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I have written an app that uses a native shared library via the Android NDK. I am particularly interested to know whether the .so file is stored in a location that would be encrypted if I were to enable encryption on the phone.

When that app is installed on the phone, where does the .so file get stored Also, is there only one or multiple copies of that .so file on the phone?

Andrew T.
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bph
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    Is the device rooted? It would be fairly easy for you to answer your own question if the device is rooted? Watch the /data and notice changes during the app installation. Then filter the changes to find the thing you want. – Firelord Oct 02 '15 at 12:27
  • no the device is a non rooted samsung S3, I think its running 4.2 or thereabouts – bph Oct 02 '15 at 12:31
  • am i right in thinking that apps store there .apk file in the /data dir? the .so file must exist within the .apk - is it copied elsewhere also? i.e. is there an android equivalent of /usr/local/lib? would the /data dir be encrypted? – bph Oct 02 '15 at 12:33
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    Izzy has the things covered. See : Where Android apps store data? / Android Folder Hierarchy / Where in the file system are applications installed? – Firelord Oct 02 '15 at 12:37
  • yes - need to read and understand that, maybe I could run a find type command over adb as well to locate all instances of the .so on the phone? – bph Oct 02 '15 at 12:38
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    If the device is not rooted, find wouldn't be able to give you what you want. – Firelord Oct 02 '15 at 12:39
  • also need to find a doc on what storage locations are encrypted when you do the standard android encrypt phone procedure. I'm assuming its not the whole file system, maybe just the android equivalent of the /home dir, though that assumption could well be wrong – bph Oct 02 '15 at 12:39
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    I'm not certain but /data seems to be the only thing encrypted as per this link: https://source.android.com/devices/tech/security/encryption/ – Firelord Oct 02 '15 at 12:47
  • quite a technical article, but suggests that /data is encrypted with fill disk encryption. question remains how to be sure that the .so file has not proliferated to any other file locations - hopefully not.. – bph Oct 02 '15 at 12:59
  • @Firelord if you want to concatenate any/all of your comments into an answer I am happy to accept that - they have solved my problem.. – bph Oct 02 '15 at 14:02
  • Thank you, but I'm not confident that I've solved your problem. Perhaps, somebody with better expertise can provide a high-quality answer to your question. – Firelord Oct 02 '15 at 14:07

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