DataProtector.ProviderUnprotect(Byte[]) Méthode

  • Référence

Définition

Espace de noms:
System.Security.Cryptography
Assembly:
System.Security.dll

Spécifie la méthode déléguée dans la classe dérivée que rappelle la méthode Unprotect(Byte[]) dans la classe de base.

protected:
 abstract cli::array <System::Byte> ^ ProviderUnprotect(cli::array <System::Byte> ^ encryptedData);
protected abstract byte[] ProviderUnprotect (byte[] encryptedData);
abstract member ProviderUnprotect : byte[] -> byte[]
Protected MustOverride Function ProviderUnprotect (encryptedData As Byte()) As Byte()

Paramètres

encryptedData
Byte[]

Données à déchiffrer.

Retours

Byte[]

Données non chiffrées.

Exemples

L'exemple suivant illustre une implémentation de la méthode ProviderUnprotect. Il fait partie d’un exemple de code plus grand pour la DataProtector classe .

// To allow a service to hand out instances of a DataProtector we demand unrestricted DataProtectionPermission
// in the constructor, but Assert the permission when ProviderUnprotect is called..  This is similar to FileStream
// where access is checked at time of creation, not time of use.
[SecuritySafeCritical]
[DataProtectionPermission(SecurityAction.Assert, UnprotectData = true)]
protected override byte[] ProviderUnprotect(byte[] encryptedData)
{

    ProtectedMemory.Unprotect(encryptedData,Scope);
        return encryptedData;
}

' To allow a service to hand out instances of a DataProtector we demand unrestricted DataProtectionPermission 
' in the constructor, but Assert the permission when ProviderUnprotect is called..  This is similar to FileStream
' where access is checked at time of creation, not time of use.
<SecuritySafeCritical(), DataProtectionPermission(SecurityAction.Assert, UnprotectData:=True)> _
Protected Overrides Function ProviderUnprotect(ByVal encryptedData() As Byte) As Byte()

    ProtectedMemory.Unprotect(encryptedData, Scope)
    Return encryptedData

End Function 'ProviderUnprotect

S’applique à