGJXQkZlb0xvK2R5VWRXbVhwajBnaEhpV1p0VDV6eEpuOVZyV
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lrd216Uk1mMHI0MGYvSlduYVY2NjhzZWtEWHR2SWo4cFp3eUU0Rk51YWl
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}
]
}
A.8. Encrypted vCon
This example vCon is the encrypted form of the Signed vCon
(Appendix A.7) example. The private key to decrypt it can be found
at:
https://raw.githubusercontent.com/vcon-dev/vcon/main/certs/fake_grp.key
{
"protected": "eyJhbGciOiJSU0EtT0FFUCIsImVuYyI6IkEyNTZDQkMtSFM1M
MTIifQ",
"iv": "bRXfuElSzF-3ZzRWO41y0w",
"cyphertext": "vwadXQolqlYaS0hTsl122Bo_xK_1pq4Be1YqTQj485y7uU1e
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Internet-Draft JSON vCon March 2024
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"tag": "AGv6XiYay5aigC3MosZRqr3m3PsM24jIkf4N2DLpAQg",
"recipients": [
{
"header": {
"enc": "A256CBC-HS512"
},
"encrypted_key": "NTbM-Wy6TryKiaQxekGz1luPLhQdiRlBuSv9vZKVc
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}
]
}
A.9. Redacted Signed vCon
TODO: redacted vCon example
A.10. Appended Signed vCon
TODO: appended vCon example
A.11. vCon Group
TODO: group vCon example
Acknowledgments
TODO: acknowledgements
Petrie & McCarthy-Howe Expires 5 September 2024 [Page 65]
Internet-Draft JSON vCon March 2024
Authors' Addresses
Daniel G Petrie
SIPez LLC
Email: dan.ietf@sipez.com
Thomas McCarthy-Howe
Strolid
Email: thomas.howe@strolid.com
Petrie & McCarthy-Howe Expires 5 September 2024 [Page 66]
