National secret SM2 generated key pair encryption and decryption sample code

package main

import (
	"crypto/rand"
	"fmt"
	"log"

	"github.com/tjfoc/gmsm/x509"

	"github.com/tjfoc/gmsm/sm2"
)

func main() {
   
    
    
	// 生成密钥对
	priv, err := sm2.GenerateKey(rand