Auth0

This tutorial demonstrates how to integrate Criipto Verify with Auth0. The following steps are required to complete your first login:

1. Register your Auth0 tenant in Criipto Verify
2. Configure your OAuth2 flow
3. Create Auth0 connections
4. Integrate your application with Auth0

In the following you will be configuring first Criipto Verify, then Auth0, and finally finishing the Criipto Verify configuration with the information you get from Auth0. Once configured you may test that everything works from Auth0.

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Register your Auth0 tenant in Criipto Verify

First, you must register your Auth0 tenant as an application in Criipto Verify.

Once you register your Auth0 tenant, you will also need some of the information for configuring Auth0 to communicate with Criipto Verify. You get these details from the settings of the application in the dashboard.

Specifically you need the following information to integrate with Auth0:

• Client ID to identify your Auth0 tenant to Criipto Verify. In the case below we chose urn:criipto:samples:no1
• Domain on which you will be communicating with Criipto Verify. Could be for example samples.criipto.id
• Client secret is needed if you choose the Back Channel approach - which we do recommend. The secret is generated and copied as described further down.

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Configure the OAuth2 code flow

If you are registering a new application, you must first save the configuration.

Once you have a saved application registration you may configure the OAuth2 code flow.

Open the application registration and configure it for the right OAuth2 flow:

1. Enable OAuth2 code flow
2. Copy the generated client secret.
3. Set the user info response strategy to plainJson to enable retrieval of plain JSON user information from the /oauth2/userinfo endpoint.

Note that this is the only time you will be shown the actual value of the client secret. Criipto only stores this as a hashed value, which means you cannot retrieve the value once it has been generated and stored.

You may configure Criipto Verify to retrieve the user information from either the userinfo endpoint - the default option - or you may explicitly choose the fromTokenEndpoint in the user info response strategy instead:

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Create Auth0 connections

You can leverage either an Enterprise Connection, or a Custom Social Connection to connect Criipto Verify with Auth0.

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Login-method specific endpoints

To integrate Criipto Verify with Auth0, you create an Auth0 OpenID Connect(OIDC) connection to communicate with Criipto Verify. Because Auth0 will not pass the acr_values to Criipto Verify, you will have to create a new connection for every eID option that you intend to use. (acr_values is a parameter in the /authorize request to Criipto Verify needed to specify which kind of eID is requested).

For those cases, you can leverage our login-method specific metadata endpoints (for Enterprise Connections) and authorize URLs (for Custom Social Connections). Each of these contain an embedded and base64-encoded variant of the "raw" value normally supplied in the acr_values.

Syntax:

• Issuer metadata endpoint: https://yourdomain.criipto.id/BASE64(acr_values)/.well-known/openid-configuration
• Authorize URL: https://yourdomain.criipto.id/BASE64(acr_values)/oauth2/authorize

For example, the acr_values of Norwegian BankID login method is urn:grn:authn:no:bankid. This translates to dXJuOmdybjphdXRobjpubzpiYW5raWQ= in base64 (UTF-8 charset), so the syntax will be:

• Issuer metadata endpoint: https://yourdomain.criipto.id/dXJuOmdybjphdXRobjpubzpiYW5raWQ=/.well-known/openid-configuration
• Authorize URL: https://yourdomain.criipto.id/dXJuOmdybjphdXRobjpubzpiYW5raWQ=/oauth2/authorize

Choose the specific login method

Below is a list of supported login methods with the corresponding base64 encoded acr_values. Choose the ones you intend to use.

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Enterprise Connection

You can connect Auth0 to Criipto Verify by creating an OIDC Enterprise Connection. You create an OIDC connection for every login method you intend to use.

Create the OIDC connection(s)

1. Go to Auth0 dashboard for your tenant and under Authentication choose Enterprise.
2. Select OpenID Connect and create a new connection.
3. Enter Connection name.
4. Under Issuer URL enter the login-method specific URL, as described above.
5. Under Client ID enter the Client ID/Realm from your Criipto Verify application.
6. Copy the Callback URL generated by Auth0 and enter it under Callback URLs in Criipto Verify application management.
7. Back in the Auth0 dashboard, create a connection by clicking Create.
8. After the connection is created, go to the Settings tab.
9. Choose Front Channel or Back Channel as a Type, depending on how you intend to integrate it with your application.

• you should choose Front Channel only if you are developing a pure SPA application. Otherwise, choose Back Channel.

10. If you chose Back Channel as a Type, enter the Client Secret generated by Criipto Verify when you enabled the OAuth2 Code Flow.
11. Select Save Changes.
12. Make sure to enable the created connection for your Auth0 application.

Test the connection

To test your OpenID Connect connection, go back to the list of all OpenID Connect connections and select Try button on the right side of the connection you want to test. You will need a test user to perform testing.

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Custom Social Connection

Alternatively, you can leverage a Custom Social Connection to integrate with Criipto Verify via OpenID Connect. Create an OIDC connection for every login method you intend to use.

Create the OIDC connection(s)

1. Go to Auth0 dashboard for your tenant and under Authentication choose Social.
2. Select Create Connection, go to the bottom of the list, then choose Create Custom.
3. Enter Connection name.
4. Under Authorization URL enter a login-method specific authorize URL to which your users will be redirected to log in to your application, e.g. https://yourdomain.criipto.id/oauth2/authorize/dXJuOmdybjphdXRobjpubzpiYW5raWQ=/?scope=openid&client_id=urn:criipto:samples:no1&redirect_uri=https://jwt.io&response_type=code
5. Under Token URL, enter your token endpoint: https://yourdomain.criipto.id/oauth2/token
6. Under Client ID enter the Client ID/Realm from your Criipto Verify application.
7. Under Client Secret enter the Client Secret generated by Criipto Verify when you enabled the OAuth2 Code Flow.
8. Add the required Fetch User Profile Script using your userInfo endpoint, e.g.:

function fetchUserProfile(accessToken, context, callback) {
  request.get(
    {
      url: 'https://yourdomain.criipto.id/oauth2/userinfo',
      headers: {
        Authorization: 'Bearer ' + accessToken,
      },
    },
    (err, resp, body) => {
      if (err) {
        return callback(err);
      }
      if (resp.statusCode !== 200) {
        return callback(new Error(body));
      }
      let bodyParsed;
      try {
        bodyParsed = JSON.parse(body);
      } catch (jsonError) {
        return callback(new Error(body));
      }
      const profile = {
        user_id: bodyParsed.uuid,
        name: bodyParsed.name,
      };
      callback(null, profile);
    }
  );
}

9. Create a connection by clicking Create.
10. Make sure to enable the created connection for your Auth0 application.
11. Lastly, add Auth0's callback URL (https://{yourAuth0Domain}/login/callback) to your Criipto Verify application. Go to your Criipto Dashboard, and enter the Auth0 Callback URL under Callback URLs in Criipto Verify application management.

Test the connection

Test your Custom Social Connection by clicking the Try Connection button located in the top right corner.

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Test users

Almost all eID types have a notion of test users and real users.

Real users are real people logging in to a web site, thus voluntering their real name and typically also a social security number, SSN.

Test users are either created by you for the occasion, or we provide you with access to already created test users.

You may read more in the section on eIDs

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Integrate your application with Auth0

How to integrate your application with Auth0 depends on the technology you are working with. Refer to the Auth0 quickstart guide for more details.