golang 生成RSA公鑰和私鑰檔案
阿新 • • 發佈：2019-02-13
package main
import (
"crypto/rand"
"crypto/rsa"
"crypto/x509"
"encoding/pem"
"os"
import (
"crypto/rand"
"crypto/rsa"
"crypto/x509"
"encoding/pem"
"os"
)
func main() {
//rsa 金鑰檔案產生
GenRsaKey(1024)
}
//RSA公鑰私鑰產生
func GenRsaKey(bits int) error {
// 生成私鑰檔案
privateKey, err := rsa.GenerateKey(rand.Reader, bits)
if err != nil {
return err
}
derStream := x509.MarshalPKCS1PrivateKey(privateKey)
block := &pem.Block{
Type: "RSA PRIVATE KEY",
Bytes: derStream,
}
file, err := os.Create("private.pem")
if err != nil {
return err
}
err = pem.Encode(file, block)
if err != nil {
return err
}
// 生成公鑰檔案
publicKey := &privateKey.PublicKey
derPkix, err := x509.MarshalPKIXPublicKey(publicKey)
if err != nil {
return err
}
block = &pem.Block{
Type: "PUBLIC KEY",
Bytes: derPkix,
}
file, err = os.Create("public.pem")
if err != nil {
return err
}
err = pem.Encode(file, block)
if err != nil {
return err
}
return nil
}