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ProofSpace provides an auto generated code and library to simplify integration of QR/Web-link into your web site.

Instructions

Library options
ssi-auth-lib library shows QR for desktop browsers and Web-link button for mobile browsers to trigger the interaction. It has two options:
1. Show QR/Web-link to trigger an interaction with QR initiation media selected.
2. Show QR/Web-link to trigger an interaction with QR initiation media selected and support SSI OAuth flow configured on the dashboard for this particular interaction.
Library can be included
1. as builded bundle
  <script src="<path_to_lib>/wl.js"></script>
2. or as npm library https://www.npmjs.com/package/ssi-auth-lib
  npm install ssi-auth-lib –save
  const ProofSpace = require(‘ssi-auth-lib’)

Usage

For the pure interaction without SSI OAuth flow

ProofSpace.WebLinker.start(elem, {
 serviceDid: <YOUR_SERVICE_DID>,
 interactionId: <YOUR_OAUTH_ACTION_ID>,
 instanceId: <YOUR_OAUTH_INSTANCE_ID>,
 size: 300 // size of QR code in pixels
}).then(() => {
 console.log(‘QR Initialized’);
});

For the interaction with SSI OAuth flow

ProofSpace.WebLinker.startWithSSIOAuth(elem, {
 serviceDid: <YOUR_SERVICE_DID>,
 interactionId: <YOUR_OAUTH_ACTION_ID>,
 instanceId: <YOUR_OAUTH_INSTANCE_ID>,
 size: 300 // size of QR code in pixels
}).then((result) => {
 console.log(result.access_token);
});

Both start and startWithSSIOAuth has 3 parameters:
start(element, config, preFilledCredentials)
where

element - HTMLDivElement to show QR code (or button in case mobile device)
If you want to use popOverMode, then element must contain some visible elements like button or image
config - structure

{
  size?: number; // size of QR-code in pixels
  env?: Env; // environment config, used for test, stage or local environment. Prod by default
  serviceDid: string; // your service did
  interactionId: string; // id of your interaction
  instanceId: string; // id of your interaction instance 
  button?: BtnConfig; // config for styling button for mobile web link
  timer?: Style; // style for timer element (for SSIOAuth)
  qr?: Style; // style for QR element
  returnToBrowser?: boolean; // use callback for return to browser page
  popOverMode?: boolean; // use PopOver with QR code for desktop
  log?: LogFn; // function for logs (debug info)
}

preFilledCredentials - array of Pre-filled Credential structures

This section is used when the interaction contains Self-Attested credentials that should be pre-filled from QR/Web-link e.g. Session ID or User ID to match your user with the credentials shared by ProofSpace App user and received by your backend via webhook.

{
  credentialId: '<YOUR_CREDENTIAL_ID>',
  attributes: [
    {name: '<Attribute1 name>', value: '<Attribute1 value>'},
    {name: '<Attribute2 name>', value: '<Attribute2 value>'},
    // ... other pre-filled attributes
  ]
}

Note: the attribute values should all be string.

According to the attribute type, which is set in the credential schema, values should be set to:
Text — text itself
Date — string with the number of seconds since epoch.
Number — number as string. If this number is float, than '.' used as decimal point "222.2222"
ImageURL -- url as string. // NOT USED YET
Enumeration -- numeric enumeration value as string, i.e. "0", "1",..etc

Actual value types will be casted on credential attribute display in the app according to the credential schema attribute types.

env : Env is required if you want to use own OAuth server or service container, by default it uses ProofSpace PROD URIs.
Env template:

{
  containerURIPrefix: string
  SSIAuthenticationCredDefId: string;
  authServiceUrl: string;
  nativeURIPrefix: string
}

Or you can use predefined TEST and STAGE ProofSpace env if you have your services up and running there:

ProofSpace.ENV.TEST for the Testing Environment

ProofSpace.ENV.STAGE for the Staging Environment

Example:

ProofSpace.WebLinker.start(elem, {
 env: ProofSpace.ENV.STAGE,
 serviceDid: <YOUR_SERVICE_DID>,
 interactionId: <YOUR_OAUTH_ACTION_ID>,
 instanceId: <YOUR_OAUTH_INSTANCE_ID>,
 size: 300 // size of QR code in pixels
}).then(() => {
 console.log(‘QR Initialized’);
});

BtnConfig structure

{
  class?: string; // css class
  style?: string; // css class
  text?: string; // button text. Default is 'Start interaction'
  icon?: string; // image url for button icon
  textStyle?: Style;
  iconStyle?: Style;
  target?: string; // browser target. Default is _self
}

Style structure:

{
  class?: string; // css class
  style?: string; // css class
}

To simplify the integration ProofSpace Dashboard can show the test QR and generate the code to embed for your interactions.

Example:

ProofSpace Knowledge Base > How-to integrate QR/Web-link to trigger Interaction > image-20230127-145955.png

ProofSpace Knowledge Base > How-to integrate QR/Web-link to trigger Interaction > image-20230127-150609.png

5. You may find a few examples through the links:

Pre-filled credentials

SSI OAuth Demo

Instructions

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