package mainimport ("encoding/base64""fmt""os""os/exec""strings""time"l_file "github.com/lixu-any/go-tools/file" )//pkcs8格式，所以需要轉為pkcs1格式，命令=>openssl rsa -in pks8.pem -out pks1.pem //這里的私鑰處理方式 1.以-----BEGIN RSA PRIVATE KEY----- +"換行" +原生字符串64位換行 +"換行" +-----END RSA PRIVATE KEY----- //2.由于原生秘鑰是pkcs8格式，所以需要轉為pkcs1格式，命令=>openssl rsa -in pks8.pem -out pks1.pem //3.openssl 下載地址 https://slproweb.com/products/Win32OpenSSL.htmlfunc 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) //clearn, _ := 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 stringnowtime = 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.Argsif 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" + fomartpemfomartpem = fomartpem + "\n" + KEY_ENDos.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)// 此處是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

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