PublicKeySSH will return string information that
represents stored public key in format suitable for SSH
servers. Typically, it will look like this:
---- BEGIN SSH2 PUBLIC KEY ----
AAAAB3NzaC1kc3MAAACBAKzHYPgw/VvUWHooW0iyKYPYVfaTZSDlHZaUEsHOAvdln+6aQw
..........
oRi1V/3n//AAypdXkAN8BSBrsb4V4AVdzHpvXSdHh9C+TlRUH1Ls72Kl929+4jMZmWDXGw
O5ns8NPAJZvOxnZKZA==
---- END SSH2 PUBLIC KEY ----
You can easily paste contents of this property to file
on your server system that keeps public keys.