Flutter

The Authsignal Flutter SDK can be used to:

• Sign up and sign in users using passkeys
• Enroll devices for push auth and allow users to approve or reject push auth challenges

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Prerequisites

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Passkeys

• iOS
• Android

GET https://<yourrelyingparty>/.well-known/apple-app-site-association

{
   "applinks": {},
   "webcredentials": {
      "apps": ["ABCDE12345.com.example.app"]
   },
   "appclips": {}
}

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Installation

Add authsignal_flutter: ^0.1.1 to your package’s pubspec.yaml file and run:

flutter pub get

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Initialization

Initialize the Authsignal client in your code:

import 'package:authsignal_flutter/authsignal_flutter.dart';

var authsignal = Authsignal({ tenantID: "YOUR_TENANT_ID", baseURL: "YOUR_REGION_BASE_URL" });

You can find your tenantId in the Authsignal Portal.

You must specify the correct baseUrl for your tenant’s region.

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Passkeys

For more information visit our passkeys documentation.

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Registering a new passkey

var result = await authsignal.passkey.signUp(token, userName);

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Authenticating with an existing passkey

var result = await authsignal.passkey.signIn();

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Push

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Adding a device credential

Adding a new credential must be authorized with a short-lived token. You can obtain this by calling the track endpoint on the Server API which will return a token in the response. This should be done at a point in your application when the user is strongly authenticated.

var result = await authsignal.push.addCredential(token);

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Removing a device credential

var result = await authsignal.push.removeCredential();

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Getting a challenge

var result = await authsignal.push.getChallenge();

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Updating a challenge

var approved = true; // true if the user has approved the challenge

var result = await authsignal.push.updateChallenge(challengeId, approved);