How to store private assets in an OSX application using cocoa

Question

IOS has a private package that stores assets (3D models, plates, etc.). There is no direct access to these assets for the user, therefore they are stored in a "safe" place. But Mac osx apps are stored in a folder where access is pretty simple.

Is there a way to keep assets in a secure bundle? Something like iOS apps?

Answer 1

Quick version: no matter what you do, a motivated user will receive the data he needs. Plus crypto is hard.

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: http://www.cs.ucdavis.edu/~rogaway/ocb/ocb-ref/rijndael-alg-fst.c ( .c .h, ). , , :

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#define KEYLENGTH(keybits) ((keybits)/8)
#define RKLENGTH(keybits)  ((keybits)/8+28)
#define NROUNDS(keybits)   ((keybits)/32+6)    
#define KEYBITS 256

(...)

uint32_t rijndaelKey[RKLENGTH(KEYBITS)];
unsigned char key[KEYLENGTH(KEYBITS)]; //You need to fill it with the encryption/decryption key
int nrounds = rijndaelSetupEncrypt(rijndaelKey, key, KEYBITS);

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unsigned char plaintext[16], ciphertext[16];
(...)
rijndaelEncrypt(rijndaelKey, nrounds, plaintext, ciphertext);

, Encrypt by Decrypt.

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Crypto , :/