Host key in Azure Function App for Authentication

Question

I have created two host keys(As shown in the below screen shot)

1. AccessKey
2. AccessKey02

How I can set, which one will be use for authentication?

Answer 1

All of the key will be used to authentication.

The host key acts on the entire function app. You can use any of them for verification, if you do not want to use it for verification, then revoke it. The host key you set becomes the key to access all triggers in the function app. (All of them will work). If you want to use different authentication for different triggers, then use the function key that acts on a single trigger.