Move the secure-random code into this project due to build issues with the module, which is no longer maintained

android/app/src/main/java/xyz/blueskyweb/pubsq/AppSecureRandomModule.java

@@ -0,0 +1,28 @@
+package xyz.blueskyweb.pubsq;
+
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.bridge.ReactMethod;
+import com.facebook.react.bridge.Promise;
+
+import java.security.SecureRandom;
+import android.util.Base64;
+
+public class AppSecureRandomModule extends ReactContextBaseJavaModule {
+  public AppSecureRandomModule(ReactApplicationContext context) {
+    super(context);
+  }
+
+  @ReactMethod
+  public void generateSecureRandomAsBase64(int length, Promise promise) {
+    SecureRandom secureRandom = new SecureRandom();
+    byte[] buffer = new byte[length];
+    secureRandom.nextBytes(buffer);
+    promise.resolve(Base64.encodeToString(buffer, Base64.NO_WRAP));
+  }
+
+  @Override
+  public String getName() {
+    return "AppSecureRandomModule";
+  }
+}

android/app/src/main/java/xyz/blueskyweb/pubsq/AppSecureRandomPackage.java

@@ -0,0 +1,26 @@
+package xyz.blueskyweb.pubsq;
+
+import com.facebook.react.ReactPackage;
+import com.facebook.react.bridge.NativeModule;
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.uimanager.ViewManager;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+public class AppSecureRandomPackage implements ReactPackage {
+
+  @Override
+  public List<ViewManager> createViewManagers(ReactApplicationContext reactContext) {
+      return Collections.emptyList();
+  }
+
+  @Override
+  public List<NativeModule> createNativeModules(ReactApplicationContext reactContext) {
+    List<NativeModule> modules = new ArrayList<>();
+    modules.add(new AppSecureRandomModule(reactContext));
+    return modules;
+  }
+
+}

android/app/src/main/java/xyz/blueskyweb/pubsq/MainApplication.java

@@ -28,6 +28,7 @@ public class MainApplication extends Application implements ReactApplication {
           List<ReactPackage> packages = new PackageList(this).getPackages();
           // Packages that cannot be autolinked yet can be added manually here, for example:
           // packages.add(new MyReactNativePackage());
+          packages.add(new AppSecureRandomPackage());
           return packages;
         }