I'm wondering if the Chilkat libraries can be used to validate Apple's App Store receipts. The methods given by Apple all use OpenSSL like this on Apple's website and I'm wondering that there is something more programmer-friendly here.
Well, after a day spent downloading the source for openSSL, compiling it into a universal library, importing dozens of header files, and fixing issues with the header files, I've got it all working correctly. No need to answer this question now!
Chilkat is working on a general ASN.1 API that may help with this kind of task. Unfortunately, there is nothing that can immediately be provided to help.
I'm happy to hear you found a solution. Hopefully Chilkat will have an easier solution for this sort of task in the future.