Difference between revisions of "Mobile Driver's License Presentation"

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(Security)
(Request)
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==Request==
 
==Request==
 
{| class="wikitable" style="text-align: center;"
 
{| class="wikitable" style="text-align: center;"
!data|mDL|DIF!Comments
+
!scope="row"|data
 +
|mDL
 +
|DIF
 +
!Comments
 
|-
 
|-
 
!scope="row" |Device request
 
!scope="row" |Device request
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|etc..
 
|etc..
 
|}
 
|}
 +
 +
DIF Example
 +
</pre>
 +
{
 +
  "id": "drivers_license_information",
 +
  "name": "Verify Valid License",
 +
  "purpose": "We need to know you have a license valid through December.",
 +
  "metadata": {
 +
    "client_id": "4fb540be-3a7f-0b47-bb37-3821bd766ed4",
 +
    "redirect_uri": "https://yourwatchful.gov/verify"
 +
  },
 +
  "schema": [
 +
    {
 +
      "uri": "https://yourwatchful.gov/drivers-license-schema.json",
 +
      "required": true
 +
    }
 +
  ],
 +
  "constraints": {
 +
    "fields": [
 +
      {
 +
        "path": ["$.expirationDate"],
 +
        "filter": {
 +
          "type": "string",
 +
          "format": "date-time",
 +
          "min": "2020-12-31T23:59:59.000Z"
 +
        }
 +
      }
 +
    ]
 +
  }
 +
}
 +
</pre>
  
 
==Response==
 
==Response==

Revision as of 13:07, 15 January 2021

Full Title or Meme

Mobile Driver's License Presentation maps ISO 18013-5 wallet presentation to DIF Presentation Exchange.

Context

  • The DIF Presentation Exchange is looking for test cases. This is such a test case (ie a use case with teeth).
  • This use case looks at the wallet as the source of Presentation Statements, which is not necessarily the full scope of the DIF WG.

Actors

  • Holder = The entity that submits proofs to a Verifier to satisfy the requirements described in a Presentation Definition (may or may not be the subject)
  • mDL holder = individual to whom an mDL is issued = legitimate holder of the driving privileges reflected on an mDL = subject of the mDL
  • Device = smartphone or similar with a trusted wallet (in the ISO docs this is conflated with the doc that resides on the device (aka mdoc)
  • Verifier = The entity that defines what proofs they require from a Holder (via a Presentation Definition) in order to proceed with an interaction.
  • mDL verifier = entity using an mDL reader to verify an mDL
  • Issuing Authority = trusted signer of data elements
  • Trust Authority = TBD source of certs

Transaction

  1. The holder and verifier establish a session
  2. The verifier asks for mDL data
  3. mDL send data by value or by reference
  4. The verifier may or may not request other data
  • Transport can be by various NFC or QR code.
  • Format is CBOR - represented here as json.

Security

data mDL DIF Comments
Encryption Encrypting with authentication of the mdoc requests and mdoc responses protects mdoc data from eavesdropping and alteration. 1 byte (CBOR data item header) etc...
session keys standard ephemeral key ECDH to establish session keys Additional information etc...
Reader <-> Trust authority 3 Bits | etc..
Reader <-> Holder|n/a|assurances as to the provenance, identity, or status of a Presentation Definition from digital signatures may be required|etc..

Request

data mDL DIF Comments
Device request The point of this piece is the assurance that the device is trustworthy Presentation Request etc...
version|tstr Additional information Payload length (optional) Data payload (optional) etc...
Security 3 Bits 5 Bits etc..

DIF Example </pre> {

 "id": "drivers_license_information",
 "name": "Verify Valid License",
 "purpose": "We need to know you have a license valid through December.",
 "metadata": {
   "client_id": "4fb540be-3a7f-0b47-bb37-3821bd766ed4",
   "redirect_uri": "https://yourwatchful.gov/verify"
 },
 "schema": [
   {
     "uri": "https://yourwatchful.gov/drivers-license-schema.json",
     "required": true
   }
 ],
 "constraints": {
   "fields": [
     {
       "path": ["$.expirationDate"],
       "filter": {
         "type": "string",
         "format": "date-time",
         "min": "2020-12-31T23:59:59.000Z"
       }
     }
   ]
 }

} </pre>

Response

Reference