There is a forthcoming Encryption Xtra from SmartPants Media that I highly recommend.

Unfortunately, it sounds like you want to protect content from being stolen by the 
user from within an app that displays that content to the user.  I believe there is no 
way you will ever achieve this.  If the player app can display the content, then the 
user viewing the content
has access to the decryption scheme...that will always be a security hole.

Data can only be secured en route to its intended audience.  If you can give the 
audience a public key, then you can prevent others from intercepting it, but you won't 
be able to stop them from stealing that data.  You can make it difficult to access, 
but if the data were desirable
enough, it could be accessed without brute force.

Regards,

Daniel

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