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Overview


React Native applications can integrate with Civic Auth using any OAuth2/OIDC-compatible library. Popular options include:

For a complete OAuth2/OIDC integration details, see the Civic Auth Integration Guide.

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Reference Implementation

A complete working example is available in the civic-auth-examples repository, which demonstrates:

  • OAuth2 authorization code flow with PKCE
  • Login flow
  • Logout flow

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Implementation Approach

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1. Configure OAuth2 Endpoints

Civic Auth uses standard OAuth2/OIDC endpoints:

  • Authorization: https://auth.civic.com/oauth/auth
  • Token: https://auth.civic.com/oauth/token
  • UserInfo: https://auth.civic.com/oauth/userinfo
  • Scopes: openid profile email

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2. Authentication Flow

The reference implementation follows a standard OAuth2 authorization code flow with PKCE:

  1. User initiates sign-in
  2. App opens Civic Auth on a WebView
  3. User authenticates
  4. App receives authorization code through redirect
  5. App exchanges code for tokens
  6. App fetches user information

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3. Example AuthContext

The reference project’s AuthContext demonstrates how to use Expo AuthSession:

// Uses expo-auth-session for OAuth2 flow
const [request, response, promptAsync] = useAuthRequest(
  {
    clientId: config.clientId,
    scopes: ["openid", "profile", "email"],
    redirectUri: config.redirectUri,
    usePKCE: true, // Required by Civic Auth
  },
  {
    authorizationEndpoint: config.authorizationEndpoint,
    tokenEndpoint: config.tokenEndpoint,
  },
);

// Authentication methods
const authContext = {
  signIn: () => promptAsync(),
  signOut: async () => {
    // Clear tokens and end remote session
  },
  state: { isAuthenticated, user, accessToken },
};

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Resources