Android in-app purchase server signature verification using php OpenSSL

Question

In an attempt to follow some of the security guidelines for in-app purchase here: http://developer.android.com/guide/market/billing/billing_best_practices.html

I am

Answer 1

I've written a library for verifying Android Market licensing responses and it's available on Google Code.

It just takes a few lines of PHP to verify a license, and the formatting of keys and OpenSSL stuff is taken care of for you.