X509Certificate.GetPublicKey Metode

Definisi

Ruang nama:

System.Security.Cryptography.X509Certificates

Rakitan:

System.Security.Cryptography.dll

Sumber:

X509Certificate.cs

Mengembalikan kunci umum untuk sertifikat X.509v3 sebagai array byte.

public:
 virtual cli::array <System::Byte> ^ GetPublicKey();

public virtual byte[] GetPublicKey ();

abstract member GetPublicKey : unit -> byte[]
override this.GetPublicKey : unit -> byte[]

Public Overridable Function GetPublicKey () As Byte()

Mengembalikan

Byte[]

Kunci umum untuk sertifikat X.509 sebagai array byte.

Pengecualian

CryptographicException

Konteks sertifikat tidak valid.

Contoh

Contoh berikut menggunakan GetPublicKey metode untuk mengembalikan kunci umum sertifikat sebagai array byte dan menampilkannya ke konsol.

using namespace System;
using namespace System::Security::Cryptography::X509Certificates;
int main()
{
   
   // The path to the certificate.
   String^ Certificate = "Certificate.cer";
   
   // Load the certificate into an X509Certificate object.
   X509Certificate^ cert = X509Certificate::CreateFromCertFile( Certificate );
   
   // Get the value.
   array<Byte>^results = cert->GetPublicKey();
   
   // Display the value to the console.
   System::Collections::IEnumerator^ enum0 = results->GetEnumerator();
   while ( enum0->MoveNext() )
   {
      Byte b = safe_cast<Byte>(enum0->Current);
      Console::Write( b );
   }
}

using System;
using System.Security.Cryptography.X509Certificates;

public class X509
{

    public static void Main()
    {

        // The path to the certificate.
        string Certificate =  "Certificate.cer";

        // Load the certificate into an X509Certificate object.
        X509Certificate cert = X509Certificate.CreateFromCertFile(Certificate);

        // Get the value.
        byte[] results = cert.GetPublicKey();

        // Display the value to the console.
        foreach(byte b in results)
        {
            Console.Write(b);
        }
    }
}

Imports System.Security.Cryptography.X509Certificates




Public Class X509
   
   
   Public Shared Sub Main()
      
      ' The path to the certificate.
      Dim Certificate As String = "Certificate.cer"
      
      ' Load the certificate into an X509Certificate object.
      Dim cert As X509Certificate = X509Certificate.CreateFromCertFile(Certificate)
      
      ' Get the value.
      Dim results As Byte() = cert.GetPublicKey()
      
      ' Display the value to the console.
      Dim b As Byte
      For Each b In  results
         Console.Write(b)
      Next b
   End Sub
End Class

Keterangan

Nilai ini sesuai dengan konten subjectPublicKey bidang data SubjectPublicKeyInfo dalam sertifikat.