Imports github.com/golang/glog k8s.io/kubernetes/pkg/auth/user github.com/openshift/origin/pkg/auth/authenticator/request/x509request github.com/openshift/origin/pkg/cmd/util k8s.io/kubernetes/pkg/util/sets Standard library imports bytes crypto/rand crypto/tls crypto/x509 errors fmt io/ioutil math/big math/rand net os path/filepath sort strconv sync time crypto/x509/pkix crypto/rsa encoding/pem crypto crypto/ecdsa