[android-developers] encrypt files to be opened up by a specific app only

Hi developers, I want to make an app that would download pdf files and keep them in sdcard in encrypted form, such that the pdf can be opened by my app only and not even with any pdf reader installed on the device. Is it even possible? I would appreciate any help. Thanks Regards, Farhan --

Re: [android-developers] encrypt files to be opened up by a specific app only

Change the extension so the user doesn't get an error, then when they use your program have them type in a pass phrase to decrypt the key then decrypt the PDF in memory, then it can be seen. On May 11, 2012 8:08 AM, Farhan Tariq farhan@gmail.com wrote: Hi developers, I want to make an