EncryptedSharedPreferences

EncryptedSharedPreferences.java

final String userNameShPr="userNameShPr";
final String passwordShPr="passWordShPr";
final String checkBoxShPr="checkBoxShPr";
final String SHARED_PREFERENCES_FNAME = "secret_shared_prefs";

MasterKey masterKey = new
                    MasterKey.Builder(this,MasterKey.DEFAULT_MASTER_KEY_ALIAS).
                    setKeyScheme(MasterKey.KeyScheme.AES256_GCM).build();
SharedPreferences sharedPreferences = EncryptedSharedPreferences
                    .create(
                            this,
                            SHARED_PREFERENCES_FNAME,
                            masterKey,
                            EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
                            EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM
                    );

            if(sharedPreferences.getBoolean(checkBoxShPr,false)&&sharedPreferences.contains(userNameShPr)) {
                etLogin.setText(sharedPreferences.getString(userNameShPr, ""));
                checkBox.setChecked(true);
            }
            if(sharedPreferences.getBoolean(checkBoxShPr,false)&&sharedPreferences.contains(passwordShPr))
                etKey.setText(sharedPreferences.getString(passwordShPr,""));


        SharedPreferences.Editor sharedPreferencesEditor = sharedPreferences.edit();
        if(checkBox.isChecked()) {
            sharedPreferencesEditor.putString(userNameShPr,etLogin.getText().toString());
            sharedPreferencesEditor.putString(passwordShPr,etKey.getText().toString());
            sharedPreferencesEditor.putBoolean(checkBoxShPr,true);
        }else{
            sharedPreferencesEditor.putBoolean(checkBoxShPr,false);
            sharedPreferencesEditor.remove(userNameShPr);
            sharedPreferencesEditor.remove(passwordShPr);
        }
        sharedPreferencesEditor.apply();