Golang crypto/x509.ParseCertificateRequest() function example

22nd June 2015

package crypto/x509

ParseCertificateRequest parses a single certificate request from the given ASN.1 DER data.

Golang crypto/x509.ParseCertificateRequest() function usage example

  package main

  import (
 "net"
 "crypto/x509"
 "crypto/x509/pkix"
 "fmt"
 "crypto/rsa"
 "crypto/rand"
  )

  func main() {

 // populate some dummy data.
 // see CertificateRequest full structure at
 // http://golang.org/pkg/crypto/x509/#CertificateRequest
 template := &x509.CertificateRequest {
 Signature : []byte("Hello World Signature"),
 SignatureAlgorithm : 2, // http://golang.org/pkg/crypto/x509/#SignatureAlgorithm
 Subject : pkix.Name{
 Country : []string{"Earth"},
 Organization: []string{"Mother Nature"},
 },
 DNSNames : []string{"example.abc123.com"},
 EmailAddresses : []string{"admin@abc123.com"},
 IPAddresses : []net.IP{net.IPv4(127, 0, 0, 1).To4(), net.ParseIP("2001:1234:0:2001::56")},
 }


 // generate private key
 privatekey, err := rsa.GenerateKey(rand.Reader, 2048)

 if err != nil {
 fmt.Println(err)
 }


 derBytes, err := x509.CreateCertificateRequest(rand.Reader, template, privatekey)

 if err != nil {
 fmt.Println(err)
 }

 parsedcertreq, err := x509.ParseCertificateRequest(derBytes)


 if err != nil {
 fmt.Println(err)
 }

 fmt.Println(parsedcertreq.Version)

 fmt.Println(parsedcertreq.Signature)
 fmt.Println(parsedcertreq.EmailAddresses)
 fmt.Println(parsedcertreq.DNSNames)
  }

Output :