X509BasicConstraintsExtension Constructores

Referencia

Definición

Espacio de nombres:: System.Security.Cryptography.X509Certificates

Ensamblado:: System.Security.Cryptography.X509Certificates.dll

Ensamblado:: System.Security.Cryptography.dll

Ensamblado:: System.dll

Ensamblado:: netstandard.dll

Importante

Parte de la información hace referencia a la versión preliminar del producto, que puede haberse modificado sustancialmente antes de lanzar la versión definitiva. Microsoft no otorga ninguna garantía, explícita o implícita, con respecto a la información proporcionada aquí.

Inicializa una nueva instancia de la clase X509BasicConstraintsExtension.

Sobrecargas

X509BasicConstraintsExtension()	Inicializa una nueva instancia de la clase X509BasicConstraintsExtension.
X509BasicConstraintsExtension(AsnEncodedData, Boolean)	Inicializa una nueva instancia de la clase X509BasicConstraintsExtension utilizando un objeto AsnEncodedData y un valor que identifica si la extensión es crítica.
X509BasicConstraintsExtension(Boolean, Boolean, Int32, Boolean)	Inicializa una nueva instancia de la clase X509BasicConstraintsExtension. Los parámetros especifican un valor que indica si el certificado es de una entidad de certificación (CA), otro valor que indica si existe alguna restricción en el número de niveles de ruta de acceso que permite, el número de niveles permitido en su ruta de acceso y un último valor que indica si la extensión es crítica.

X509BasicConstraintsExtension()

Inicializa una nueva instancia de la clase X509BasicConstraintsExtension.

public:
 X509BasicConstraintsExtension();

public X509BasicConstraintsExtension ();

Public Sub New ()

Ejemplos

En el ejemplo de código siguiente se muestra cómo abrir el almacén de certificados personal de un usuario y mostrar información sobre cada certificado del almacén. En este ejemplo se usa la X509BasicConstraintsExtension clase para mostrar la información.

#using <System.dll>
#using <system.security.dll>

using namespace System;
using namespace System::Security::Cryptography;
using namespace System::Security::Cryptography::X509Certificates;
int main()
{
   try
   {
      X509Store^ store = gcnew X509Store( L"MY",StoreLocation::CurrentUser );
      store->Open( static_cast<OpenFlags>(OpenFlags::ReadOnly | OpenFlags::OpenExistingOnly) );
      X509Certificate2Collection^ collection = dynamic_cast<X509Certificate2Collection^>(store->Certificates);
      for ( int i = 0; i < collection->Count; i++ )
      {
         System::Collections::IEnumerator^ myEnum = collection[ i ]->Extensions->GetEnumerator();
         while ( myEnum->MoveNext() )
         {
            X509Extension^ extension = safe_cast<X509Extension^>(myEnum->Current);
            Console::WriteLine( L"{0}({1})", extension->Oid->FriendlyName, extension->Oid->Value );
            if ( extension->Oid->FriendlyName == L"Key Usage" )
            {
               X509KeyUsageExtension^ ext = dynamic_cast<X509KeyUsageExtension^>(extension);
               Console::WriteLine( ext->KeyUsages );
            }
            if ( extension->Oid->FriendlyName == L"Basic Constraints" )
            {
               X509BasicConstraintsExtension^ ext = dynamic_cast<X509BasicConstraintsExtension^>(extension);
               Console::WriteLine( ext->CertificateAuthority );
               Console::WriteLine( ext->HasPathLengthConstraint );
               Console::WriteLine( ext->PathLengthConstraint );
            }
            if ( extension->Oid->FriendlyName == L"Subject Key Identifier" )
            {
               X509SubjectKeyIdentifierExtension^ ext = dynamic_cast<X509SubjectKeyIdentifierExtension^>(extension);
               Console::WriteLine( ext->SubjectKeyIdentifier );
            }
            if ( extension->Oid->FriendlyName == L"Enhanced Key Usage" )
            {
               X509EnhancedKeyUsageExtension^ ext = dynamic_cast<X509EnhancedKeyUsageExtension^>(extension);
               OidCollection^ oids = ext->EnhancedKeyUsages;
               System::Collections::IEnumerator^ myEnum1 = oids->GetEnumerator();
               while ( myEnum1->MoveNext() )
               {
                  Oid^ oid = safe_cast<Oid^>(myEnum1->Current);
                  Console::WriteLine( L"{0}({1})", oid->FriendlyName, oid->Value );
               }
            }
         }

      }
      store->Close();
   }
   catch ( CryptographicException^ ) 
   {
      Console::WriteLine( L"Information could not be written out for this certificate." );
   }

}

using System;
using System.Security.Cryptography;
using System.Security.Cryptography.X509Certificates;

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

            X509Certificate2Collection collection = (X509Certificate2Collection)store.Certificates;
            for (int i = 0; i < collection.Count; i++)
            {
                foreach (X509Extension extension in collection[i].Extensions)
                {
                    Console.WriteLine(extension.Oid.FriendlyName + "(" + extension.Oid.Value + ")");

                    if (extension.Oid.FriendlyName == "Key Usage")
                    {
                        X509KeyUsageExtension ext = (X509KeyUsageExtension)extension;
                        Console.WriteLine(ext.KeyUsages);
                    }

                    if (extension.Oid.FriendlyName == "Basic Constraints")
                    {
                        X509BasicConstraintsExtension ext = (X509BasicConstraintsExtension)extension;
                        Console.WriteLine(ext.CertificateAuthority);
                        Console.WriteLine(ext.HasPathLengthConstraint);
                        Console.WriteLine(ext.PathLengthConstraint);
                    }

                    if (extension.Oid.FriendlyName == "Subject Key Identifier")
                    {
                        X509SubjectKeyIdentifierExtension ext = (X509SubjectKeyIdentifierExtension)extension;
                        Console.WriteLine(ext.SubjectKeyIdentifier);
                    }

                    if (extension.Oid.FriendlyName == "Enhanced Key Usage")
                    {
                        X509EnhancedKeyUsageExtension ext = (X509EnhancedKeyUsageExtension)extension;
                        OidCollection oids = ext.EnhancedKeyUsages;
                        foreach (Oid oid in oids)
                        {
                            Console.WriteLine(oid.FriendlyName + "(" + oid.Value + ")");
                        }
                    }
                }
            }
            store.Close();
        }
        catch (CryptographicException)
        {
            Console.WriteLine("Information could not be written out for this certificate.");
        }
    }
}

Imports System.Security.Cryptography
Imports System.Security.Cryptography.X509Certificates



Module CertSelect

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

            Dim collection As X509Certificate2Collection = CType(store.Certificates, X509Certificate2Collection)
            For i As Integer = 0 To collection.Count - 1
                Dim extension As X509Extension
                For Each extension In collection(i).Extensions
                    Console.WriteLine(extension.Oid.FriendlyName + "(" + extension.Oid.Value + ")")


                    If extension.Oid.FriendlyName = "Key Usage" Then
                        Dim ext As X509KeyUsageExtension = CType(extension, X509KeyUsageExtension)
                        Console.WriteLine(ext.KeyUsages)
                    End If

                    If extension.Oid.FriendlyName = "Basic Constraints" Then
                        Dim ext As X509BasicConstraintsExtension = CType(extension, X509BasicConstraintsExtension)
                        Console.WriteLine(ext.CertificateAuthority)
                        Console.WriteLine(ext.HasPathLengthConstraint)
                        Console.WriteLine(ext.PathLengthConstraint)
                    End If

                    If extension.Oid.FriendlyName = "Subject Key Identifier" Then
                        Dim ext As X509SubjectKeyIdentifierExtension = CType(extension, X509SubjectKeyIdentifierExtension)
                        Console.WriteLine(ext.SubjectKeyIdentifier)
                    End If

                    If extension.Oid.FriendlyName = "Enhanced Key Usage" Then
                        Dim ext As X509EnhancedKeyUsageExtension = CType(extension, X509EnhancedKeyUsageExtension)
                        Dim oids As OidCollection = ext.EnhancedKeyUsages
                        Dim oid As Oid
                        For Each oid In oids
                            Console.WriteLine(oid.FriendlyName + "(" + oid.Value + ")")
                        Next oid
                    End If
                Next extension
            Next i
            store.Close()
        Catch
            Console.WriteLine("Information could not be written out for this certificate.")
        End Try

    End Sub
End Module

Se aplica a

X509BasicConstraintsExtension(AsnEncodedData, Boolean)

Inicializa una nueva instancia de la clase X509BasicConstraintsExtension utilizando un objeto AsnEncodedData y un valor que identifica si la extensión es crítica.

public:
 X509BasicConstraintsExtension(System::Security::Cryptography::AsnEncodedData ^ encodedBasicConstraints, bool critical);

public X509BasicConstraintsExtension (System.Security.Cryptography.AsnEncodedData encodedBasicConstraints, bool critical);

new System.Security.Cryptography.X509Certificates.X509BasicConstraintsExtension : System.Security.Cryptography.AsnEncodedData * bool -> System.Security.Cryptography.X509Certificates.X509BasicConstraintsExtension

Public Sub New (encodedBasicConstraints As AsnEncodedData, critical As Boolean)

Parámetros

encodedBasicConstraints: AsnEncodedData

Datos codificados que se van a utilizar para crear la extensión.

critical: Boolean

true si la extensión es crítica; de lo contrario, false.

Comentarios

Use este constructor si la información para crear una extensión ya está en un AsnEncodedData objeto .

Se aplica a

X509BasicConstraintsExtension(Boolean, Boolean, Int32, Boolean)

Inicializa una nueva instancia de la clase X509BasicConstraintsExtension. Los parámetros especifican un valor que indica si el certificado es de una entidad de certificación (CA), otro valor que indica si existe alguna restricción en el número de niveles de ruta de acceso que permite, el número de niveles permitido en su ruta de acceso y un último valor que indica si la extensión es crítica.

public:
 X509BasicConstraintsExtension(bool certificateAuthority, bool hasPathLengthConstraint, int pathLengthConstraint, bool critical);

public X509BasicConstraintsExtension (bool certificateAuthority, bool hasPathLengthConstraint, int pathLengthConstraint, bool critical);

new System.Security.Cryptography.X509Certificates.X509BasicConstraintsExtension : bool * bool * int * bool -> System.Security.Cryptography.X509Certificates.X509BasicConstraintsExtension

Public Sub New (certificateAuthority As Boolean, hasPathLengthConstraint As Boolean, pathLengthConstraint As Integer, critical As Boolean)

Parámetros

certificateAuthority: Boolean

true si el certificado es de una entidad de certificación (CA); de lo contrario, false.

hasPathLengthConstraint: Boolean

true si el certificado tiene restringido el número de niveles de ruta de acceso que permite; de lo contrario, false.

pathLengthConstraint: Int32

Número de niveles permitido en la ruta de acceso de un certificado.

critical: Boolean

true si la extensión es crítica; de lo contrario, false.

Se aplica a

Compartir a través de

X509BasicConstraintsExtension Constructores

Definición

Sobrecargas

X509BasicConstraintsExtension()

Ejemplos

Se aplica a

X509BasicConstraintsExtension(AsnEncodedData, Boolean)

Parámetros

Comentarios

Se aplica a

X509BasicConstraintsExtension(Boolean, Boolean, Int32, Boolean)

Parámetros

Se aplica a

Recursos adicionales