keys/keybase.go
func (kb dbKeybase) CreateOffline(name string, pub crypto.PubKey) (Info, error) {
	return kb.writeOfflineKey(pub, name), nil
}
func (kb dbKeybase) CreateOffline(name string, pub crypto.PubKey) (Info, error) {
	return kb.writeOfflineKey(pub, name), nil
}
// CreateOffline creates a new reference to an offline keypair
// It returns the created key info