| crypto/x509 | Package x509 implements a subset of the X.509 standard. |
| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| io/ioutil | Package ioutil implements some I/O utility functions. |
| k8s.io/apiserver/pkg/authentication/authenticator | |
| k8s.io/apiserver/pkg/authentication/request/x509 | Package x509 provides a request authenticator that validates and extracts user information from client certificates |
| k8s.io/apiserver/pkg/authentication/user | Package user contains utilities for dealing with simple user exchange in the auth packages. |
| k8s.io/client-go/util/cert | |
| net/http | Package http provides HTTP client and server implementations. |
| net/url | Package url parses URLs and implements query escaping. |
| strings | Package strings implements simple functions to manipulate UTF-8 encoded strings. |