Addresses
thatthe can were a verifier cannot supply a challenge to proof the credential
Description (User Story)
The very first credentials were just parchements with a seal in wax or other media, like the Chinese "Chop" mark. These type of credential remain the most common today. This use case addresses credentials that can be read in digital format, but not modified by the user app in any way.
Narrative
There are two media that are most common for an RO digital cred today: (1) The NFC card and (2) a bar code, or QR code containing the information. These are given to the user in for storage on a mobile phone, or printed on a card or piece of paper. It is common for credentials installed on a mobile phone to also be provided as a bar or QR code to handle cases where the phone is non-functional for some reason.
Secondary Use Case
It is also possible for the verifier to obtain additional credentials as well as the RO Cred including a proof of presence response to a nonce transmitted by the Verifier.. That case is not addressed her because the primary cred is still just an RO cred.
Many RO creds are also available using a BLE (Bluetooth Low Energy) or other radio, but these are similar to NFC and so are not further considered.
Actors
Actor | Role in the use case |
---|---|
Holder | of the cred |
Verifieretcetera | of the cred |
NFC card | hold the cred |
User Stories
Element | Detail | Notes |
---|---|---|
As a, | <description of user> | |
I want | <functionality> | |
so that | <benefit> | |
Acceptance Criteria | ||
Given | <how things begin> | |
When | <action taken> | |
Then | <outcome of taking action> |
...