How to securely store keys to Mifare cards in the application?

Question

Android

We have an Android mobile application that reads Mifare S50 secure cards, the key is embedded in the application itself. But if you get access to the application, it will not be difficult to decompile it and pull out the keys. Question: how can you store keys and passwords so that at least there is no access to them during decompilation?

Answer 1

No way. Such keys are not stored in the application. They must be on a secure server, otherwise you can always get to them.