EGI MasterPortal

SSH Public Key Upload Portal

Via this portal you can upload one or more OpenSSH public keys to the EGI MasterPortal. By using ssh-key authentication you can then retrieve proxy certificates.

You need to make sure there is a valid longer-lived proxy certificate in the EGI Master Portal, e.g. by going once every ±10 days to a VO-portal.
You can retrieve proxy certificates using ssh
For further options, try ssh help

You need to first via the online CA.