Rust abstractions for multi-platform native authentication.

This crate supports:

• Apple: TouchID, FaceID, and regular username/password on both macOS and iOS.
• Android: See below for additional steps.
  • Requires the USE_BIOMETRIC permission in your app's manifest.
• Windows: Windows Hello (face recognition, fingerprint, PIN), plus winrt-based fallback for username/password.
• Linux: polkit-based authentication using the desktop environment's prompt.
  • Note: Linux support is currently incomplete.

For authentication to work, the following must be added to your app's AndroidManifest.xml:

<uses-permission android:name="android.permission.USE_BIOMETRIC" />

use robius_authentication::{
    AndroidText, BiometricStrength, Context, Policy, PolicyBuilder, Text, WindowsText,
};

let policy: Policy = PolicyBuilder::new()
    .biometrics(Some(BiometricStrength::Strong))
    .password(true)
    .watch(true)
    .build()
    .unwrap();

let text = Text {
    android: AndroidText {
        title: "Title",
        subtitle: None,
        description: None,
    },
    apple: "authenticate",
    windows: WindowsText::new("Title", "Description"),
};

let auth_result = Context::new(()).blocking_authenticate(text, &policy);
...

For more details about the prompt text, see the Text struct, which allows you to customize the prompt for each platform.