Hello,

The android app downloaded/purchased from Google Play is stored in 
"/data/app" directory.
Does Play Store or android system modify the apk after download?
I have calculated message digest of apk before it's upload to Play store.
I am calculating message digest of the downloaded apk (present at 
/data/app) and verifying it with the digest stored in my app.
When I purchase it from Play store, after my app launch, digest 
verification is getting failed.
I found that the message digest which I have stored in app and the digest 
which I am calculating at run time are differing.
Am I going in right direction?

Thanks.

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