如何在Golang中生成给定私钥和证书的PKCSs#12文件？

package main

import (
	"crypto/rand"
	"crypto/rsa"
	"crypto/x509"
	"encoding/pem"
	"fmt"
	"io/ioutil"
	"os"
)

func main() {
	// 读取私钥和证书文件
	privateKeyFile := "private.key"
	certificateFile := "certificate.crt"

	privateKeyData, err := ioutil.ReadFile(privateKeyFile)
	if err != nil {
		fmt.Println("Failed to read private key file:", err)
		return
	}

	certificateData, err := ioutil.ReadFile(certificateFile)
	if err != nil {
		fmt.Println("Failed to read certificate file:", err)
		return
	}

	// 解析私钥和证书
	privateKeyBlock, _ := pem.Decode(privateKeyData)
	if privateKeyBlock == nil || privateKeyBlock.Type != "RSA PRIVATE KEY" {
		fmt.Println("Failed to decode private key")
		return
	}

	privateKey, err := x509.ParsePKCS1PrivateKey(privateKeyBlock.Bytes)
	if err != nil {
		fmt.Println("Failed to parse private key:", err)
		return
	}

	certificate, err := x509.ParseCertificate(certificateData)
	if err != nil {
		fmt.Println("Failed to parse certificate:", err)
		return
	}

	// 生成PKCS#12文件
	pkcs12Data, err := x509.MarshalPKCS12PrivateKey(privateKey, certificate)
	if err != nil {
		fmt.Println("Failed to generate PKCS#12:", err)
		return
	}

	// 将PKCS#12数据写入文件
	pkcs12File := "output.p12"
	err = ioutil.WriteFile(pkcs12File, pkcs12Data, 0600)
	if err != nil {
		fmt.Println("Failed to write PKCS#12 file:", err)
		return
	}

	fmt.Println("PKCS#12 file generated successfully:", pkcs12File)
}