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Version: v1

Integrate With Auth0

Last updated on

This guide describes how to configure Auth0 to delegate to Beyond Identity for authentication during an OAuth2 authorization flow.

Prerequisites​

NextAuth.js

This guide uses NextAuth for all OAuth/OIDC flows. All code snippets are provided in the context of the NextAuth Example App.

Configuring NextAuth​

Under next-auth-example/pages/api/auth/[...nextauth].ts, add the following Auth0 provider:

import Auth0Provider from "next-auth/providers/auth0";
...
providers: [
  Auth0Provider({
    clientId: <AUTH0_ID>,
    clientSecret: <AUTH0_SECRET>,
    issuer: <AUTH0_ISSUER>
  })
]
...

Note that you'll need to fill in the <AUTH0_ID>, <AUTH0_SECRET>, and <AUTH0_ISSUER> with the values you generated when creating your application in Auth0. See the following guide mentioned in the prerequisites.

Wiring up embedded.authenticate​

Create a bi-authenticate.tsx page under /next-auth-example/pages. As long as your invoke_url is configured properly, this is the page that will be redirected to during an authorization flow. copy the following code snippet into that page.

import { useEffect, useState } from "react";
import "bootstrap/dist/css/bootstrap.css";
import { Passkey } from "@beyondidentity/bi-sdk-js";

const BIAuthenticate = () => {
  const [biAuthenticateResult, setBiAuthenticateResult] = useState("");

  useEffect(() => {
    // -- 1
    const authenticate = async () => {
      const BeyondIdentityEmbeddedSdk = await import("@beyondidentity/bi-sdk-js");
      let embedded = await BeyondIdentityEmbeddedSdk.Embedded.initialize();
      if (embedded.isAuthenticateUrl(window.location.href)) {
        // Only authenticate if the URL is a "bi-authenticate" URL
        let biAuthenticateUrl = window.location.href;
        // -- 2
        biAuthenticate(biAuthenticateUrl).then(redirectUrl => {
          // -- 4
          window.location.href = redirectUrl;
        }).catch(error => {
          setBiAuthenticateResult(error.toString());
        });
      }
    }
    authenticate().catch(console.error);
  }, []);

  // -- 3
  async function biAuthenticate(url: string): Promise<string> {
    const BeyondIdentityEmbeddedSdk = await import("@beyondidentity/bi-sdk-js");
    let embedded = await BeyondIdentityEmbeddedSdk.Embedded.initialize();

    // Display passkeys so user can select one
    let passkeys = await embedded.getPasskeys();
    let promptText = passkeys.map((passkey, index) => {
      return `${index}: ${passkey.identity.username}`;
    }).join("\n");
    let selectedIndex = parseInt(prompt(promptText, "index")!!);
    if (selectedIndex >= 0 && selectedIndex < passkeys.length) {
      let selectedId = passkeys[selectedIndex].id;
      // Perform authentication using selected id
      let result = await embedded.authenticate(url, selectedId);
      return Promise.resolve(result.redirectUrl);
    } else {
      // This will fail in core as it won't match to any id
      return Promise.resolve("unknown_id");
    }
  }

  return (
    <div
      style={{
        display: 'flex',
        justifyContent: 'center',
        alignItems: 'center',
        height: '100vh',
      }}
    >
      <div className="container">
        <div className="row">
          <div className="d-flex justify-content-center">
            <div className="spinner-border" role="status">
              <span className="sr-only"></span>
            </div>
          </div>
        </div>
        <div className="row">
          {
            biAuthenticateResult.length > 0 &&
            <div className="row row-cols-1 row-cols-md-1 mt-3">
              <div className="col">
                <code>
                  {JSON.stringify(biAuthenticateResult, null, 2)}
                </code>
              </div>
            </div>
          }
        </div>
      </div>
    </div>
  );
};

export default BIAuthenticate;

What's happening here?​

  1. The useEffect is only called once on page load. In this function, we initialize the Beyond Identity SDK and use embedded.isAuthenticateUrl to check if the current page that was redirected to is in fact a valid bi-authenticate URL.
  2. If the URL is valid, we pull the URL using window.location.href and pass that directly into biAuthenticate in step 3.
  3. biAuthenticate calls embedded.authenticate with a valid bi-authenticate URL. This function performs a challenge/response against a passkey bound to your browser. Note that the callback in embedded.authenticate contains logic in order to prompt a user to select a passkey if there is more than one.
  4. Finally, the response of embedded.authenticate contains a redirectUrl. Follow this redirect URL to complete the OAuth/OIDC flow.

What does it look like?​

Upon running the next auth example app and clicking on the sign in button, you'll see the provider you just added as shown in the image below. Clicking on that provider will go through an OAuth/OIDC that will result in fetching an id token that will log you in to the example app.

image