package crypto/x509
MarshalPKIXPublicKey serialises a public key to DER-encoded PKIX format.
Golang crypto/x509.MarshalPKIXPublicKey function usage example
package main
import (
"crypto/rsa"
"crypto/sha256"
"crypto/rand"
"crypto/x509"
"os"
"fmt"
"encoding/hex"
)
func main() {
privatekey, err := rsa.GenerateKey(rand.Reader, 1024)
if err != nil {
fmt.Println(err)
os.Exit(1)
}
var publickey rsa.PublicKey
publickey = privatekey.PublicKey
der, err := x509.MarshalPKIXPublicKey(&publickey)
if err != nil {
fmt.Println(err)
os.Exit(1)
}
var fp [sha256.Size]byte
fp = sha256.Sum256(der)
fmt.Printf("%s\n", hex.EncodeToString(fp[:8]))
}
Reference :
http://golang.org/pkg/crypto/x509/#MarshalPKIXPublicKey
