# openssl ec -in pri_key.pem -pubout -out pub_key.pem
-----BEGIN PUBLIC KEY-----
MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAElQ4lW7nrvCnPVsv0GKScu6qQxIw0
+NXOja+ks6UtQZB7+iolUsuhOMl6fZkCkaz7MUs+T9Y62P7L9OcJQdC3Kw==
-----END PUBLIC KEY-----