File list (Check if you may need any files):
C20-StoreKit\01-Products Request\cover320x416.png
............\...................\Default.png
............\...................\HelloWorld.xcodeproj\project.pbxproj
............\...................\HelloWorld_Prefix.pch
............\...................\icon.png
............\...................\Info.plist
............\...................\main.m
............\...................\TestBedViewController.xib
............\...................\UIDevice-Reachability.h
............\...................\UIDevice-Reachability.m
............\.2-Purchase\cover320x416.png
............\...........\Default.png
............\...........\HelloWorld.xcodeproj\project.pbxproj
............\...........\HelloWorld_Prefix.pch
............\...........\icon.png
............\...........\Info.plist
............\...........\main.m
............\...........\ModalAlert.h
............\...........\ModalAlert.m
............\...........\TestBedViewController.xib
............\...........\UIDevice-Reachability.h
............\...........\UIDevice-Reachability.m
............\.3-Validating Receipt\cover320x416.png
............\.....................\Default.png
............\.....................\HelloWorld.xcodeproj\project.pbxproj
............\.....................\HelloWorld_Prefix.pch
............\.....................\icon.png
............\.....................\Info.plist
............\.....................\main.m
............\.....................\ModalAlert.h
............\.....................\ModalAlert.m
............\.....................\NSData-Base64.h
............\.....................\NSData-Base64.m
............\.....................\TestBedViewController.xib
............\.....................\UIDevice-Reachability.h
............\.....................\UIDevice-Reachability.m
............\..b- Looking at sig data\cover320x416.png
............\........................\Default.png
............\........................\HelloWorld.xcodeproj\project.pbxproj
............\........................\HelloWorld_Prefix.pch
............\........................\icon.png
............\........................\Info.plist
............\........................\main.m
............\........................\ModalAlert.h
............\........................\ModalAlert.m
............\........................\NSData-Base64.h
............\........................\NSData-Base64.m
............\........................\TestBedViewController.xib
............\........................\UIDevice-Reachability.h
............\........................\UIDevice-Reachability.m
............\.1-Products Request\HelloWorld.xcodeproj
............\.2-Purchase\HelloWorld.xcodeproj
............\.3-Validating Receipt\HelloWorld.xcodeproj
............\..b- Looking at sig data\HelloWorld.xcodeproj
............\01-Products Request
............\02-Purchase
............\03-Validating Receipt
............\03b- Looking at sig data
C20-StoreKit