Mac App Store Receipt Validation Code?

Question

Wondering if anyone has a tutorial or working code for the new Mac App Store\'s receipt validation? About the only references I\'ve been able to find so far are Apple\'s st

Answer 1

Be sure to check that you are validating a receipt for your app. Easy to do all the crypto and verification of signatures for the wrong receipt.

See http://pastebin.com/1eWf9LCg where it looks like Angry Birds missed this bit and left them open to people substituting in a receipt from a free app.

Alan Quatermain also has code to do this up on github. https://github.com/AlanQuatermain/mac-app-store-validation-sample

It should not be used as-is to avoid automated removal.