Generate a secure password for lnd wallet unlock

[hsjoberg]

No description provided.

[hsjoberg]

Cannot be stored in Keychain really as it's difficult to reach the keychain in native code before this gets merged: oblador/react-native-keychain#220

Also this is scary: oblador/react-native-keychain#152

[hsjoberg]

Can be moved to keychain later on.

[hsjoberg]

How to reach AsyncStorage items from Java:

import com.facebook.react.modules.storage.ReactDatabaseSupplier;
import android.database.sqlite.SQLiteDatabase;
import com.facebook.react.modules.storage.AsyncLocalStorageUtil;
[...]
SQLiteDatabase readableDatabase = ReactDatabaseSupplier.getInstance(getReactApplicationContext()).getReadableDatabase();
if (readableDatabase != null) {
  String impl = AsyncLocalStorageUtil.getItemImpl(readableDatabase, "bitcoinUnit");
  Log.d(TAG, "impl: " + impl);
}
else {
  Log.e(TAG, "ReadableDatabase NULL");
}

[hsjoberg]

Implemented in dc7f360