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X509Certificate.GetPublicKey Method

Returns the public key for the X.509v3 certificate.

Namespace: System.Security.Cryptography.X509Certificates
Assembly: mscorlib (in mscorlib.dll)

Public Overridable Function GetPublicKey As Byte()
Dim instance As X509Certificate
Dim returnValue As Byte()

returnValue = instance.GetPublicKey
public byte[] GetPublicKey ()
public function GetPublicKey () : byte[]

Return Value

The public key for the X.509 certificate as an array of bytes.

Imports System
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
      Next b
   End Sub
End Class 

import System.*;
import System.Security.Cryptography.X509Certificates.*;

public class X509
    public static void main(String[] args)
        // The path to the certificate.
        String certificate = "Certificate.cer";

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

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

        // Display the value to the console.
        for (int iCtr = 0; iCtr < results.get_Length(); iCtr++) {
            ubyte b = results[iCtr];
    } //main 
} //X509

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0