加密确实是可能的路要走。 AIR确实有一个方便的加密本地存储，应简化这种方法适合你：

Encryption is indeed probably the way to go. AIR does have a handy encrypted local store which should simplify this approach for you:

http://livedocs.adobe.com/flex/ 3 / langref /闪光灯/数据/ EncryptedLocalStore.html