X509Certificate2.PrivateKey Egenskap

public:
 property System::Security::Cryptography::AsymmetricAlgorithm ^ PrivateKey { System::Security::Cryptography::AsymmetricAlgorithm ^ get(); void set(System::Security::Cryptography::AsymmetricAlgorithm ^ value); };

[System.Obsolete("X509Certificate2.PrivateKey is obsolete. Use the appropriate method to get the private key, such as GetRSAPrivateKey, or use the CopyWithPrivateKey method to create a new instance with a private key.", DiagnosticId="SYSLIB0028", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]
public System.Security.Cryptography.AsymmetricAlgorithm? PrivateKey { get; set; }

public System.Security.Cryptography.AsymmetricAlgorithm? PrivateKey { get; set; }

public System.Security.Cryptography.AsymmetricAlgorithm PrivateKey { get; set; }

[<System.Obsolete("X509Certificate2.PrivateKey is obsolete. Use the appropriate method to get the private key, such as GetRSAPrivateKey, or use the CopyWithPrivateKey method to create a new instance with a private key.", DiagnosticId="SYSLIB0028", UrlFormat="https://aka.ms/dotnet-warnings/{0}")>]
member this.PrivateKey : System.Security.Cryptography.AsymmetricAlgorithm with get, set

member this.PrivateKey : System.Security.Cryptography.AsymmetricAlgorithm with get, set

Public Property PrivateKey As AsymmetricAlgorithm

Egenskapsvärde

Ett AsymmetricAlgorithm objekt, som antingen är en RSA- eller DSA-kryptografitjänstprovider.

Attribut

ObsoleteAttribute

Undantag

Exempel

Följande kodexempel öppnar det aktuella användarcertifikatarkivet, väljer endast aktiva certifikat och tillåter sedan att användaren väljer ett eller flera certifikat. Exemplet skriver sedan certifikatinformation till konsolen.

using System;
using System.Security.Cryptography;
using System.Security.Permissions;
using System.IO;
using System.Security.Cryptography.X509Certificates;

class CertSelect
{
    static void Main()
    {
        X509Store store = new X509Store("MY",StoreLocation.CurrentUser);
        store.Open(OpenFlags.ReadOnly | OpenFlags.OpenExistingOnly);

        X509Certificate2Collection collection = (X509Certificate2Collection)store.Certificates;
        X509Certificate2Collection fcollection = (X509Certificate2Collection)collection.Find(X509FindType.FindByTimeValid,DateTime.Now,false);
        X509Certificate2Collection scollection = X509Certificate2UI.SelectFromCollection(fcollection, "Test Certificate Select","Select a certificate from the following list to get information on that certificate",X509SelectionFlag.MultiSelection);
        Console.WriteLine("Number of certificates: {0}{1}",scollection.Count,Environment.NewLine);

        foreach (X509Certificate2 x509 in scollection)
        {
            try
            {
                byte[] rawdata = x509.RawData;
                Console.WriteLine("Content Type: {0}{1}",X509Certificate2.GetCertContentType(rawdata),Environment.NewLine);
                Console.WriteLine("Friendly Name: {0}{1}",x509.FriendlyName,Environment.NewLine);
                Console.WriteLine("Certificate Verified?: {0}{1}",x509.Verify(),Environment.NewLine);
                Console.WriteLine("Simple Name: {0}{1}",x509.GetNameInfo(X509NameType.SimpleName,true),Environment.NewLine);
                Console.WriteLine("Signature Algorithm: {0}{1}",x509.SignatureAlgorithm.FriendlyName,Environment.NewLine);
                Console.WriteLine("Public Key: {0}{1}",x509.PublicKey.Key.ToXmlString(false),Environment.NewLine);
                Console.WriteLine("Certificate Archived?: {0}{1}",x509.Archived,Environment.NewLine);
                Console.WriteLine("Length of Raw Data: {0}{1}",x509.RawData.Length,Environment.NewLine);
                X509Certificate2UI.DisplayCertificate(x509);
                x509.Reset();
            }
            catch (CryptographicException)
            {
                Console.WriteLine("Information could not be written out for this certificate.");
            }
        }
        store.Close();
    }
}

Imports System.Security.Cryptography
Imports System.Security.Permissions
Imports System.IO
Imports System.Security.Cryptography.X509Certificates

Class CertSelect

    Shared Sub Main()

        Dim store As New X509Store("MY", StoreLocation.CurrentUser)
        store.Open(OpenFlags.ReadOnly Or OpenFlags.OpenExistingOnly)

        Dim collection As X509Certificate2Collection = CType(store.Certificates, X509Certificate2Collection)
        Dim fcollection As X509Certificate2Collection = CType(collection.Find(X509FindType.FindByTimeValid, DateTime.Now, False), X509Certificate2Collection)
        Dim scollection As X509Certificate2Collection = X509Certificate2UI.SelectFromCollection(fcollection, "Test Certificate Select", "Select a certificate from the following list to get information on that certificate", X509SelectionFlag.MultiSelection)
        Console.WriteLine("Number of certificates: {0}{1}", scollection.Count, Environment.NewLine)
         
        For Each x509 As X509Certificate2 In scollection
            Try
                Dim rawdata As Byte() = x509.RawData
                Console.WriteLine("Content Type: {0}{1}", X509Certificate2.GetCertContentType(rawdata), Environment.NewLine)
                Console.WriteLine("Friendly Name: {0}{1}", x509.FriendlyName, Environment.NewLine)
                Console.WriteLine("Certificate Verified?: {0}{1}", x509.Verify(), Environment.NewLine)
                Console.WriteLine("Simple Name: {0}{1}", x509.GetNameInfo(X509NameType.SimpleName, True), Environment.NewLine)
                Console.WriteLine("Signature Algorithm: {0}{1}", x509.SignatureAlgorithm.FriendlyName, Environment.NewLine)
                Console.WriteLine("Public Key: {0}{1}", x509.PublicKey.Key.ToXmlString(False), Environment.NewLine)
                Console.WriteLine("Certificate Archived?: {0}{1}", x509.Archived, Environment.NewLine)
                Console.WriteLine("Length of Raw Data: {0}{1}", x509.RawData.Length, Environment.NewLine)
                X509Certificate2UI.DisplayCertificate(x509)
                x509.Reset()         
             Catch cExcept As CryptographicException
                 Console.WriteLine("Information could not be written out for this certificate.")
             End Try
        Next x509

        store.Close()
    End Sub
End Class

Kommentarer

För närvarande stöder den här egenskapen endast RSA- eller DSA-nycklar, så den returnerar antingen ett RSA eller ett DSA-objekt i .NET Core eller en RSACryptoServiceProvider eller ett DSACryptoServiceProvider-objekt i .NET Framework. Om ingen privat nyckel är associerad med certifikatet returneras null.

Om du vill ta bort den privata nyckeln som är associerad med den här egenskapen på rätt sätt anger du PersistKeyInCsp till falseoch anropar Clear sedan metoden.