DataProtector.ProviderUnprotect(Byte[]) Methode

Definition

Namespace:

System.Security.Cryptography

Assembly:

System.Security.dll

Gibt die Delegatmethode in der abgeleiteten Klasse an, in die die Unprotect(Byte[])-Methode in der Basisklasse wieder aufgerufen wird.

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()

Parameter

encryptedData

Byte[]

Die zu entschlüsselnden Daten.

Gibt zurück

Byte[]

Die entschlüsselten Daten.

Beispiele

Im folgenden Beispiel wird eine Implementierung der ProviderUnprotect-Methode veranschaulicht. Es ist Teil eines größeren Codebeispiels für die DataProtector -Klasse.

// 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