I am using Titanium 1.7.6
I am developing an android 2.2 application that will access images/videos/pdf/text from my resources folder from sd card. I want only the application to be able to read the contents of my resources folder. What would be the best way to do that?
Here are some of my ideas:
-
password protect the resources folder, only application would know the password. (Not sure if this can be done. If you know how to do it please let me know.)
-
encrypt all the files inside the resources folder. (in this approach, I am guessing in order to read an encrypted file like images, I will have to decrypt the file and store it into some temp folder. after using the decrypted file delete the file from the temp folder.) But there is a problem with this approach. please see link to the problem here
If you have some other idea please add that to the list.
I don't really have a serious experience with android developing, but here are some ideas from top of my mind which may come handy:
- You can always use open-source compressing libraries such as gZip to compress and password protecting your folders using an additional library like PGP or PKZIP. this method is really common among developers. e.g: Call Of Duty games. the game, stores resources such as sprites/sounds/models/scripts and such in compressed and encrypted folders with .ff extension.
- since Android uses the same code base with Linux, I think it's possible to encrypt folders in the same fashion. so try all of those encrypting techniques from Linux
- And of course, when it comes to encrypting areas, one does not simply forgets about RSA and SSL like encryption/decryption algorithms
And your best option from the above methods is the first one, because:
- By compressing a whole folder, you don't need to worry about files inside it
- While using libraries such as gZip, with addition to a robust,fast and optimized backbone for your application you have a rich and easy-to-use API to decrypt and decompress your files and folders.
Hope it helps you.
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