Certificates in other Mac

My old Mac stopped working. I have a backup made ​​Apple certificates. How do I install on my new computer? Or should I re-download them from the Apple Developer site?

I would just make new ones.  You have to get the keys and certificates and they all have to match up.

Rob

Rob: I must make them from scratch, all the bureaucratic process, or I can re-download them from the Apple developer page where they are staying?

You can download the certificates, but you won’t have the key’s which were generated locally.

ah … I have a backup of the other disk … can I get the keys?

I think so.  You may have to be able to run Keychain access to get them and export them.  I don’t know that they exist as copyable files by default.

I would just make new ones.  You have to get the keys and certificates and they all have to match up.

Rob

Rob: I must make them from scratch, all the bureaucratic process, or I can re-download them from the Apple developer page where they are staying?

You can download the certificates, but you won’t have the key’s which were generated locally.

ah … I have a backup of the other disk … can I get the keys?

I think so.  You may have to be able to run Keychain access to get them and export them.  I don’t know that they exist as copyable files by default.