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Cryptography is the practice and study of logical means used to achieve information confidentiality, integrity and authenticity. It covers, among other things, encryption (making some data unreadable except for those who know a given secret element, called a key), data hashing (in particular for password storage) and digital signatures (provable integrity and authenticity with non-repudiation).

8 votes

Is RSA useless when my app is fully decompiled?

Short answer is: Yes, RSA is useless in this case. If all the game logic happens on client side, you cannot prevent cheating. If your game is reporting only the final score and nothing else, no encry …
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