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X509Certificate.GetPublicKey メソッド

定義

X.509v3 証明書のバイト配列形式の公開キーを返します。

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()

戻り値

Byte[]

X.509 証明書のバイト配列形式の公開キー。

例外

証明書のコンテキストが無効です。

次の例では、 メソッドを GetPublicKey 使用して、証明書の公開キーをバイト配列として返し、コンソールに表示します。


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

注釈

この値は、証明書内の subjectPublicKey SubjectPublicKeyInfo データのフィールドの内容に対応します。

適用対象