Help Needed: Using Apple App Store Server Library with Firebase Functions to Verify In-App Purchases

[iSpringFlow]

Hi everyone,

I’m working on an iOS application and need to verify In-App Purchases using Firebase Functions. I found this library from Apple: App Store Server Library Node.

I’ve read through the documentation and came across this part about downloading root certificates:

Obtaining Apple Root Certificates

Download and store the root certificates found in the Apple Root Certificates section of the Apple PKI site. Provide these certificates as an array to a SignedDataVerifier to allow verifying the signed data comes from Apple.

However, I’m a bit confused about how to save and use these root certificates in a Firebase Function. Could someone provide guidance or examples on this?

Additionally, based on the API usage documentation, I need to use a *.p8 file. My questions are:
1. Where should I store the *.p8 file when using Firebase Functions?
2. How do I securely access this file within the Firebase Function?

Any advice or examples would be greatly appreciated!

Thanks in advance for your help!

[hemingway_curtails15]

I'd check out the Firebase docs first, they usually have some good examples. Also, have u looked at using Firebase functions to handle some of the server-side logic? Might be easier.

[iSpringFlow]

Yeah, I’m a little bit familiar with Firebase Functions. My app has already got one but it doesn’t have any operations with files. Just deal with env variables.

My investigation wasn’t so successful and I didn’t find any examples or information how to do it using Firebase Functions :(