# openssl ecparam -name prime256v1 -genkey -noout -out pri_key.pem | |
-----BEGIN EC PRIVATE KEY----- | |
MHcCAQEEIF36VqEQX2EpA+vKd4WYI5qwI1iGD4RQ1v2NZ/iaSwvXoAoGCCqGSM49 | |
AwEHoUQDQgAElQ4lW7nrvCnPVsv0GKScu6qQxIw0+NXOja+ks6UtQZB7+iolUsuh | |
OMl6fZkCkaz7MUs+T9Y62P7L9OcJQdC3Kw== | |
-----END EC PRIVATE KEY----- |