I am currently doing local validation of the IAP receipt in the app for managing subscriptions.
I want to move to validating the receipts from a server. In order to do this I need to generate a 'Shared Secret' for the app in iTunes Connect as I currently do not have one.
Will doing this have any impact on the current validation of receipts in the live app. From the point of view the receipt validation code in the app it does not know anything about Shared Secrets as you only need to use them when validating from a server, but does generating the Shared Secret change any hashes or anything that would mean that the existing live version of the app would not like new receipts?
As far as I can see the Shared Secret is just a token / password to identify your server to Apple when you ask to validate a receipt against https://buy.itunes.apple.com/verifyReceipt, so should all be safe, but I don't want to break my live app subscriptions by mistake.
TIA
Steven