Mobile Driver's License Presentation

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
• 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

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.

Request

data	mDL				DIF				Comments
Device request	1 byte (CBOR data item header)		Variable	Variable	1 byte (CBOR data item header)		Variable	Variable	etc...
version	Major type	Additional information	Payload length (optional)	Data payload (optional)	Major type	Additional information	Payload length (optional)	Data payload (optional)	etc...
docRequests	3 Bits	5 Bits	8 Bits × variable	8 Bits × variable	3 Bits	5 Bits	8 Bits × variable	8 Bits × variable	etc..

Reference

• GitHub issues of the Presentation Exchange.