With the imminent suspension of SHA-1 on App Store receipts, we desperately need an objective C code sample demonstrating how to calculate the same SDH-256 hash on device to compared with the hash from the App Store receipt. The forced migration to SHA256 for app store receipts this month mean we have to rewrite our on device receipt validation code. However there is no documentation or objC sample code on how to validate the SHA256 hash from MAS receipts. Thje documentation at https://developer.apple.com/documentation/technotes/tn3138-handling-app-store-receipt-signing-certificate-changes/ does not give any detail on how to validate SHA256. All my 100+ hours of experimentation and trial and error attempting to create a matching SHA256 has on device have failed. We desperately need some ObjC Sample code to validate the SHA256 hash on device. Our existing SHA1 code is still working but we expect SHA1 hashes to disappear from MAS Receipts any day now. Tnanks for any advice !

note technically code-signing but related...... Why has there been no update to the documentation at: https://developer.apple.com/documentation/appstorereceipts/validating_receipts_on_the_device To demonstrate how to validate an SHA256 app store hash ??? The January deadline is looming and I can find no working example code which sucessfully validates an SHA256 hash HELP !!!!