Imports github.com/cert-manager/cert-manager/pkg/apis/certmanager/v1 github.com/cert-manager/cert-manager/pkg/util github.com/cert-manager/cert-manager/pkg/util/pki k8s.io/apimachinery/pkg/util/errors Standard library imports bytes crypto/x509 crypto/x509/pkix encoding/asn1 fmt strings time