Question

我正在使用SQLCipher v3.5.7并在SQLiteDatabase中发现了一个意外的行为，密码错误。

我用＆＃34; key1＆＃34;加密了数据库。
关闭数据库连接。
然后我尝试使用＆＃34; key2＆＃34;打开我的数据库，SQLiteDatabase没有抛出异常。相反，它将旧密码（key1）更新为新密码（key2）。我通过在SQLiteBrowser中打开.db文件来验证这一点。

有人能帮我解释为什么会这样吗？

private static SQLiteCipherDatabaseHelper createDBConnection(Context context, String databasePath, final String key) throws SQLiteDatabaseException {
    if (dbInstance == null) {
        dbInstance = new SQLiteCipherDatabaseHelper(context, databasePath);

        String path = context.getDatabasePath(databasePath).getPath();
        File dbPathFile = new File(path);
        if (!dbPathFile.exists()) {
               dbPathFile.getParentFile().mkdirs();
        }

        setDatabaseWithDBEncryption(key);
    }
    return dbInstance;
}

private static void setDatabaseWithDBEncryption(String encryptionKey) throws SQLiteDatabaseException {
    loadSQLCipherLibs();
    try {
        sqliteDatabase = SQLiteDatabase.openOrCreateDatabase(new File(context.getDatabasePath(databasePath).getPath()), encryptionKey, null);
    } catch (Exception e) {
        SyncLogger.getSharedInstance().logFatal("SQLiteCipherDatabaseHelper", "Failed to open or create database. Please provide a valid encryption key");
        throw new SQLiteDatabaseException(SyncErrorCodes.EC_DB_SQLCIPHER_FAILED_TO_OPEN_OR_CREATE_DATABASE, SyncErrorDomains.ED_OFFLINE_OBJECTS, SyncErrorMessages.EM_DB_SQLCIPHER_FAILED_TO_OPEN_OR_CREATE_DATABASE, e);
    }
}

Answer 1

您是否升级了db版本？

 private static final int DATABASE_VERSION = 2;//from 1 to 2
 private static class OpenHelper extends SQLiteOpenHelper {
    OpenHelper(Context context) // constructor
    {
        super(context, DATABASE_NAME, null, DATABASE_VERSION);
    }

    @Override
    public void onCreate(SQLiteDatabase db) {
    }
    @Override
    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) 
 {
     //Changes in db mentioned here
 }
}

SQLCipher Android没有使用不正确的密码

1 个答案: