func (h *HeartbeatUpdate) Sign(key *ecdsa.PrivateKey) {
h.Signature = libytc.SignMap(nil, h.String(), key)
}
func (k *SpaceUpdate) Sign(key *ecdsa.PrivateKey) {
k.Signature = libytc.SignMap(k.Signature, k.String(), key)
return
}
func (t *TransferUpdate) Sign(key *ecdsa.PrivateKey) {
t.Signature = libytc.SignMap(nil, t.String(), key)
return
}
func (l *LocationUpdate) Sign(key *ecdsa.PrivateKey) {
l.Signature = libytc.SignMap(nil, l.String(), key)
return
}