Certificate Question

[guyfawkes 0]

Going into Settings/Security to generate a certificate, which file do I share with other users who want to exchange certificates? I find files called client.crt and client.key. Should there be a username.crt file generated as well? Or do I share the client.crt file, simply renaming it to username.crt?

[Crise 26]

.crt is the public certificate, and .key is the private key.