Question

我在我的应用程序中使用realm数据库，目前在Application类我正在使用默认配置初始化领域，并且我正在使用Realm.getDefaultConfiguration()来查询/保存数据。

现在我想加密数据库，我按照以下方式做了

RealmConfiguration config = new RealmConfiguration.Builder()
            .encryptionKey(getKeyFunction())
            .migration(new MyMigration())
            .build();
Realm.setDefaultConfiguration(config);`

但是当我尝试访问Realm.getDefaultConfiguration()时，我收到Invalid format of Realm File错误。

我做错了什么？

Answer 1

这是我的工作代码。我在我的示例项目中测试了这个

    // Generate a key
    // IMPORTANT! This is a silly way to generate a key. It is also never stored.
    // For proper key handling please consult:
    // * https://developer.android.com/training/articles/keystore.html
    // * http://nelenkov.blogspot.dk/2012/05/storing-application-secrets-in-androids.html
    Realm.init(this);
    byte[] key = new byte[64];
    new SecureRandom().nextBytes(key);
    RealmConfiguration realmConfiguration = new RealmConfiguration.Builder()
            .encryptionKey(key)
            .build();

    // Start with a clean slate every time
    Realm.deleteRealm(realmConfiguration);

    Realm.setDefaultConfiguration(realmConfiguration);
    // Open the Realm with encryption enabled
    realm = Realm.getDefaultInstance();
    //realm = Realm.getInstance(realmConfiguration);
    // Everything continues to work as normal except for that the file is encrypted on disk
    realm.executeTransaction(new Realm.Transaction() {
        @Override
        public void execute(Realm realm) {
            Person person = realm.createObject(Person.class);
            person.setName("Happy Person");
            person.setAge(14);
        }
    });

    Person person = realm.where(Person.class).findFirst();
    Log.i(TAG, String.format("Person name: %s", person.getName()));

如何使用加密密钥

1 个答案: