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lego/crypto.go

39 lines
739 B
Go

package main
import (
"crypto/rand"
"crypto/rsa"
"crypto/x509"
"encoding/pem"
"io/ioutil"
"os"
)
func generateRsaKey(length int, file string) (*rsa.PrivateKey, error) {
privateKey, err := rsa.GenerateKey(rand.Reader, length)
if err != nil {
return nil, err
}
pemKey := pem.Block{Type: "RSA PRIVATE KEY", Bytes: x509.MarshalPKCS1PrivateKey(privateKey)}
certOut, err := os.Create(file)
if err != nil {
return nil, err
}
pem.Encode(certOut, &pemKey)
certOut.Close()
return privateKey, nil
}
func loadRsaKey(file string) (*rsa.PrivateKey, error) {
keyBytes, err := ioutil.ReadFile(file)
if err != nil {
return nil, err
}
keyBlock, _ := pem.Decode(keyBytes)
return x509.ParsePKCS1PrivateKey(keyBlock.Bytes)
}