Questions about Google Play application assets encryption
(Mumble, mumble, shrug, /me just sayin' ...)
Personally (a-n-d... from the point-of-view of someone who has somehow managed to make money from a commercial application for 23 years and counting ...), I would be FAR(!) more concerned about this:
Users who have previously installed problematic apps will need to uninstall and then re-download them ...
... than I would spend fixating on any "thoughts of piracy." (Nor, therefore, with any 'defenses' [sic] against them.)
A very good friend of mine once kept a very-expensive 12-string guitar ... in a cardboard(!) case ... fastened by the very-cheapest padlock that anyone could have procured. The padlock was, as he said: "to keep the honest people out."
"Well said, Robert ..."
A certain, minuscule, percentage of "people on this planet" might, indeed, "do whatever(!) it takes" to "crack the protection of" whatever-it-is that you wish to sell. [In my college days, I had a friend who positively collected Apple ][ floppy-discs, apparently for nothing more than the intellectual challenge of having "defeated" them.]
Such people are not your ยข-u-$-t-o-m-e-r-$!"
Therefore, I respectfully suggest:
"Yes, 'put a padlock on' your guitar-case."
... but DON'T go out of your way to "try to prevent someone from stealing your guitar."
... because the (thousands(!) of!!) folks who paid you M-O-N-E-Y ... don't(!!) wish to be inconvenienced!! (Nor to imagine that they might, even concievably(!!), be: "distrusted!")
Think about it . . .
"You walk through the front-door of the store at the mall, [having just made a $300 purchase ...] and, (lo and behold!!) the Sensormatic system "complains loudly!!" What does the clerk (and the store manager) do? They wave at you!! "Have a nice day!"
[Even if they have no idea if you spent $300, or that you might be a thief ... they ... wave at you. If you're a thief, that's a matter for the insurance company. Best-bet is that you're a customer, who must(!) receive an apologetic but very(!) friendly wave-goodbye.]
In the real-world of "actual commerce," it PAYS to keep such things in mind!!
Trust me: "the simplest, most-trivially-defeated" token-lock will do. The one-and-only requirement is that: "it exists. At all."