kubernetes/staging/src/k8s.io/kube-aggregator/pkg/apiserver/testdata/client-key.pem

-----BEGIN EC PRIVATE KEY-----
MHcCAQEEIJVbghSTWVClgCMEMWHf4Z5QRHplGl3OZzNvvYVc1hVLoAoGCCqGSM49
AwEHoUQDQgAEI7HyyXMDVAU8o3kQpInG+Ec1mCELWJrKz2owv0jONgc7dkDjKHuP
7UkDuKGrUpS2MW0UkqajJAODEUwSF1wH5A==
-----END EC PRIVATE KEY-----