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CryptographicKey Clase

  • Referencia

Definición

Espacio de nombres:
Windows.Security.Cryptography.Core
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Representa una clave simétrica o un par de claves asimétricas.

public ref class CryptographicKey sealed
/// [Windows.Foundation.Metadata.ContractVersion(Windows.Foundation.UniversalApiContract, 65536)]
/// [Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
class CryptographicKey final
[Windows.Foundation.Metadata.ContractVersion(typeof(Windows.Foundation.UniversalApiContract), 65536)]
[Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
public sealed class CryptographicKey
Public NotInheritable Class CryptographicKey
Herencia
Object Platform::Object IInspectable CryptographicKey
Atributos
ContractVersionAttribute MarshalingBehaviorAttribute

Requisitos de Windows

Familia de dispositivos
Windows 10 (se introdujo en la versión 10.0.10240.0)
API contract
Windows.Foundation.UniversalApiContract (se introdujo en la versión v1.0)

Ejemplos

using Windows.Security.Cryptography;
using Windows.Security.Cryptography.Core;
using Windows.Storage.Streams;

namespace SampleCryptographicKey
{
    sealed partial class CryptographicKeyApp : Application
    {
        static IBuffer buffKeyPair;

        public CryptographicKeyApp()
        {
            // Initialize the application.
            this.InitializeComponent();

            // Create an asymmetric key pair.
            String strAsymmetricAlgName = AsymmetricAlgorithmNames.RsaPkcs1;
            UInt32 asymmetricKeyLength = 512;
            IBuffer buffPublicKey = this.SampleCreateAsymmetricKeyPair(
                strAsymmetricAlgName,
                asymmetricKeyLength);
        }

        public IBuffer SampleCreateAsymmetricKeyPair(
            String strAsymmetricAlgName,
            UInt32 keyLength)
        {
            // Open the algorithm provider for the specified asymmetric algorithm.
            AsymmetricKeyAlgorithmProvider objAlgProv = AsymmetricKeyAlgorithmProvider.OpenAlgorithm(strAsymmetricAlgName);

            // Create an asymmetric key pair.
            CryptographicKey keyPair = objAlgProv.CreateKeyPair(keyLength);

            // Export the public key to a buffer for use by others.
            IBuffer buffPublicKey = keyPair.ExportPublicKey();

            // You should keep your private key (embedded in the key pair) secure. For  
            // the purposes of this example, however, we're just copying it into a
            // static class variable for later use during decryption.
            CryptographicKeyApp.buffKeyPair = keyPair.Export();

            // Retrieve the size of the key pair.
            UInt32 lengthKeyPair = keyPair.KeySize;

            // Return the public key.
            return buffPublicKey;
        }
    }
}

Comentarios

Se crea un objeto CryptographicKey cuando se usan métodos que crean o importan claves en las siguientes clases:

Propiedades

KeySize

Obtiene el tamaño, en bits, de la clave.

Métodos

Export()

Exporta el par de claves a un búfer.
Export(CryptographicPrivateKeyBlobType)

Exporta el par de claves a un búfer dado un formato especificado.
ExportPublicKey()

Exporta una clave pública a un búfer.
ExportPublicKey(CryptographicPublicKeyBlobType)

Exporta una clave pública a un búfer dado un formato especificado.

Se aplica a

Consulte también