base.org = opt.org
		}
		if opt.ipAddresses != nil {
			base.ipAddresses = opt.ipAddresses
		}
		if opt.dnsNames != nil {
			base.dnsNames = opt.dnsNames
		}
		if opt.emailAddresses != nil {
			base.emailAddresses = opt.emailAddresses
		}
		if opt.uris != nil {
			base.uris = opt.uris
		}
	}
	return base
}

func csrWithOpts(base pemOptions, overlays ...pemOptions) []byte {

	}

	tmpl := &x509.Certificate{
		SerialNumber:       serialNumber,
		Subject:            cr.Subject,
		DNSNames:           cr.DNSNames,
		IPAddresses:        cr.IPAddresses,
		EmailAddresses:     cr.EmailAddresses,
		URIs:               cr.URIs,
		PublicKeyAlgorithm: cr.PublicKeyAlgorithm,
		PublicKey:          cr.PublicKey,
		Extensions:         cr.Extensions,
		ExtraExtensions:    cr.ExtraExtensions,
	}

	}

	tmpl := &x509.Certificate{
		SerialNumber:       serialNumber,
		Subject:            cr.Subject,
		DNSNames:           cr.DNSNames,
		IPAddresses:        cr.IPAddresses,
		EmailAddresses:     cr.EmailAddresses,
		URIs:               cr.URIs,
		PublicKeyAlgorithm: cr.PublicKeyAlgorithm,
		PublicKey:          cr.PublicKey,
		Extensions:         cr.Extensions,
		ExtraExtensions:    cr.ExtraExtensions,

		return organizationNotSystemNodesErr
	}

	// at least one of dnsNames or ipAddresses must be specified
	if len(req.DNSNames) == 0 && len(req.IPAddresses) == 0 {
		return dnsOrIPSANRequiredErr
	}

	if len(req.EmailAddresses) > 0 {
		return emailSANNotAllowedErr
	}
	if len(req.URIs) > 0 {
		return uriSANNotAllowedErr
	}

	if !kubeletServingRequiredUsages.Equal(usages) && !kubeletServingRequiredUsagesNoRSA.Equal(usages) {

	var ret []pkix.Extension

	if (len(template.DNSNames) > 0 || len(template.EmailAddresses) > 0 || len(template.IPAddresses) > 0 || len(template.URIs) > 0) &&
		!oidInExtensions(oidExtensionSubjectAltName, template.ExtraExtensions) {
		sanBytes, err := marshalSANs(template.DNSNames, template.EmailAddresses, template.IPAddresses, template.URIs)
		if err != nil {
			return nil, err
		}

		t.Fatalf("Unexpected DNSNames: got %v, want %v", out.DNSNames, in.DNSNames)
	}
	if !reflect.DeepEqual(in.EmailAddresses, out.EmailAddresses) {
		t.Fatalf("Unexpected EmailAddresses: got %v, want %v", out.EmailAddresses, in.EmailAddresses)
	}
	if len(in.IPAddresses) != len(out.IPAddresses) ||
		!in.IPAddresses[0].Equal(out.IPAddresses[0]) ||
		!in.IPAddresses[1].Equal(out.IPAddresses[1]) {

func parseSANExtension(der cryptobyte.String) (dnsNames, emailAddresses []string, ipAddresses []net.IP, uris []*url.URL, err error) {
	err = forEachSAN(der, func(tag int, data []byte) error {
		switch tag {
		case nameTypeEmail:
			email := string(data)
			if err := isIA5String(email); err != nil {
				return errors.New("x509: SAN rfc822Name is malformed")
			}
			emailAddresses = append(emailAddresses, email)
		case nameTypeDNS:

		panic(err)
	}
	csrb, err := x509.CreateCertificateRequest(insecureRand, &x509.CertificateRequest{
		Subject: pkix.Name{
			CommonName:   b.cn,
			Organization: b.orgs,
		},
		DNSNames:       b.dns,
		EmailAddresses: b.emails,
		IPAddresses:    b.ips,
	}, pk)
	if err != nil {
		panic(err)
	}
	return &capi.CertificateSigningRequest{
		Spec: capi.CertificateSigningRequestSpec{
			Username:   b.requestor,

				return nil, fmt.Errorf("cannot parse invalid IP: %s", err)
			}
			template.IPAddresses = append(template.IPAddresses, net.IP(ipBytes))

		case strings.HasPrefix(name, "email:"):
			template.EmailAddresses = append(template.EmailAddresses, name[6:])

		case strings.HasPrefix(name, "uri:"):
			uri, err := url.Parse(name[4:])
			if err != nil {
				return nil, fmt.Errorf("cannot parse URI %q: %s", name[4:], err)
			}

			check ^= xxh3.Hash(c.RawSubjectPublicKeyInfo)
			// We XOR, so order doesn't matter.
			for _, v := range c.DNSNames {
				check ^= xxh3.HashString(v)
			}
			for _, v := range c.EmailAddresses {
				check ^= xxh3.HashString(v)
			}
			for _, v := range c.IPAddresses {
				check ^= xxh3.HashString(v.String())
			}
			for _, v := range c.URIs {
				check ^= xxh3.HashString(v.String())