X509Certificate.GetPublicKey Méthode

Définition

Espace de noms:

System.Security.Cryptography.X509Certificates

Assembly:

System.Security.Cryptography.dll

Source:

X509Certificate.cs

Retourne la clé publique pour le certificat X.509v3 sous forme de tableau d'octets.

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()

Retours

Byte[]

Clé publique pour le certificat X.509 sous forme de tableau d'octets.

Exceptions

CryptographicException

Le contexte de certificat n'est pas valide.

Exemples

L’exemple suivant utilise la méthode pour retourner la GetPublicKey clé publique d’un certificat sous la forme d’un tableau d’octets et l’affiche à la console.

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

Remarques

Cette valeur correspond au contenu du subjectPublicKey champ des données SubjectPublicKeyInfo dans le certificat.