package main
import (
"encoding/base64"
"fmt"
"os"
"os/exec"
"strings"
"time"
l_file "github.com/lixu-any/go-tools/file"
)
//pkcs8格式,所以需要转为pkcs1格式,命令=>openssl rsa -in pks8.pem -out pks1.pem
//这里的私钥处理方式 1.以-----BEGIN RSA PRIVATE KEY----- +"换行" +原生字符串64位换行 +"换行" +-----END RSA PRIVATE KEY-----
//2.由于原生秘钥是pkcs8格式,所以需要转为pkcs1格式,命令=>openssl rsa -in pks8.pem -out pks1.pem
//3.openssl 下载地址 https://slproweb.com/products/Win32OpenSSL.html
func WriteToFile(fileName string, content string) error {
f, err := os.OpenFile(fileName, os.O_WRONLY|os.O_TRUNC|os.O_CREATE, 0644)
if err != nil {
fmt.Println("file create failed. err: " + err.Error())
} else {
// offset
//os.Truncate(filename, 0) //clear
n, _ := f.Seek(0, os.SEEK_END)
_, err = f.WriteAt([]byte(content), n)
fmt.Println("write succeed!")
defer f.Close()
}
return err
}
const (
KEY_BEGIN = "-----BEGIN RSA PRIVATE KEY-----"
KEY_END = "-----END RSA PRIVATE KEY-----"
)
func main() {
var (
pemstr string
nowtime = int32(time.Now().Unix())
bt = fmt.Sprintf("1_%d.pem", nowtime)
wt = fmt.Sprintf("2_%d.pem", nowtime)
pt = fmt.Sprintf("private_%d.txt", nowtime)
)
args := os.Args
if len(args) < 2 {
fmt.Println("params error")
return
}
pemstr = args[1]
fomartpem := ""
parr := strings.Split(pemstr, "")
for k, v := range parr {
if k != 0 && k%64 == 0 {
fomartpem += "\n"
}
fomartpem += v
}
fomartpem = KEY_BEGIN + "\n" + fomartpem
fomartpem = fomartpem + "\n" + KEY_END
os.Create(bt)
l_file.WriteTxt(bt, fomartpem)
// command := exec.Command("openssl", "rsa", "-in", "/Users/lixu/code/git/tools/"+bt, "-out", "/Users/lixu/code/git/tools/"+wt, ">mmn.txt")
cmd := fmt.Sprintf("openssl rsa -in %s -out %s", bt, wt)
c := exec.Command("bash", "-c", cmd)
// 此处是windows版本
// c := exec.Command("cmd", "/C", cmd)
output, _ := c.CombinedOutput()
fmt.Println(string(output))
sbt, _ := l_file.ReadFile(wt)
signstr := base64.StdEncoding.EncodeToString(sbt)
fmt.Println(signstr)
os.Create(pt)
l_file.WriteTxt(pt, signstr)
}
openssl rsa -in pks8.pem -out pks1.pem