Andrew Bancroft • 6/10/2016

Extracting a PKCS7 Container for Receipt Validation with Swift

This article is part of a series on receipt validation in Swift. It focuses on extracting the PKCS #7 container from a loaded receipt using the OpenSSL library. The author explains how to wrap OpenSSL's C API in Swift structs with clear function names for readability, and expands error handling with new ReceiptValidationError cases for empty receipt content. The guide assumes prior setup with iTunes Connect and OpenSSL, and provides code examples for the ReceiptExtractor struct.

0 comments

#Openssl #Io #Swift