Re: [NSCoderNightDC] In-App Purchase Receipt Validation

I decided that I didn't want to bother trying to prevent piracy and did the most simple check possible, on-device, then set a boolean in NSUserDefaults on purchase / purchase restore. You don't need any external libraries for this basic case, StoreKit gives you enough. This case should be pretty easy, you can just copy/paste code. The hardest part of this is remember to check all the right boxes on iTunesConnect so the IAP actually goes live.

It only gets complex when you try to incorporate 3rd-party authentication, where there's communication between iTunes / the App / Your servers. In that case, all the custom JSON parsing / encryption / etc. comes into play. I don't think you need it if you're validating purchases on the phone only.

On Mon, Feb 24, 2014 at 11:49 AM, Kevin Barrett <kevboh@gmail.com> wrote:

Also interested in this.

On February 24, 2014 at 11:48:30 AM, Jon August (jonaugust@gmail.com) wrote:

Hey,

I'm wondering if any of you have experience implementing in-app purchase for a non-consumable. I have several questions about the mechanics - like:

- How did you handle the differences in the receipt process so you can support iOS 6 and 7?

- Did you use a third party library to handle the decryption, signature verification, and JSON parsing?

- Local or Server validation? Your server or direct to Apple?

- How often do you check the receipt? Every time you launch? Once?

- How did you store the "success" result in a way that prevents tampering?

Thanks for your insight.

-Jon

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