X509Certificate.GetPublicKey Method ()

 

Returns the public key for the X.509v3 certificate as an array of bytes.

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

Public Overridable Function GetPublicKey As Byte()

Return Value

Type: System.Byte()

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

Exception Condition
CryptographicException

The certificate context is invalid.

The following example uses the GetPublicKey method to return a certificate's public key as an array of bytes and displays it to the console.

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
         Console.Write(b)
      Next b
   End Sub
End Class 

.NET Framework
Available since 1.1
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
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