Generate private key firebase admin sdk

Question

i'm very new with firebase. I need private key to accessing firebase admin sdk for my backend. Actually, my company had used firebase for long time but no one know where is the private key or had been generate it.

So, here my questions :
1. what will happen with the old private key when i click generate ? can we still use it ? or the key will be obsolete and caused some services didn't work ?
2. can the private key used by any platform in parallel ?

thank you

np : sorry for my bad english

Answer 1

1. Your old private key is stored, so you can still use it if you decide to generate a new private key.
2. Yes, you can use both keys at the same time for different purposes.

You can manage your keys here.

Select your project and look under Key Id to find all the keys you have generated. You can also delete old or unused keys.