RSACryptoServiceProvider.PersistKeyInCsp (Propiedad) (System.Security.Cryptography)

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PersistKeyInCsp (Propiedad)

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Esta página es específica de

Microsoft Visual Studio 2005/.NET Framework 2.0

Hay además otras versiones disponibles para:

Microsoft Visual Studio 2008/.NET Framework 3.5

Biblioteca de clases de .NET Framework

RSACryptoServiceProvider.PersistKeyInCsp (Propiedad)

Obtiene o establece un valor que indica si la clave debe conservarse en el proveedor de servicios criptográficos (CSP).

Espacio de nombres: System.Security.Cryptography
Ensamblado: mscorlib (en mscorlib.dll)

Sintaxis

Visual Basic (Declaración)

Public Property PersistKeyInCsp As Boolean

Visual Basic (Uso)

Dim instance As RSACryptoServiceProvider
Dim value As Boolean

value = instance.PersistKeyInCsp

instance.PersistKeyInCsp = value

public bool PersistKeyInCsp { get; set; }

C++

public:
property bool PersistKeyInCsp {
    bool get ();
    void set (bool value);
}

/** @property */
public boolean get_PersistKeyInCsp ()

/** @property */
public void set_PersistKeyInCsp (boolean value)

JScript

public function get PersistKeyInCsp () : boolean

public function set PersistKeyInCsp (value : boolean)

Valor de propiedad

Es true si la clave debe conservarse en el CSP; en caso contrario, es false.

Comentarios

Utilice esta propiedad para almacenar una clave en un contenedor de claves.

La propiedad PersistKeyInCsp se establece automáticamente en true cuando especifica un nombre de contenedor de claves en un objeto CspParameters y lo utiliza para inicializar un objeto RSACryptoServiceProvider. Puede especificar un nombre de contenedor mediante el campo KeyContainerName.

Si establece la propiedad PersistKeyInCsp en true sin inicializar el objeto RSACryptoServiceProvider con un objeto CspParameters, se crea un nombre de contenedor de claves aleatorio al que se antepone "CLR".

Ejemplo

En el ejemplo de código siguiente se crea un objeto RSACryptoServiceProvider y se almacena la clave en un contenedor de claves.

Visual Basic

Imports System.Security.Cryptography

Module RSACSPExample

Sub Main()

Dim KeyContainerName As String = "MyKeyContainer"

'Create a new key and persist it in
'the key container.
RSAPersistKeyInCSP(KeyContainerName)

'Delete the key from the key container.
RSADeleteKeyInCSP(KeyContainerName)
End Sub

Sub RSAPersistKeyInCSP(ByVal ContainerName As String)
Try
' Create a new instance of CspParameters. Pass
' 13 to specify a DSA container or 1 to specify
' an RSA container. The default is 1.
Dim cspParams As New CspParameters

' Specify the container name using the passed variable.
cspParams.KeyContainerName = ContainerName

'Create a new instance of RSACryptoServiceProvider to generate
'a new key pair. Pass the CspParameters class to persist the
'key in the container. The PersistKeyInCsp property is True by
'default, allowing the key to be persisted.
Dim RSAalg As New RSACryptoServiceProvider(cspParams)

'Indicate that the key was persisted.
Console.WriteLine("The RSA key was persisted in the container, ""{0}"".", ContainerName)
Catch e As CryptographicException
Console.WriteLine(e.Message)
End Try
End Sub

Sub RSADeleteKeyInCSP(ByVal ContainerName As String)
Try
' Create a new instance of CspParameters. Pass
' 13 to specify a DSA container or 1 to specify
' an RSA container. The default is 1.
Dim cspParams As New CspParameters

' Specify the container name using the passed variable.
cspParams.KeyContainerName = ContainerName

'Create a new instance of RSACryptoServiceProvider.
'Pass the CspParameters class to use the
'key in the container.
Dim RSAalg As New RSACryptoServiceProvider(cspParams)

'Explicitly set the PersistKeyInCsp property to False
'to delete the key entry in the container.
RSAalg.PersistKeyInCsp = False

'Call Clear to release resources and delete the key from the container.
RSAalg.Clear()

'Indicate that the key was persisted.
Console.WriteLine("The RSA key was deleted from the container, ""{0}"".", ContainerName)
Catch e As CryptographicException
Console.WriteLine(e.Message)
End Try
End Sub

End Module

using System;
using System.Security.Cryptography;


class RSACSPSample
{

    static void Main()
    {

        string KeyContainerName = "MyKeyContainer";

        //Create a new key and persist it in 
        //the key container.  
        RSAPersistKeyInCSP(KeyContainerName);

        //Delete the key from the key container.
        RSADeleteKeyInCSP(KeyContainerName);
    }

    public static void RSAPersistKeyInCSP(string ContainerName)
    {
        try
        {
            // Create a new instance of CspParameters.  Pass
            // 13 to specify a DSA container or 1 to specify
            // an RSA container.  The default is 1.
            CspParameters cspParams = new CspParameters();

            // Specify the container name using the passed variable.
            cspParams.KeyContainerName = ContainerName;

            //Create a new instance of RSACryptoServiceProvider to generate
            //a new key pair.  Pass the CspParameters class to persist the 
            //key in the container.  The PersistKeyInCsp property is true by 
            //default, allowing the key to be persisted. 
            RSACryptoServiceProvider RSAalg = new RSACryptoServiceProvider(cspParams);

            //Indicate that the key was persisted.
            Console.WriteLine("The RSA key was persisted in the container, \"{0}\".", ContainerName);
        }
        catch(CryptographicException e)
        {
            Console.WriteLine(e.Message);

        }
    }

    public static void RSADeleteKeyInCSP(string ContainerName)
    {
        try
        {
            // Create a new instance of CspParameters.  Pass
            // 13 to specify a DSA container or 1 to specify
            // an RSA container.  The default is 1.
            CspParameters cspParams = new CspParameters();

            // Specify the container name using the passed variable.
            cspParams.KeyContainerName = ContainerName;

            //Create a new instance of RSACryptoServiceProvider. 
            //Pass the CspParameters class to use the 
            //key in the container.
            RSACryptoServiceProvider RSAalg = new RSACryptoServiceProvider(cspParams);

            //Explicitly set the PersistKeyInCsp property to false
            //to delete the key entry in the container.
            RSAalg.PersistKeyInCsp = false;

            //Call Clear to release resources and delete the key from the container.
            RSAalg.Clear();

            //Indicate that the key was persisted.
            Console.WriteLine("The RSA key was deleted from the container, \"{0}\".", ContainerName);
        }
        catch(CryptographicException e)
        {
            Console.WriteLine(e.Message);

        }
    }
}

C++

using namespace System;
using namespace System::Security::Cryptography;
void RSAPersistKeyInCSP( String^ ContainerName )
{
   try
   {
      
      // Create a new instance of CspParameters.  Pass
      // 13 to specify a DSA container or 1 to specify
      // an RSA container.  The default is 1.
      CspParameters^ cspParams = gcnew CspParameters;
      
      // Specify the container name using the passed variable.
      cspParams->KeyContainerName = ContainerName;
      
      //Create a new instance of RSACryptoServiceProvider to generate
      //a new key pair.  Pass the CspParameters class to persist the 
      //key in the container.  The PersistKeyInCsp property is true by 
      //default, allowing the key to be persisted. 
      RSACryptoServiceProvider^ RSAalg = gcnew RSACryptoServiceProvider( cspParams );
      
      //Indicate that the key was persisted.
      Console::WriteLine( "The RSA key was persisted in the container, \"{0}\".", ContainerName );
   }
   catch ( CryptographicException^ e ) 
   {
      Console::WriteLine( e->Message );
   }

}

void RSADeleteKeyInCSP( String^ ContainerName )
{
   try
   {
      
      // Create a new instance of CspParameters.  Pass
      // 13 to specify a DSA container or 1 to specify
      // an RSA container.  The default is 1.
      CspParameters^ cspParams = gcnew CspParameters;
      
      // Specify the container name using the passed variable.
      cspParams->KeyContainerName = ContainerName;
      
      //Create a new instance of RSACryptoServiceProvider. 
      //Pass the CspParameters class to use the 
      //key in the container.
      RSACryptoServiceProvider^ RSAalg = gcnew RSACryptoServiceProvider( cspParams );
      
      //Explicitly set the PersistKeyInCsp property to false
      //to delete the key entry in the container.
      RSAalg->PersistKeyInCsp = false;
      
      //Call Clear to release resources and delete the key from the container.
      RSAalg->Clear();
      
      //Indicate that the key was persisted.
      Console::WriteLine( "The RSA key was deleted from the container, \"{0}\".", ContainerName );
   }
   catch ( CryptographicException^ e ) 
   {
      Console::WriteLine( e->Message );
   }

}

int main()
{
   String^ KeyContainerName = "MyKeyContainer";
   
   //Create a new key and persist it in 
   //the key container.  
   RSAPersistKeyInCSP( KeyContainerName );
   
   //Delete the key from the key container.
   RSADeleteKeyInCSP( KeyContainerName );
}

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

class RSACSPSample
{
    public static void main(String args[])
    {
        String keyContainerName = "MyKeyContainer";
        //Create a new key and persist it in 
        //the key container.  
        RSAPersistKeyInCSP(keyContainerName);
        //Delete the key from the key container.
        RSADeleteKeyInCSP(keyContainerName);
    } //main

    public static void RSAPersistKeyInCSP(String containerName)
    {
        try {
            // Create a new instance of CspParameters.  Pass
            // 13 to specify a DSA container or 1 to specify
            // an RSA container.  The default is 1.
            CspParameters cspParams = new CspParameters();
            // Specify the container name using the passed variable.
            cspParams.KeyContainerName = containerName;
            //Create a new instance of RSACryptoServiceProvider to generate
            //a new key pair.  Pass the CspParameters class to persist the 
            //key in the container.  The PersistKeyInCsp property is true by 
            //default, allowing the key to be persisted. 
            RSACryptoServiceProvider rsaAlg = new RSACryptoServiceProvider(
                cspParams);
            //Indicate that the key was persisted.
            Console.WriteLine("The RSA key was persisted in the container, " 
                + "\"{0}\".", containerName);
        }
        catch (CryptographicException e) {
            Console.WriteLine(e.get_Message());
        }
    } //RSAPersistKeyInCSP

    public static void RSADeleteKeyInCSP(String containerName)
    {
        try {
            // Create a new instance of CspParameters.  Pass
            // 13 to specify a DSA container or 1 to specify
            // an RSA container.  The default is 1.
            CspParameters cspParams = new CspParameters();
            // Specify the container name using the passed variable.
            cspParams.KeyContainerName = containerName;
            //Create a new instance of RSACryptoServiceProvider. 
            //Pass the CspParameters class to use the 
            //key in the container.
            RSACryptoServiceProvider rsaAlg = 
                new RSACryptoServiceProvider(cspParams);
            //Explicitly set the PersistKeyInCsp property to false
            //to delete the key entry in the container.
            rsaAlg.set_PersistKeyInCsp(false);
            //Call Clear to release resources and delete the key from the 
            // container.
            rsaAlg.Clear();
            //Indicate that the key was persisted.
            Console.WriteLine("The RSA key was deleted from the container, " 
                + "\"{0}\".", containerName);
        }
        catch (CryptographicException e) {
            Console.WriteLine(e.get_Message());
        }
    } //RSADeleteKeyInCSP
} //RSACSPSample

Seguridad de .NET Framework

KeyContainerPermission para obtener permiso para suprimir una clave. Enumeración asociada: Delete. Acción de seguridad: Demand O bien para obtener permiso para crear una clave. Enumeración asociada: Create. Acción de seguridad: Demand

Plataformas

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

.NET Framework no admite todas las versiones de cada plataforma. Para obtener una lista de las versiones admitidas, vea Requisitos del sistema.

Información de versión