func GenerateCSR(confFile, keyFile, csrFile string) error {
	return openssl("req", "-new",
		"-config", confFile,
		"-key", keyFile,
		"-out", csrFile)
}

// GenerateCert and writes output to certFile.
func GenerateCert(confFile, csrFile, keyFile, certFile string) error {
	return openssl("x509", "-req",
		"-days", "100000",
		"-signkey", keyFile,
		"-extensions", "req_ext",
		"-extfile", confFile,

		return Root{}, err
	}

	// Create the root CSR
	if err := cert.GenerateCSR(root.ConfFile, root.KeyFile, root.CSRFile); err != nil {
		return Root{}, err
	}

	// Create the root cert
	if err := cert.GenerateCert(root.ConfFile, root.CSRFile, root.KeyFile, root.CertFile); err != nil {
		return Root{}, err
	}
	return root, nil

cuiweixie <******@****.***> 1659534034 +0000

package testcert

import "strings"

// LocalhostCert is a PEM-encoded TLS cert with SAN IPs
// "127.0.0.1" and "[::1]", expiring at Jan 29 16:00:00 2084 GMT.
// generated from src/crypto/tls:
// go run generate_cert.go  --rsa-bits 2048 --host 127.0.0.1,::1,example.com --ca --start-date "Jan 1 00:00:00 1970" --duration=1000000h
var LocalhostCert = []byte(`-----BEGIN CERTIFICATE-----
MIIDOTCCAiGgAwIBAgIQSRJrEpBGFc7tNb1fb5pKFzANBgkqhkiG9w0BAQsFADAS

			if tc.ExpectError != "" {
				t.Errorf("%s: expected error %q, got none", k, tc.ExpectError)
			}
		}()
	}

}

// localhostCert was generated from crypto/tls/generate_cert.go with the following command:
//
//	go run generate_cert.go  --rsa-bits 2048 --host 127.0.0.1,::1,example.com --ca --start-date "Jan 1 00:00:00 1970" --duration=1000000h
var localhostCert = []byte(`-----BEGIN CERTIFICATE-----

	tmpdir, err := ctx.CreateTmpDirectory("ca-custom-root")
	if err != nil {
		return err
	}

	// Create testing certs using runtime namespace.
	err = generateCerts(tmpdir, customNs.Get().Name())
	if err != nil {
		return err
	}
	rootCert, err := cert.LoadCert(path.Join(tmpdir, "root-cert.pem"))
	if err != nil {
		return err
	}

// limitations under the License.

// Provides utility methods to generate X.509 certificates with different
// options. This implementation is Largely inspired from
// https://golang.org/src/crypto/tls/generate_cert.go.

package util

import (
	"crypto"
	"crypto/ecdsa"
	"crypto/elliptic"
	"crypto/rand"
	"crypto/rsa"
	"crypto/x509"
	"crypto/x509/pkix"
	"errors"
	"fmt"
	"os"
	"strings"